上海出入境檢驗檢疫局 汪玲平
茶cha作zuo為wei三san大da飲yin料liao之zhi一yi,被bei視shi為wei健jian康kang飲yin料liao風feng靡mi世shi界jie。但dan隨sui著zhe國guo際ji貿mao易yi的de發fa展zhan,人ren們men生sheng活huo水shui平ping的de提ti高gao,檢jian測ce技ji術shu的de不bu斷duan更geng新xin,茶cha葉ye中zhong農nong藥yao殘can留liu檢jian測ce項xiang目mu的de增zeng加jia,限xian量liang指zhi標biao的de日ri趨qu嚴yan格ge,我wo國guo茶cha葉ye中zhong農nong藥yao殘can留liu問wen題ti日ri益yi突tu出chu,已yi嚴yan重zhong影ying響xiang到dao茶cha葉ye的de出chu口kou。2002年與2001年比,出口到歐盟地區的茶葉減少了35.04%,其主要原因是出口公司難以找到試銷對路的貨源。本文試想從茶葉的源頭抓起,運用HACCPdeyuanlishishiduichayuanguanli,tongguokongzhichayuanzhongnongyaozhongleiheshiyongdenongdu,laijiangdichayezhongnongyaocanliudehanliang,yidadaobuduantigaochayedeweishengzhiliang,weirenmentigongrichangxuyaodejiankangyinliao。
1、什麼是HACCP
就字麵意思來講,HACCP是“危害分析和關鍵控製點(Hazard Analysis &Critical Control Point)”英文首字母的縮寫,它是一個保證食品安全的預防性管理係統,運用食品加工、微生物學、質zhi量liang控kong製zhi和he危wei險xian評ping價jia等deng有you關guan原yuan理li和he方fang法fa,對dui食shi品pin加jia工gong以yi至zhi最zui終zhong食shi用yong產chan品pin等deng過guo程cheng中zhong存cun在zai潛qian在zai性xing的de危wei害hai進jin行xing分fen析xi判pan斷duan,找zhao出chu對dui最zui終zhong產chan品pin質zhi量liang有you影ying響xiang的de關guan鍵jian控kong製zhi環huan節jie,並bing采cai取qu相xiang應ying控kong製zhi措cuo施shi,使shi食shi品pin危wei害hai性xing減jian至zhi最zui低di程cheng度du,從cong而er達da到dao最zui終zhong產chan品pin有you較jiao高gao安an全quan性xing的de目mu的de。
HACCP是一種預防性的管理工具,它包括七個基本原理:(1)危害分析和預防措施;(2)確定關鍵控製點;(3)、建立關鍵限值;(4)關鍵控製點的控製;(5)糾偏行動;(6)記錄保持程序;(7)驗證程序。
2、HACCP原理在茶園管理中的應用
2.1、應用HACCP危害分析原理對茶葉中農藥殘留含量高低原因的分析
zhongsuozhouzhi,chayezhongnongyaocanliuzhuyaolaizizhichadexianye,erxianyeyoushicongchashushangcaizhaixialaide。yejiushishuo,chayezhongdenongyaocanliuzhuyaolaizichashudebenshen,erchashuzhongnongyaocanliudegaodiyouqujueyuyixiajigefangmian。
2.1.1laiziturang。chashushishengchangzaichayuanturangzhizhong,chashugenxichulecongturangzhongxishouyangfenzhiwai,tongshi,turangzhongdejinshuyuansuhecanliuzaiturangzhongdenongyaoyebeichashusuoxishou。yinci,turangzhonghanyoudejinshuyuansu、殘留農藥的種類和含量直接影響茶樹鮮葉中金屬元素、殘留農藥的種類和含量,土壤中金屬元素、殘留農藥的種類多、含量高,那麼茶樹鮮葉中金屬元素、殘留農藥的種類也多,含量也高。
2.1.2來lai自zi施shi藥yao和he施shi肥fei。茶cha樹shu在zai生sheng長chang過guo程cheng中zhong,必bi然ran要yao對dui茶cha樹shu施shi肥fei,同tong時shi在zai蟲chong害hai多duo發fa生sheng季ji節jie還hai要yao對dui茶cha樹shu進jin行xing適shi量liang的de施shi藥yao,才cai能neng使shi茶cha樹shu生sheng長chang良liang好hao,以yi提ti供gong優you質zhi的de鮮xian葉ye。而er有you些xie在zai茶cha園yuan中zhong施shi用yong的de化hua肥fei或huo多duo或huo少shao含han有you不bu同tong種zhong類lei的de農nong藥yao成cheng分fen,經jing過guo分fen解jie之zhi後hou農nong藥yao也ye會hui同tong時shi被bei茶cha樹shu吸xi收shou。另ling外wai,在zai蟲chong害hai多duo發fa生sheng季ji節jie茶cha農nong直zhi接jie向xiang茶cha樹shu噴pen灑sa農nong藥yao,蟲chong害hai是shi沒mei有you了le,但dan部bu分fen農nong藥yao同tong時shi也ye被bei鮮xian葉ye吸xi收shou或huo殘can留liu在zai鮮xian葉ye表biao麵mian。特te別bie是shi施shi藥yao後hou安an全quan間jian隔ge期qi限xian未wei到dao就jiu采cai摘zhai的de鮮xian葉ye,其qi殘can留liu的de農nong藥yao較jiao多duo,因yin為wei表biao麵mian的de農nong藥yao還hai沒mei有you完wan全quan被bei分fen解jie或huo未wei被bei雨yu水shui衝chong洗xi幹gan淨jing,實shi踐jian證zheng明ming用yong這zhe樣yang的de鮮xian葉ye製zhi作zuo的de茶cha葉ye農nong殘can含han量liang很hen高gao。
