一、根据池塘底质和塘泥淤泥的多寡确定施用底质为酸性,且池底淤泥较多,呈黑色或黑褐色者可适当多施,以中和其酸性;底质为碱性土壤,且是新开的池塘,淤泥又少,应尽量少施或不施,否则反使肥力下降,会加剧磷酸盐的沉淀固定,降低水中有效磷的浓度,使氮磷比例失调,不利于浮游植物的 First, according to the amount of pond sediment and pond mud to determine the application of sediment is acidic, and the bottom sediment more black or dark brown may be appropriate to apply, in order to neutralize its acidity; Substrate alkaline soil, And is a newly opened pond, sludge and less, should be minimal or no Shi, or against the decline of fertility will aggravate phosphate precipitation fixed, reduce the concentration of available phosphorus in water, so that the proportion of nitrogen and phosphorus disorders, is not conducive to phytoplankton of