【摘要】 在温室条件下研究了甲基磺草酮的除草活性、对玉米的安全性以及表面活性剂、温度和降雨对甲基磺草酮除草活性的影响。结果表明,甲基磺草酮土壤处理150g/hm2,茎叶处理100g/hm2对杂草的防效可达到80%　;在甲基磺草酮正常应用剂量下土壤处理或茎叶处理对玉米安全　;表面活性剂快得7的加入可明显提高药效　;温度高,有利于甲基磺草酮药效发挥;施药后1　h降雨,对甲基磺草酮药效无影响。更多还原

【Abstract】 Greenhouse studies were conducted to investigate weed control and crop safety for preemergence (PRE) and postemergence (POST) application of mesotrione. Studies also include the influence of adjuvant, temperature and rainfall against mesotrione performance. Mesotrione PRE at 150 g a.i./ha or greater controlled weeds at least 80%. POST mestrione at 100 g a.i./ha or greater controlled weeds at least 80%.Corn was tolerance to mesotrione. The activity of mesotrione increased with promotion of temperature. Rainning after 1 hour of mesotrione application have no influence to the weed control.更多还原