非充分灌溉预报决策支持系统的研究

采用FAO-56 Penman-Monteith公式和双作物系数法计算出作物需水量,根据初始土壤含水率和作物生长发育的长度，通过农田土壤水量平衡原理计算出当前的土壤含水率，依此作为判断灌水与否以及预报灌水日期的依据。当土壤含水率下降到土壤水分下限值时就灌水，计算并输出灌水量，当其未达土壤水分下限值时,则预报需要灌水的日...

Decision Support System of Deficit Irrigation Forecasting

Crop water requirements were calculated by FAO-56 Penman-Monteith equation and dual crop coefficient method.Current soil moisture content was estimated by the principle of field soil water balance according to the initial soil moisture and the growth stage and development length of crops,and then the decision on whether irrigation was applied,as well as the date of irrigation forecasting was made.When the soil moisture content was down to the set soil water lower limit,the irrigation volume was calculated and output.Otherwise,the date of next irrigation was forecasted.What's more,a visual program interface for this irrigation forecasting system was built.When the relevant data were input in different regions,irrigation regime could be forecasted.