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In order to reveal whether the Myxocyprinus asiaticus and the mitten crab Eriocheir sinensis be intercropping well in pond-culture and whether have any influence on specification, production and benefit of the river crab, During March to November, 2011. We chose three mitten crab Eriocheir sinensis ponds of similar hydrology condition and environment in Liu farm, Taizhou city, Jiangshu province to start the test of intercropping Myxocyprinus asiaticus in the mitten crab pond. The control pond mainly cultivates Eriocheir sinensis auxiliary with Macrobrachium nipponense, siver carp and Siniperca chautsi, while the testing ponds intercropping Myxocyprinus asiaticus juveniles additional. Stocking density of the 2 nd pond and the 3 rd pond is, respectively 750 and 900 fish/hm 2 with averaging 10 cm in body length. After 250 days' cultivation, the average weight of each one is 997.8 g with survival rate of 91.2%. The average output of the 2 nd pond is 342 kg/hm 2 and the 3 rd pond is 405.75 kg/hm 2 . Compared with the contrast pond's 35,505 yuan/hm 2 net profit, the 2 nd pond and the 3 rd pond separately has 22,995 and 27,032 yuan/hm 2 more net profit with growth rate at 64.77 and 76.14%. The average specification of the Eriocheir sinensis in these three ponds is 169 g/one. Specification of the Eriocheir sinensis in the intercropping pond has no obvious difference with the one in the control pond.

Test of Intercropping <em>Myxocyprinus asiaticus</em> in the <em>Eriocheir sinensis</em> Pond