经过几年的池塘养殖,池底淤积越来越严重,特别是广大的农村坑塘本来就不够深,致使许多养殖池塘的水位过浅,养殖空间窄小。这些池塘如果不加以改造整修,养殖环境就会恶化,养殖效率也会降低。但是,在生产过程中,由于受资金、时间、人力等客观条件的限制,及时整修这些浅水池塘而使 After several years of pond aquaculture, siltation is becoming more and more serious. In particular, the majority of rural ponds are not deep enough, resulting in too many water levels in aquaculture ponds and a small breeding space. If these ponds are not renovated and renovated, the farming environment will deteriorate and the breeding efficiency will also be reduced. However, in the production process, due to financial, time, manpower and other objective constraints, the timely renovation of these shallow ponds so that