1.调节酸碱度:鱼类生长的适宜pH值为7.5～8.6。据测试,没有清淤泥的池塘,pH值7.3～7.5,不能满足鱼类的生长需要。试验表明,给水深1.5米的鱼塘每0.067公顷施入草木灰110～190千克,水中的pH值可上升到8左右。2.培肥水质:在鱼塘中经常施入草木灰,能增加水中钾、磷、钙、镁等元素的 1. To adjust the pH: suitable for fish growth pH 7.5 ~ 8.6. According to the test, there is no clear silt pond, pH value of 7.3 to 7.5, can not meet the growth needs of fish. Tests show that for every 0.067 hectare of fish ponds with a water depth of 1.5 m, 110 to 190 kg of grass ash are applied, and the pH in water can rise to about 8. Fertilization water quality: often put ash in fish ponds, can increase the water potassium, phosphorus, calcium, magnesium and other elements