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采用空间因子均匀布点回归设计和计算机处理技术，研究了氮肥与化控配合应用对夏棉产量和霜前花率的影响，建立了以皮棉产量和霜前花率为目标性状的二元二次回归模型，进而求得高产优质氮肥、缩节胺综合取值最佳用量为纯氮１０．１４Ｋｇ／亩、缩节胺５．９ｇ／亩。降维分析表明，氮肥缩节胺均呈二次抛物线形，都有适宜的最高用量，过高过低，均非所宜。肥促化控应以肥为主，以控为辅，肥控结合，因肥施控，方可显示其协同效应。
The spatial distribution of uniform design and computer processing techniques were used to study the effects of nitrogen fertilizer and chemical control on the yield of summer cotton and the flower rate before frost. The binary yield Regression model, and then find the high yield and high quality nitrogen fertilizer, the optimum amount of syndiotactic ammonia synthesis of pure nitrogen 10.14Kg / mu, shrink amine 5.9g / mu. Dimension reduction analysis showed that nitrogen amidated amines are quadratic parabola, have the appropriate maximum dosage, too high and too low, are not appropriate. Fertilizer should be controlled mainly to fat, supplemented by control, fat control, due to fertilizer Shi control before showing its synergistic effect.