池塘河蟹青虾套养模式下底部微孔增氧的技术

Technology and Benefit analysis of micropore aeration for mixed culture of mitten crab(Eriocheir sinensis) and freshwater shrimp(Macrobranchium nipponense) in pond

池塘内养殖河蟹时套养两茬青虾,并对试验组池塘底部进行微孔增氧。试验组虾蟹合计平均产量1645.20kg/hm^2,利润83577.9元/hm^2;对照组虾蟹合计平均产量1325.7kg/hm^2,利润44312.55元/hm^2,微孔增氧组利润增加39265.35元/hm^2,增加88.61%。在微孔增氧条件下,水体水质明显改善,提高了商品虾蟹单体规格及产量。

Mitten crab(Eriocheir sinensis) and freshwater shrimp(Macrobranchium nipponense) were cultured in ponds, and micropore aeration were used in pond bottoms for the experimental group. For the experimental group, the average yield of crab and shrimp was 1645.20 kg/hm^2 and the profit was 83577.9 RMB/hm^2. For the control group, the average yield was 1325.7 kg/hm^2 and the profit was 44312.55 RMB/hm^2. Compared with the control group, the profit of experimental group increased by 39265.35 RMB/hm^2(increased by 88.61%). The increasing profits came from the increasing of individual size and average yield, and better body color and other sensory qualities. The shrimp-crab polyculture improved the comprehensive culture benefits obviously and healthy development of the crab culture.