针对不同设备设计不同喷液量,飞行参数验证防治效果,从而验证无人机在稻田全程应用的可能性,旨在探索2种小型多旋翼植保无人机低空喷洒在整个水稻生长时期病虫草害防治过程中的防效。结果表明:当喷洒水田封闭式除草剂的喷洒量为10650、1...针对不同设备设计不同喷液量,飞行参数验证防治效果,从而验证无人机在稻田全程应用的可能性,旨在探索2种小型多旋翼植保无人机低空喷洒在整个水稻生长时期病虫草害防治过程中的防效。结果表明:当喷洒水田封闭式除草剂的喷洒量为10650、15000 mL/hm^2,其对杂草的株防效与鲜重防效与人工电动喷雾相近。在病虫害的防治试验中,使用推荐用量且喷洒量为10650、15000 mL/hm^2时,以及使用70%推荐用量(减量30%)且喷洒量为15000 m L/hm^2时,防治效果均与人工电动喷雾器无显著差异。通过验证,选择合适的药剂,配合科学的喷洒参数,可在保证药效的前提下减少农药使用量。多旋翼植保无人机在水稻田有进行大面积全程飞防植保应用有广阔的前景。展开更多
In the paper, the ultra-low-volume spraying of oil formulation of Beauveria bassiana was used to control Dendrolimus punctatus. The results indoor and outdoor showed that conidial powder of B. bassiana had a good cont...In the paper, the ultra-low-volume spraying of oil formulation of Beauveria bassiana was used to control Dendrolimus punctatus. The results indoor and outdoor showed that conidial powder of B. bassiana had a good control effect on D.punctatus with mortality of more than 80%, and started appearing white cadaver on the sixth day after spraying with concentrations of 200*!mL·(667*!m 2) -1 and the mortality reached 70.9% on the seventh day. Adding Femalerate in oil formulation had a significant addition toxicity effect, and the more the density of Fenvalerate,the more is the mortality of D.punctatus, and they attained death peak on the fifth day after spraying with Femalerate of 0.4*!mL·(667*!m 2) -1, and mortality attained 96.1% after fifteen days. There were the most droplet at a spraying distance of 4*!m, and effective spray width was from 2*!m to 6*!m with mortality of more than 85%, and mortality of pests were positively relative with quantities of droplet.展开更多
文摘针对不同设备设计不同喷液量,飞行参数验证防治效果,从而验证无人机在稻田全程应用的可能性,旨在探索2种小型多旋翼植保无人机低空喷洒在整个水稻生长时期病虫草害防治过程中的防效。结果表明:当喷洒水田封闭式除草剂的喷洒量为10650、15000 mL/hm^2,其对杂草的株防效与鲜重防效与人工电动喷雾相近。在病虫害的防治试验中,使用推荐用量且喷洒量为10650、15000 mL/hm^2时,以及使用70%推荐用量(减量30%)且喷洒量为15000 m L/hm^2时,防治效果均与人工电动喷雾器无显著差异。通过验证,选择合适的药剂,配合科学的喷洒参数,可在保证药效的前提下减少农药使用量。多旋翼植保无人机在水稻田有进行大面积全程飞防植保应用有广阔的前景。
文摘In the paper, the ultra-low-volume spraying of oil formulation of Beauveria bassiana was used to control Dendrolimus punctatus. The results indoor and outdoor showed that conidial powder of B. bassiana had a good control effect on D.punctatus with mortality of more than 80%, and started appearing white cadaver on the sixth day after spraying with concentrations of 200*!mL·(667*!m 2) -1 and the mortality reached 70.9% on the seventh day. Adding Femalerate in oil formulation had a significant addition toxicity effect, and the more the density of Fenvalerate,the more is the mortality of D.punctatus, and they attained death peak on the fifth day after spraying with Femalerate of 0.4*!mL·(667*!m 2) -1, and mortality attained 96.1% after fifteen days. There were the most droplet at a spraying distance of 4*!m, and effective spray width was from 2*!m to 6*!m with mortality of more than 85%, and mortality of pests were positively relative with quantities of droplet.
