植保无人机在甘蔗害虫防治上的应用效果

由于甘蔗生长后期植株高大,存在手工操作难、作业效率低、喷药风险大的问题,为探索植保无人机在甘蔗害虫防治上的应用效果,2018年在云南陇川进行了试验示范。结果表明,在甘蔗根施农药防治的基础上,在蓟马大发生期,选用植保无人机喷33%氯氟·吡虫啉SC 240 mL/hm2对甘蔗蓟马的防治效果较好,与防治前相比,相对防效为83.5%,与根施70%噻虫嗪ZF 240 mL/hm2相比,相对防效为67.6%;在甘蔗螟虫蛀茎危害初期,选用植保无人机喷40%氯虫·噻虫嗪WG 240 g/hm2对甘蔗螟虫的防治效果显著,与根施4%吡虫·毒死蜱GR 30 kg/hm2相比,对螟害株率的相对防效91.2%,对螟害节率的相对防效为96.1%,与根施2%吡虫啉GR+0.4%氯虫苯甲酰胺GR 30 kg/hm2+30 kg/hm2相比,对螟害株率的相对防效52.0%,对螟害节率的相对防效53.8%。说明植保无人机进行甘蔗害虫防治上具有作业效率高、对甘蔗安全和防效好的优势。

Application Effects of Unmanned Aerial Vehicle on Sugarcane Pest Control in Sugarcane Field

Due to the large plant size of sugarcane in the later stages of growth,there are problems of difficult manual operation,low operating efficiency,and high spraying risks.In order to explore the application effect of plant protection drones on sugarcane pest control,a test demonstration was conducted in Longchuan,Yunnan in 2018.The results showed that the control effect of 33%chlorofluoro·imidacloprid SC 240 mL/hm2 on sugarcane thrips was better on the basis of applying pesticide to sugarcane roots,The relative control effect was 83.5%compared with before control,The relative control effect reached 67.6%compared with the root application of 70%thiamethoxam ZF 240 mL/hm2;In the early stage of the damage of sugarcane stem borer,there was an significant control effect on sugarcane borer by spraying 40%chlorpromazine·thiamethoxam WG 240 g/hm2 by unmanned aerial vehicle(UAV).The relative control effect on the rate of sugarcane stem borer was 91.2%compared with root application of 4%imidacloprid·chlorpyrifos GR 30 kg/hm2,and the relative control effect on the rate of damaged nodes of the sugarcane stem borer was 96.1%.Compared with root application of 2%imidacloprid GR 30 kg/hm2+0.4%chlorobenzamide GR 30 kg/hm2,the relative control effect on the rate of sugarcane stem borer was 52.0%,and the relative control effect on the rate of damaged nodes of the sugarcane stem borer got 53.8%.The applications of UAV to sugarcane pest control in sugarcane field had the superiorities of good control effects,no damages to sugarcane and high working efficiency.