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对水稻主茎不同蘖位上分蘖成穗后的穗粒数变化情况的分析结果表明，随主茎第一蘖位向上移动，蘖位优势呈现出由强→弱→强→弱的变化规律。当一个主茎蘖位上利用一个一次分蘖和两个二次分蘖成穗时，优势蘖位的上限为主茎叶片数减去１０，利用一个一次分蘖成穗时，优势蘖位的上限为主茎叶片数减去７。在相同密度条件下，利用中位蘖栽培，能提高每穗粒数５．４４％以上，表现出具有较大的增产潜力。
The results of the analysis of the number of spike grains after tillering and heading at different tillering positions of rice main stem showed that the tillering position presented a changing trend from strong to weak to strong to weak with the first tiller position of main stem moving upward. When using a primary tillering tiller and two secondary tillering spike, the upper limit of the dominant tillering position is the number of main stem leaves minus 10, the use of a first tillering spike, the upper limit of dominant tillering position is The number of main stems minus 7. Under the same density, mid-tillering could increase the grain number per spike above 5.44%, showing a great yield potential.