我国华北地区水资源紧缺,年降雨量少,且主要集中在夏季。而小麦生长季节多风少雨,耗水量大,高产麦田需水的70~80要依靠灌溉补充,小麦一生中通常要灌水4~6次,总灌水量3000~3750立方米/公顷。由此可见,节水省肥高产栽培技术很关键,具体要实现四大统一,即节 In North China, water resources are scarce with less annual rainfall and mainly concentrated in summer. The wheat growing season windy and drier, water consumption, high-yielding wheat fields need water 70 to 80 to rely on irrigation, wheat irrigation usually 4 to 6 times the total irrigation, the total irrigation amount of 3000 ~ 3750 cubic meters / hectare. Thus, water-saving and fertile high-yielding cultivation techniques are the key to achieve the four major specific unity, that Festival