Agricultural Water Management最新文献

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Optimizing sowing date to mitigate loss of growing degree days and enhance crop water productivity of groundwater-irrigated spring maize 优化播种日期,减少生长度日损失,提高地下水灌溉春玉米的作物水分生产率
IF 5.9 1区 农林科学
Agricultural Water Management Pub Date : 2024-10-29 DOI: 10.1016/j.agwat.2024.109097
Lifeng Zhou , Xinlong Han , Qiliang Yang , Hao Feng , Kadambot H.M. Siddique
{"title":"Optimizing sowing date to mitigate loss of growing degree days and enhance crop water productivity of groundwater-irrigated spring maize","authors":"Lifeng Zhou ,&nbsp;Xinlong Han ,&nbsp;Qiliang Yang ,&nbsp;Hao Feng ,&nbsp;Kadambot H.M. Siddique","doi":"10.1016/j.agwat.2024.109097","DOIUrl":"10.1016/j.agwat.2024.109097","url":null,"abstract":"<div><div>Groundwater irrigation (GWI) decreases soil temperature and increases crop growth duration and water consumption. Optimizing sowing dates offers a cost-effective solution to mitigate these effects. This study evaluated five sowing date treatments for spring maize: GWI on April 20 (GW420), April 25 (GW425), April 30 (GW430), May 5 (GW505), and May 10 (GW510), with surface water irrigation (SWI) on April 20 (SW420) as the control. The evaluated parameters included soil temperature at 5 cm depth (T<sub>5</sub>), soil-temperature-calculated growing degree days (GDD<sub>s</sub>), actual crop evapotranspiration (ET<sub>c-act</sub>), leaf area index (LAI), grain filling, grain yield, and crop water productivity (WP<sub>c</sub>). GW420 decreased daily maximum T<sub>5</sub> by 1.8°C (P&lt;0.05) and daily average GDD<sub>s</sub> accumulation by 5.9 % and increased the growth duration by 7.8 d and ET<sub>c-act</sub> by 33.2 mm compared to SW420. GW420 also delayed LAI growth and decreased the weight of maximum grain filling rate (W<sub>max</sub>) and maximum grain filling rate (G<sub>max</sub>), reducing mean LAI (LAI<sub>ave</sub>) by 8.7 %, grain yield by 6.7 %, and WP<sub>c</sub> by 10.2 % (P&lt;0.05). Late sowing compensated for GDD<sub>s</sub> loss in the GWI treatments, with the highest daily average GDD<sub>s</sub> accumulation observed in GW505 and GW510 (21.3°C d<sup>–1</sup>), followed by SW420 and GW430 (20.2–20.3°C d<sup>–1</sup>), and the lowest in GW420 and GW425 (19.1–19.4°C d<sup>–1</sup>). Late sowing also shortened growth duration and decreased ET<sub>c-act</sub>, with GW510 showing a 13.9 d shorter growth duration and GW425, GW430, GW505, and GW510 exhibiting 30.6, 36.0, 57.6, and 70.2 mm lower ET<sub>c-act</sub>, respectively, than GW420. Moderately late sowing (GW430) enhanced G<sub>max</sub> and maintained the active grain filling period (T<sub>agp</sub>). Late sowing increased WP<sub>c</sub> by 7.9 %, 16.8 %, 17.4 %, and 17.2 % in GW425, GW430, GW505, and GW510 (P&lt;0.05), respectively, compared to GW420. While the grain yields of GW430 and SW420 did not significantly differ, GW430 had a higher WP<sub>c</sub> than SW420, indicating that moderately late sowing fully compensated for the decline in grain yield and WP<sub>c</sub> of groundwater-irrigated maize. Entropy-TOPSIS analysis revealed that GW430 is the optimal sowing date for groundwater-irrigated maize in arid regions of northwest China, offering a cost-effective method to mitigate GWI-induced GDD<sub>s</sub> loss and enhance WP<sub>c</sub>.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"305 ","pages":"Article 109097"},"PeriodicalIF":5.9,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Maximizing crop yield and water productivity through biochar application: A global synthesis of field experiments 通过施用生物炭实现作物产量和水分生产率最大化:全球田间试验综述
IF 5.9 1区 农林科学
Agricultural Water Management Pub Date : 2024-10-29 DOI: 10.1016/j.agwat.2024.109134
Liangang Xiao , Yi Lin , Deliang Chen , Kebing Zhao , Yudi Wang , Zengtao You , Rongqin Zhao , Zhixiang Xie , Junguo Liu
