Shorter basal internode, longerpanicle base and higher plant height was benefit to enhance photosynthetic productive and makefirm foundation for high yield. 9.

• 茎基部节较短，穗颈节相对较长，茎秆相对较矮，株高相对较高，这样的株型有利于叶层配置，提高上部叶片的光合生产力，为高产打下了坚实的基础。