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运用发育追踪法，统计和相关分析研究了叶枝发生发育规律。试验结果表明，在本试验条件下，只有主茎上第４节及其以上节位的叶芽才能发育成有效叶枝，且叶枝成铃数与其着生节位呈显著正相关关系。叶枝经打顶后，叶枝铃主要以伏桃为主。在１～４个叶枝范围内，叶枝数与全株成铃数呈显著间接正相关关系，当达到３个叶枝时，单株成铃数达到了本试验条件下增产显著所要求的铃数。但叶枝数超过一定限度后，全株成铃数会减少。随着果枝始节的提高，叶枝铃贡献率增加，第９节及其以上节位现蕾的棉株，其单株成铃数明显比低节位现蕾棉株多。
Using developmental tracing method, statistics and correlation analysis to study the development and development of leafy branches. The results showed that under the conditions of this experiment, only the leaf buds of the 4th and above nodes on the main stem developed into effective leaf branches, and the number of bolls of leaf branches had a significant positive correlation with the birth node. Leaf branches after the top, leaf bell main to V peach. In the range of 1 to 4 branches, the number of branches and the number of bolls of the whole plant showed a significant positive correlation. When the number of branches reached 3, the number of bolls per plant reached the number of bells required for the significant increase under the test conditions. However, if the number of leaf branches exceeds a certain limit, the number of bolls in the whole plant will decrease. With the beginning of the fruiting branch increased, the contribution rate of the branch was increased, and the number of bolls per plant in the 9th and above internodes was more than that in the low node.