{"title":"Maximizing crop yield and water productivity through biochar application: A global synthesis of field experiments","authors":"Liangang Xiao ,&nbsp;Yi Lin ,&nbsp;Deliang Chen ,&nbsp;Kebing Zhao ,&nbsp;Yudi Wang ,&nbsp;Zengtao You ,&nbsp;Rongqin Zhao ,&nbsp;Zhixiang Xie ,&nbsp;Junguo Liu","doi":"10.1016/j.agwat.2024.109134","DOIUrl":"10.1016/j.agwat.2024.109134","url":null,"abstract":"<div><div>Thus far, a series of field experiments have been conducted across the globe to investigate the effects of biochar on crop productivity. However, a comprehensive evaluation of the improvement potential of crop yield, water use, and relevant underlying drivers after adding biochar remains lacking. A synthesis based on global field experiments was conducted herein to investigate the efficacy of biochar in crop-yield and water-use improvement, taking a range of potential impacting factors into account. The results showed that biochar significantly increased crop yield and crop water productivity (WP<sub>c</sub>), by 11.2 % and 14.8 %, respectively, but caused a significant decline (1.8 %) in crop evapotranspiration (ET<sub>c</sub>). The highest crop-yield improvement was reached at an application rate of &gt; 20 t ha<sup>−1</sup> in the initial year after adding biochar. Low C/N, high pyrolysis temperature, low pH, and wood-based raw materials were found to be beneficial biochar properties for increasing crop production. Biochar generally performed better in soils of low pH and low fertility, especially in hot and humid climates. There was a higher increase in crop yield for corn compared with those for wheat and rice. In addition, changes in WP<sub>c</sub> were generally commensurate with those of crop yield in most scenarios. Conditions beneficial for crop-yield improvement tend to result in a higher increase in WP<sub>c</sub> through their effects on ET<sub>c</sub>. Overall, this study illustrates that crop yield improvement is closely related to improvements in both soil fertility and water use. The latter represents an important factor related to crop growth and productivity through the regulation of evaporation and transpiration after biochar amendment. Despite the promising performance of biochar in promoting crop yield and WP<sub>c</sub>, a further challenge involves ways to maximize the effects of biochar across global croplands by properly considering the impacting factors during the process of policy design and implementation.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"305 ","pages":"Article 109134"},"PeriodicalIF":5.9,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538245","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Integrating multi-source remote sensing and machine learning for root-zone soil moisture and yield prediction of winter oilseed rape (Brassica napus L.): A new perspective from the temperature-vegetation index feature space 整合多源遥感和机器学习,用于冬油菜根区土壤水分和产量预测:温度-植被指数特征空间的新视角
IF 5.9 1区 农林科学
Agricultural Water Management Pub Date : 2024-10-29 DOI: 10.1016/j.agwat.2024.109129
Hongzhao Shi , Zhijun Li , Youzhen Xiang , Zijun Tang , Tao Sun , Ruiqi Du , Wangyang Li , Xiaochi Liu , Xiangyang Huang , Yulin Liu , Naining Zhong , Fucang Zhang
{"title":"Integrating multi-source remote sensing and machine learning for root-zone soil moisture and yield prediction of winter oilseed rape (Brassica napus L.): A new perspective from the temperature-vegetation index feature space","authors":"Hongzhao Shi ,&nbsp;Zhijun Li ,&nbsp;Youzhen Xiang ,&nbsp;Zijun Tang ,&nbsp;Tao Sun ,&nbsp;Ruiqi Du ,&nbsp;Wangyang Li ,&nbsp;Xiaochi Liu ,&nbsp;Xiangyang Huang ,&nbsp;Yulin Liu ,&nbsp;Naining Zhong ,&nbsp;Fucang Zhang","doi":"10.1016/j.agwat.2024.109129","DOIUrl":"10.1016/j.agwat.2024.109129","url":null,"abstract":"&lt;div&gt;&lt;div&gt;Accurately assessing root-zone soil moisture is crucial for precision irrigation, as it directly influences crop yield. The Temperature-Vegetation Index (Ts-VI) Feature Space, which combines land surface temperature (Ts) and vegetation index (VI), is widely used to evaluate root-zone soil moisture in vegetated areas. However, its effectiveness in estimating crop