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飞翔的昆虫对农药雾滴不只是被动的接收靶体,它对不同粒径的雾滴有一定的选择捕获能力。作者在试验风洞中初步研究了粗雾滴、细雾滴两种喷雾方法在模拟昆虫靶标和吊飞活体粘虫靶标上沉积分布情况。结果表明:靶体形状对雾滴沉积有很大影响,雾滴在尖细靶标(触角、腿)上沉积量(μg/cm~2)远高于粗大靶标(体);农药雾滴在吊飞昆虫上的沉积量一半在翅上;雾滴粒径对其在靶标上沉积分布有很大影响,同样施药剂量下,吹雾法(43μm)药剂在吊飞粘虫上的沉积量是常规喷雾法(181μm)的1.49倍。
Flying insects on pesticide droplets not only passively receive the target, it has different particle size droplets have a selective capture ability. In the experimental wind tunnel, the authors initially studied the deposition and distribution of coarse spray and fine spray on the targets of the simulated insects and live-borne live-on armyworms. The results show that the shape of the target has a great effect on the droplet deposition. The droplet deposition (μg / cm ~ 2) on the tapered target (antenna, leg) is much higher than that of the coarse target The amount of sediment on flying insects was half on the wing. The droplet size had a great influence on its deposition on the target. Under the same application dose, the amount of sediment sprayed on the flying insect was 1.49 times of the conventional spray method (181μm).