湖南省桃源县王家湾(中型)水库管理所,采用交流电栅拦鱼,在水库溢洪时,杜绝了逃鱼现象。这座水库有养鱼水面1153亩,饲养条件很好,但每年溢洪时,鱼群大量外逃。据测定,从1958年至1980年的22年中,每年平均溢洪10次。每次外逃成鱼三、四千斤,年平均捕捞鲜鱼只有一万多斤,形成增产不增收的被动局面。 Wangjiawan (medium-sized) reservoir management office in Taoyuan County, Hunan Province, uses AC electric grids to stop fish. When the reservoir overflows, the phenomenon of escape of fish is eliminated. The reservoir has 1153 acres of fish water surface, raising conditions are good, but each year overflow, fish mass flight. It has been determined that during the 22 years from 1958 to 1980, the average annual spill was 10 times. Each flight into a fish three or four pounds, the average annual catch of fresh fish only 10,000 kilos, forming a passive situation of increasing production does not increase revenue.