yield remains unclear. Therefore, the objectives of this study are: (1) to collect multispectral and thermal infrared remote sensing data from a two-year (2021–2023) field experiment on winter oilseed rape &lt;em&gt;(Brassica napus&lt;/em&gt; L.), and to optimize and evaluate the fitting methods of the dry and wet edges of the Ts-VI feature space based on the selected vegetation indices; (2) to analyze the spatiotemporal patterns of the Temperature Vegetation Dryness Index (TVDI) derived from the optimized Ts-VI feature space and estimate root-zone soil moisture (SM) and crop yield; and (3) to precisely invert the SM and yield of winter oilseed rape in the 0–60 cm root-zone using three machine learning algorithms—Support Vector Regression (SVR), Extreme Gradient Boosting Regression (XGBR), and Random Forest Regression (RFR)—based on the optimized TVDI. Results indicate that, among the various fitting methods, the polynomial fitting method shows the best performance. The performance of the root-zone soil moisture prediction models across different growth stages follows the order of budding stage &gt; seedling stage &gt; flowering stage, and with the increase of soil depth, the performance of the model gradually deteriorates.In the yield inversion of winter oilseed rape, TVDI effectively predicts yield, with the coefficient of determination (R&lt;sup&gt;2&lt;/sup&gt;) ranging from 0.430 to 0.480 and RMSE ranging from 213.399 to 267.212 kg ha&lt;sup&gt;−1&lt;/sup&gt; during the seedling stage, R&lt;sup&gt;2&lt;/sup&gt; ranging from 0.640 to 0.747 and RMSE ranging from 110.712 to 178.133 kg ha&lt;sup&gt;−1&lt;/sup&gt; during the budding stage, and R&lt;sup&gt;2&lt;/sup&gt; ranging from 0.680 to 0.773 and RMSE ranging from 83.815 to 147.301 kg ha&lt;sup&gt;−1&lt;/sup&gt; during the flowering stage. The flowering stage effectively reflects crop yield trends and allows for accurate yield prediction of winter oilseed rape up to two months in advance. A comparison of the modeling results from XGBR, SVR, and RFR shows that XGBR provides the best fit for both root-zone soil moisture and yield predictions. Compared to linear regression models, the three machine learning models significantly improve accuracy and fit, providing more precise evaluations of root-zone soil moisture and yield. In addition, through the comparison and verification of this method in other regions, it shows that the results also have certain reference value. The combination of the Ts-VI feature space and machine learning algorithms not only enables precise monitoring of root-zone soil moisture conditions but also predicts future crop yield trends, offering valuable insights for water resource manage","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"305 ","pages":"Article 109129"},"PeriodicalIF":5.9,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538327","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design and validation of a soil moisture-based wireless sensors network for the smart irrigation of a pear orchard 设计和验证用于梨园智能灌溉的基于土壤湿度的无线传感器网络
IF 5.9 1区 农林科学
Agricultural Water Management Pub Date : 2024-10-29 DOI: 10.1016/j.agwat.2024.109138
Fatma Hamouda, Àngela Puig-Sirera, Lorenzo Bonzi, Damiano Remorini, Rossano Massai, Giovanni Rallo
{"title":"Design and validation of a soil moisture-based wireless sensors network for the smart irrigation of a pear orchard","authors":"Fatma Hamouda,&nbsp;Àngela Puig-Sirera,&nbsp;Lorenzo Bonzi,&nbsp;Damiano Remorini,&nbsp;Rossano Massai,&nbsp;Giovanni Rallo","doi":"10.1016/j.agwat.2024.109138","DOIUrl":"10.1016/j.agwat.2024.109138","url":null,"abstract":"<div><div>In this study, a soil moisture-based wireless sensor network (SM-WSN) was transferred to support irrigation management at field scale. This smart irrigation service comes from a necessity and willingness to upgrade the regional weather-based decision support system of the Tuscany region (Italy). The sensor network was designed, hydrologically, and agronomically validated in a commercial