Kao系列桶混助剂的增效作用及其增效机制

摘要

Both field and greenhouse tests confirmed that the tank mixed adjuvant of KAO ADJUVENTS A-134 and A-145 could dramatically increase the control effects of several herbicides and insecticides respectively. Mixed with these adjuvants, it’s possible to reduce the amounts of pesticides by more than1/3 of normal usages with the same effects, and to have better rain-fastness as well.Compared with the normal solutions, both of the surface tension and interfacial tension of the solution with these adjuvants were obviously decreased which caused the higher wettability and spreadability. The cuticle penetration and stoma penetration of the solutions were significantly increased after mixed with these adjuvants. The outstanding synergism of these tank mixed adjuvants came from their better wetting and penetrating performance simultaneously.%室内外试验结果证明，桶混助剂KAO ADJUVANT A-134和KAO ADJUVANT A-145分别对不同除草剂和杀虫剂具有显著的增效作用，平均可以减少农药使用量三分之一以上。同时，使用助剂后可显著提高耐雨水冲刷的能力。比较添加助剂前后各药剂润湿性能和渗透性能，发现添加这类桶混助剂能显著降低药剂的表面张力和界面张力，使药剂在叶面的铺展性和润湿性更好。添加助剂后，药剂在植物角质膜和气孔渗透方面的性能均显著增加。同时提高润湿性和渗透性是该系列助剂具有显著增效作用的主要原因。