| 水氮量对小麦/玉米间作土壤硝态氮累积和水氮利用效率的影响 |
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| 引用本文： | 叶优良,李 隆.水氮量对小麦/玉米间作土壤硝态氮累积和水氮利用效率的影响[J].农业工程学报,2009,25(1):33-39. |
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| 作者姓名： | 叶优良 李 隆 |
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| 作者单位： | 1. 河南农业大学资源与环境学院,郑州,450002
2. 植物-土壤相瓦作用教育部重点实验室,农业部植物营养与养分循环重点实验室,中国农业大学资源与环境学院,北京100094 |
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| 基金项目： | 948重大项目（2006-G60） |
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| 摘 要： | 为了提高氮肥和水分利用效率，该文在甘肃河西灌区试验地点，采用田间小区试验，研究了不同氮水平（0、225、450 kg/hm2）和灌水量（750、1125、1500 m 3/hm2）对小麦/玉米间作土壤硝态氮累积和水氮利用效率的影响。结果表明，不同氮肥和灌水量对小麦带土壤硝态氮含量和累积量影响较小，对玉米带影响显著。随氮肥用量增加，玉米带土壤硝态氮含量和累积量增加，随灌水量和氮肥用量增加，0～60 cm土壤硝态氮相对累积量增加，60～140 cm土层降低。氮肥当季利用率、氮肥生产率、氮肥产投比都是以225 kg/hm2氮水平较高，但不同灌水量差别不大。WUE（水分利用效率）以W750N225最高，W1500N0最低，随灌水量增加WUE降低。
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| 关 键 词： | 氮肥 硝态氮 氮素利用效率 水分利用效率 小麦/玉米间作 灌水量 累积 |
| 收稿时间： | 2007/6/11 0:00:00 |
| 修稿时间： | 2008/3/22 0:00:00 |
Effects of nitrogen fertilizer application and irrigation level on soil nitrate nitrogen accumulation and water and nitrogen use efficiency for wheat/maize intercropping |
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| Ye Youliang and Li Long.Effects of nitrogen fertilizer application and irrigation level on soil nitrate nitrogen accumulation and water and nitrogen use efficiency for wheat/maize intercropping[J].Transactions of the Chinese Society of Agricultural Engineering,2009,25(1):33-39. |
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| Authors: | Ye Youliang and Li Long |
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| Institution: | 1.College of Resources and Environment;Henan Agricultural University;Zhengzhou 450002;China;2.Key Laboratory of Plant Nutrition;Ministry of Agriculture;Key Laboratory of Plant and Soil Interactions;Ministry of Education;College of Resources and Environment;China Agricultural University;Beijing 100094;China |
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| Abstract: | In order to improve nitrogen and water use efficiency,effects of nitrogen fertilizer application and irrigation level on soil nitrate nitrogen accumulation and water and nitrogen use efficiency for wheat/maize intercropping were conducted in Hexi corridor of Gansu Province with three nitrogen rates(0,225 and 450 kg/hm 2 )and three irrigation levels(750,1125,1500 m 3 /hm 2 ).The results showed that irrigation level and nitrogen rate affected little on nitrate nitrogen accumulation of wheat strip,yet signific... |
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| Keywords: | nitrogen fertilizers nitrate nitrogen nitrogen use efficiency water use efficiency wheat/maize intercropping irrigation level accumulation |
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