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利用土壤水动力学模型预测麦田土壤水分的研究

作  者:
周良臣
单  位:
北京水利水电技术中心
关键词:
土壤水分;冬小麦;根系吸水速率
摘  要:
通过有限差分法,用田间实测土壤水分动态资料反求冬小麦根系吸水速率,建立了由土壤水分动态资料反求的冬小麦一维根系吸水模型,同时根据实测冬小麦根长密度资料,建立了改进Feddes模型形式的冬小麦一维根系吸水模型。模拟结果表明,两模型基本能够正确反映冬小麦根系吸水的实际状况,满足生产要求。
译  名:
Study on Estimation of Soil-water Content by Using Soil-Water Dynamics Model
作  者:
ZHOU Liang-chen(Beijing Water Technology Center,Beijing,100073)
关键词:
soil moisture;winter wheat;dynamic model
摘  要:
Through finite difference method,this paper used field-measured dynamic data of soil water to simulate root-water-uptake-rate of winter wheat inversely,and a 1D root-water-uptake inverse model of winter wheat was set up.At the same time,based on the field-measured date of root-length-density,mended Feddes 1D root-water-uptake model of winter wheat was set up,too.The simulation results showed that both the two models could reflect the actual situation of root-water-uptake of winter wheat,and could meet the need of production.

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