前言六十年代以来,矮壮素应用于棉花方面国内外进行了广泛的试验,卓玛斯1964年发现,生长在温室里的棉花,开花后喷施矮壮素,可以抑制主茎生长面对棉铃的发育没有不良影响。希尔法1970年指出,矮壮素减少棉花的果枝数和以后的产量。居著等人指出,在开花前喷施矮壮素延迟棉花成熟,降低皮棉产量。北京农业大学1964年报道,喷施矮壮素的棉花,脱落率减少,成铃数增加21%,由于棉株生长状况和用药的浓度、时间不同,矮壮数所表现的效应也不一致。棉花栽培实践中一条重要的经验,是蕾期要稳长,既要稳又要长,这两者之间是有矛盾的。这种矛盾在栽培管理上往往难于处理。近年各棉区试图在棉花蕾期生长适当偏旺的情况下,施用一定浓度的矮壮素,以期调和稳与长的矛盾,即试探“肥促药控”的途径,这一途 Preface Since the 1960s, CCC has carried out a wide range of tests at home and abroad on cotton. In 1964, Zhuoma found that cotton plants growing in greenhouses sprayed with CCC after flowering can inhibit the growth of main stems The development of cotton bolls has no adverse effect. Hill method in 1970 pointed out that CCC reduced the number of cotton branches and the subsequent production. Habitat et al. Pointed out that spraying CCC before flowering delays cotton maturation and reduces lint yield. Beijing Agricultural University reported in 1964, spraying cotton plant chloroplast, shedding rate decreased, the number of bells increased by 21%, due to the growth of cotton plants and the drug concentration and time vary, the effect of short strong number is inconsistent. An important lesson in cotton cultivation practice is that there is a contradiction between the two. This contradiction in the cultivation and management are often difficult to deal with. In recent years, the cotton area in the cotton bud trying to grow in the appropriate conditions, the application of a certain concentration of CCC, in order to reconcile the stability and long conflict, that is, testing “fat promote drug control” approach, this way