(2) decision-making of irrigation during growing periodThis system is based on the depth of root system, dry unit weight of soil, upper limit index of irrigation and antecedent soil water to forecast irrigation quota;

• (2)生育期灌溉决策:系统主要依据水稻根系活动层深度、土壤干容重、灌水上限系数和土壤初始含水量来预测灌水定额;