irrigation water requirement

基本解釋

The irrigation water requirement is mainly focused on full irrigation .
本論文主要進行充分灌溉條件下農(nóng)業(yè)灌溉需水量的計算。
Based on the data collected in this study, net irrigation water requirement of main crop in china has been gotten.
根據(jù)收集到的資料，計算得出全國主要作物的凈灌溉需水量。
Rainfall frequency analysis is used commonly to determine probability of irrigation water requirement, and to choose typical years for irrigation project design.
灌區(qū)灌溉設(shè)計中，常用降雨量進行頻率分析來選取灌溉設(shè)計保證率及其對應(yīng)典型年。

灌溉需水量
On the condition of total sown area being fixed, reducing the percentage of cereal crop and increasing cash and other crops both can significantly reduce agricultural water consumption and net irrigation water requirement per unit area.
在農(nóng)作物總播種面積一定條件下,降低糧食作物比例、增大經(jīng)濟作物與其它農(nóng)作物比例均能顯著降低流域單位面積農(nóng)業(yè)耗水量及單位面積農(nóng)業(yè)凈灌溉需水量。
灌溉用水
The main purpose of this paper is to analyze the features of irigation water process and put forward a decomposed model for the long term forecasting of regional irrigation water requirement,which is based on time series analysis.
本文基于時間序列分析方法，建立了區(qū)域農(nóng)業(yè)灌溉用水量長期預(yù)報分解模型，給出了灰色GM（1，1）趨勢預(yù)測、方差周期分析以及ARMA（2n，2n-1）隨機分析相結(jié)合的模型求解方法，并編制了相應(yīng)模型軟件支持系統(tǒng)。