野外条件下作物根系吸水模型的建立  

The determination of crop root uptake model for field condition

作　　者：邵爱军[1] 李会昌[1] 

机构地区：[1]武汉水利电力大学水利系

出　　处：《水利学报》1997年第2期68-72,共5页Journal of Hydraulic Engineering

摘　　要：根据带有作物根系吸水项的垂向一维土壤水分运动方程，通过有限差分方法，用野外实测资料计算了作物根系吸水率．根据计算结果，用多元非线性回归的方法。According to the mathematical model of one dimensional soil water flow with crop root uptake term,the rates of the crop root uptake are calculated by using a finite difference method on the basis of the data measured in field.The mathematical model of the crop root uptake is developed with the help of multiple nonlinear regression.

关 键 词：根系 吸水率 作物 野外条件 灌溉 

分 类 号：S311[农业科学—作物栽培与耕作技术]