1.田间地面灌水技术 改土渠为防渗渠输水灌溉,可节水20％左右。推广宽畦改窄畦,长畦改短畦,长沟改短沟,控制田间灌水量,是节水灌溉的有效措施。 2.管灌 即管道输水灌溉,是把低压管道埋设在地下或铺设在地面,将灌溉水直接输送到田间。常用的输水管多为硬塑管或软塑管。该技术具有投 1 field ground irrigation technology to change the canal for seepage canal irrigation, saving about 20%. The promotion of wide 畦 narrow 畦, long 畦 to short 畦, long ditch to change ditches, control of field irrigation, water-saving irrigation is an effective measure. 2. Pipe irrigation is pipeline irrigation, which is buried in low-pressure pipe or laying on the ground, the irrigation water directly to the field. Commonly used pipes are mostly hard plastic pipe or soft plastic pipe. The technology has cast