棉花生长期长,整枝占用大量劳力。棉田里的中耕、锄草、追肥、浇水、治虫等管理工作,还可使用机械或半机械操作,唯有整枝,必须手工操作。据调查统计:一亩棉花整枝的用工量,多的可达30个劳动日,少的也要用十来个工,要占全部管理劳动量的三分之一左右。投这么多工,增产多少?整枝的效果究竟如何?是值得研究的一个问题。棉花整枝是沿袭前人植棉经验流传下来的。进入二十世纪,西方农业科学技术传到 Cotton grows long, pruning takes up a lot of labor. Cotton field cultivation, weeding, top dressing, watering, pest control and other management, but also the use of mechanical or semi-mechanical operation, only the pruning, must be manually operated. According to the survey and statistics: the acreage of acreage of cotton pruning can reach as many as 30 working days and less than a dozen workers, accounting for about one-third of the total amount of management work. Investment so much work, how much production? The effect of pruning? Is worth studying a problem. Cotton pruning is inherited from the experience of the former cotton plant handed down. Into the twentieth century, Western agricultural science and technology reached