摘要
本试验使用滴头流量2.3升/小时,滴头间距0.5米的以色列滴灌设备,研究了籽瓜在民勤沙区种植的灌溉制度及以传统的沟灌作对照的投入和产出。试验结果:灌溉定额全年为218.8米~3/亩;一次性灌水定额为7.4米~3/亩;滴灌间期是;5月份根据土壤墒情灌足底水,6、7、8月份分别为3.9天、2.2天和4.1天;每次灌溉时间3.6小时;较沟灌节约用水62.8%;节省劳力37.7%;减少投入2.8%,增加产值32.8%。经济效益和节水效益显著。
Using Israeli Drip Irrigation System with the emitter discharge of
2.31/h and 0.5m between two emitters, this experiment deals with the
irrigation scheme for growing seed melon, and compares the input and
output between the drip irrigation and traditional furrow irrigation in
Minqin desert area. The results showing: the annual irrigation norm is
3282m^3/ha with 111m^3/ha per time; irrigated frequency varies from
month to month, during June,July and Augest irrigating respectively once
3.9, 2.2 and 4.1 days, each irrigation lasting 3.6 hours; compared with
furrow irrigation, drip irrigation can save 62.8% of water, 37.7% of
labor, and with the input reduction of 2.8% and output increment of
32.8%. The benefits are considerable both in economy and water saving.
出处
《干旱区资源与环境》
CSCD
1992年第1期95-103,共9页
Journal of Arid Land Resources and Environment
关键词
沙漠
滴灌
沟灌
籽瓜
灌溉制度
Minqin
Drip Irrigation
Furrow Irrigation
seed Melon