pear orchard during four growing seasons (2019–2022). Initially, the micro irrigation system was assessed based on its water distribution uniformity (DU) performance. Then, a zoning analysis was carried out to delineate homogeneous areas according to the normalized difference vegetation index (NDVI) and soil bulk electrical conductivity (ECb). Unlike the ordinary irrigation scheduling applied in the farm, the smart system allowed maintaining the soil water content within a pre-defined optimal range, in which the upper and lower limits corresponded respectively to the soil field capacity and the threshold below which water stress occurs. Based on the smart irrigation management, a water-saving up to 50 % of the total water supplied with the ordinary scheduling was achieved during the investigated growing seasons. Moreover, the quality of the productions (i.e., °Brix, fruit size and flesh firmness) was in line with the standard market reference values. Consequently, the adoption of the new technology, which aims to identify the most appropriate irrigation management, has the potential to generate positive economic returns and reduce environmental impacts.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"305 ","pages":"Article 109138"},"PeriodicalIF":5.9,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538276","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Supplementary irrigation and reduced nitrogen application improve the productivity, water and nitrogen use efficiency of maize-soybean intercropping system in the semi-humid drought-prone region of China 补充灌溉和减少施氮提高中国半湿润干旱地区玉米-大豆间作系统的生产力和水氮利用效率
IF 5.9 1区 农林科学
Agricultural Water Management Pub Date : 2024-10-29 DOI: 10.1016/j.agwat.2024.109126
Zhengxin Zhao , Zongyang Li , Yao Li , Lianyu Yu , Xiaobo Gu , Huanjie Cai
{"title":"Supplementary irrigation and reduced nitrogen application improve the productivity, water and nitrogen use efficiency of maize-soybean intercropping system in the semi-humid drought-prone region of China","authors":"Zhengxin Zhao ,&nbsp;Zongyang Li ,&nbsp;Yao Li ,&nbsp;Lianyu Yu ,&nbsp;Xiaobo Gu ,&nbsp;Huanjie Cai","doi":"10.1016/j.agwat.2024.109126","DOIUrl":"10.1016/j.agwat.2024.109126","url":null,"abstract":"<div><div>Maize-soybean intercropping systems are widespread in North China. However, the combined effects of supplementary irrigation and different nitrogen (N) application rates on the productivity, water use efficiency (WUE), and N use efficiency (NUE) of such systems remain unclear. A field experiment was conducted in a semi-humid drought-prone region in Northwest China in 2022 and 2023 to assess the interaction effects of supplemental irrigation and different N application rates on the crop yields, WUE, and NUE of a maize-soybean intercropping system and a monoculture system. Three cropping systems were used: maize-soybean intercropping, maize monoculture, and soybean monoculture, with two irrigation treatment scenarios (rainfed and supplementary irrigation at 30 mm) and three N fertilizer rates for maize (240, 180, and 120 kgN ha<sup>−1</sup>). The land equivalent ratio (LER), <span><math><mrow><mo>∆</mo><mtext>water productivity</mtext></mrow></math></span> (<span><math><mtext>WP</mtext></math></span>), <span><math><mrow><mo>∆</mo><mtext>N harvest index</mtext></mrow></math></span> (<span><math><mtext>NHI</mtext></math></span>), and <span><math><mrow><mo>∆</mo><mtext>N partial factor productivity</mtext></mrow></math></span> (<span><math><mtext>NPFP</mtext></math></span>) of the maize-soybean intercropping system ranged from 1.06 to 1.11, 1.03–1.11, 1.17–1.34, and 1.16–1.28, respectively, demonstrating higher yields and resource of the intercropping system Supplementary irrigation significantly improved yield and resource use by improving the N complementarity effect and increased the economic by 17.24–31.16 %. A 25 % reduction in the N application rate (180 kgN ha<sup>−1</sup>) for maize increased the NPFP without decreasing the crop yield and WP whereas, a 50 % reduction (120 kgN ha<sup>−1</sup>) significantly decreased the crop yield and the economic benefits. In summary, supplementary irrigation can improve the productivity and resource use efficiency, and appropriate reduction of N fertilizer will not reduce the yield of intercropping system. This study provides practical insights for enhancing sustainable agriculture by improving water and N use efficiency in maize-soybean intercropping systems in the semi-humid arid-prone regions of China.