麦秆还田有机氮素对水稻增产的机理  

UPTAKE AND UTILIZATION OF ORGANIC NITROGEN FROM FIELD-RETURNED WHEAT STRAW IN RICE

作　　者：金亚放[1] 孙耀琛 柯福源[2] 汪寅虎[2] 

机构地区：[1]上海市农业科学院作物育种栽培研究所,上海201106 [2]上海市农业科学院土壤肥料研究所,上海201106

出　　处：《上海农业学报》1991年第2期62-66,共5页Acta Agriculturae Shanghai

摘　　要：本文应用稳定性同位素^(15)N示踪技术,研究麦秆还田条件下,水稻对其有机氮素的吸收和利用。结果证明:麦秆还田有机肥当季能吸收18.3％,与适量化肥结合施肥利用率可提高到21.9％,并具有增产效果,是今后作物稳产高产和培肥土壤的一项重要措施。By using stable isotope ^(15)N-labelling technique, we studied uptake and utilization of organic nitrogen in rice from wheat straw. The result showed that the wheat straw as organic manure could be absorbed at 18.3% and when combined with suitable amount of chemical fertilizer, its utilization ratio could be raised to 21.9% and had an effect of increasing yield. So this is an important measure for obtaining stable and high yield and enriching soil from now on.

关 键 词：水稻 麦秆还田 有机氮素 增产机理 

分 类 号：S511.106[农业科学—作物学]