“种种番薯种种稻,番薯水稻两样好”,这句农谚是浙南山区群众稻薯轮作长期积累的经验总结。浙南山区稻薯轮作有较长的历史,栽培经验丰富,过去受小农经济的限制,得不到发展,合作化以后,特别是公社化以后,在生产关系进一步改善的基础上,大办农业、大办粮食,提高复种指数,注意用地和养地相结合,稻薯轮作更显示了它的优越性,因而轮作面积日益扩大,单位面积产量也进一步提高。稻和甘薯轮作有隔年轮作和隔季轮作两种方式。隔年轮作主要在山区,有一年水稻一年甘薯,几年水 “A variety of sweet potato variety of rice, sweet potato, rice two kind of good,” this saying is the southern mountain peasants in southern Zhejiang potato crop long-term accumulation of experience. In the mountainous areas of southern Zhejiang, there was a long history of cultivation of rice and potato, and cultivation experience was abundant. In the past, due to the restriction of small-scale peasants’ economy, the development of the potato-potato rotation failed. After the co-operation, especially after the communalization, In the meantime, we should increase grain production and raise the index of multiple cropping. We should pay attention to the combination of land use and raising land. The rotation of rice-potato rotation shows its superiority. Therefore, the rotation area is expanding day by day and the yield per unit area is further increased. There are two kinds of rotation between rice and sweet potato rotation in the next year and alternate rotation. The following year the rotation is mainly in the mountains, a year of sweet potato year, a few years of water