尼日利亚研究人员发现一种能够杀死蝗虫和蚱蜢的真菌 ,它可能会成为一种更廉价和更安全的农药杀虫剂替代品。尼日利亚伊巴丹国际热带农业研究所的研究人员日前在华盛顿举行的一次会议上说 ,尽管这种真菌不能象化学杀虫剂那样迅速杀死害虫 ,但真菌的效力持续时间长久 ,能够在一 Nigerian researchers have found a fungus that can kill locusts and grasshoppers, which could become a cheaper and safer pesticide alternatives to pesticides. At a conference in Washington held recently by a researcher at the International Institute of Tropical Agriculture in Ibadan, Nigeria, although the fungus does not kill pests as rapidly as chemical insecticides, the effectiveness of the fungus lasts for a long time,