| 不同灌溉水平对冬小麦耗水构成及利用效率的影响 |
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| 引用本文： | 孔箐锌,张海林,宋振伟,陈阜.不同灌溉水平对冬小麦耗水构成及利用效率的影响[J].干旱地区农业研究,2009,27(4):37-41. |
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| 作者姓名： | 孔箐锌 张海林 宋振伟 陈阜 |
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| 作者单位： | 中国农业大学农学与生物技术学院/农业部作物栽培与耕作学重点实验室,北京,100193 |
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| 基金项目： | 引进国际先进农业科学技术计划(948计划)，公益性行业(农业)科研专项基金，北京都市农业学科群建设项目 |
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| 摘 要： | 以北京地区为典型区域,设计5种不同灌溉处理,即按照生育时期分别进行无灌溉、灌1水、灌2水、灌3水及灌4水处理,利用中子仪和水分平衡法测定冬小麦耗水量,分析全生育期和关键时期的耗水特征.结果表明:冬小麦全生育期耗水量随灌溉次数增加呈增大趋势 ,拔节～抽穗期的耗水量最大,耗水量最少时期为苗期;随着灌溉次数的增加,土壤水消耗量逐渐减少;降水、灌溉和土壤供水是冬小麦耗水的主要来源,降水较少年份土壤供水和降水在耗水构成中所占比例较大,而降水较多年份冬小麦耗水的主要来源为降水;随着灌溉量的增加,灌溉逐渐成为冬小麦耗水构成的主要部分;产量随着耗水量增加渐次增加,水分利用效率和灌溉水利用效率则呈降低趋势.
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| 关 键 词： | 冬小麦 耗水构成 土壤水 水分利用 |
Effect of irrigation on water consumption composition and use efficiency of winter wheat |
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| KONG Qingxin,ZHANG Hailin,SONG Zhenwei,CHEN Fu.Effect of irrigation on water consumption composition and use efficiency of winter wheat[J].Agricultural Research in the Arid Areas,2009,27(4):37-41. |
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| Authors: | KONG Qingxin ZHANG Hailin SONG Zhenwei CHEN Fu |
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| Institution: | KONG Qing-xin,ZHANG Hai-lin,SONG Zhen-wei,CHEN Fu(College of Agronomy and Biotechnology,China Agricultural University,Key Laboratory of Crop Cultivation and Farming System,Ministry of Agriculture,Beijing 100193,China) |
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| Abstract: | Quantitative analysis was made of the situation of soil water use,water consumption composition during its growth seasons and key stages as well as water use efficiency(WUE) under different irrigation levels in different rainfall years.Taking Beijing as the typical region,five different irrigation treatments were designed(non-irrigation,irrigation 50 mm,irrigation 100 mm,irrigation 150 mm and irrigation 200 mm) according to the growth periods of winter wheat,water consumption was determined with neutron pro... |
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| Keywords: | winter wheat water consumption composition soil wat er water use |
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