目前,棉花生产上普遍使用的土壤封闭除草剂是氟乐灵、乙草胺,常于棉花播种后出苗前喷施地面,方法简单,多年来一直在生产上被广泛应用。但是,人们很少重视氟乐灵、乙草胺除草对棉花的不利影响。氟乐灵、乙草胺不仅杀死杂草的根,而对棉花有隐性伤害, At present, commonly used soil-enclosed herbicides in cotton production are trifluralin and acetochlor, which are often sprayed on the ground before emergence after sowing in cotton. The method is simple and has been widely used in production for many years. However, little attention has been paid to the adverse effects of trifluralin and acetochlor on cotton. Trifluralin, acetochlor not only kill the roots of weeds, but recessive damage to cotton,