五幼体培育１．幼体培育池的建造。幼体培育池一般是砖石结构，水泥批档，底铺白瓷砖，长方形，底部倾斜５％～６％，浅水端设进水管，深水端设出水口，并设置充气、加温、控温设施。培育池规模大小可因地制宜，一般面积为４～６米２，高７０～７５厘米，注入水深６５～７  five   juvenile breeding 1. Construction of larval nursery ponds. The larval culture ponds are generally masonry structures, cement batch files, white tiles at the bottom, rectangular, bottom 5% to 6% tilt, shallow water end inlet, water end set outlet, and set inflatable, heating, temperature control facilities . Nurturing pool size can be adapted to local conditions, the general area of ​​4 to 6 m 2, 70 to 75 cm high, water depth of 65 to 7