近年来,江苏省金湖县充分利用自然资源,大力推广湖泊网围鱼蟹混养技术,取得明显的经济效益,一般亩产鱼50—100kg,产蟹5—10kg,亩纯收入200—400元。现将其技术要点介绍如下: 一、网围区的选择和建设湖泊网围鱼蟹混养的最大特点在于利用湖区丰富的水草和螺蚬贝类资源作为饵料,因而网围区的选择,除了水流比较通畅外,应选择水草、螺蚬贝类资源比较丰盛的地区。网围鱼蟹混养区的建设工艺同网围养鱼一样,用聚乙烯网片,固定在毛竹桩上,采用双层网,内外层网距离5m,在外层网外侧加一排毛竹保护桩。围网下端接石笼,用鹅卵石灌装而成,其踩入泥中10～15cm。与网围养鱼不同的是要增 In recent years, Jinhu County, Jiangsu Province, make full use of natural resources, vigorously promote lakes and fish around the crab polyculture technology, and achieved significant economic benefits, the general mu produce fish 50-100kg, produce crab 5-10kg, mu 200-400 net income yuan. Now the technical points are introduced as follows: First, the choice and construction of net Wai Lake fish around the pond polyculture is characterized by the use of Lake rich aquatic plants and snail shellfish resources as bait, so the choice of net Wai area, in addition to Water flow is relatively smooth, should choose aquatic plants, snail shellfish resources more abundant areas. Net Wai fish crab polyculture area construction process with the net fence fish, with polyethylene mesh, fixed in the bamboo piles, the use of double net, inner and outer net distance 5m, outer layer of net plus a row of bamboo protection pile . Under the net end of the stone cage, filled with cobblestone, which stepped into the mud 10 ~ 15cm. And net Wai fish is to be increased