“渔业要丰收,良种是关键”。但生产实践证明,即使尽量选择无病无伤的鱼种,若直接下塘也往往把病原带入水中,交叉感染引起鱼病,往往给生产造成较大损失。为切断传染源,把好鱼种下塘关,笔者根据多年从事水产技术推广工作的经验和受农作物包衣技术的启发,探索出对下塘前的鱼种进行“包衣”技术处理的好做法。2005年5月,在东方红志诚渔场池塘进行对比实验,同比发病率降低23%,平均亩增效益100—200元,取得显著 “Fisheries to harvest, seed is the key.” However, production practice has proved that, even if as far as possible to choose non-disease-free fish species, if the pond is also directly under the pathogens into the water, cross-infection caused by fish disease, often resulting in greater loss of production. In order to cut off the source of infection, the good fish under the pond off, the author based on years of experience in the promotion of aquaculture technology and crop coating technology inspired to explore the pond before the species of “coating” technology is good practice. In May 2005, comparative experiments were carried out in ponds of Dongfang Hongzhicheng fishery, with a year-on-year decrease of 23% and an average profit increase of 100-200 yuan per mu, achieving remarkable results