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一、调控的基本方式1.肥水调控(1)施肥施肥的品种、数量、方法和时期对棉株和群体发展有明显影响。施肥调控的时段长、调控幅度大、方法灵活、调控效果好。(2)灌水灌水调控的时段主要集中在初花期至铃期,调控强度大,速度快而时效适中。2.化学调控(1)生长素667米~2赤霉素1克对水30千克,喷施3～5天见效。(2)抑制剂(缩节胺)在苗期至花铃期根据情况喷施效果很好。(3)催熟剂(乙烯利)主要用于吐絮期,增加霜前花比例,改善棉纤维品质。3.物理调控(1)揭膜在1水前揭膜是解决残膜回收、减少
First, the basic mode of regulation 1. Fertilizer regulation (1) Fertilization of the varieties, quantity, methods and period of cotton plants and groups have a significant impact on the development. Fertilizer regulation and control of a long period of time, a large range of control, flexible method, control effect is good. (2) The regulation period of irrigation and irrigation mainly concentrated in the early florescence to the boll stage, the control intensity was high, the speed was quick and the time-effect was moderate. 2. Chemical control (1) Aging hormone 667 m ~ 2 g g GA 30 kg, spraying 3 ~ 5 days effective. (2) inhibitor (amide) in the seedling to flowering period according to the situation spraying good results. (3) ripening agent (ethephon) is mainly used for bolting flocculus, increase the proportion of flowers before frost, improve cotton fiber quality. 3. Physical Regulation (1) Uncovering film in a water before the film is to solve the residual film recovery, reduce