| 不同量的包膜控释尿素与普通尿素配施在夏玉米上的应用研究 |
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| 引用本文： | 衣文平,朱国梁,武良,谷佳林,李亚星,许俊香,史桂芳,徐秋明.不同量的包膜控释尿素与普通尿素配施在夏玉米上的应用研究[J].植物营养与肥料学报,2010,16(6):1497-1502. |
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| 作者姓名： | 衣文平 朱国梁 武良 谷佳林 李亚星 许俊香 史桂芳 徐秋明 |
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| 作者单位： | 1.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： | 北京市科委项目，国家科技支撑项目 |
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| 摘 要： | 通过田间试验，研究了释放期为60 d的包膜控释尿素（PCU60）不同用量与普通尿素（U）配合基施对夏玉米产量、氮肥利用率、氮素积累量及经济效益的影响; 并比较PCU60氮素在田间及25℃静水的溶出特征。结果表明: 在施氮量相等的条件下，不同用量PCU60与普通尿素配合基施与习惯施肥相比夏玉米产量显著提高，氮素总积累量、子粒氮素积累量明显增加，氮肥利用率提高5.86%11.39%，净收入增加1303.21715.2 Yuan/hm2; 其中以PCU60氮素占总施氮量30%的经济效益最高。PCU60在田间与在25℃静水中的氮素溶出特征吻合较好; 与普通氮素配合基施氮素释放符合夏玉米的吸氮规律。
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| 关 键 词： | 夏玉米 包膜控释尿素 氮素利用率 产量 经济效益 |
| 收稿时间： | 2010-02-03 |
Application of different release duration controlled-release coated urea combined with conventional urea on summer maize |
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| YI Wen-ping,ZHU Guo-liang,WU Liang,GU Jia-lin,LI Ya-xing,XU Jun-xiang,SHI Gui-fang,XU Qiu-ming.Application of different release duration controlled-release coated urea combined with conventional urea on summer maize[J].Plant Nutrition and Fertilizer Science,2010,16(6):1497-1502. |
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| Authors: | YI Wen-ping ZHU Guo-liang WU Liang GU Jia-lin LI Ya-xing XU Jun-xiang SHI Gui-fang XU Qiu-ming |
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| Institution: | 1.Institute of Plant Nutrition and Resource,Beijing Academy of Agriculture and Forestry Sciences,Beijing 100097,China; |
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| Abstract: | Field experiments were performed to study the effects of different amount controlled-release coated urea of 60 d release duration combined with conventional urea used as basal on grain yield of summer maize, nitrogen utilization efficiency, nitrogen accumulation, and economic benefit. Comparative analysis of nitrogen release characteristics under field and 25℃ static water conditions was carried as well. The results show that when the same dosage nitrogen is applied, the summer maize yields are increased under different amounts of controlled-release coated urea of 60 d release duration combined with conventional urea used as basal. Total nitrogen accumulation and maize kernel nitrogen accumulation are obviously higher than those of the traditional nitrogen application treatment. Compared to the traditional nitrogen application treatment, nitrogen utilization efficiencies are increased by 5.86%-11.39%. The net incomes are increased by 1303.2-1715.2 yuan/ha. The net income in the controlled-release coated urea of 60 d release duration combined with conventional urea is the highest. Nitrogen release characteristics under field and 25℃ static water conditions of controlled-release coated urea of 60 d release duration are similar. The controlled-release coated urea of 60 d release duration combined with conventional urea as basal accords with nitrogen absorption rule of summer maize. |
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| Keywords: | summer maize controlled-release coated urea nitrogen utilization efficiency yield economic benefit |
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