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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??(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??(guo)敏??(min)性??(xing)哮??(xiao)喘?(chuan)的??(de)癥??(zheng)狀??(zhuang)??。??　　花??(hua)粉??(fen)過??(guo)敏??(min)又??(you)叫??(jiao)花??(hua)粉??(fen)癥??(zheng)、枯??(ku)草??(cao)熱?(re)?，主??(zhu)要?(yao)是??(shi)由??(you)于??(yu)對??(dui)植??(zhi)物??(wu)花??(hua)粉??(fen)存??(cun)在??(zai)過??(guo)敏??(min)現(xiàn)??(xian)象??(xiang)?，并??(bing)對??(dui)眼?(yan)、鼻??(bi)、呼??(hu)吸??(xi)道??(dao)、皮??(pi)膚?(fu)等??(deng)產(chǎn)??(chan)生??(sheng)影?(ying)響??(xiang)??。??該??(gai)類??(lei)疾??(ji)病??(bing)的??(de)過??(guo)敏??(min)原??(yuan)是??(shi)花??(hua)粉??(fen)?，過?(guo)敏??(min)原??(yuan)傳??(chuan)播??(bo)的??(de)媒??(mei)介??(jie)主??(zhu)要??(yao)是?(shi)風(fēng)??(feng)??。在?(zai)我??(wo)國??(guo)?，不??(bu)同??(tong)地??(di)區(qū)??(qu)的??(de)氣?(qi)傳??(chuan)花??(hua)粉??(fen)植??(zhi)物??(wu)季??(ji)節(jié)??(jie)分??(fen)布?(bu)特??(te)征?(zheng)因??(yin)氣?(qi)候??(hou)條??(tiao)件??(jian)、植??(zhi)物??(wu)的??(de)物??(wu)候??(hou)條??(tiao)件??(jian)特??(te)征??(zheng)不??(bu)同??(tong)?，存??(cun)在??(zai)一?(yi)定??(ding)差??(cha)異??(yi)??。對??(dui)于??(yu)北??(bei)京??(jing)來??(lai)說??(shuo)?，氣??(qi)傳??(chuan)花??(hua)粉??(fen)植??(zhi)物??(wu)的??(de)盛?(sheng)花??(hua)期??(qi)主?(zhu)要??(yao)分??(fen)為??(wei)2個??(ge)高??(gao)峰??(feng)期??(qi)?，那??(na)么??(me)花??(hua)粉??(fen)過??(guo)敏??(min)的??(de)流??(liu)行??(xing)也?(ye)就??(jiu)相?(xiang)應(yīng)??(ying)存??(cun)在??(zai)兩??(liang)個??(ge)高??(gao)發(fā)??(fa)期??(qi)??。。