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用ＰＬＴＰＡ（植物低温保护剂）处理棉花幼苗，促进ＳＯＤ、ＰＯＤ、ＣＡＴ活性升高；ＭＤＡ含量降低；抗寒力鉴定结果表明，棉苗可抵抗－２℃～－５℃低温长达１２ｈ不受冻害。这种抗寒力可保持一个月。产量提高
PLTPA (plant cryoprotective agent) was used to treat cotton seedlings, which promoted the activity of SOD, POD and CAT and decreased the content of MDA. The identification of cold resistance showed that cotton seedlings could resist low temperature of -2 ℃ ~ -5 ℃ for 12h Frost damage. This cold resistance can be maintained for a month. Production increased