| 灌水定额对玉米膜孔灌土壤水氮运移特性影响试验研究 |
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| 引用本文： | 曹俊,费良军,脱云飞.灌水定额对玉米膜孔灌土壤水氮运移特性影响试验研究[J].地下水,2009,31(4):99-102. |
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| 作者姓名： | 曹俊 费良军 脱云飞 |
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| 作者单位： | 西安理工大学水资源研究所,陕西,西安,710048 |
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| 基金项目： | 国家自然科学基金，陕西省重点实验室科研项目 |
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| 摘 要： | 通过玉米膜孔灌测坑试验,分析了灌水定额条件下的膜孔灌农田土壤垂直剖面水氮分布规律。经研究表明：灌水定额越大,土壤含水量越大,分布范围越广,土壤80~100 cm层的含水量越高;灌水定额越大,土壤表层（0~20.0 cm）含水量变化越大,硝态氮含量越小,变化越大,对深层80~100 cm硝态氮含量影响越大;随灌水定额的增加,硝态氮累积峰越靠下,低、中、高灌水定额的硝态氮累积峰分别出现在30 cm4、0 cm5、0 cm左右,高灌水定额时,增加了硝态氮的淋失,不利于作物对水氮的吸收。
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| 关 键 词： | 玉米 膜孔灌 灌水定额 硝态氮 |
Experimental Study on Soil Water and Nitrogen Transformation Characteristics under different irrigation quota |
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| CAO Jun,FEI Liang-jun,TUO Yun-fei.Experimental Study on Soil Water and Nitrogen Transformation Characteristics under different irrigation quota[J].Groundwater,2009,31(4):99-102. |
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| Authors: | CAO Jun FEI Liang-jun TUO Yun-fei |
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| Institution: | Institute of water Resources of Xi'an University of Technology;Xi'an 710048;Shaanxi |
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| Abstract: | By the outdoor field experiment,this article compared and analyzed the influences of different irrigation water amount to nitrate nitrogen leaching.The result showed that the greater the water volume,the greater the soil moisture content and the broader the scope of distribution.,and the greater the volume of irrigation,the great soil surface(0 ~ 20.0cm) moisture content and the nitrate nitrogen content changes;With increased irrigation,nitrate accumulation under the peak by more,nitrate nitrogen accumulati... |
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| Keywords: | Corn film hole irrigation irrigation quota and NO3- -N |
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