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| 施氮对土壤水分亏缺下冬小麦生产力的影响 | |
| 引用本文： | 刘万代,王化岑,杨青华,赵秀琴.施氮对土壤水分亏缺下冬小麦生产力的影响[J].土壤通报,2000,31(6):262-264. |
| 作者姓名： | 刘万代 王化岑 杨青华 赵秀琴 |
| 作者单位： | 1. 国家小麦工程技术研究中心,河南郑州,450002 2. 河南农业大学,河南郑州,450002 3. 平顶山市农业干部学校,河南平顶山,467000 |
| 摘 要： | 采用盆栽方法研究了不同土壤水分下施N量对小麦生产力的影响 .结果表明 :在适宜土壤含水量下 ,适当增施N肥 ,土壤水分利用率提高 ,植株吸N量和小麦产量增加 ;施N量过大 ,N利用不经济 .不同土壤含水量对应的适宜施N量不同 .水分适宜的土壤对应的适宜施N量高于水分亏缺的 |
| 关 键 词： | 水分亏缺 施N水平 N利用率 籽粒产量 |
| 文章编号： | 0564-3945(2000)06-0262-03 |
| 修稿时间： | 1999年6月9日 |
Influence of N fertilizer on winter wheat productivity under soil water stress |
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| Abstract: | The influence of N fertilizer amounts on wheat production under different soil water contents was studied by using pot experiments. We found that the rate of soil water use increased and consequently more N was taken up by the plant and higher yields were obtained, when soil water contents were in a proper regime. However, if N fertilizer was over used , the application of N fertilizer was not economic. The N requirement was different, when soil water contents differed.ofNf |
| Keywords: | Water deficit N level Efficiency of N fertilizer Yiel? |
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