棉花适时打顶,可使棉花增产早熟,是棉田后期管理的一项重要技术措施。但是,如果打顶时期掌握不当,就得不到应有效果,甚至会造成减产。当前我们公社对棉花打顶时期有两种意见:一是主张早打顶,一是主张迟打顶。主张早打顶的人说,早打顶能减少蕾铃脱落,多结桃,结大桃,增产早熟;主张迟打顶的人说,迟打顶可使棉花充分利用生长季节,多长果枝,多结秋桃,提高产量。我们 Cotton timely hit top, cotton yield can be early maturity, cotton field is an important technical measure for the late management. However, if the improper mastery of the topping period can not be achieved, it will even result in a reduction in production. At present, our commune has two opinions on the cotton topping period: First, it advocates early topping, and first, it suggests that it should be late. Those who advocate early topping said that early topping can reduce the falling off of the buds, make more peaches and knot peaches and increase the yield of precocious puberty. Those who advocate late topping said that the late topping can enable cotton to make full use of the growing season, Multi-knot autumn, increase production. we