从春季开始投苗至秋季,历经四五个月的养殖池塘底质随养殖时间的延伸而不断老化,饲料等有机物培育出大量的微生物(包括害虫和病菌),秋季适温的天气再加上质变的环境,池塘往往变成病虫害繁殖的温床,直接对鱼类形成威胁。秋季早晚温差较大,池塘水体容易因上下分层而缺氧。 Starting from the spring to vote seedlings to autumn, after four or five months of breeding pond sediment with the extension of the growing aging, feed and other organic matter to cultivate a large number of microorganisms (including pests and germs), autumn warm weather plus In a qualitatively changing environment, ponds often become breeding grounds for pests and diseases, posing a direct threat to fish. The temperature difference between morning and evening in autumn is relatively large, pond water is easily delaminated due to stratification.