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作 者 ：庄恒扬,曹卫星,沈新平,陆建飞

期 刊 ：生态学报 2000年 20卷 5期 页码：766~770

关键词：集约生产；麦-稻两熟；养分平衡；秸秆还田；

Keywords:intensive cropping, wheat rice double cropping, nutrient balance, straw manure,

摘 要 ：以兴化市钓鱼乡为例 ,研究了麦 -稻两熟集约生产的土壤有机质、养分的动态平衡以及调控途径。结果表明 ,在不同的管理模式下 ,高产农田有机物归还量比一般产量条件下高 1 4 .2 2 %～ 1 8.69% ,氮、磷盈余量、钾亏缺量分别为 3 80 .0～4 3 2 kg/hm2、1 9.1 5～ 3 2 .78kg/hm2、99.1～ 1 74 .0 kg/hm2 ,与一般产量条件下比较 ,氮、磷盈余量提高 ,而钾的亏缺量相近。提出了改善高产农田土壤肥力的主要措施。

Abstract:Balance and adjustment of soil organic matter and nutrients under intensive wheat rice double cropping were studied in Lixiahe region of Jiangsu Province.The results showed that the amount of returned organic material in high yielding fields is 14.22%～18.69% higher than that in normal yielding fields.N and P surpluses and K deficits in the soils under high yielding were 380.0～432.0 kg/hm 2,19.15～32.78 kg/hm 2 and 99.1～174.0 kg/hm 2,respectively,N and P surplus being higher than and K deficit being abou...

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