在潜育化稻田中,于水稻移栽前,采取田中开围沟和厢沟,排、降田中渍水,防治渍害,改土增产效果显著.研究表明,能加速排除土内外渍水,降低地下水位,提高水温泥温,改善土壤通透性,增加土壤速效养分,促进水稻生长发育,增加稻谷产量. In gleaming rice fields, before transplanting rice, taking Tanaka ditch and the ditch of the valley, drainage, waterlogging in the field, prevention and control of soil erosion, soil improvement and yield improvement effect is remarkable.Research shows that it can speed up the exclusion of soil water, Reduce groundwater level, raise temperature of muddy water, improve soil permeability, increase soil available nutrients, promote rice growth and increase rice yield.