研究了质量浓度为１０～４０ｍｇ·Ｌ－１Ｓ３３０７浸种２４ｈ对棉苗生长及某些酶活性的影响，结果表明，Ｓ３３０７浸种明显抑制棉苗胚根伸长，并随用量的增加，抑制作用增强，但能有效地促进棉苗侧根生长，单株干重显著增加，根冠比增大，幼苗根系活力，ＳＯＤ，ＰＯＤ和ＮＲ活性增强，棉苗脚高降低，外观健壮，叶色浓绿 The results showed that S3307 soaking significantly inhibited the elongation of radicle in cotton seedlings, and with the increasing of the dosage, the inhibiting effect was enhanced. But could effectively promote the growth of lateral shoots of cotton seedlings, the dry weight per plant increased significantly, the ratio of root to shoot increased, the activity of root system increased, the activities of SOD, POD and NR increased, the height of cotton seedling decreased,