一、节水灌溉技术(一)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。在习惯大水漫灌或大畦大沟灌溉的地方,推广宽畦改窄畦,长畦改短畦,长沟改短沟,控制田间灌水量。(二)管灌。利用低压管道,埋设地下或铺设地面,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。该技术具有投资少节水、省工、节地和节省能耗等 First, water-saving irrigation technology (A) field ground irrigation technology. Drainage canal for the impermeable canal water diversion irrigation, saving about 20%. Where flood irrigation or large ditch irrigation is used, populace should be widened to narrow the gap, long 畦 to short 畦, long ditch to shorten the ditch to control field irrigation. (B) pipe irrigation. The use of low-pressure pipe, buried underground or laying the ground, the irrigation water directly to the field, most of the commonly used pipes are hard plastic pipe or soft plastic pipe. The technology has the advantages of less investment in water saving, labor saving, land saving and energy saving