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"305 ","pages":"Article 109126"},"PeriodicalIF":5.9,"publicationDate":"2024-10-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142538329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison of transformer, LSTM and coupled algorithms for soil moisture prediction in shallow-groundwater-level areas with interpretability analysis 变压器、LSTM 和耦合算法在浅层地下水位地区土壤湿度预测中的比较及可解释性分析
IF 5.9 1区 农林科学
Agricultural Water Management Pub Date : 2024-10-26 DOI: 10.1016/j.agwat.2024.109120
Yue Wang, Yuanyuan Zha
{"title":"Comparison of transformer, LSTM and coupled algorithms for soil moisture prediction in shallow-groundwater-level areas with interpretability analysis","authors":"Yue Wang,&nbsp;Yuanyuan Zha","doi":"10.1016/j.agwat.2024.109120","DOIUrl":"10.1016/j.agwat.2024.109120","url":null,"abstract":"<div><div>Accurate quantification of soil moisture is essential for understanding water and energy exchanges between the atmosphere and the Earth’s surface, as well as for agricultural applications. Predicting soil moisture content is vital for efficient water management, irrigation scheduling, and drought monitoring. Traditional forecasting methods, such as numerical regression models, often struggle due to various influencing factors and poor observation data quality. In contrast, deep learning algorithms, particularly recurrent and convolutional neural networks, show promise in predicting nonlinear data like soil moisture. This study focuses on shallow groundwater regions, using groundwater levels and meteorological data as features while coupling the Transformer model with other neural network structures. We investigate the potential of attention-based neural networks for soil moisture time series prediction. Our findings demonstrate that the Transformer model achieves an average R<sup>2</sup> of 0.523 across different time lags, outperforming the LSTM model with an R<sup>2</sup> of 0.485. The introduction of LSTM enhances the Transformer’s stability in handling temporal changes. Additionally, we verified the importance of groundwater for soil moisture prediction. This study introduces new methods for soil moisture prediction and offers new insights and recommendations for the development of artificial intelligence technology for soil moisture prediction.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"305 ","pages":"Article 109120"},"PeriodicalIF":5.9,"publicationDate":"2024-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534431","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Irrigation of rangeland soils with coal seam water - A lysimeter study on soil physico-chemical properties 用煤层水灌溉牧场土壤--关于土壤理化性质的溶液计研究
IF 5.9 1区 农林科学
Agricultural Water Management Pub Date : 2024-10-25 DOI: 10.1016/j.agwat.2024.109135
J. Bernhard Wehr , Scott A. Dalzell , David C. Macfarlane , Neal W. Menzies , Peter M. Kopittke
{"title":"Irrigation of rangeland soils with coal seam water - A lysimeter study on soil physico-chemical properties","authors":"J. Bernhard Wehr ,&nbsp;Scott A. Dalzell ,&nbsp;David C. Macfarlane ,&nbsp;Neal W. Menzies ,&nbsp;Peter M. Kopittke","doi":"10.1016/j.agwat.2024.109135","DOIUrl":"10.1016/j.agwat.2024.109135","url":null,"abstract":"<div><div>Groundwater extracted from coal seams may be a resource for irrigation of land in areas with low rainfall, but the effect of this water on soil properties needs to be established. A lysimeter study was conducted using intact soil cores (0.75 m diameter, 1.4 m deep) of