平衡估算法
平衡估算法-
目前研究稻田氮素淋溶的方法主要有模拟土柱法、田间实测法、平衡估算法以及数学模型法。
The current research methods of nitrogen leaching in paddy field mainly are modeling soil column , on-site measurement in field , N-budget estimation and mathematical modeling method . And each of them has its advantages and disadvantages .
-
以流域为研究单元，采用水量平衡与估算法相结合的潜在蒸散修正模型，定量分析了绕阳河上游流域不同水平年水量平衡的月值和年值。
Taken the watershed in the upper reaches of Raoyang River as a study area , the annual water equilibrium was calculated by using a modified model of stand evapotranspiration , which was a combined method of water equilibrium and estimation .