论文部分内容阅读
本文根据中国科学院禹城综合试验站1986年~1996年蒸渗仪农田水分模拟试验资料统计:冬小麦全生育期耗水量可达482.5mm,缺水率可达69.3%;冬小麦全生育期水分耗散过程有两个明显的需水峰区和3个关键需水期,为实施节水灌溉提供了实验依据;冬小麦耗水量与环境因子(诸如净辐射、土壤热通量、红外冠层温度、水面蒸发量和生长期等)有明显的相关关系,其统计规律可供地下水浅埋区区域灌溉预测参照应用。
According to the experimental data of evapotranspiration farmland moisture from 1986 to 1996, Yucheng Comprehensive Experimental Station of Chinese Academy of Sciences statistics show that the water consumption of winter wheat reaches 482.5mm during the whole growth period, and the water deficit rate can reach 69.3%. During the whole growth period of winter wheat, Water dissipation process has two distinct water peak areas and three key water-cut periods, which provide the experimental basis for implementing water-saving irrigation. The water consumption of winter wheat and environmental factors (such as net radiation, soil heat flux, infrared canopy Temperature, water surface evaporation and growth period, etc.). The statistical rules are applicable to the prediction of the irrigation in the shallow groundwater area.