| 包膜尿素对甜瓜产量、氮素吸收和氮肥利用率的影响 |
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| 引用本文： | 许俊香,徐秋明,倪小会,曹兵.包膜尿素对甜瓜产量、氮素吸收和氮肥利用率的影响[J].华北农学报,2009,24(3). |
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| 作者姓名： | 许俊香 徐秋明 倪小会 曹兵 |
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| 作者单位： | 北京市农林科学院植物营养与资源研究所,北京,100097 |
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| 基金项目： | 北京市科技新星资助项目，北京市科技计划项目 |
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| 摘 要： | 采用基质盆栽试验研究了包膜尿素与普通尿素对甜瓜产量、氮素吸收和氮肥利用率的影响.包膜尿素-次性接触施肥于幼苗根部.结果表明:包膜尿素处理的甜瓜产量显著(P<0.01)高于常规施氮处理,增产19.2%-19-4%;相比常规施氮,施用包膜尿素显著降低了果实硝酸盐含量(P<0.05);常规施氮处理的植株叶片叶绿素含量在追肥前后出现较大波动.而包膜尿素处理在甜瓜生长期间均比较稳定;甜瓜植株氮素吸收曲线与包膜尿素氮素释放规律吻合;施用包膜尿素较常规施氮提高氮肥利用率1.1～20.6个百分点.综上所述,施用包膜尿素能实现增产、提高氮肥利用率以及改善品质的目的,是一种有应用前景的新型肥料.
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| 关 键 词： | 甜瓜 包膜尿素 产量 品质 |
Effect of Controlled-release Urea on Melon Yield,N Uptake and N Use Efficiency |
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| XU Jun-xiang,XU Qiu-ming,NI Xiao-hui,CAO Bing.Effect of Controlled-release Urea on Melon Yield,N Uptake and N Use Efficiency[J].Acta Agriculturae Boreali-Sinica,2009,24(3). |
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| Authors: | XU Jun-xiang XU Qiu-ming NI Xiao-hui CAO Bing |
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| Institution: | Institute of Plant Nutrition and Resources;Beijing Academy of Agriculture and Forestry Sciences;Beijing 100097;China |
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| Abstract: | A pot experiment was conducted in order to investigate the effects of common urea and controlled-release urea under different conditions(with different dose and applied methods) on yields,quality,nitrogen uptake and N use efficiency of melon.Controlled-release urea(including 80% S and 20% L) was applied in touching placement way with by single basal application.The results showed that controlled-release urea can increase fruit yield,improve quality,heighten N use efficiency.Compared to common urea,applying ... |
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| Keywords: | Melon Controlled-release urea Yield N uptake N use efficiency |
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