THE OPTIMUM STRUCTURE OF FISHERY PRODUCTION AND ANALYSIS OF ITS ECOLOGICAL BENEFIT AT GUAN SHAN VILLAGE IN HILLY AGRICULTURE AREA, TAOYU AN, HUNAN PROVINCE
丘岗农区观山村渔业生产结构优化及生态效益分析

The main problem of realizing the optimum structure of fishery production in hilly agriculture area is to adjust the composition of fish species to be stocked and the fully use of the forage resources to improve the productivity of fishes.In Guan Shan Village, after this optimum structure of fishery is adopted the proportion of phytophagous fish in pond has risen from 3.4% to 40%, the. utilization rate of vegetable stuff from 0.8% up to 5.33%. Under the restriction of the overall optimum model of agriculture at the village, there are 9.93% of whole forage resources which can be used in fishery production. Therefore, a favourable ecological circulating pattern was formed, in which agriculture, animal husbandry and fishery production will be benefited by each other and a harmonious development will be maintained.