江苏省主要作物农田水分盈亏量的研究

ESTIMATION OF FARM WATER BUDGET FOR MAJOR VARIETY OF CROPS IN JIANGSU PROVINCE

利用江苏省１９８０～１９９２年土壤湿度资料，根据土壤水分平衡原理，运用运筹学中的优化技术，结合本省的自然条件和作物生长实际情况，提出有效降水量、下层水分补给量等计算方法，建立了旱地和稻田农田水分盈亏量的计算模式，以便应用实时降水和土壤湿度等资料，计算全省农田水分盈亏量，及时提供农业气象情报服务．

Based on the soil moisture data from 1980 to 1992, according to the principle of soil water balance and the optimization technique in operational research, and considering the special natural conditons and actual state of crop growth in Jiangsu Province, the calculating methods of effective rainfall and the amount of complemental water of low level soil are given, and the calculating models of water budget of dry farmland and rice field are proposed. By using these models and real time rainfall and soil moisture data, the amount of farm water budget can be calculated accurately, so that the effective service to agrometeorological information would be provided.