后坝乡位于湖北省利川市汪营区,地处齐跃山脚下的清江源头,海拔1200米,气候多雨潮湿,寡照多雾,春秋两季寒潮侵袭频繁。全乡有耕地1.3万亩,其中水田6672亩,长期冬泡田占90%以上,冷浸田、烂泥田、锈水田、青泥田面积约2800亩。这部分稻田,因受高位地下水、冷泉与地表渍水的影响,土壤终年处于还原状态之中,土体无层次分异,泥层深而浮烂,无结构、土性冷,亚铁反应强,“冷、烂、毒”是土壤的三大障碍因子。秧苗移栽后,返青迟,不起发(群众反映要待“唱伏水”后才发),后期多病害,产量一 Houba Township is located in Wangying District, Lichuan City, Hubei Province, located at the foot of Qiyue Qingjiang River source, elevation 1,200 meters, the climate is wet and rainy, foggy and foggy, frequent cold wave in spring and autumn. The township has 13000 acres of arable land, of which 6672 acres of paddy fields, long-term winter bubble fields accounted for more than 90%, cold dip fields, muddy fields, rust paddy fields, green mud fields an area of ​​about 2800 acres. Due to the influence of high groundwater, cold springs and surface waterlogging, the soils in this part of the paddy field are in a state of restitution all year round. The soil has no layer differentiation and the soil layer is deep and rotten. There is no structure, cold soil, strong ferrous reaction , “Cold, rotten, poisonous” is the three major obstacle of soil. Transplantation of seedlings, late return green, no hair (the masses to be treated to “sing volts” after the hair), the late multi-disease, a