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通过棉花花铃期用不同DPC（缩节胺）剂量化控对株型和空间成铃分布的影响效应进行分析，表明，花铃期重控极端地抑制棉株营养体生长，使果枝数减少9．65－28．95％，总果节数减少12．04－28．42％，由于冠层密集，叶片变小，内围铃脱落严重，较CK多34．9－38．0％，且熟期延迟，产量降低，较适控减少10．8─12．0％。
The effects of DPC (Dilute) dose control on the distribution of plant type and spatial distribution of bolls in flowering stage of cotton bollworm were analyzed. It showed that the heavy flowering and bollworm control the vegetative growth of cotton plants and reduced the number of fruiting branches 9.65-28.95%, the total number of segments decreased by 12.04-28.42%. Due to the canopy density and the smaller leaves, the inner ring bells shed more seriously than the CK by 34.9-38.0% And the maturity of the delay, reduce production, more suitable control to reduce 10.8 ─ 12.0%.