75%苯磺隆WG在莜麦田间除草效果

Experiment of Tribenuron-methyle 75% WG for Controlling Weeds in the Naked Oats Field

使用75%苯磺隆WG在冀西北坝上地区对莜麦田间杂草进行除草试验。结果表明:75%苯磺隆WG对莜麦田中的阔叶杂草具有较好的防效,药后30d对阔叶杂草的平均株防效和鲜重防效分别为87.1%和93.4%,生产上建议使用剂量为13.5～22.5g/hm2(制剂用量)。75%苯磺隆WG对藜、大刺儿菜、猪毛菜、反枝苋的防效最好,药后30d的平均株防效和鲜重防效都达99%以上。对田旋花的防效较对藜、大刺儿菜、猪毛菜、反枝苋防效偏低,药后30d的平均株防效和鲜重防效分别为50.3%和85.5%。

According to the result of field trial, it is showed that tribenuron-methyl 75% WG could effectively controlled broad-leaved weeds of naked oats field in the northwest dam of Hebei Province. Thirtieth days after treatment, the average number of trees and fresh weight control effect were 87.1 and 93.4% at the level of 13.5 to 22.5 g/ha. Tribenuron-methyl 75% WG had highest effect to Chenopodium album, Cephalanoplos setosum, Salsola collina, Amaranthus retroflexus and the average number of trees and fresh weight control effects were over 99% after 30 d. But there had lower control effets to Convolvulus arvensis, the average number of trees and fresh weight control effect were 50.3 and 85.5%, respectively.