杂交稻海南冬季大规模制种中平衡高产的规范化技术体系

The Standardized Technical System of Balanced High-yield of Largescale Producing Seed in Hainan Winter of Hybrid rice

【研究目的】围绕着杂交稻制种最为关键的"产量"和"质量"两方面的因素,集成一套规范化的高产稳产、大面积平衡增产的杂交水稻海南冬季规模化制种的技术体系,显得尤为必要。【方法】以"中9优801"为例,总结了杂交水稻海南冬季规模化制种中大面积平衡高产、种子质量优的关键技术要点。【结果】包括选择最佳制种区,抽穗扬花高峰期在3月25日左右为最佳;父母本错期可用时差作为主要依据、适当兼顾叶差;培育多蘖壮秧,强化父本管理,早管促母本早生快发,定向构建强父多母的高质量异交群体;巧喷"九二0",科学赶粉;改善田间环境,防治病虫及福寿螺为害;严格除杂,适时收获,确保种子质量。【结论】以上结果可为其它新组合在海南冬季进行规模化制种提供参考依据。

[OBJECTIVE]Centering on the two crucial factors yield and quality in producing seed of hybrid rice, improving and integrating the technique of high-yield producing seed of hybrid rice to form a set of standardized technical system of stable high-yield and large-area balanced increasing-yield of large-scale producing seed in Hainan winter of hybrid rice is especially necessary [METHOD]Taking zhongjiuyou801, a new indica hybrid late season combination as example, according to the large-scale producing seed practice, the key technique of large-area balanced high-yield and better quality seed of hybrid seed production in the winter of Hainan were summarized [RESULTS]They include selecting best plot of producing seed, making March 25th around as the best heading flowering, using different age as the main basis of the lag period of parents and the leaf drop, fostering more tiller seedlings, strengthening paternal management, managing to promote maternal to grow quickly in early, constructing better out-crossing groups owning the strong father and many mother directly, spraying gibberellin ing the field environment, controlling pest and pests damage sure the quality of seeds[CONCLUSION]These results ing seed in Hainan winter for other new combinations. properly, driving powder scientifically, improv purifying strictly and harvesting timely to encan provide referential basis of large-scale producing seed in Hainan winter for other new combinations.