SHEN Xiao-jun, SUN Jing-sheng, ZHANG Ji-yang, et al. Study on Calculation Method of Soil Moisture Content under Drip Irrigation[J]. 2011, 25(3).DOI:
滴灌条件下土壤平均含水率计算方法研究
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。
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...