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　　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(shù)??(shu)、楊??(yang)樹(shù)??(shu)、柳?(liu)樹(shù)??(shu)、樺?(hua)樹(shù)??(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)??。??　　人??(ren)吸?(xi)入??(ru)花??(hua)粉??(fen)后??(hou)??，產(chǎn)??(chan)生??(sheng)過(guò)??(guo)敏??(min)反??(fan)應(yīng)??(ying)即?(ji)為??(wei)花??(hua)粉??(fen)過(guò)??(guo)敏??(min)癥??(zheng)??，它?(ta)主??(zhu)要?(yao)是??(shi)特?(te)應(yīng)??(ying)性??(xing)體??(ti)質(zhì)??(zhi)的??(de)患??(huan)者??(zhe)被??(bei)花??(hua)粉??(fen)致?(zhi)敏?(min)后??(hou)??，引??(yin)起??(qi)的??(de)一??(yi)系??(xi)列??(lie)病??(bing)理??(li)生??(sheng)理??(li)過(guò)??(guo)程??(cheng)??。??花??(hua)粉??(fen)過(guò)??(guo)敏??(min)癥秘(zheng)是??(shi)變??(bian)態(tài)??(tai)反??(fan)應(yīng)??(ying)科??(ke)常??(chang)見(jiàn)??(jian)疾??(ji)病??(bing)之??(zhi)一??(yi)??，發(fā)??(fa)病??(bing)率??(lv)呈??(cheng)逐??(zhu)年??(nian)上??(shang)升??(sheng)的??(de)趨??(qu)勢(shì)??(shi)??，嚴(yán)??(yan)重??(zhong)影??(ying)響??(xiang)人??(ren)們??(men)的??(de)健??(jian)康??(kang)和??(he)生??(sheng)活??(huo)??。。