一、水域条件水域要求湖底平坦,有微水流,沉水植物茂盛,底栖动物丰富,水质清新,环境安定,正常水位在80～150厘米之间。二、网围设施的建设与规模网围设置分二种类型:①如设置在成蟹网围内的,为单层网结构;②单独设置的,则为双层网结构。换行网片采用网目为0.3厘米的无结网。网 First, the water conditions The lake requires a flat lake, a micro-flow, submerged macrophylla, abundant zoobenthos, fresh water, the environment is stable, the normal water level between 80 to 150 cm. Second, the construction of network facilities and scale Wai Wai set up two types of network settings: ① If set in the encircled crab, single-layer network structure; ② set separately, then the double-layer network structure. Line feed mesh with a mesh of 0.3 cm without net. network