美国昆虫学家埃德加·肖威最近用一种真空吸尘器来消灭草莓上的多种害虫,取得了非常明显的生态和经济效益。这种新发明的真空吸尘器安装在拖拉机上,由引擎带动工作,一次可覆盖四排草莓畦,以每小时30英里的速度将叶片上的多种害虫吸入,尔后被高速风扇吹死,残骸自由落地。使用真 US entomologist Edgar Shaw recently used a vacuum cleaner to eliminate a variety of pests on strawberries and achieved significant ecological and economic benefits. The newly invented vacuum cleaner is mounted on a tractor and driven by an engine that covers four rows of strawberry jelly at a time, sucking in a variety of pests on the leaves at a rate of 30 miles an hour, then being blown to death by a high-speed fan, free of debris Landing Use true