| 滴灌条件下土壤平均含水率计算方法研究 |
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| 引用本文： | 申孝军,孙景生,张寄阳,宋妮,刘小飞,杨磊.滴灌条件下土壤平均含水率计算方法研究[J].水土保持学报,2011,25(3):241-244,253. |
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| 作者姓名： | 申孝军 孙景生 张寄阳 宋妮 刘小飞 杨磊 |
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| 作者单位： | 中国农业科学院农田灌溉研究所农业部作物需水与调控重点开放实验室,河南新乡,453003 |
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| 基金项目： | 现代农业棉花产业技术体系建设专项(CARS-18-04B); 国家自然科学基金(510091400) |
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| 摘 要： | 为寻找适合滴灌农田土壤平均含水率的计算方法,在裸地和大田试验研究的基础上选用单点平均、三点平均等5种方法分别计算了滴灌条件下平均土壤含水率,并以积分法为标准,对其他4种方法进行评价。结果表明,3点取样,采用面积加权平均法计算各层土壤的平均含水率,然后在垂直方向上采用积分中值定理求平均值的方法计算结果更接近真实值,误差最小,可利用该方法计算滴灌农田土壤平均含水率。
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| 关 键 词： | 滴灌 土壤含水率 计算方法 |
Study on Calculation Method of Soil Moisture Content under Drip Irrigation |
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| SHEN Xiao-jun,SUN Jing-sheng,ZHANG Ji-yang,SONG Ni,LIU Xiao-fei,YANG Lei.Study on Calculation Method of Soil Moisture Content under Drip Irrigation[J].Journal of Soil and Water Conservation,2011,25(3):241-244,253. |
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| Authors: | SHEN Xiao-jun SUN Jing-sheng ZHANG Ji-yang SONG Ni LIU Xiao-fei YANG Lei |
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| Institution: | SHEN Xiao-jun,SUN Jing-sheng,ZHANG Ji-yang,SONG Ni,LIU Xiao-fei,YANG Lei(Key Lab.for Crop Water Requirement and Regulation,Ministry of Agriculture,Farmland Irrigation Research Institute,Chinese Academy of Agricultural Sciences,Xinxiang,Henan 453003) |
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| Abstract: | It is particularly important to find accurate calculation method of soil moisture content under drip irrigation.Based on the data from experiments of field and bare land,average moisture content of field of drip irrigation under different moisture was estimated with five methods,such as 1 sampling point average and 3 sampling points average etc.Taking method of layered integration as the standard,the other methods were evaluated.The results showed that the estimated average soil moisture by the F4(three sam... |
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| Keywords: | drip irrigation soil moisture content calculation method |
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