在季节转换时,很多池塘都会出现水质突然变化的现象——在天气变冷或变暖时,水温也随之变冷或变暖后,塘水会突然发生水色变浓或水质变差等现象。这种水质突然发生变化的情况在那些已经好几年都没清过塘的老塘、塘底淤泥比较厚的池塘或已经很长时间没换过水的池塘最容易发生。究其原因,是塘水中的有机物浓度过高,池塘底部积累的残饵、粪便等有机 During the seasonal transition, sudden changes in water quality occur in many ponds - when the weather is chilly or warmer, the water temperature also becomes cooler or warmer, and the water in the pond suddenly becomes thicker or water quality deteriorates . This sudden change in water quality is most likely to occur in ponds where ponds have not been cleared for years, ponds with thick muddy ponds or ponds that have not changed water for a long time. The reason is that the concentration of organic matter in the pond water is too high, the bottom of pond accumulation of bait, stool and other organic