ISAREG is an irrigation scheduling simulation model based on the concept of crop water requirements and soilwaterbalance.
从作物需水量的基本概念出发，以水量平衡原理为基础，建立了模拟农田根层土壤水循环的计算机模型- IS AREG。
2
Based on the principle of soilwaterbalance, including precipitation, temperature and other observations, this article built a model of soil drought index.
从土壤水分平衡原理出发，以降水量、温度和区域水文观测等因子为基础，建立了土壤干旱指数模型。
3
The simulating models about the change of soilwater content under plastic mulch were established by analysing the changes of soilwaterbalance after mulching.