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　　若??(ruo)空??(kong)氣??(qi)中??(zhong)花??(hua)粉??(fen)濃??(nong)度??(du)較??(jiao)高??(gao)??，花??(hua)粉??(fen)可??(ke)能??(neng)會(huì)??(hui)沉?(chen)積??(ji)在??(zai)下??(xia)呼??(hu)吸?(xi)道??(dao)??，導(dǎo)??(dao)致??(zhi)發(fā)??(fa)作?(zuo)性??(xing)喘??(chuan)息??(xi)、咳??(ke)嗽??(sou)、胸??(xiong)悶??(men)等??(deng)過(guò)??(guo)敏??(min)性??(xing)哮??(xiao)喘??(chuan)的??(de)癥??(zheng)狀??(zhuang)??。??　　風(fēng)??(feng)媒??(mei)花??(hua)粉??(fen)指??(zhi)借??(jie)助??(zhu)風(fēng)?(feng)力??(li)傳??(chuan)播??(bo)授??(shou)粉??(fen)的??(de)花??(hua)粉?(fen)??，一??(yi)般??(ban)花??(hua)粉??(fen)粒??(li)小??(xiao)、質(zhì)??(zhi)輕??(qing)、量??(liang)多??(duo)??，如?(ru)柏??(bai)樹??(shu)、楊??(yang)樹??(shu)、柳?(liu)樹??(shu)、樺?(hua)樹??(shu)、梧??(wu)桐??(tong)等??(deng)；它?(ta)的??(de)特??(te)點(diǎn)??(dian)是??(shi)花??(hua)型??(xing)較??(jiao)小?(xiao)、色??(se)淺??(qian)、無(wú)??(wu)香??(xiang)味??(wei)??，數(shù)??(shu)量??(liang)多??(duo)??，花??(hua)粉??(fen)傳??(chuan)播??(bo)面?(mian)積?(ji)很??(hen)廣??(guang)、在?(zai)空??(kong)氣??(qi)中??(zhong)停??(ting)留??(liu)時(shí)??(shi)間??(jian)長(zhǎng)??(chang)??。??CWUEDAUBYUqibao666888　　ruo ??(ruo)kong ??(kong)qi ??(qi)zhong ??(zhong)hua ??(hua)fen ??(fen)nong ??(nong)du ??(du)jiao ??(jiao)gao ??(gao)??，hua ??(hua)fen ??(fen)ke ??(ke)neng ??(neng)hui ??(hui)chen ?(chen)ji ??(ji)zai ??(zai)xia ??(xia)hu ??(hu)xi ?(xi)dao ??(dao)??，dao ??(dao)zhi ??(zhi)fa ??(fa)zuo ?(zuo)xing ??(xing)chuan ??(chuan)xi ??(xi)、ke ??(ke)sou ??(sou)、xiong ??(xiong)men ??(men)deng ??(deng)guo ??(guo)min ??(min)xing ??(xing)xiao ??(xiao)chuan ??(chuan)de ??(de)zheng ??(zheng)zhuang ??(zhuang)??。??　　feng ??(feng)mei ??(mei)hua ??(hua)fen ??(fen)zhi ??(zhi)jie ??(jie)zhu ??(zhu)feng ?(feng)li ??(li)chuan ??(chuan)bo ??(bo)shou ??(shou)fen ??(fen)de ??(de)hua ??(hua)fen ?(fen)??，yi ??(yi)ban ??(ban)hua ??(hua)fen ??(fen)li ??(li)xiao ??(xiao)、zhi ??(zhi)qing ??(qing)、liang ??(liang)duo ??(duo)??，ru ?(ru)bai ??(bai)shu ??(shu)、yang ??(yang)shu ??(shu)、liu ?(liu)shu ??(shu)、hua ?(hua)shu ??(shu)、wu ??(wu)tong ??(tong)deng ??(deng)；ta ?(ta)de ??(de)te ??(te)dian ??(dian)shi ??(shi)hua ??(hua)xing ??(xing)jiao ??(jiao)xiao ?(xiao)、se ??(se)qian ??(qian)、wu ??(wu)xiang ??(xiang)wei ??(wei)??，shu ??(shu)liang ??(liang)duo ??(duo)??，hua ??(hua)fen ??(fen)chuan ??(chuan)bo ??(bo)mian ?(mian)ji ?(ji)hen ??(hen)guang ??(guang)、zai ?(zai)kong ??(kong)qi ??(qi)zhong ??(zhong)ting ??(ting)liu ??(liu)shi ??(shi)jian ??(jian)chang ??(chang)??。??