再生稻是在水稻收获第一季后,开发头季腋芽再次种植收获的一季水稻。在种植一季稻热量有余,而种植双季稻热量又不足的地区及双季稻区只种一季中稻的稻田发展再生稻,是提高复种指数、增加稻田单位面积稻谷产量和经济收入的有效措施之一。由于我国经济发展,南方主要稻作区劳动力向沿海发达地区转移,使得劳动力紧张。发展再生稻可以缓解双季稻区“双抢”季节劳动力紧张的矛盾,降低劳动成本。因此,再生稻已逐渐成为我国重要的水稻种植制度之一。然而,由于特殊的栽培与管理措施,再生稻稻田土壤突出的问题是土壤养分 Regeneration rice is the first season rice harvest after the first season, the development of the first season axillary buds planted again harvested rice. It is an effective measure to increase the multiple cropping index and increase the paddy yield and economic income per unit area of ​​paddy field in the areas where more than one calorie is planted and where calorie deficient areas are planted and double cropping paddy fields with only one season of middle season rice one. Due to the economic development in our country, the labor force in the main paddy area in southern China has shifted to the developed coastal areas, which has caused the labor shortage. The development of ratooning rice can ease the contradiction between the two-season rice crop area and the “double grab” seasonal labor shortage and reduce the labor cost. Therefore, ratooning rice has gradually become one of the important rice planting systems in our country. However, due to special cultivation and management measures, the prominent problem of ratoon paddy soil is soil nutrient