黑龙江省作物生长季农田土壤水分分区研究

The study on the zoning of soil moisture of farmland in crop growing season in Heilongjiang Province

依据对农田土壤水分状况的表征程度 ,确定了包括土壤水分常数、土壤蓄水量以及土壤蓄水量盈亏值三类共计 9个指标 ,对黑龙江省农田土壤水分盈亏状况进行了较为客观的分区。分区结果表明 ,整个生长季全省呈现西亏东盈中部正常的特点 ,且依不同生长季时段和土层厚度有较大差异 ,为指导黑龙江省农业生产提供重要依据。

Based on the indexes including soil moisture constant,soil water storage capacity and soil water storage capacity surplus-deficit status defined by its attribute extent of farmland soil moisture,the objective zoning of surplus-deficit status of farmland soil moisture of Heilongjiang Province was created.The results indicated that the pattern of farmland soil moisture of provincial area in crop growing season was deficit in the west,surplus in the east and normal in the middle.Moreover,the status of farmland soil moisture varied with the thickness of soil layer and period of crop growth season.The important basis was provided to guide the agricultural production by the results.