In order to raise the productivity of single ear,the initial size of population must be reduced,the number of seedling after the end of Dec,stablized,growth and development of plant individuals stimulated and effective tiller percentage increased.

• 栽培上应在一定穗数的前提下，主攻单穗重，减少基础群体，控制群体发展，促进个体发育健壮，提高分蘖成穗率是增加单穗生产力的重要条件；