桶混助剂对25%吡唑醚菌酯悬浮剂防治黄瓜靶斑病的调控作用

The Synergistic Effect of Tank-mixing Adjuvants on 25%Pyraclostrobin SC Against Cucumber Target Spot

为了明确桶混助剂对吡唑醚菌酯防治黄瓜靶斑病的调控作用,本研究结合助剂的结构特点,探究了SP-4806、SY-A、SY-B、SY-C等4种桶混助剂对25%吡唑醚菌酯悬浮剂对靶沉积界面性能、黄瓜体内吸收传导性能以及对黄瓜靶斑病防效的影响。试验结果表明,4种助剂均能降低表面张力、接触角,增强润湿渗透性能,促进25%吡唑醚菌酯悬浮剂在黄瓜体内向上传导作用,且助剂SP-4806对25%吡唑醚菌酯悬浮剂在黄瓜体内向下传导具有显著促进作用。4种桶混助剂均不同程度促进25%吡唑醚菌酯悬浮剂对黄瓜靶斑病的防效,其中添加助剂SP-4806处理的防效较25%吡唑醚菌酯悬浮剂显著提高,药后9 d防效分别为76.76%。本研究结果可为桶混助剂对25%吡唑醚菌酯悬浮剂应用于防治黄瓜靶斑病提供参考。

In order to clarify the synergistic effect of adjuvants on pyraclostrobin 25%SC against cucumber target spot,this study investigated the effects of four tank-mixing adjuvants,SP-4806,SY-A,SY-B,and SY-C on the target deposition interface performance,in vivo absorption and transmission performance,and prevention and control of cucumber target spot disease of pyraclostrobin 25%SC,based on the structural characteristics of the additives.The experimental results showed that all four adjuvants could reduce surface tension,contact angle,enhance wetting and permeability,and promote the upward conduction of pyraclostrobin 25%SC in cucumber.Additionally,the adjuvant SP-4806 had a significant promoting effect on the downward conduction of pyraclostrobin 25%SC in cucumber.Four types of bucket mixed additives all promoted the control effect of pyraclostrobin 25%SC on cucumber target spot disease to varying degrees.Among them,the treatment with additives SP-4806 significantly improved the control effect compared to pyraclostrobin 25%SC,and the control effect were 76.76%affer 9 d of treatment,respectively.The results could provide a reference for the application of tank-mixing adjuvants on 25%pyraclostrobin SC in the prevention and control of cucumber target spot disease.