| 摘要: |
| 对西北农林科技大学灌溉试验站2002年夏玉米田根系层土壤水分消耗动态进行了研究，分析了夏玉米生育期农田一维土壤水分动态变化过程及不同灌水处理对不同深度根系层的耗水量和不同时期日耗水强度的影响，确定了不同灌水定额条件下田间灌溉水有效利用率与计划湿润层深度的关系，其相关关系均大于0.96；通过产量分析，确定了夏玉米作物拔节后适宜的土壤含水率为田间持水量的80%。 |
| 关键词: 夏玉米 农田土壤水分动态 土壤水利用率 |
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| 基金项目:国家“863”高技术研究发展计划项目（2002AA2Z4031）；高等学校博士点基金项目（20020712020） |
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| Research about the dynamic changes of soil moisture consumption in the root district of summer maize and the application efficiency of soil water |
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| Abstract: |
| This paper researched the dynamic changes of the soil moisture consumption in the root district of farmland of summer maize in 2002 in irrigation & experimental station of the Northwestern Sci-Tech University of Agriculture and Forestry,analyzed the course of the dynamic change about one-dimensional soil moisture and the influence of different irritation treatments on water consumption in the different root layers and daily water consumption of different periods in root district of breeding time of the summer maize,confirmed the relation between the depth of designed moisting layer and water application efficiency in different quota of irrigation water,its relevant relation greater than 0.96.After analyzing the output,the suitable soil moisture content was confirmed to be 80% of the field capacity after the maize jointing period. |
| Key words: summer maize the dynamic change of farm-land soil moisture soil water application rate |
