还记得小时候,我们最喜欢追逐蜻蜓了,尤其在雨前,常能见到大群的蜻蜓低低地飞旋,那时候总能很轻松地捉到一只。当时常听老人们念叨:“蜻蜓低飞,不风即雨。”这是什么原因呢?昨日,某大学农学院昆虫学教授史树森给记者解释说:“这是由蜻蜓的食物决定的。”下雨之前,气压低,空气湿度大,昆虫多在低空浮游,蜻蜓为了觅食,往往在离地二三米处的低空飞行,所以也成了有风雨的征兆。 Remember that when we were young, we liked to chase dragonflies most. Especially before the rain, we could often see a large group of dragonflies swirling in low altitudes. At that time, it was always easy to catch a dragonfly. Yesterday, the University of Agriculture entomology professor Shushu Sen explained to reporters: "This is determined by the food dragonfly Before the rain, the pressure is low, the air humidity, insects and more in low altitude, dragonflies in order to seek food, often at a low altitude 23 meters away from the ground flight, it has become a sign of wind and rain.