范屯水库是一座以灌溉和养鱼为主的小型水库,设计库容956万立方米,养鱼水面800亩。水库在正常年景鱼产量为3万斤,亩产37.5斤,1979年以来,产量逐年下降。现就范屯水库鱼产量变动原因作一分析,并对今后的工作提出一些看法。一、历年鱼种放养和成鱼捕捞情况 Fan Tuen Reservoir is a small-scale irrigation and fish-based reservoirs with a designed storage capacity of 9.56 million cubic meters and 800 acres of aquatic fish. In normal years, the production of fish in the reservoir is 30,000 kg, 37.5 kg per mu. Since 1979, the output has been decreasing year by year. An analysis is made on the causes of the fluctuation of the fish yield in Fan Tun Reservoir and some suggestions are put forward for future work. First, species stocking and adult fish fishing over the years