In this study, two cotton cultivars(Quanyin-2, Jiza-999) were used to research the effect of basal fruiting branch removal on SPAD values in the leaf subtending boll in the premature cotton and the related matter content during the cotton fiber development. The results indicated that the SPAD value in the treatment of removing two basal fruiting branches was higher than that of the control;meanwhile, removing basal two fruiting branches increased the transformation rate of sucrose and a higher transformatio...