棉花是一个具有无限生长发育习性的作物,其营养生长和生殖生长.既相共存,又相互矛盾。为了使两个生长向高产优质的生长目标发展。抓好棉花中、后期化学整技打顶则是一个很重要的增产措施。根据我们近四年来的试验、示范和推广生产实践,棉花采用化学整枝打顶。一般亩增产8～10%,且每亩能省人工3个,从而能有效地提 Cotton is a crop with unlimited growth and developmental habits, its vegetative and reproductive growth, both coexist and contradictory. In order to make the two growth to high yield and quality growth goals. Do a good job in cotton, post-chemical technology topping is a very important stimulation. According to our experiments in the past four years, demonstration and promotion of production practices, cotton using chemical pruning topping. General mu yield 8 ~ 10%, and can save labor 3 per acre, which can effectively mention