添加飞防助剂对无人机防治水稻病害的影响

Influence of Adding Adjuvants for Aviation Plant Protection on Control Efficacy of Rice Diseases Using Unmanned Aerial Vehicle

[目的]研究添加飞防助剂对农药雾滴特性和无人机防治水稻纹枯病和白叶枯病的影响。[方法]采用水敏纸检测雾滴性能和田间药效试验。[结果]添加飞防助剂药液润湿面积增加94.2%,雾滴覆盖率和体积中径由未添加助剂前5.68%、280μm增加至8.58%、339μm,雾滴密度由未添加助剂前71.9个/cm2降低至61.5个/cm2,同时改善了雾滴分布均匀度,田间试验表明添加助剂显著提高水稻病害的防治效果。[结论]添加飞防助剂对提高飞防药效具有重要作用。

[Aims] This paper aims to study the influence of adjuvants on the characteristics of aerial spraying fog drop and the control efficacy of two diseases of rice. [Methods] Droplet test（using water sensitive paper） and field efficacy trial were combined to study. [Results] Despite droplet density reduced to 61.5 drop/cm2 from 71.9 drop/cm2 after adding adjuvant for aviation plant protection, the wetted area of pesticide solution increased by 94.2%, while droplet spraying coverage and volume median diameter（VMD） increased to 8.58%, 339 μm from 5.68%, 280 μm and uniformity of droplet distribution was improved, eventually the control effect was improved against rice sheath blight and bacterial blight of rice significantly. [Conclusions] Adding adjuvants is important to enhance the control efficacy of unmanned aerial vehicle.