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1 材料与方法1.1 池塘条件:试验池塘4口:包括白鲢1、2号亲鱼池,草鱼1、2号亲鱼池;对照池2口;白鲢3号和草鱼3号亲鱼池。每口池塘面积0.27hm~2,水深2.2m左右,池底淤泥厚10～20cm,注、排水管道配套。水源为陡河水库天然水、水质符合国家饮用水二类标准。1.2 亲鱼放养:白鲢亲鱼池667m~2放养亲鱼46尾,平均体重4.3kg,搭配花鲢亲鱼5尾。草鱼亲鱼池667m~2放养亲鱼32尾,平均体重10.4kg,搭配白鲢亲鱼6尾,花鲢亲鱼1～2
1 Materials and methods 1.1 Pond conditions: Test ponds 4: Including silver carp 1, 2 broodstock, grass carp 1, 2 broodstock pond; control pool 2; silver carp 3 and grass carp 3 broodstock pond. Each pond area of 0.27hm ~ 2, depth of 2.2m, the bottom of the mud thickness of 10 ~ 20cm, note, drainage pipe supporting. Water source for Douhe reservoir natural water, water quality in line with national drinking water standards. 1.2 broodstock stocking: white carp broodstock broodstock 667m ~ 2 stocking broodstock 46, the average weight of 4.3kg, with flower silver carp 5. Grass carp fish pond 667m ~ 2 stocking broodstock 32, average weight 10.4kg, with silver carp 6 fish, silver carp 1 ~ 2