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[目的]明确滨海盐碱棉区常用土壤处理除草剂对棉田杂草的防除效果。[方法]通过播种期不同施药时间及氟乐灵不同混土深度处理,比较供试除草剂对杂草的防效。[结果]3种除草剂对禾本科杂草防效优于阔叶杂草,氟乐灵株防效最高,分别为88.5%和85.3%;施药时间上,播前+播后处理防效最高;氟乐灵混土效果以深耙(5 cm)优于浅耙(2 cm)。[结论]供试除草剂对滨海盐碱棉田杂草具有较好的防除效果,药剂选择、施药时间及混土是提高防效的关键。
[Objective] The research aimed to clarify the control effects of herbicides commonly used in coastal saline-cotton area on weeds in cotton fields. [Method] The control effects of herbicides on weeds were compared by different application times of sowing time and different depths of trifluralin. [Result] The results showed that the control effect of three herbicides on weeds was better than that of broad-leaved weeds. The control effect of trifluralis was 88.5% and 85.3%, respectively. The spraying time and pre- The highest effect of trifluralin was achieved by deep rake (5 cm) over shallow rake (2 cm). [Conclusion] The tested herbicides had a good control effect on the weed in coastal salinization cotton and cotton fields. The choice of medicament, application time and mixed soil were the keys to improve the control effect.