four different soil types (Sodic Vertisol, Calcic Solonetz, Haplic Solonetz and Xanthic Lixisol) from southern Queensland, Australia, to study changes in soil physical and chemical properties under accelerated rates of irrigation with coal seam (CS) water (electrical conductivity (ECw) of 3 dS/m, pH of 8.8, and a sodium adsorption ratio (SAR) of 100). Cores were also alternately irrigated with deionised water to simulate rainfall, and either lucerne (<em>Medicago sativa</em> L) or Rhodes grass (<em>Chloris gayana</em> Kunth.) where grown in the lysimeters. The soil surface was treated with stoichiometric rates of elemental sulfur (1.4 t/ha) and gypsum (2.5 t/ha) prior to every 450 mm CS water irrigation to minimise changes in SAR and pH. Three of the soils (Vertisol, both Solonetz) had low leaching fractions (≤ 0.1 %) due to their clay texture and were initially saline in the subsoil (ECse 1.4–4.4 dS/m). Irrigation with CS water resulted in a gradual increase in salt content (EC) and SAR throughout the soil profile, but pH was not increased due to surface-applied elemental sulfur. The Lixisol had a higher hydraulic conductivity and leaching fraction (6.7 %) due to is loamy texture – in this soil, accumulated salts could be leached and no increase in salinity or pH were measured. Despite an increase in SAR for this loamy soil, no structural degradation was observed, and it could be sustainably irrigated with up to 3200 mm CS water (with cumulative irrigation volume of 5400 mm). Hence, leaching fractions rather than soil chemistry are good indicators to identify soils suitable for irrigation with CS water that is saline, alkaline, and sodic.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"305 ","pages":"Article 109135"},"PeriodicalIF":5.9,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534427","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Characterizing the hysteretic effects of water and salinity stresses on root-water-uptake 确定水分和盐分胁迫对根系吸水的滞后效应
IF 5.9 1区 农林科学
Agricultural Water Management Pub Date : 2024-10-25 DOI: 10.1016/j.agwat.2024.109121
Tianshu Wang , Lining Liu , Qiang Zuo , Xun Wu , Yanqi Xu , Jianchu Shi , Jiandong Sheng , Pingan Jiang , Alon Ben-Gal
{"title":"Characterizing the hysteretic effects of water and salinity stresses on root-water-uptake","authors":"Tianshu Wang ,&nbsp;Lining Liu ,&nbsp;Qiang Zuo ,&nbsp;Xun Wu ,&nbsp;Yanqi Xu ,&nbsp;Jianchu Shi ,&nbsp;Jiandong Sheng ,&nbsp;Pingan Jiang ,&nbsp;Alon Ben-Gal","doi":"10.1016/j.agwat.2024.109121","DOIUrl":"10.1016/j.agwat.2024.109121","url":null,"abstract":"<div><div>Characterizing the effects of previous water and salinity stresses is critical for the evaluation of plant water status, which, in turn, is essential for understanding soil-plant water relations and optimizing irrigation schemes. Recent research has found that hysteresis of plant response following water stress alone can be described by an exponential function of the stress degree on the previous day. To explore and quantify the effects of hysteresis concerning salinity stress and combined water-salinity stress, a hydroponic experiment and a soil column experiment on winter wheat, and a field experiment on cotton were conducted. Like water stress, previous salinity stress and combined water-salinity stress also resulted in hysteretic effects on root-water-uptake. Leaf stomatal conductance and plant transpiration rate of stressed crops could only recover gradually from a previous stressed status after re-watering. When stress was mild, compensatory recovery was found, while incomplete recovery occurred when stress was severe. Although the recovery process was closely related to stress history and type, a recovery coefficient was quantified universally with an exponential function of the stress extent on the previous day (with a coefficient of determination <em>R</em><sup>2</sup> ≥ 0.60). Consideration of hysteresis for water and salinity stresses with a mathematical model led to significant improvement in the