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齐齐哈尔小区里的健身器材也没好到哪去,因为漆成黄色的缘故,把手,座椅,都被这些爱好健身的飞虫占领了。
明水的环卫工人身穿的安全背心,本来是为了帮他们在马路上起到警示作用,这下成了飞虫们的集合号。专家说这其实不是小咬
东北林业大学的迟德富教授介绍说,这些飞虫并不是大家常说的小咬,而是一种叫做蚜虫的昆虫,学名同翅目蚜科的有翅蚜虫。跟小咬相比,蚜虫体型更大。
迟德富教授说,家里挡蚊子的纱窗是挡不住小咬的,小咬可以透过纱窗钻到房间里头去,但现在满天飞的蚜虫却因为体型大,所以钻不过去纱窗网。不仅如此,二者还有一个显著区别,小咬会咬人,而且咬人之后,留下一个红点伤口,不容易愈合,还痒挺长时间。但蚜虫不咬人。
蚜虫具有趋黄性,喜欢附在泛黄颜色鲜艳的物体上。农业上也经常利用蚜虫的这个特性,使用粘板防治蚜虫。实际上,蚜虫年年都有,只不过有的年头风大雨多,气温较低,跟市民相遇的机会不大。今年气温条件合适,迁飞繁殖的蚜虫就比较多。
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