多旋翼植保无人机在小麦田的雾滴分布及对小麦蚜虫的防治效果初探

Study on Droplet Distribution of Multi Rotor Unmanned Aerial Vehicle(UAV) in Wheat Field and Its Control Effect against Wheat Aphid

在小麦蚜虫的防治中应用了小型多旋翼植保无人机进行低空喷洒。研究结果表明,小型多旋翼植保无人机低空喷洒,喷雾雾滴粒径在小麦植株穗部、中部(倒二叶)和下部(倒三叶)差异较小,但添加助剂后雾滴粒径分布均匀性明显提升;在小麦植株的沉积分布密度为穗部>中部(倒二叶)>下部(倒三叶),其中添加助剂后沉积密度可提升3～4倍,沉积分布均匀性也显著改善。植保无人机选择不同用量药剂和助剂兑水对小麦蚜虫进行喷雾试验时,7d后整体防治效果可达到90%,且添加助剂后防治速效性更佳。总体而言,添加专用助剂有利于提高药剂的沉积密度和分布均匀性,而且雾滴粒径更加稳定,有助于提升防治效果。

The field trials applying eight - rotor UAV spraying against wheat aphids was carried out. The test results showed that the uniformity of droplets was improved significantly by adding adjuvants, with the small variation of spray droplet size among wheat ear, middle （fall two leaves） and bottom （inverted trefoil） . Meanwhile, the droplet density had been enhanced by 3 -4 times by using adjuvants with the downtrend from wheat ear to bottom （inverted trefoil） The control effects using eightrotor UAV against wheat aphids exceeded 90% after 7 days in all six tests at different application ratios of pesticide and adjuvants, and a highest control effect was achieved by adding the adjuvants. In conclusion, the special adjuvants were able to improve the droplet density uniformity and effect control.