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
作者： Chen, Xueli 1 ; Wang, Yufeng 1 ; Zhang, Lei 1 ; Han, Xiaozeng 2 ; Zhang, Junzheng 4 ; Bechmann, Marianne 5 ;
作者机构： 1.Heilongjiang Acad Agr Sci, Inst Soil Fertilizer & Environm Resources, Key Lab Soil Environm & Plant Nutr Heilongjiang P, Fertilizer Engn Technol Res Ctr Heilongjiang Prov, Harbin, Peoples R China
2.Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Black Soil Ecol, Harbin, Peoples R China
3.Univ Chinese Acad Sci, Beijing, Peoples R China
4.Harbin Inst Technol, Sch Food Sci & Engn, Harbin 150006, Peoples R China
5.Norwegian Inst Agr & Environm Res Bioforsk, N-1430 As, Norway
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
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