棉花后期,在低温年份,采用乙烯利催熟,具有促进棉铃开裂,加快吐絮,提高品质,起到增产,增收的效果。但其种子选作留种用时必须正确对待。乙烯利是一种植物激素,与果实成熟和器官脱落等过程有关。正确使用乙烯利催熟比较安全,几乎没有残毒公害,对种子、发芽以及后代没有多大的影响。但使用不当、 Cotton later, in the low-temperature years, the use of ethephon ripening, with the promotion of cotton boll cracking, speed up the bolting, improve quality, play a yield, income effect. However, the seeds must be treated correctly when they are used as seeds. Ethephon is a plant hormone, and the process of fruit ripening and organ shedding. Proper use of ethephon ripening safer, almost no residue pollution, the seeds, germination and future generations do not have much influence. However, improper use,