鱼种是夺取养鱼高产优质高效的物质基础。鱼种培育是渔业生产的重要环节之一、充分利用秋季将小规格，瘦弱的鱼种培育成膘肥体壮的大规格鱼，可以显著提高养殖效益。1、改善鱼种生活环境。原培育鱼种的鱼池，经过几个月的饲养，其水质逐渐老化，溶氧降低，饵料生物减少。致病微 Fish species is to capture high-quality fish production of high-quality material basis. Fish breeding is one of the important aspects of fishery production. Making full use of the large-sized fish with small size and emaciated species that grow in autumn can make a great improvement in breeding benefits. 1, improve the living environment of fish species. Fish ponds of the original cultivation of fish species, after several months of breeding, its water quality gradually aging, dissolved oxygen decreased, food organisms reduced. Pathogenic Micro