simulation of both relative transpiration rate (<em>R</em><sup>2</sup> = 0.94, root mean squared error <em>RMSE</em> = 0.04, maximal absolute error <em>MAE</em> = 0.12) and soil water content (<em>R</em><sup>2</sup> = 0.90, <em>RMSE</em> = 0.01 cm<sup>3</sup> cm<sup>–3</sup>, <em>MAE</em> = 0.03 cm<sup>3</sup> cm<sup>–3</sup>), especially during the recovery periods severely affected by historical stress. Consideration of hysteresis is expected to benefit regulation of soil water and salinity and thus enhance water use efficiency. However, the mechanisms underlying hysteresis, especially the compensatory recovery mechanisms, still need to be further investigated.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"305 ","pages":"Article 109121"},"PeriodicalIF":5.9,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534429","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Quantifying the rainfall variability effects on crop growth and production in the intensified annual forage - winter wheat rotation systems in a semiarid region of China 量化降雨量变化对中国半干旱地区强化一年生牧草-冬小麦轮作系统中作物生长和产量的影响
IF 5.9 1区 农林科学
Agricultural Water Management Pub Date : 2024-10-25 DOI: 10.1016/j.agwat.2024.109131
Xingfa Lai , Yongliang You , Xianlong Yang , Zikui Wang , Yuying Shen
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引用次数: 0
A distributed simulation-optimization framework for many-objective water resources allocation in canal-well combined irrigation district under diverse supply and demand scenarios 不同供需情景下渠井结合灌区多目标水资源配置的分布式模拟优化框架
IF 5.9 1区 农林科学
Agricultural Water Management Pub Date : 2024-10-25 DOI: 10.1016/j.agwat.2024.109109
Qianzuo Zhao , Yanan Jiang , Qianyu Wang , Fenfang Xu
{"title":"A distributed simulation-optimization framework for many-objective water resources allocation in canal-well combined irrigation district under diverse supply and demand scenarios","authors":"Qianzuo Zhao ,&nbsp;Yanan Jiang ,&nbsp;Qianyu Wang ,&nbsp;Fenfang Xu","doi":"10.1016/j.agwat.2024.109109","DOIUrl":"10.1016/j.agwat.2024.109109","url":null,"abstract":"<div><div>To address the issues of both water resources allocation and sustainable management in agriculture areas with rising food demand, a simulation-optimization framework based on Flopy and Pymoo was proposed and developed for canal-well combined irrigation districts. The proposed framework first solved the many-objective water resources allocation problem which integrates groundwater simulation, crop production, and farmer income modules to quantitatively reveal the various trade-offs and synergies by using NSGA-III algorithm. The Entropy-TOPSIS method was then applied to recommend proper water allocation schemes. The proposed framework was further tested in Baojixia irrigation district considering various water supply and crop demand scenarios based on Copula-based uncertainty analysis. The Key findings are as follows: (1) the proposed framework could effectively optimize conjunctive water resources allocation problems of both surface water and groundwater; (2) low supply combined with high demand (p=0.17) is more likely to occur than high supply with high demand (p=0.02); (3) increased crop demand and restricted surface water negatively impact both water productivity and groundwater sustainability; and (4) the cumulative groundwater drawdown of recommend schemes is 36.9 % and 6.5 % higher under low to medium supply scenarios, while water productivity of recommend schemes decreases 28.2 % and 9.7 % with high and medium demand. This framework could provide useful insights for sustainable agricultural water management in canal-well combined irrigation district with various uncertainties in supply and demand scenarios.</div></div>","PeriodicalId":7634,"journal":{"name":"Agricultural Water Management","volume":"305 ","pages":"Article 109109"},"PeriodicalIF":5.9,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142534426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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