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　　三九養(yǎng)生堂記者 鄧肯·蓋伊 報(bào)道

精彩|　　昆??(kun)蟲??(chong)為??(wei)什??(shen)么?(me)要??(yao)遷??(qian)飛??(fei)？??這??(zhe)其??(qi)實(shí)??(shi)是??(shi)一??(yi)種??(zhong)生?(sheng)存??(cun)策??(ce)略??(lve)??。??簡(jiǎn)??(jian)單??(dan)來?(lai)說??(shuo)?，當(dāng)??(dang)一??(yi)個(gè)??(ge)地??(di)方??(fang)食??(shi)物?(wu)開?(kai)始??(shi)匱??(kui)乏??(fa)?，昆??(kun)蟲??(chong)就??(jiu)會(huì)??(hui)集??(ji)體??(ti)遷??(qian)飛??(fei)?，開?(kai)拓??(tuo)新??(xin)的??(de)食??(shi)物??(wu)來??(lai)源??(yuan)??。以??(yi)2019—2020年??(nian)危??(wei)害??(hai)全??(quan)球??(qiu)農(nóng)??(nong)業(yè)??(ye)的??(de)沙??(sha)漠??(mo)蝗??(huang)蟲??(chong)為??(wei)例??(li)?，它??(ta)們??(men)最??(zui)初??(chu)從??(cong)非??(fei)洲??(zhou)出??(chu)發(fā)??(fa)?，一??(yi)路??(lu)遷??(qian)飛??(fei)到??(dao)兩??(liang)河??(he)流??(liu)域??(yu)、南??(nan)亞??(ya)等??(deng)地??(di)?，數(shù)??(shu)量??(liang)龐??(pang)大??(da)?，速??(su)度??(du)很??(hen)快??(kuai)?，為??(wei)害??(hai)甚??(shen)巨?(ju)??。來??(lai)自??(zi)聯(lián)??(lian)合??(he)國??(guo)糧??(liang)農(nóng)??(nong)組??(zu)織??(zhi)的??(de)監(jiān)??(jian)測(cè)??(ce)數(shù)??(shu)據(jù)??(ju)顯??(xian)示??(shi)?，每??(mei)平??(ping)方??(fang)公??(gong)里??(li)中??(zhong)遷??(qian)飛?(fei)的??(de)沙??(sha)漠??(mo)蝗??(huang)蟲?(chong)?，一??(yi)天??(tian)就??(jiu)可??(ke)以??(yi)吃??(chi)掉??(diao)3.5萬??(wan)人??(ren)的??(de)口??(kou)糧??(liang)??。　　昆?(kun)蟲??(chong)的??(de)體??(ti)積??(ji)通??(tong)常??(chang)很??(hen)小?(xiao)??，而??(er)且??(qie)絕??(jue)大??(da)部??(bu)分?(fen)習(xí)??(xi)慣??(guan)于??(yu)夜??(ye)間??(jian)遷??(qian)飛??(fei)、白??(bai)天??(tian)休??(xiu)息??(xi)??，這??(zhe)種??(zhong)晝??(zhou)伏?(fu)夜??(ye)出??(chu)的??(de)習(xí)?(xi)性??(xing)??，使??(shi)得??(de)人??(ren)類??(lei)很??(hen)難??(nan)直??(zhi)接?(jie)觀??(guan)測(cè)?(ce)到??(dao)遷??(qian)飛??(fei)現(xiàn)??(xian)象??(xiang)??。??那??(na)么??(me)??，科??(ke)學(xué)??(xue)家??(jia)是??(shi)怎??(zen)么?(me)知??(zhi)道?(dao)和??(he)認(rèn)??(ren)識(shí)??(shi)昆??(kun)蟲秘(chong)遷??(qian)飛??(fei)現(xiàn)??(xian)象??(xiang)的??(de)呢??(ne)？??

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