【摘要】 测定了 6个 N -硝基二苯基脲衍生物 ( )在 5 0 0 mg/ L浓度下对稗草 Echinochloa crusgalli和绿苋 Amaranthus viridis的除草活性 ,从中筛选出两个化合物 b、 e做系列浓度试验。结果表明 ,它们对稗草、绿苋均表现出一定的抑制活性 ,且随着浓度增加 ,抑制活性增强。更多还原

【Abstract】 The herbicide activities of six N nitro diphenyl urea derivatives (Ⅰ) with concentration of 500 mg/L on Echinochloa crusgalli and Amaranthus viridis were tested. Ⅰb and Ⅰe were selected for herbicide activity test under concentrations of 125?250?500?750?1 000 mg/L on Echinochloa crusgalli and Amaranthus viridis . The results showed that Ⅰb and Ⅰe had restraining activities on Echinochloa crusgalli and Amaranthus viridis . The restraining activities were enhanced when their concentrations were increased.更多还原