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１９９１～１９９３年通过大田试验，对棉花不同群体干物质在各器官的积累与分配规律进行了曲线拟合。结果表明，各器官干物质积累均呈不同程度偏斜的Ｓ形曲线，而棉株干物质在各器官间分配规律则因器官的不同各有不同。根、果枝及果枝叶呈抛物线形曲线，主茎为ｙ＝ａｘｅｂｘ形曲线，主茎叶为ｙ＝（ａ＋ｂｘ）／ｘ形曲线；蕾为“钟形”曲线，铃呈Ｌｏｇｉｓｔｉｃ曲线。此外，对群体密度的影响也进行了探讨，在试验密度范围内，群体密度的影响主要表现在干物质积累量上，对各器官的积累与分配规律的影响无明显差异。
From 1991 to 1993, through field experiments, curve fitting was conducted on the accumulation and distribution of dry matter in different organs of different cotton populations. The results showed that the dry matter accumulation of all organs showed skewed S-shaped curves to varying degrees, while the distribution of dry matter in cotton plants varied from organ to organ. Roots, fruiting branches and fruit leaves showed a parabolic curve, the main stem y = axebx-shaped curve, the main stem leaves y = (a + bx) / x-shaped curve; bud for the “bell-shaped” curve, bell was Logistic curve. In addition, the effects of population density were also discussed. Within the experimental density range, population density mainly affected the accumulation of dry matter, and had no significant effect on the accumulation and distribution of various organs.