一、注意混养池塘面积。春季鱼类混养池塘要大而深,一般每个池塘面积最好3000m2以上,水深2m以上,才可考虑配套上、中、下层鱼类混养。面积600～1300m2,水深1.5m以下小而浅的池塘和饵料种类比较简单的池塘,以及新开挖的池塘,一般不宜混养。二、注意突出主养鱼类。主养鱼类就是池 First, pay attention to polyculture pond area. Spring fish polyculture ponds should be large and deep, the general area of ​​?? each pond is best 3000m2 more than 2m, before we can consider supporting the middle and lower fish polyculture. Small and shallow ponds with an area of ​​600 ~ 1300m2 and a water depth of 1.5m and ponds with relatively simple bait types and newly excavated ponds are generally not suitable for polyculture. Second, pay attention to highlight the main fish. The main fish is the pool