红壤辟为稻田,其增产效果和改土作用十分明显,是有效利用红壤资源的主要途径之一。但连年采用绿肥——双季稻,作物单纯,又不能充分利用地力。我们根据红壤地区夏季多雨宜种水稻,秋季较旱宜种旱作(玉米)的特点,以冬季绿肥和油菜隔年轮种的两年五熟水旱轮作制,以及实施秸秆还田和旱作(玉米和油菜)“限耕”来提高经济效益和改土培肥作用。经过3个轮作周期 Red soil is cut into paddy field, the effect of increasing yield and improving soil are very obvious, which is one of the main ways to utilize red soil resources effectively. But in recent years the use of green manure - double cropping rice, simple crops, they can not make full use of fertility. Based on the characteristics of rainy rice varieties suitable for summer in the red soil region and the drier and better-suited winter crops (maize) in autumn, the two-year five-crop rotation and rotation system of green manure and rapeseed were carried out in winter, Corn and rape) “limited farming” to improve economic efficiency and improve soil fertility. After 3 rotation cycles