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喷灌、滴灌不产生地面径流和深层渗漏,不平地面也能适应,灌水比较均匀,有省水增产的优点。灌水定额一般每亩次20立米左右(滴灌用水更少),较畦灌省水约50%。唐山市在沙地和近郊重点抓了喷灌和滴灌试点。全市喷灌机已发展到1464套,控制面积17.4万亩,按每亩次节水20立米计算,灌一次即可节约用水348万立米,能扩浇8万亩地。滴灌试点全省已发展到8处,控制浇地面积1571亩,迁
Sprinkler irrigation, drip irrigation does not produce surface runoff and deep leakage, uneven ground can adapt to irrigation more evenly, the advantages of saving water yield. Irrigation quotas are generally about 20 cubic meters per acre (drip irrigation less water), compared with irrigation water about 50%. Tangshan City in the sand and suburbs focused on sprinkler irrigation and drip irrigation pilot. The city’s irrigation machine has been developed to 1464 sets, control area of 174,000 mu, according to 20 cubic meters per acre saving 20 cubic meters, irrigation can save 3.48 million cubic meters of water, can expand 8 million mu of land. Drip irrigation pilot province has grown to 8, control 1571 acres of irrigated land, move