棉田杂草种类繁多,危害严重,人工难以防除。近年来,我省国营农场棉田大面积采用化学除草的方法,取得了较好效果。为了推广这一方法,现将有关应用技术作如下介绍。一、化学除草剂在春棉上的应用。我省国营农场春棉面积比较大,化学除草的方法主要是在棉花播种后出苗前施药。选用药剂 Weed variety of cotton fields, endangering serious, artificial difficult to control. In recent years, the method of chemical weeding has been adopted in a large area of ​​cotton fields in the state-owned farms in our province and has achieved good results. In order to promote this method, the application technology is introduced as follows. First, the application of chemical herbicide in spring cotton. The area of ​​spring cotton in our state-owned farms is relatively large. The method of chemical weeding is mainly applied before the emergence of cotton after sowing. Selection of drugs