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长沙地区属中亚热带内陆季风湿润气候区,水稻生产以双季稻为主。近年来推广双季杂交水稻,迫切要求解决栽培期问题。本研究采用近年来我省推广面积极大的威优35、威优6号和汕优6号三个组合作材料,于1982年和1983年采用分期播种和生长分析法,试图从杂交水稻干物质生产的生态生理和光能利用的角度,研究长沙地区水稻生长季节内光热条件与杂交水稻产量形成、产量结构和产量的关系,从而找出杂交水稻适宜栽培期特别是最优栽培期。
Changsha area is subtropical inland monsoon humid climate zone, rice production mainly double cropping rice. In recent years to promote double-season hybrid rice, an urgent request to solve the cultivation period. In this study, we use the three groups of Weiyang 35, Weiyou 6 and Shanyou 6, which are the most popularized areas in our province in recent years, as materials. In 1982 and 1983, The relationship between light and heat conditions in rice growing season and yield formation, yield structure and yield of hybrid rice in Changsha were studied from the aspects of ecological physiology and light energy utilization of material production, and the suitable cultivation period, especially the optimal cultivation period, of hybrid rice was found out.