众所周知,人类的天敌——蝗虫,其实至今都远未在地球上灭绝。特别是在非洲,这些年来蝗虫尤为猖撅。上世纪中叶,阿尔及利亚曾出现过有史以来最大的一次蝗灾,一共200亿只蝗虫组成的蝗群犹如一片会飞的乌云,密密麻麻地覆盖住400平方公里的田野,每天吞食的食物数以万吨计!蝗虫的求食本领大得令人吃惊它们不仅吃农作物,而且在找不到农作物时也会吃羊身上的毛、稻草屋顶,甚至沾过手汗的农具的木质手柄,如果连 It is known to all that natural enemies of human beings, locusts, have so far never been extinct on Earth. Especially in Africa, locusts have been particularly rampant for years. In the middle of the last century, the largest locust plague ever occurred in Algeria. A total of 20 billion locust swarms are flying like dark clouds, densely covering 400 square kilometers of fields. Tons of tons of food swallowed daily The ability of locusts to seek food is astounding. Not only do they eat their crops, but they also eat the wool, the straw roof, and the wooden handles of the tools that sweat their hands when they can not find the crops.