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　　三九養(yǎng)生堂記者 鄧肯·蓋伊 報(bào)道

精彩|　　探??(tan)明??(ming)昆?(kun)蟲(chóng)??(chong)的??(de)遷??(qian)飛??(fei)規(guī)?(gui)律??(lv)、遷?(qian)飛??(fei)通??(tong)道??(dao)等??(deng)特??(te)點(diǎn)??(dian)??，蟲(chóng)??(chong)害??(hai)防??(fang)治??(zhi)就??(jiu)變??(bian)得??(de)更??(geng)加??(jia)高??(gao)效??(xiao)??。??比??(bi)如??(ru)??，在??(zai)遷??(qian)出??(chu)地?(di)加??(jia)大??(da)防??(fang)治??(zhi)力??(li)度??(du)??，能??(neng)減??(jian)少??(shao)昆??(kun)蟲(chóng)??(chong)遷??(qian)出??(chu)數(shù)??(shu)量??(liang)??，這??(zhe)樣??(yang)它??(ta)們??(men)在?(zai)遷??(qian)入??(ru)地??(di)造??(zao)成??(cheng)的??(de)危??(wei)害??(hai)就??(jiu)會(huì)??(hui)降??(jiang)低??(di)??，或??(huo)可?(ke)維??(wei)持??(chi)在??(zai)可??(ke)控??(kong)范??(fan)圍??(wei)內(nèi)??(nei)??。針??(zhen)對(duì)??(dui)棉??(mian)鈴?(ling)蟲(chóng)??(chong)的??(de)防??(fang)治??(zhi)就??(jiu)是??(shi)其??(qi)中??(zhong)的??(de)典??(dian)型??(xing)??。在??(zai)探??(tan)明??(ming)渤?(bo)海?(hai)灣??(wan)遷??(qian)飛??(fei)通??(tong)道??(dao)后??(hou)??，科??(ke)學(xué)??(xue)家?(jia)們??(men)進(jìn)??(jin)一??(yi)步??(bu)了??(le)解??(jie)了??(le)棉??(mian)鈴??(ling)蟲(chóng)??(chong)遷??(qian)飛??(fei)路??(lu)線??(xian)??，它?(ta)們??(men)每??(mei)年??(nian)5—6月??(yue)從??(cong)華??(hua)北??(bei)平??(ping)原??(yuan)起??(qi)飛??(fei)??，一??(yi)路??(lu)翻?(fan)山??(shan)跨??(kua)海??(hai)到?(dao)達(dá)??(da)東??(dong)北??(bei)平?(ping)原??(yuan)??，在??(zai)9—10月?(yue)又??(you)從??(cong)東??(dong)北??(bei)平??(ping)原??(yuan)回??(hui)到??(dao)華??(hua)北??(bei)平??(ping)原??(yuan)???？??(ke)見(jiàn)??(jian)??，華??(hua)北??(bei)平??(ping)原??(yuan)是??(shi)重??(zhong)要??(yao)的??(de)防??(fang)治??(zhi)地??(di)??，科?(ke)學(xué)??(xue)家??(jia)們??(men)在??(zai)這??(zhe)里??(li)種??(zhong)植??(zhi)抗??(kang)蟲(chóng)??(chong)棉??(mian)??，減??(jian)少??(shao)棉??(mian)鈴??(ling)蟲(chóng)??(chong)數(shù)??(shu)量??(liang)??，遷??(qian)出??(chu)的??(de)棉??(mian)鈴??(ling)蟲(chóng)?(chong)少??(shao)了??(le)??，遷??(qian)入??(ru)的??(de)自?(zi)然??(ran)也??(ye)就??(jiu)少??(shao)了??(le)??。

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