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根据1995～1998 年对留叶枝棉的研究结果,棉花留叶枝对产量影响较大,留叶枝棉4 年6 点平均增产皮棉108Kg·hm - 2 ,增长8.02% ,叶技对产量的贡献率最大可达31.09% ,平均为27.2% 。靠近主茎第一果枝以下1～3 个叶枝,其上的果枝,果节多,结铃多,为强优势叶枝。留叶枝棉生物学机理表现为前中期最适最大叶面积扩展期长和峰值高,光合产物生产积累多,向生殖器官转运量大,促进了棉花生长发育,现蕾、开花、结铃强度提高等。
According to the research results of the leaves from 1995 to 1998, the effect of leaf retention on cotton yield was greater. The yield of cotton leaves increased by 8.02% at 6:00 am at 4 years, and the contribution of leaf technology to the yield was the largest Up to 31.09%, an average of 27.2%. Near the main stem of the first fruit branch following 1 to 3 leaf branches, the fruit branches, fruit section and more, more bell-shaped, strong leafy branches. The biological mechanism of leaves cotton leaves showed that the maximum and maximum leaf area in the middle and early stages had a long and high peak, photosynthetic products accumulated more and transported to reproductive organs, which promoted cotton growth and development, increased budding and flowering, and increased boll intensity Wait.