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Analysis of Long term Fertilization Effect on Yield of Wheat in Dry land on Loess Plateau
Authors
党廷辉
李丽霞
+3 more
王旭刚
郝明德
高长青
Publication date
1 January 2004
Publisher
Abstract
以已进行 1 8年的小麦长期肥料定位试验为背景 ,研究了长期施用化肥条件下小麦的增产效应及其对小麦吸收养分量的影响。结果表明 :单施氮肥对小麦有增产作用 ,可以提高小麦籽粒的含氮量 ;1 8年施用氮肥平均增产 1 0 80 5kg hm2 ,增产率达 85 2 %;单施磷肥无明显的增产作用 ,平均减产率为 3 2 %,但可提高小麦籽粒的含磷量 ;氮磷配施有明显的增产作用 ,N、P配施增产率达 1 4 0 6 %,在N、P配施基础上施用钾肥增产率仅为 2 8%,无明显的经济效益 ,从养分平衡角度应考虑N、P、K的配合施用
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Institute of Soil and Water Conservation,Chinese Academy of Sciences and Ministry of Water Resources
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oai:ir.iswc.ac.cn/:361005/1821
Last time updated on 21/09/2018