在我国水稻种植及水网发达地区的农村,自实行联产承包责任制后,对湖、河、沟、塘等水体普遍缺乏疏浚清理,导致水体功能下降,旱涝灾害频繁发生,怎么办?化肥的大量使用,使农田土壤板结,透气性差,导致农作物产量减少,农民收入难以提高,怎么办?安徽省马鞍山(含当涂县)利用小型潜水 In rural areas where paddy planting and water networks are developed in our country, since the implementation of the system of contract responsibility for the production by the allotment, there is a general lack of dredging and cleaning of water bodies such as lakes, rivers, ditches and ponds, leading to the decline of water body functions and the frequent occurrence of droughts and floods. Large-scale use of fertilizers, so that farmland soil compaction, poor air permeability, resulting in reduced crop yields, farmers income is difficult to increase, how to do? Ma On Shan, Anhui Province (including Dangtu County) the use of small diving