修正灌水率图的新方法

提出以日均离差极小化作为灌水率图修正的优化准则，建立了灌区灌水率图修正的数学模型，分析了在上求解这一数学模型的基本方法，编制了灌水率图的修正程序，可根据事先输入的各种作物各次灌水所允许的前、后移动天数，各次灌水允许的延续时间加长天数等，在满足最大灌水率持续时间、允许的最小和最大灌水率的最小比值以及允许的最小停水间隔天数等要求的条件下，自动完成灌水率图的修正。

Study on the Method of Revising Irrigation Hydromodule Dia-gram with Computer Technique

n this paper a mathematical model of revising irrigation hydromodule diagram has been put forward,the method to solve the model with computer technique has been analysed.According to the technique the revision of irrigation hydromodule diagram can be completed automatically by the inputted data which include permissible maximum days moved back or forth of irrigating date and permissible maximum lasting days of each irrigation of deferent growth stages and various crops,permissible minimum lasting days of maximum accumulative value of hydromodule,the permissible minimum ratio of minimum to maximum accumulative value of hydromodule,and permissible minimum interruption days when there is no irrigation.