随着集约化进程的深入,人工养殖单产屡创新高,饲料投喂大幅增加。有研究表明,在池塘养殖投喂的湿饲料中,有5%～10%未被鱼类食用,而被鱼类食用消化的饲料中又有25%～30%以粪便的形式排出。高密度放养、大量施肥投饵的养殖模式,导致养殖水体富营养化相当严重,池塘的自净作用无异于杯水车薪。中华鳖的养殖环境对于池塘养鱼而言更易恶化,其 With the deepening of intensive process, the artificial breeding yield hit record highs and the feed ration increased substantially. Studies have shown that 5% to 10% of the wet fodder fed in ponds is not consumed by fish, and 25% -30% of the fodder consumed by fish is excreted in the form of excrement. High-density stocking, a large number of fertilization feeding farming model, resulting in aquaculture water is very serious eutrophication, the pond’s self-purification effect is tantamount to drop in the bucket. Trionyx sinensis breeding environment for pond fish is more likely to deteriorate, its