(一)池塘条件养殖池以土池为好,面积为100～3000平方米不等,长宽比约1︰3,东西走向。池深1～1.5米,池底留淤泥20厘米,池壁夯实无渗漏。沿池四周用网目大0.5厘米的网绢围住,网片下埋30厘米至硬底,上端高出水面30厘米,用1.7米以上的毛竹将网绢上下纲绳固定,其下端插入泥中50厘米,上端与池边相距30厘米,使池水具有良好的通透性,有效地防止泥鳅钻泥和敌害生物侵入。池塘的上风口设置直径为 (A) pond conditions Aquaculture pond to soil pool is good, with an area of ​​100 to 3000 square meters, aspect ratio of about 1: 3, east-west. Pool depth of 1 to 1.5 meters, leaving the bottom of the pool of 20 cm pool, pool wall solid no leakage. Around the pool with a mesh 0.5 cm large screen surrounded by silk, buried under the mesh 30 cm to the hard bottom, the top 30 centimeters above the surface of the water, with more than 1.7 meters of bamboo silk screen up and down the rope fixed, the bottom into the mud 50 cm, 30 cm from the top of the pool, the pond has good permeability, effectively prevent loach drilling mud and enemy biological invasion. Pond set on the outlet diameter