一、在当前生产条件下早、中稻品种作连作晚稻栽培的现实意义历年来改变耕作制度的组织观念证明,提高复种指数,扩种连作稻,是迅速提高产量的一种有效措施。本省自1955年起,全省以“五改”“三发展”为中心,全面推行改制,大力提高复种指数,连作稻的种植面积有了很大的发展,获得了显著的增产效果。但采用原来单季晚稻品种作道晚栽培,需早播延长秧龄,稀播培育老壮秧,这样,随着改制面积的扩大,在生产上也带来了劳力、肥料、季节及秧田面积扩大等一系列问题,限制了全年产量的迅速提高,在改制 First, under the current production conditions, the practical significance of the early and middle rice varieties for continuous cropping in late rice. The organizational concept of changing the farming system over the years has proved that raising the multiple cropping index and expanding the cropping rice is an effective measure to rapidly increase the yield. Since 1955, the province has been implementing the “five reforms” and “three developments” as the center. The reform has been implemented throughout the province and the multiple cropping index has been greatly enhanced. The cultivated area of ​​continuous cropping paddy has been greatly improved with remarkable yield-increasing effect. However, using the original single-season late rice varieties for late-night cultivation, the need for early sowing to extend the seedling age, thinning seedling cultivation of old seedlings, so that, with the restructuring of the area to expand, in the production also brought labor, fertilizer, season and seedling area expanded And a series of issues, limiting the rapid increase in annual output, the restructuring