在低洼湖区,有大量沼泽湖滩,是发展商品生产的好地方。在单纯抓粮时,大多数改成了粮田,既挤占了暴雨时渍水调蓄容积,由于它本身的渍水也要外排,又增加了机电排水的负担,因而常常是生产投入多,收益少,有时因排水不及,甚至淹得颗粒无收。近几年调整农业生产结构,“退田还湖”呼声很高,而还湖养鱼,田内排水负担虽小了些,但由于养鱼本身要求蓄水,遇到下暴雨, In the low-lying lake area, there are a large number of marsh lake, is to develop a good place for the production of goods. When simply grasping grain, most of them are changed into grain fields, which not only occupy the storage volume of the waterlogging when heavy rains, but also increase the electromechanical drainage load because of the waterlogging itself, which often results in more production inputs , Less revenue, and sometimes due to drainage, or even submerged particles confiscated. In recent years, adjusting agricultural production structure, “returning farmland to lake” voice is very high, but also the lake fish, the field drainage burden is smaller, but as the fish itself requires water, encountered heavy rains,