| 半干旱地区土壤水分和养分对玉米生长和产量的耦合影响 |
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| 作者姓名： | SUN Zhan-Xiang ZHENG Jia-Ming SUN Wen-Tao |
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| 作者单位： | Liaoning Academy of Agricultural Sciences, Shenyang 110161 （China） |
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| 基金项目： | *1supported by the National High Technology Research and Development Program (863 Program) of China(No.2002AA2Z4321-02). |
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| 摘 要： | Interaction between soil water and nutrients plays an important role in sustainable crop management in semi-arid environments.On the basis of a field experiment conducted from 2000 to 2003,this study examined the coupled effects of irrigation and fertilizers on maize growth and yield in a semi-arid region of northeastern China.In terms of plant productivity,nitrogen fertilizer had the most significant effect followed by irrigation and phosphate levels.The combined application of nutrients and irrigation exerted a synergistic effect on the grain yield of maize plants.Regression analysis indicated that optimal levels of nitrogen and phosphate,in addition to adequate irrigation,could greatly improve the efficiency of grain production.Similarly,optimization of soil nutrient availability substantially increased water use efficiency.These suggested that for the most efficient and sustainable crop production,irrigation and nutrient management should be based on a quantitative understanding of water/nutrients interaction,particularly in semi-arid and arid regions.
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| 关 键 词： | 植物营养素 土壤水分 玉米产量 玉米生长 生长发育 半干旱地区 旱区 田间小区试验 |
| 收稿时间： | 9 December 2008 |
Coupled effects of soil water and nutrients on growth and yields of maize plants in a semi-arid region |
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| SUN Zhan-Xiang,ZHENG Jia-Ming,SUN Wen-Tao.Coupled effects of soil water and nutrients on growth and yields of maize plants in a semi-arid region[J].Pedosphere,2009,19(5):673-680. |
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| Authors: | SUN Zhan-Xiang ZHENG Jia-Ming and SUN Wen-Tao |
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| Institution: | aLiaoning Academy of Agricultural Sciences, Shenyang 110161 (China) |
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| Abstract: | Interaction between soil water and nutrients plays an important role in sustainable crop management in semi-arid environments. On the basis of a field experiment conducted from 2000 to 2003, this study examined the coupled effects of irrigation and fertilizers on maize growth and yield in a semi-arid region of northeastern China. In terms of plant productivity, nitrogen fertilizer had the most significant effect followed by irrigation and phosphate levels. The combined application of nutrients and irrigation exerted a synergistic effect on the grain yield of maize plants. Regression analysis indicated that optimal levels of nitrogen and phosphate, in addition to adequate irrigation, could greatly improve the efficiency of grain production. Similarly, optimization of soil nutrient availability substantially increased water use efficiency. These suggested that for the most efficient and sustainable crop production, irrigation and nutrient management should be based on a quantitative understanding of water/nutrients interaction, particularly in semi-arid and arid regions. |
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| Keywords: | crop irrigation nitrogen phosphorus |
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