论文部分内容阅读
来安县东寺港水库是座小(一)型水库,来水面积12平方公里,养鱼水面600亩,平均水深4.5米。周围植被良好,阔叶林的覆盖率约占65%,库内水质肥沃,没有污染,为鱼类生长繁衍提供了理想的生态环境,但过去由于“粗放粗养”,忽视科学养鱼,产量一直不高,1983—1986年,共投放鱼种8150公斤,捕鱼4.68万公斤,4年平均亩产19.5公斤,放养效益1:5.7。其中1986年捕鱼1.9万公斤,亩产31.6公斤,算是最好的水平。
Dong’an Port Reservoir in Laian County is a small (a) type reservoir with an area of 12 km 2 and a surface area of 600 mu for aquaculture with an average depth of 4.5 meters. Surrounding vegetation is good, the coverage rate of broadleaf forest accounts for about 65%, the water quality in the reservoir is fertile and no pollution, which provides an ideal ecological environment for the growth and reproduction of fish. However, in the past due to “crude extensive farming” and ignoring scientific fish farming, Has been not high, 1983-1986, a total of 8150 kilograms of fish species, fishing 46,800 kilograms, 4 years average yield 19.5 kilograms, stocking benefit 1: 5.7. Among them, 19,000 kilograms were caught in 1986, and 31.6 kilograms per mu were considered the best.