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根据不同作物不同发育阶段的需水特性，建立了作物蒸腾耗水模型。利用水分平衡方程，根据降水量及前期土壤水分储存量与作物蒸散耗水（包括蒸腾和土壤蒸发）量的差，确定作物不同生育期水分满足程度的时间变化曲线，用以衡量水分的满足程度。并根据水分供应曲线，用聚类分析法将黑龙江省分为不同类型的干湿区。关键词旱涝区划，蒸腾耗水模型，水分供应系数，生育期，聚类分析法
According to the water requirement characteristics of different crops at different developmental stages, a model of crop water consumption and transpiration was established. According to the water balance equation, the time curve of water satisfaction at different growth stages of crops is determined according to the difference between the amount of precipitation, the amount of soil moisture stored in the previous stage and the amount of water consumed by evapotranspiration (including transpiration and soil evaporation) to measure the degree of water content . According to the water supply curve, Heilongjiang Province is divided into different types of wet and dry areas by cluster analysis. Key words droughts and flood zones, transpiration water consumption model, water supply coefficient, growth period, cluster analysis