Interactions of Water Management and Nitrogen Fertilizer on Nitrogen Absorption and Utilization in Rice

查看全文 作　　者：WANG Shao-hua, CAO Wei-xing, DING Yan-feng, TIAN Yong-chao and JIANG Dong (Key Laboratory of Crop Growth Regulation, Ministry of Agriculture / Nanjing Agricultural University, Nanjing 210095, P.R.China)

出　　处：《Agricultural Sciences in China》索引2003年第2卷第10期,共6页

基　　金：supported by the National Natural Science Foundation of China(30030090); Jiangsu Key Project of Science and Technology(BE2001331). 摘　　要：The interactions of water management and nitrogen fertilizer on nitrogen absorption and utilization were studied in rice with Wuxiangjing9 (japonica). The results showed that the nitrogen uptake and remaining in straw increased and the percentage of nitrogen translocation (PNT) from vegetative organs, nitrogen dry matter production efficiency (NDMPE) and nitrogen grain production efficiency (NGPE) decreased with nitrogen increasing. The nitrogen uptake and NGPE decreased when severe water stressed. However, rice not only decreased the nitrogen uptake but also increased the PNT from vegetative organs, NDMPE and NGPE when mild water stressed. There were obvious interactions between nitrogen fertilizer and water management, such as with water stress increasing the effect of nitrogen on increasing nitrogen uptake was reduced and that on decreasing NDMPE was intensified. 关键词：水稻土壤水分管理氮肥氮素吸收肥料利用效率交互作用

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Interactions of Water Management and Nitrogen Fertilizer on Nitrogen Absorption and Utilization in Rice

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耦合文献(706)

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