摘要
针对现在烟·硝·莠去津可分散油悬浮剂(OD)配方大多存在热储不稳定、析油率高以及存在药害等问题,通过大量助剂筛选、工艺优化、室外田间药效等试验,研制出对玉米无药害、高稳定性的32％烟·硝·莠去津OD配方.其最优选配方(质量分数):烟嘧磺隆4％、硝磺草酮8％、莠去津20％、分散剂SP-OF3498D 3％、乳化剂SP-OF3473E 15％、黏度调节剂有机膨润土 OR-X 0.5％、pH调节剂柠檬酸1％、防沉降稳定剂尿素1％、安全剂双苯唑酸2％、结构稳定剂WD012％、油酸甲酯补足.该配方分散稳定性好,粒径在5 μm以下,热储及低温稳定性好,其他各项指标也满足OD的标准,且配方对玉米不存在药害,安全性高.
Abstract
In view of the problems of unstable hot storage,high oil separation rate and phytotoxicity in most of the current nicosulfuron·mesotrione·atrazine OD formulas,a nicosulfuron·mesotrione·atrazine 32％OD formula with no phytotoxicity to maize and high stability was developed through a large number of adjuvant screening,process optimization,outdoor field efficacy and other tests.The most preferred formula(mass fraction)was:4％nicosulfuron,8％mesotrione,20％atrazine,3％dispersant SP-OF3498D,15％emulsifier SP-OF3473E,0.5％viscosity modifier organic bentonite OR-X,1％pH regulator citric acid,1％anti-settling stabilizer urea,2％safener isoxadifen-ethyl,2％structural stabilizer WD01,and made up with methyl oleate.The formula has good dispersion stability,particle size below 5 μm,good thermal storage and low temperature stability,and other indicators also met the OD standards.In addition,the formula had no phytotoxicity to maize and high safety.
维普
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