论文部分内容阅读
对以链、鳙为主养鱼类的混养鱼池，设计６种不同的追肥处理，在连续施用２年（养殖周期）的生产中对池塘底泥的ＰＨ值，有机质、全氮，全磷，全钾，含氯量，碱解氮，速效磷和钾，活性及缓效钾，交换钙和镁，有效锌、铜和镉、阳离子交换量等１７项理化性状指标进行分析。结果表明，６个鱼池的底泥均属灰潮土壤类型；所施用的氯化铵、碳铵、尿素、过磷酸钙、硫酸钾、有机肥等对底泥的理化特性均无不良影响，不污染环境。并与同类蔬菜土壤进行了比较和分析，讨论了这些指标与鱼池生产性能的关系。
Six kinds of top dressing treatments were designed for the mixed fish ponds with the main chain of fish and the main fish, and the pH, organic matter, total nitrogen, and total nitrogen of the pond sediments in the two consecutive years (breeding cycle) Phosphorus, total potassium, chlorine, nitrogen, available phosphorus and potassium, activity and slow-acting potassium, exchange of calcium and magnesium, zinc, copper and cadmium, cation exchange capacity of 17 physical and chemical properties indicators were analyzed. The results showed that the bottom sediments of 6 fish ponds all belong to the type of ash tide soil. The applied ammonium chloride, ammonium bicarbonate, urea, calcium superphosphate, potassium sulfate and organic fertilizer had no adverse effect on the physicochemical properties of the sediment. polluted environment. Compared with the same vegetable soil, and discussed the relationship between these indexes and the performance of fish ponds.