摘要
通过湿法砂磨研制15％溴酰·茚虫威悬浮剂(SC),并筛选适宜的润湿分散剂、增稠剂、防冻剂、消泡剂和稳定剂,以及对SC理化性能进行测定,获得了 15％溴酰·茚虫威SC优选配方:溴氰虫酰胺3.0％、茚虫威12.0％、SP-3060 5.0％、润湿分散剂A 2.0％、硅酸镁铝1.0％、稳定剂0.02％、黄原胶0.15％、乙二醇3.0％、有机硅消泡剂0.5％、去离子水补足至100％.该SC经冷、热储后,外观稳定,无分层、结块等现象,悬浮率达97％以上,分散性好.稀释1600倍后,表面张力≤27.57 mN/m,接触角(聚四氟乙烯板法)≤90.83°,叶面铺展性好.在270 g/hm2的制剂用量下,药后7 d对小菜蛾的防效达92.11％,药效明显优于2个单剂的药效.该产品各项指标均符合SC的质量技术指标,田间试验结果表明对甘蓝小菜蛾的防治效果好,可以大面积推广使用.
Abstract
Cyantraniliprole·indoxacarb 15％suspension concentrate(SC)was prepared by wet grinding,and suitable wetting and dispersing agents,thickeners,antifreeze agents,defoamers and stabilizers were screened.The physical and chemical properties of SC were determined,and the optimal formula of cyantraniliprole·indoxacarb 15％SC was obtained,which was 3.0％cyantraniliprole,12.0％indoxacarb,5.0％SP-3060,2.0％wetting and dispersing agent A,1.0％magnesium aluminum silicate,0.02％stabilizer,0.15％xanthan gum,3.0％ethylene glycol,0.5％organosilicon defoamer,and deionized water was added to 100％.After cold and hot storage,the SC had a stable appearance,no stratification,agglomeration and other phenomena,and a suspension rate of more than 97％,with good dispersibility.After dilution 1600 times,the surface tension was ≤27.57 mN/m,the contact angle(polytetrafluoroethylene plate method)was≤90.83°,and the leaf surface spreading was good.At a dosage of 270 g/ha,the control effect on diamondback moth reached 92.11％7 days after application,which was significantly better than that of 2 single doses.All indicators of this product meet the quality and technical indicators of SC.The field test results show that it has a good control effect on diamondback moth and can be promoted for large-scale use.
维普
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