Effects of different pesticide adjuvants and synergistic reaction on changes of surface tension

In order to study the effect of pesticide adjuvant on the property of pesticide solution,the surface tension of the solution added with dispersant,wetting agent and their combination were determined by spinning drop method.The results showed that the treatments added with dispersant DC04 and wetting agent WLNO 200 had higher surface activity,the curves of the surface tension of the combination treatment and the wetting agent treatment were similar,and the surface tension reached to the lowest when the ratio of the dispersant to the wetting agent was 3∶1,under this ratio the synergistic reaction of the dispersant and the wetting agent was obvious.