重穗型杂交水稻新组合冈优725物质积累与分配特性研究  

A Study on Accumulation and Distribution of Dry Matter of Heavy-ear Hybrid Rice Variety Gangyou 725

作　　者：胡运高[1] 魏灵[1] 宋德明[1] 吴凡[1] 王茂理[1] 饶兴 

机构地区：[1]四川省绵阳市农业科学研究所,绵阳621002

出　　处：《绵阳经济技术高等专科学校学报》1998年第3期5-9,18,共6页Journal of Mianyang College of Economy & Technology

摘　　要：通过对重穗型杂交水稻新组合冈优725不同时期根系发育、叶面积系数、叶绿素含量和干物质重的测定与分析表明，该组合源足库大，光合效率高，光合产物运转通畅。干物质积累量大，分配合理。Gangyou 725,a hybrid combination of medium indica with late maturity,is characterized by stable and high yields, good grain quality and wide adaptability- It is now being extended to a very large area. In order to explore the mechanism of its high yielding potential,a study on characteristics of its dry matter accumulation and distribution was conducted. The results showed that the dry matter of subsecific heavy-ear hybrid rice Gangyou 725 accumulated much more dry matter than Shanyou 63 with the same maturity. The dry matter accumulation in the middle and late growth stages, the development of root systems and leaf area of Gangyou725 were higher than Shanyou 63.

关 键 词：重穗型 杂交水稻 干物质 积累 分配 冈优725 

分 类 号：S511.02[农业科学—作物学]