由于鱼池承包责任制的不够完善,有些承包户进行掠夺性生产,致使鱼池淤泥沉积,池埂塌坡,生产条件逐年恶化。调查中发现,有些鱼池已变成锅底形,池底淤泥沉积厚度已超过1米。养鱼池淤泥沉积的厚度随着生产强化程度和鱼产量而变化。大体每养成50公斤鲜鱼,淤泥沉积1厘米, Due to the inadequate contract responsibility system of fish ponds, some contractors engaged in predatory production, resulting in the deposition of silt in ponds and the collapse of ponds and the deteriorating production conditions year by year. The survey found that some ponds have become the bottom of the pot, the bottom sediment deposition thickness has more than 1 meter. The thickness of silt deposits in fish ponds varies with production intensification and fish production. Basically, each culture to develop 50 kg of fresh fish, sludge deposition 1 cm,