{"title":"稻麦长期耕作和残留物管理试验(LT&RE)十五年后土壤质量指数的计算","authors":"Ram K. Fagodiya , Gargi Sharma , Kamlesh Verma , Arvind Kumar Rai , Kailash Prajapat , Ranbir Singh , Priyanka Chandra , Parvender Sheoran , Rajender Kumar Yadav , A.K. Biswas","doi":"10.1016/j.agsy.2024.104039","DOIUrl":null,"url":null,"abstract":"<div><h3>CONTEXT</h3><p>Maintaining the optimal soil quality stands a fundamental determinant for sustained yield of rice-wheat system (RWS) in Indo Gangetic plains (IGP) of India. To uphold soil quality, implementing minimum/no tillage along with addition of crop residue are required.</p></div><div><h3>OBJECTIVE</h3><p>To evaluate the long-term (15 years) impact of tillage and residue management experiment (LT&RE) initiated in 2006 on soil quality index (SQI) and to establish the quantitative relationship between the SQI and crops yield under various crop establishment practices.</p></div><div><h3>METHODS</h3><p>Experiment consisted of six treatment combinations including LT&RE namely, (i) conventional tillage without residue (CT − R), (ii) conventional tillage with residue incorporation (CT + R), (iii) reduced tillage without residue (RT − R), (iv) reduced tillage with residue incorporation (RT + R), (v) zero tillage without residue (ZT − R), and (vi) zero tillage with residue retention (ZT + R). The SQI was used as an instrument based soil physical [bulk density (BD), soil penetration resistance (SPR) and infiltration rate (IR)], chemical [soil pH (pH<sub>1:2</sub>), electrical conductivity (EC<sub>1:2</sub>), soil organic carbon (OC) available nitrogen (N), phosphorus (P), potassium (K), iron (Fe), manganese (Mn), copper (Cu) and zinc (Zn)], and biological [microbial biomass carbon (MBC), alkaline phosphatase activity (ALP), and dehydrogenase activity (DHA)], properties as these are very useful indicators of soil's functions, fertility and agronomic productivity. Soil samples were collected from 0–15 and 15–30 cm soil depth from each treatment after harvesting of wheat in 2021 and 2022.</p></div><div><h3>RESULTS AND CONCLUSIONS</h3><p>The ZT + R treatment exhibited the lowest bulk density (1.45 Mg m<sup>−3</sup>) and soil penetration resistance (1306.02 KPa) at surface soil, resulting in higher infiltration rates (7.80 mm h<sup>−1</sup>). Adoption of LT&RE led to a notable increase (15.8–25.7%) in soil organic carbon (SOC) stock across all the treatment combinations compared to CT-R. The enhanced SOC and better physical soil conditions increased microbial activities. The ZT + R treatment had the highest levels of MBC (271.63 mg kg<sup>−1</sup> soil), alkaline phosphatase (187.08 μmol p-nitrophenol g<sup>−1</sup> h<sup>−1</sup>), and dehydrogenase activity (122.00 μg TPF g<sup>−1</sup> 24 h<sup>−1</sup>). Despite a significant increase (3.8 and 6.9%) in wheat yield, a notable decrease in rice yield (10.5 and 16.7%) was recorded, leading to 2.9 and 6.2% yield reduction in RWS under RT and ZT treatments, respectively.</p></div><div><h3>SIGNIFICANCE</h3><p>Addressing the decline in rice yield, improved management of direct seeded rice (DSR) in RT/ZT system, or the crop diversification of long-term DSR with suitable alternative crops in rainy season under LT&RE are recommended strategies.</p></div>","PeriodicalId":7730,"journal":{"name":"Agricultural Systems","volume":null,"pages":null},"PeriodicalIF":6.1000,"publicationDate":"2024-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Computation of soil quality index after fifteen years of long-term tillage and residue management experiment (LT&RE) under rice wheat system\",\"authors\":\"Ram K. Fagodiya , Gargi Sharma , Kamlesh Verma , Arvind Kumar Rai , Kailash Prajapat , Ranbir Singh , Priyanka Chandra , Parvender Sheoran , Rajender Kumar Yadav , A.K. Biswas\",\"doi\":\"10.1016/j.agsy.2024.104039\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>CONTEXT</h3><p>Maintaining the optimal soil quality stands a fundamental determinant for sustained yield of rice-wheat system (RWS) in Indo Gangetic plains (IGP) of India. To uphold soil quality, implementing minimum/no tillage along with addition of crop residue are required.</p></div><div><h3>OBJECTIVE</h3><p>To evaluate the long-term (15 years) impact of tillage and residue management experiment (LT&RE) initiated in 2006 on soil quality index (SQI) and to establish the quantitative relationship between the SQI and crops yield under various crop establishment practices.</p></div><div><h3>METHODS</h3><p>Experiment consisted of six treatment combinations including LT&RE namely, (i) conventional tillage without residue (CT − R), (ii) conventional tillage with residue incorporation (CT + R), (iii) reduced tillage without residue (RT − R), (iv) reduced tillage with residue incorporation (RT + R), (v) zero tillage without residue (ZT − R), and (vi) zero tillage with residue retention (ZT + R). The SQI was used as an instrument based soil physical [bulk density (BD), soil penetration resistance (SPR) and infiltration rate (IR)], chemical [soil pH (pH<sub>1:2</sub>), electrical conductivity (EC<sub>1:2</sub>), soil organic carbon (OC) available nitrogen (N), phosphorus (P), potassium (K), iron (Fe), manganese (Mn), copper (Cu) and zinc (Zn)], and biological [microbial biomass carbon (MBC), alkaline phosphatase activity (ALP), and dehydrogenase activity (DHA)], properties as these are very useful indicators of soil's functions, fertility and agronomic productivity. Soil samples were collected from 0–15 and 15–30 cm soil depth from each treatment after harvesting of wheat in 2021 and 2022.