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1990—1991年试验比较了豫棉四号和中棉12号各生育时期地下部与地上部生理代谢的差异。结果表明,豫棉四号生育早期根系活力极显著高于中棉12号,这是其生育早期地上部旺盛生长,及早进入生殖生长的前提。而且生育中期营养生长不过旺,避免了后期贪青晚熟,同时也利于同化养料的贮存。到吐絮时豫棉四号营养体活力与叶片同化功能保持稳定水平,不早衰,同时叶片中贮存的有机养料又能及时转移供应棉铃与纤维生长需要,利于品质和产量的提高。
The experiments from 1990 to 1991 compared the differences of physiological metabolism between the underground part and aboveground part of Yumai No. 4 and Zhongmian No. 12. The results showed that the root vigor of Yumian No.4 was significantly higher than that of Zhongmian 12 at early growth stage, which was the prerequisite for the vigorous growth of shoots early in reproductive stage and early access to reproductive growth. And the growth of mid-term vegetative growth, however, Wang, late to avoid the late greed, but also conducive to the assimilation of nutrients storage. At the time of boll opening, Yumai No.4 nutrient body vitality and leaf assimilation function maintained a stable level and did not prematurely decline. At the same time, the organic nutrients stored in the leaves were able to timely transfer and supply cotton bolls and fiber growth needs, which was conducive to the improvement of quality and yield.