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自1972年以来,我们对宁阳县机井灌溉增产效益作了调查分析,并和水库、引河灌溉增产情况进行了比较,认为机井灌溉增产效益有五个突出特点。 1.速效性和可靠性。机井建设较之水库、引河等水利工程,具有投资少见效快的优点。井灌区的多数村庄都是当年打井当年增产,甚至当季打井当季也会增产。并且,井灌比引河、水库等地面工程受大气降水影
Since 1972, we have done an investigation and analysis on the yield increase of irrigation in Ningyang County and compared it with that of reservoirs and diversion irrigation. We think that there are five salient features in yield enhancement of irrigation in irrigation wells. 1. Quickness and reliability. Well construction than the reservoir, river and other water conservancy projects, with the advantages of rare and quick investment. Most villages in the well irrigated area are producing more wells in that year, and even the seasonal drilling season will increase production. And, well irrigation than the river, reservoir and other ground projects by the shadow of atmospheric precipitation