一、掌握适期,彻底清塘鱼种池清溏是否彻底以及清塘时间是否适时,与培育鱼种有着十分重要的关系。如清塘不彻底,野杂鱼类,特别是龙虾,将会大量繁殖,危害鱼苗与蟹苗,若清塘过早或过迟,造成浮游生物过多或过少,也将会直接影响鱼苗的成活率。根据我们的实践,清塘最佳时期应掌握在4 First, master the appropriate time to completely clear the pool Qingchi Qingtong species and whether the time is clear, and cultivation of fish species have a very important relationship. Such as clear pond is not complete, wild trash fish, especially lobster, will be a large number of breeding, endangered fry and crab, if the pond too early or too late, resulting in plankton too much or too little, it will also directly affect the fry Survival rate. According to our practice, the best time of Qing Tong should be at 4