ABSTRACT

Long-term application of fertilizer and manure can affect soil properties with implications on the productivity and sustainability of crops. Data from a long-term fertilizer experiment at Bhubaneswar, India was used to study the impact of seven treatments viz. control, application of recommended dose of NPK (NPK), 150% NPK (1.5 NPK), NPK + Zn (NPKZn), NPK + FYM (NPKFM), NPK + Zn + B (NPKZnB) and NPK + Zn + S (NPKZnS) on productivity, sustainability (in terms of sustainable yield index (SYI)), soil properties (physical, chemical and biological) and soil organic carbon (SOC) sequestration of rice-rice cropping system. Results revealed that application of NPKFYM improved the average grain yield and SYI of wet and dry season rice and the system by 36.3, 21.6, and 28.3% and 28.8, 17.1, 22.8%, respectively, over NPK alone. Application of NPKFYM improved soil fertility by stimulating microbial activity, improving soil physical health, resisting drop in pH to more acidity and improving CEC and macro- and micro-nutrients levels. NPKFYM also sequestered higher SOC than NPK alone. Therefore, application of NPKFYM can be recommended for sustaining the productivity of the rice-rice system with improvement of soil health under Inceptisols of Eastern India.

摘要

长期施用化肥和粪肥会影响土壤特性，进而影响作物的生产力和可持续性。来自印度布巴内斯瓦尔的长期肥料实验数据用于研究七种处理的影响，即。控制，应用推荐剂量的 NPK (NPK)、150% NPK (1.5 NPK)、NPK + Zn (NPKZn)、NPK + FYM (NPKFM)、NPK + Zn + B (NPKZnB) 和 NPK + Zn + S (NPKZnS) ) 的生产力、可持续性（就可持续产量指数 (SYI) 而言）、土壤特性（物理、化学和生物）和水稻 - 水稻种植系统的土壤有机碳 (SOC) 封存。结果表明，与单独施用NPK相比，NPKFYM的施用使干湿季稻和系统的平均籽粒产量和SYI分别提高了36.3%、21.6%和28.3%和28.8%、17.1%、22.8%。NPKFYM 的应用通过刺激微生物活动、改善土壤物理健康、抵抗 pH 值下降到更高的酸度以及提高 CEC 和宏量和微量营养素水平来提高土壤肥力。NPKFYM 也比单独的 NPK 隔离了更高的 SOC。因此，可以推荐使用 NPKFYM 来维持稻米系统的生产力并改善土壤健康。东印度的Inceptisol。