水害田是湖北省和南方稻区主要水稻低产田。据对湖北省21个县统计,水害田约占稻田面积的38.5％。湖南省水害田占稻田面积31.7％。南方其它各省,水害田占稻田面积多在15～25％以上。水害田,水冷、泥烂、毒性大,有效养分少,水稻产量低。平均单产要比正常田低10～20％,有时产量只有正常田的一半。水害田包括冷浸烂泥田、落河田、青泥 Water pollution is a major rice paddy field in Hubei Province and southern rice fields. According to the statistics of 21 counties in Hubei Province, waterlogged fields account for about 38.5% of the paddy field area. Waterlogging fields account for 31.7% of paddy fields in Hunan Province. In other southern provinces, paddy fields account for more than 15-25% of paddy fields. Water pollution, water-cooled, muddy, toxic, less effective nutrients, low-yield rice. The average yield is 10 to 20% lower than normal, sometimes only half of normal field. Water pollution fields include cold-soaked muddy fields, Ladahe and Qingni