“水到渠成”农用增效剂对化学农药展布性和病虫害防效的影响

Effects of Shuidaoqucheng agricultural synergist on the distribution and control of pesticides

【目的】为明确“水到渠成”农用增效剂对化学农药展布性和田间防效的影响,从而指导其科学使用。【方法】对“水到渠成”农用增效剂加入化学农药后,药液表面张力、静态接触角、雾化与沉降效果,以及田间病虫害防效进行了研究。【结果】增效剂可有效降低药剂的表面张力,减小药液的静态接触角,并且在单位时间内药液的接触角下降幅度较大;增效剂可显著增加药液的扩散性能和在载体表面的沉积量;田间施用可增加药液对病虫害的防效,使240 g/L噻呋酰胺悬浮剂和200 g/L氯虫苯甲酰胺悬浮剂对水稻纹枯病和稻纵卷叶螟的防效分别增加了17.41%和10.23%。【结论】“水到渠成”农用增效剂可有效提高化学药剂的展布性,提高其对田间病虫害的防效。

[Objective]This study was conducted to clarify the effect of Shuidaoqucheng agricultural synergists on the distribution and field control of pest,so as to guide the scientific use.[Method]The surface tension,static contact angle,atomization and deposition,and the control effect of pesticides on rice diseases and pests after the agricultural synergist being added into the pesticides were studied.[Result]The agricultural synergist could effectively reduce the surface tension and the static inoculation angle,which decreased greatly in the unit time of the pesticides.Moreover,the agricultural synergist could significantly increase the diffusion property and deposition amount of the pesticides on the carrier surface.Results of field application showed that the agricultural synergist could increase the control effect of pesticides on pests and diseases,and the control effect of thifluzamide 240 g/L SC and chlorantraniliprole 200 g/L SC on rice sheath blight and rice leaf roller was increased by 17.41%and 10.23%,respectively.[Conclusion]The Shuedaoqucheng agricultural synergists can effectively improve the distribution of chemical pesticides as well as the control effects of them on diseases and pests in the field.