85%单嘧磺酯钠盐SP在冬小麦田的除草效果及安全性田间试验

Field Experiments of Monosulfuron-ester Sodium Salt 85% SP Against Weeds in Winter Wheat Fields

采用田间小区试验方法进行了85%单嘧磺酯钠盐SP防除冬小麦田杂草的田间药效试验。结果表明:85%单嘧磺酯钠盐SP 15～22.5 g/hm2(有效成分用量)在冬小麦返青期施用,能有效防除麦田中播娘蒿、荠菜等阔叶杂草,对禾本科杂草雀麦也有一定的防治效果。施药后40 d,对杂草的总体鲜重防效在98%以上,推荐剂量下施用对小麦安全。

The field experiments of monosulfuron-ester sodium salt 85% SP for controlling weeds in winter wheat fields were conducted. The results showed that monosulfuron-ester sodium salt 85% SP had good control efficaeies on broadleaf weeds including Descurainia sophia, Capsella bursa-pastoris, and had certain control efficacy on gramineous weed ofBromusjaponicus Thunb at the active ingredient dosage of 15-22.5 g/hm2. The fresh weight control effects were above 98% on the 40th day after spraying. At the recommended rate of application, the wheat was safe.