我省棉区无霜期短,霜后花占40％左右。特别是低温寡照年份,秋桃很难成熟,即使成熟的霜后花,品质也很差,经济价值不高。生产实践证明,在棉花晚熟的情况下,喷施400倍液乙烯利后霜前花为19.2—65.8％,而不喷的只有7.5—8.5％。可见,乙烯利催熟是战胜低温冷害、促进棉花早熟的有效措施。 Cotton province frost-free period is short, after the cream accounted for about 40%. In particular, the low-temperature oligo-year, autumn peach is difficult to mature, even after the maturity of the flower, the quality is poor, the economic value is not high. Production practice has proved that in the case of late-maturing cotton, sprayed 400 times after the pre-liquefied ethephon 19.2-65.8% before the spray, without spraying only 7.5-8.5%. Evidently, ethephon ripening is an effective measure to overcome the chilling injury and promote the precocity of cotton.