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Thirty-one Years Study of Integrated Nutrient Management on Physico-Chemical Properties of Soil Under Rice–Wheat Cropping System
Communications in Soil Science and Plant Analysis ( IF 1.8 ) Pub Date : 2020-07-03 , DOI: 10.1080/00103624.2020.1791156
Parminder S. Sandhu 1 , Sohan S. Walia 2 , Roopinder S. Gill 3 , Gurmeet S. Dheri 3
Affiliation  

ABSTRACT Long-term sustainability is the concern of today’s agriculture. A long-term field experiment (since 1983) comprising of 14 treatments with different combinations of inorganic (NPK) and organic fertilizers (such as farmyard manure, wheat cut straw and Sesbania aculeate as green manure) was conducted to evaluate their effect on soil physico-chemical properties under a rice–wheat system. There was significant (P < .05) reduction in bulk density and soil strength but significant (P < .05) increase in infiltration rate and water retention with the use of organic manures along with chemical fertilizers. Organic C, nitrate-N, ammonical-N, and nutrient content were significantly (P < .05) higher in integrated nutrient management treated plots as compared to control. The highest carbon sequestration rate over the 3 decades was recorded in T6, i.e., 50% recommended NPK dose through fertilizers + 50% N through FYM in kharif and 100% recommended NPK dose through fertilizers in rabi (0.29 Mg C ha−1 year−1) as compared to chemically fertilized plots T5, i.e., 100% recommended NPK dose through fertilizers (0.13 Mg C ha−1 year−1). A positive and significant correlation was observed between organic carbon and soil physico-chemical properties barring bulk density, soil strength, pH, and electrical conductivity. The results clearly suggest that integrated use of balanced chemical fertilizers in combination with organic manures on long-term basis improves soil physico-chemical properties and soil carbon sequestration thereby having the potential to enhance soil sustainability.

中文翻译:

水稻-小麦种植制度下土壤理化性质综合养分管理研究31年

摘要 长期可持续性是当今农业关注的问题。一项长期田间试验(自 1983 年以来)包括 14 个不同组合的无机 (NPK) 和有机肥料(如农家肥、麦秸秆和田菁作为绿肥)的处理,以评估它们对土壤物理的影响。 - 稻麦系统下的化学性质。随着有机肥和化肥的使用,容重和土壤强度显着降低(P < .05),但入渗率和保水率显着增加(P < .05)。与对照相比,在综合养分管理处理的地块中,有机碳、硝酸盐-N、氨-N 和养分含量显着(P < .05)更高。过去 3 年中最高的碳封存率记录在 T6 中,即 50% 推荐的 NPK 剂量通过肥料 + 50% N 通过 FYM 在 kharif 和 100% 推荐 NPK 剂量通过肥料在拉比(0.29 Mg C ha−1 年− 1) 与化学施肥地块 T5 相比,即 100% 推荐的 NPK 剂量通过肥料(0.13 Mg C ha-1 年-1)。除了容重、土壤强度、pH 值和电导率外,在有机碳和土壤理化性质之间观察到了显着的正相关。结果清楚地表明,长期综合使用平衡化肥和有机肥可以改善土壤理化性质和土壤固碳,从而具有提高土壤可持续性的潜力。与化学施肥地块 T5 相比,50% 推荐的 NPK 剂量通过肥料 + 50% N 通过 FYM 在 kharif 和 100% 推荐 NPK 通过肥料在拉比(0.29 Mg C ha−1 年−1)中使用,即 100% 推荐 NPK通过肥料施用(0.13 Mg C ha−1 年−1)。除了容重、土壤强度、pH 值和电导率外,在有机碳和土壤理化性质之间观察到了显着的正相关。结果清楚地表明,长期综合使用平衡化肥和有机肥可以改善土壤理化性质和土壤固碳,从而具有提高土壤可持续性的潜力。与化学施肥地块 T5 相比,50% 推荐的 NPK 剂量通过肥料 + 50% N 通过 FYM 在 kharif 和 100% 推荐 NPK 通过肥料在拉比(0.29 Mg C ha−1 年−1)中使用,即 100% 推荐 NPK通过肥料施用(0.13 Mg C ha−1 年−1)。除了容重、土壤强度、pH 值和电导率外,在有机碳和土壤理化性质之间观察到了显着的正相关。结果清楚地表明,长期综合使用平衡化肥和有机肥可以改善土壤理化性质和土壤固碳,从而具有提高土壤可持续性的潜力。29 Mg C ha−1 年−1) 与化学施肥地块 T5 相比,即 100% 通过肥料推荐的 NPK 剂量(0.13 Mg C ha−1 年−1)。除了容重、土壤强度、pH 值和电导率外,在有机碳和土壤理化性质之间观察到了显着的正相关。结果清楚地表明,长期综合使用平衡化肥和有机肥可以改善土壤理化性质和土壤固碳,从而具有提高土壤可持续性的潜力。29 Mg C ha−1 年−1) 与化学施肥地块 T5 相比,即 100% 通过肥料推荐的 NPK 剂量(0.13 Mg C ha−1 年−1)。除了容重、土壤强度、pH 值和电导率外,在有机碳和土壤理化性质之间观察到了显着的正相关。结果清楚地表明,长期综合使用平衡化肥和有机肥可以改善土壤理化性质和土壤固碳,从而具有提高土壤可持续性的潜力。土壤强度、pH 值和电导率。结果清楚地表明,长期综合使用平衡化肥和有机肥可以改善土壤理化性质和土壤固碳,从而具有提高土壤可持续性的潜力。土壤强度、pH 值和电导率。结果清楚地表明,长期综合使用平衡化肥和有机肥可以改善土壤理化性质和土壤固碳,从而具有提高土壤可持续性的潜力。
更新日期:2020-07-03
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