嘉兴市长期秸秆还田水稻产量和土壤肥力的调查

Journal of Zhejiang Agricultural Sciences(2021)

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Abstract
调查嘉兴市南湖区和秀洲区4个长期(4~6 a)秸秆还田种粮大户基地,测定水稻产量、植株氮积累水平、土壤pH、有机质和部分矿质元素含量.结果表明,不同秸秆还田年限影响水稻氮积累水平,差异主要体现在稻穗的氮积累,谷草比分析表明,长期秸秆还田增加了水稻谷物的物质积累.长期秸秆还田可以降低土壤容重,增加土壤全氮、有效磷、速效钾和碱解氮的含量.
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