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利用自制的昆虫飞翔实验风洞 ,系统观测了在风洞条件下粘虫在不同流速实验气流中的起飞行为与飞翔行为。结果表明 ,微风能刺激粘虫起飞 ,试虫表现明显的偏爱迎风 (或稍偏一点角度 )起飞的习性 ,飞翔时亦多采取迎风 (或稍偏一点角度 )的姿势。试虫在气流中的实际位移是昆虫飞翔位移与气流位移的矢量和。当气流速度小于 2 m/ s时 ,逆风向位移占多数 ;而气流速度为 3～ 4 m/ s时 ,94 .8%的试虫为顺风向位移。
Using self-made insect flying experimental wind tunnel, we systematically observed the take-off behavior and flight behavior of armyworms in the experimental airflow with different flow velocities under wind tunnel conditions. The results showed that the breeze could stimulate the armyworm to take off, and the insects apparently favored the windward (or slightly angled) takeoff habit. They also took more windward (or slightly angled) positions when flying. The actual displacement of insects in the airflow is the vector sum of the insect flight displacement and the airflow displacement. When the air velocity is less than 2 m / s, the reverse wind direction displacement accounts for the majority. When the air velocity is 3 ~ 4 m / s, 94.8% of the insects move downwind.