Combined use of biochar and sprinkler irrigation may enhance rice productivity in water-stressed regions

IF 3.5 2区 农林科学 Q1 AGRICULTURE, MULTIDISCIPLINARY
José Manuel Rato-Nunes , Carmen Martín-Franco , David Peña , Jaime Terrón-Sánchez , Luis Andrés Vicente , Damián Fernández-Rodríguez , Ángel Albarrán , Antonio López-Piñeiro
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引用次数: 1

Abstract

A 2-year field experiment was conducted to analyse the effects of fresh and aged biochar on soil properties, as well as herbicide effectiveness and rice-yield components in a Mediterranean environment. Six managements were used: no-tillage and sprinkler irrigation either without (NoT) or with first-year biochar application (NoTB), conventional tillage and sprinkler irrigation either without (ConvT) or with first-year biochar application (ConvTB), conventional tillage and flooding irrigation either without (ConvTF) or with first-year biochar application (ConvTFB). The measurements done in the first (2018) and second (2019) years after biochar addition were taken to determine its fresh and aged effects, respectively. The application of biochar led to an improvement of the soil properties such as increase in the soil's organic carbon content, pH, and dehydrogenase activity. It also reduced weed pressure, regardless of the management used, and sprinkler systems were found to have the greatest herbicide effectiveness, especially in ConvT and ConvTB. In terms of production, there were significant increases in yield with the application of fresh biochar, in the amended managements under tillage compared with their unamended counterparts. The greatest yields were found under ConvT and ConvTB, with mean values for both treatments of 10,770 and 11,299 kg ha−1 in the fresh and aged years, respectively. Furthermore, water productivity reached its greatest values when sprinkler was used, especially with tillage for which the application of fresh biochar increased water productivity by a factor of 1.09 relative to ConvT. Therefore, sprinkler irrigation in combination with tillage and biochar applications can be regarded as an efficient alternative to flooding irrigation in order to ensure productive viability of rice in water-stressed regions.

在缺水地区,生物炭与喷灌相结合可提高水稻产量
通过为期2年的田间试验,分析了新鲜和陈化生物炭对地中海环境下土壤特性、除草剂有效性和水稻产量组成部分的影响。采用了六种管理方式:免耕和喷灌,不施用(NoT)或第一年施用生物炭(NoTB);常规耕作和喷灌,不施用(ConvT)或第一年施用生物炭(ConvTB);常规耕作和漫灌,不施用(ConvTF)或第一年施用生物炭(ConvTFB)。分别在添加生物炭后的第一年(2018年)和第二年(2019年)进行测量,以确定其新鲜和陈年效果。施用生物炭后,土壤的有机碳含量、pH值和脱氢酶活性均有所提高。无论使用何种管理方式,它也降低了杂草的压力,并且发现喷洒系统具有最大的除草剂有效性,特别是在ConvT和ConvTB中。在生产方面,改良后的耕作方式与未改良的耕作方式相比,施用新鲜生物炭显著提高了产量。以ConvT和ConvTB处理产量最高,鲜年和老龄年的平均产量分别为10,770和11,299 kg ha - 1。此外,水分生产力在使用喷灌时达到最大值,特别是在施用新鲜生物炭的耕作中,相对于常规耕作,水分生产力提高了1.09倍。因此,喷灌与耕作和生物炭施用相结合可被视为洪水灌溉的有效替代方案,以确保缺水地区水稻的生产活力。
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来源期刊
Annals of Agricultural Science
Annals of Agricultural Science AGRICULTURE, MULTIDISCIPLINARY-
CiteScore
12.60
自引率
0.00%
发文量
18
审稿时长
33 days
期刊介绍: Annals of Agricultural Sciences (AOAS) is the official journal of Faculty of Agriculture, Ain Shams University. AOAS is an open access peer-reviewed journal publishing original research articles and review articles on experimental and modelling research at laboratory, field, farm, landscape, and industrial levels. AOAS aims to maximize the quality of the agricultural sector across the globe with emphasis on the Arabian countries by focusing on publishing the high-quality applicable researches, in addition to the new methods and frontiers leading to maximizing the quality and quantity of both plant and animal yield and final products.
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