Effects of integrated fertilizer application on nitrogen use efficiency of spring maize and soil nitrogen content on black soil in Harbin

文献类型： 外文期刊

第一作者： Chen, Xueli

作者： Chen, Xueli;Wang, Yufeng;Zhang, Lei;Chen, Xueli;Han, Xiaozeng;Chen, Xueli;Zhang, Junzheng;Bechmann, Marianne

作者机构：

关键词： fertilizer application;grain harvest index;pollution;soil;surplus

期刊名称：ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE （ 影响因子：1.694； 五年影响因子：1.568 ）

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收录情况： SCI

摘要： With the increase in planting area of spring maize and nitrogen (N) application in Heilongjiang province, the high potential of N pollution to the environment and resource waste should be given urgent attention. In this study, N use efficiency (NUE), grain harvest index and partial factor productivity of nitrogen were calculated to evaluate the balance between N application, grain yield and soil N content based on a 3-year plot experiment with different N application. The results showed that high N application did not result in high NUE, rather it decreased, and that low N application with high NUE led to soil N deficit. Considering N surplus and NUE in spring maize production, the primary conclusion could be drawn that 180 kg N ha(-1) are acceptable both for grain yield and N risk to environment for spring maize in Harbin area

分类号： S

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