[目的]为明确50%烟嘧磺隆·甲基磺草酮·氯氟吡氧乙酸异辛酯水分散粒剂对夏玉米田杂草的防效及对玉米的安全性。[方法]采用茎叶喷雾施药,定期调查的方法进行田间药效试验。[结果]50%烟嘧磺隆·甲基磺草酮·氯氟吡氧乙...[目的]为明确50%烟嘧磺隆·甲基磺草酮·氯氟吡氧乙酸异辛酯水分散粒剂对夏玉米田杂草的防效及对玉米的安全性。[方法]采用茎叶喷雾施药,定期调查的方法进行田间药效试验。[结果]50%烟嘧磺隆·甲基磺草酮·氯氟吡氧乙酸异辛酯水分散粒剂的推荐用量为97.5-195 g a.i./hm^2。施药28 d后对杂草总体防效可高达98.17%。[结论]50%烟嘧磺隆·甲基磺草酮·氯氟吡氧乙酸异辛酯水分散粒剂能够有效防除玉米田杂草并对玉米具有较好的安全性。展开更多
Chlorosulfonyl-containing pyrazolone azo compounds (2a, 2b) have been prepared by reaction of the corresponding sodium sulfonate (1a, 1b) with thionyl chloride in the presence of a catalytic quantity of N,Ndimethylfor...Chlorosulfonyl-containing pyrazolone azo compounds (2a, 2b) have been prepared by reaction of the corresponding sodium sulfonate (1a, 1b) with thionyl chloride in the presence of a catalytic quantity of N,Ndimethylformamide in dry benzene. The effects of reaction temperature, time, catalyst and solvent amount on the yield of 2a and 2b were investigated. The results show that chlorination of 1a and 1b under optimal conditions gives 2a and 2b in 95.5% and 99.2% yield respectively. The given method is facile and suitable for large-scale synthesis.展开更多
文摘[目的]为明确50%烟嘧磺隆·甲基磺草酮·氯氟吡氧乙酸异辛酯水分散粒剂对夏玉米田杂草的防效及对玉米的安全性。[方法]采用茎叶喷雾施药,定期调查的方法进行田间药效试验。[结果]50%烟嘧磺隆·甲基磺草酮·氯氟吡氧乙酸异辛酯水分散粒剂的推荐用量为97.5-195 g a.i./hm^2。施药28 d后对杂草总体防效可高达98.17%。[结论]50%烟嘧磺隆·甲基磺草酮·氯氟吡氧乙酸异辛酯水分散粒剂能够有效防除玉米田杂草并对玉米具有较好的安全性。
文摘Chlorosulfonyl-containing pyrazolone azo compounds (2a, 2b) have been prepared by reaction of the corresponding sodium sulfonate (1a, 1b) with thionyl chloride in the presence of a catalytic quantity of N,Ndimethylformamide in dry benzene. The effects of reaction temperature, time, catalyst and solvent amount on the yield of 2a and 2b were investigated. The results show that chlorination of 1a and 1b under optimal conditions gives 2a and 2b in 95.5% and 99.2% yield respectively. The given method is facile and suitable for large-scale synthesis.
