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(一)池塘的准备和清整1.池塘的修整。池塘用加厚塑料薄膜在边埂内侧围栏,离开水面2米,外高0.7米,薄膜埋入土内0.1米,高出土面0.6米,四周呈圆弧形,上置倒檐约15厘米伸向池内。池底四周挖宽、深均为0.3～0.5米的围沟,池中纵横2～3条宽度不一的沟.
(A) pond preparation and cleaning 1. Pond trimming. Pond with thickened plastic film in the border inside the fence, 2 meters away from the water, 0.7 meters high outside, the film buried in the soil 0.1 meters, 0.6 meters above the earth, surrounded by a circular arc, on the inverted eaves about 15 cm stretch Inside the pool. Dig around the bottom of the pool wide, deep are 0.3 ~ 0.5 meters of the ditch, pool width of 2 to 3 different width of the ditch.