</p></div><div><h3>RESULTS AND CONCLUSIONS</h3><p>The ZT + R treatment exhibited the lowest bulk density (1.45 Mg m<sup>−3</sup>) and soil penetration resistance (1306.02 KPa) at surface soil, resulting in higher infiltration rates (7.80 mm h<sup>−1</sup>). Adoption of LT&RE led to a notable increase (15.8–25.7%) in soil organic carbon (SOC) stock across all the treatment combinations compared to CT-R. The enhanced SOC and better physical soil conditions increased microbial activities. The ZT + R treatment had the highest levels of MBC (271.63 mg kg<sup>−1</sup> soil), alkaline phosphatase (187.08 μmol p-nitrophenol g<sup>−1</sup> h<sup>−1</sup>), and dehydrogenase activity (122.00 μg TPF g<sup>−1</sup> 24 h<sup>−1</sup>). Despite a significant increase (3.8 and 6.9%) in wheat yield, a notable decrease in rice yield (10.5 and 16.7%) was recorded, leading to 2.9 and 6.2% yield reduction in RWS under RT and ZT treatments, respectively.</p></div><div><h3>SIGNIFICANCE</h3><p>Addressing the decline in rice yield, improved management of direct seeded rice (DSR) in RT/ZT system, or the crop diversification of long-term DSR with suitable alternative crops in rainy season under LT&RE are recommended strategies.</p></div>\",\"PeriodicalId\":7730,\"journal\":{\"name\":\"Agricultural Systems\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":6.1000,\"publicationDate\":\"2024-06-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Agricultural Systems\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S0308521X24001896\",\"RegionNum\":1,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"AGRICULTURE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Agricultural Systems","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0308521X24001896","RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRICULTURE, MULTIDISCIPLINARY","Score":null,"Total":0}
Computation of soil quality index after fifteen years of long-term tillage and residue management experiment (LT&RE) under rice wheat system
CONTEXT
Maintaining the optimal soil quality stands a fundamental determinant for sustained yield of rice-wheat system (RWS) in Indo Gangetic plains (IGP) of India. To uphold soil quality, implementing minimum/no tillage along with addition of crop residue are required.
OBJECTIVE
To evaluate the long-term (15 years) impact of tillage and residue management experiment (LT&RE) initiated in 2006 on soil quality index (SQI) and to establish the quantitative relationship between the SQI and crops yield under various crop establishment practices.
METHODS
Experiment consisted of six treatment combinations including LT&RE namely, (i) conventional tillage without residue (CT − R), (ii) conventional tillage with residue incorporation (CT + R), (iii) reduced tillage without residue (RT − R), (iv) reduced tillage with residue incorporation (RT + R), (v) zero tillage without residue (ZT − R), and (vi) zero tillage with residue retention (ZT + R). The SQI was used as an instrument based soil physical [bulk density (BD), soil penetration resistance (SPR) and infiltration rate (IR)], chemical [soil pH (pH1:2), electrical conductivity (EC1:2), soil organic carbon (OC) available nitrogen (N), phosphorus (P), potassium (K), iron (Fe), manganese (Mn), copper (Cu) and zinc (Zn)], and biological [microbial biomass carbon (MBC), alkaline phosphatase activity (ALP), and dehydrogenase activity (DHA)], properties as these are very useful indicators of soil's functions, fertility and agronomic productivity. Soil samples were collected from 0–15 and 15–30 cm soil depth from each treatment after harvesting of wheat in 2021 and 2022.
RESULTS AND CONCLUSIONS
The ZT + R treatment exhibited the lowest bulk density (1.45 Mg m−3) and soil penetration resistance (1306.02 KPa) at surface soil, resulting in higher infiltration rates (7.80 mm h−1). Adoption of LT&RE led to a notable increase (15.8–25.7%) in soil organic carbon (SOC) stock across all the treatment combinations compared to CT-R. The enhanced SOC and better physical soil conditions increased microbial activities. The ZT + R treatment had the highest levels of MBC (271.63 mg kg−1 soil), alkaline phosphatase (187.08 μmol p-nitrophenol g−1 h−1), and dehydrogenase activity (122.00 μg TPF g−1 24 h−1). Despite a significant increase (3.8 and 6.9%) in wheat yield, a notable decrease in rice yield (10.5 and 16.7%) was recorded, leading to 2.9 and 6.2% yield reduction in RWS under RT and ZT treatments, respectively.
SIGNIFICANCE
Addressing the decline in rice yield, improved management of direct seeded rice (DSR) in RT/ZT system, or the crop diversification of long-term DSR with suitable alternative crops in rainy season under LT&RE are recommended strategies.
期刊介绍:
Agricultural Systems is an international journal that deals with interactions - among the components of agricultural systems, among hierarchical levels of agricultural systems, between agricultural and other land use systems, and between agricultural systems and their natural, social and economic environments.
The scope includes the development and application of systems analysis methodologies in the following areas:
Systems approaches in the sustainable intensification of agriculture; pathways for sustainable intensification; crop-livestock integration; farm-level resource allocation; quantification of benefits and trade-offs at farm to landscape levels; integrative, participatory and dynamic modelling approaches for qualitative and quantitative assessments of agricultural systems and decision making;
The interactions between agricultural and non-agricultural landscapes; the multiple services of agricultural systems; food security and the environment;
Global change and adaptation science; transformational adaptations as driven by changes in climate, policy, values and attitudes influencing the design of farming systems;
Development and application of farming systems design tools and methods for impact, scenario and case study analysis; managing the complexities of dynamic agricultural systems; innovation systems and multi stakeholder arrangements that support or promote change and (or) inform policy decisions.