杂交水稻在全国各地发展很快,它优势强,米质好,增产潜力大,是提高我国水稻生产的重要途径。但是,在我县也有人说: “杂交水稻虽然产量高,但种子贵、需肥多、病虫重,不划算”。 1985年,我们针对划不划算的问题对杂交中稻与常规中稻进行了技术经济效益试验和调查。试验调查地点为 Hybrid rice has developed rapidly throughout the country. It has the advantages of strong advantages, good quality of rice and great potential for increasing yield. It is an important way to improve rice production in China. However, some people in my county also said: “Hybrid rice, although high in yield, is expensive in seeds and needs more fertilizer and pests and diseases and is not worth the money”. In 1985, we tested and investigated the technical and economic benefits of hybrid mid-rice and conventional mid-rice for unearmarked issues. The location of the survey is