Rajeev Kumar Gupta, Paramjit Kaur Sraw, Jasjeet Singh Kang, J. Kaur, A. Kalia, V. Sharma, Surjeet Singh Manhas, Nadhir Al-Ansari, A. Alataway, A. Dewidar, Mohamed A. Mattar
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引用次数: 0
摘要
:本研究比较了主地块(自2008年以来)的六种作物残留管理技术和两年(即2019年和2020年)沙壤土中水稻作物亚地块的三种分解氮水平,即75、100和125 kg N/ha。本试验评价了稻麦轮作制度对水稻生产力、土壤有机碳含量和养分需求的长期影响。结果表明,不同的作物秸秆管理措施和氮水平显著影响水稻的生长、产量和产量属性,并提高了粮食和秸秆对养分的吸收。2019年和2020年,在保留或掺入水稻和小麦残渣的情况下,最高粮食产量分别比传统(无秸秆)处理高20.8%和17.8%。无残留水稻的产量在125公斤/公顷时有显著的响应。然而,在水稻和小麦残留的情况下,在这两个年份,水稻产量对施用超过75公斤N/ha的氮没有反应。
Influence of 11 years of crop residue management on rice productivity under varied nitrogen levels in the rice-wheat cropping system
: The present study compares the six crop residue management techniques in main plots (since 2008) and three split nitrogen (N) levels, i.e., 75, 100 and 125 kg N/ha in subplots for rice crops for two years, i.e., 2019 and 2020, in sandy loam soil under field conditions. This experiment evaluated the long-term effect on rice productivity, soil organic carbon content and nutrient requirement in rice-wheat cropping system. The results revealed that different crop residue management practices and N levels significantly influenced rice growth, yield and yield attributes and improved nutrient uptake by grain and straw. Maximum grain yields of 20.8% and 17.8% higher over the conventional (no straw) treatment during 2019 and 2020, respectively, were recorded where the rice and wheat residue was retained or incorporated. The rice grain yield without residue responded significantly up to 125 kg N/ha. Whereas, with rice and wheat residue, rice grain yield did not respond to the application of N beyond 75 kg N/ha during both years.
期刊介绍:
Experimental biology, agronomy, natural resources, and the environment; plant development, growth and productivity, breeding and seed production, growing of crops and their quality, soil care, conservation and productivity; agriculture and environment interactions from the perspective of sustainable development. Articles are published in English.