2.1.3laizikongqi。chashushishengchangzaiziranhuanjingzhizhong,zhouweiruguozhongzhiqitanongzuowu,duizhexienongzuowushiyaoshi,nongyaohuisuizhekongqipiaoyidaochayuanzhong,beichashuxishou,congerzengjialexianyezhongdenongyaocanliu。
2.1.4laizishuitu。gaochudeturangheshiyaohoudenongzuowu,huisuizheyushuichongxiconggaochuliudaodichu。ruguochayuandishijiaodi,daiyounongyaodeshuitujiuyoukenengliudaochayuanli,beichashuxishou,yehuizengjiaxianyezhongnongyaocanliuhanliang。
3、製定預防措施
通tong過guo對dui茶cha葉ye汙wu染ran的de危wei害hai分fen析xi,找zhao到dao了le汙wu染ran茶cha葉ye的de種zhong種zhong因yin素su,針zhen對dui這zhe些xie客ke觀guan存cun在zai的de實shi際ji情qing況kuang,製zhi定ding有you效xiao的de預yu防fang措cuo施shi,從cong而er達da到dao降jiang低di茶cha葉ye中zhong農nong藥yao殘can留liu的de目mu的de。
3.1、首(shou)先(xian)通(tong)過(guo)對(dui)茶(cha)園(yuan)土(tu)壤(rang)和(he)茶(cha)樹(shu)中(zhong)農(nong)藥(yao)殘(can)留(liu)的(de)檢(jian)測(ce),確(que)定(ding)其(qi)被(bei)農(nong)藥(yao)汙(wu)染(ran)的(de)種(zhong)類(lei)和(he)程(cheng)度(du)。根(gen)據(ju)茶(cha)園(yuan)土(tu)壤(rang)和(he)茶(cha)樹(shu)中(zhong)農(nong)藥(yao)殘(can)留(liu)的(de)種(zhong)類(lei)和(he)含(han)量(liang)的(de)高(gao)低(di)確(que)定(ding)是(shi)否(fou)起(qi)用(yong)該(gai)茶(cha)園(yuan)。在(zai)農(nong)村(cun),由(you)於(yu)農(nong)藥(yao)管(guan)理(li)比(bi)較(jiao)混(hun)亂(luan),加(jia)之(zhi)茶(cha)農(nong)對(dui)農(nong)藥(yao)性(xing)質(zhi)的(de)不(bu)了(le)解(jie),隻(zhi)要(yao)價(jia)格(ge)低(di),或(huo)者(zhe)毒(du)性(xing)強(qiang),殺(sha)蟲(chong)效(xiao)果(guo)好(hao)的(de)農(nong)藥(yao),就(jiu)大(da)量(liang)在(zai)茶(cha)園(yuan)中(zhong)施(shi)用(yong)。有(you)些(xie)農(nong)藥(yao)分(fen)解(jie)期(qi)長(chang),大(da)量(liang)蓄(xu)積(ji)在(zai)土(tu)壤(rang)中(zhong)或(huo)茶(cha)樹(shu)上(shang),對(dui)這(zhe)類(lei)汙(wu)染(ran)嚴(yan)重(zhong)的(de)茶(cha)園(yuan)應(ying)果(guo)斷(duan)舍(she)棄(qi)。
3.2、對dui汙wu染ran較jiao小xiao的de茶cha園yuan,在zai生sheng長chang過guo程cheng中zhong,特te別bie是shi蟲chong害hai較jiao多duo的de季ji節jie,要yao嚴yan格ge控kong製zhi施shi藥yao。由you於yu部bu分fen地di區qu農nong藥yao管guan理li比bi較jiao鬆song散san,茶cha農nong缺que少shao對dui農nong藥yao危wei害hai的de長chang遠yuan性xing的de認ren識shi,隻zhi考kao慮lv眼yan前qian利li益yi,當dang茶cha園yuan發fa生sheng蟲chong害hai時shi,茶cha農nong往wang往wang違wei背bei國guo家jia的de禁jin令ling,購gou買mai一yi些xie毒du性xing強qiang的de農nong藥yao在zai茶cha園yuan中zhong施shi用yong,而er且qie又you不bu按an照zhao規gui定ding的de比bi例li施shi用yong,才cai造zao成cheng今jin天tian大da麵mian積ji茶cha園yuan農nong藥yao殘can留liu種zhong類lei多duo,含han量liang高gao。因yin此ci,對dui被bei汙wu染ran較jiao少shao的de茶cha園yuan一yi定ding要yao嚴yan格ge采cai取qu管guan理li措cuo施shi。首shou先xian,要yao對dui茶cha農nong進jin行xing教jiao育yu,使shi他ta們men明ming白bai濫lan用yong農nong藥yao給gei環huan境jing造zao成cheng的de長chang遠yuan危wei害hai,知zhi道dao正zheng確que的de農nong藥yao使shi用yong方fang法fa;與yu茶cha農nong簽qian合he同tong,明ming確que告gao知zhi一yi旦dan發fa現xian農nong殘can超chao標biao就jiu不bu再zai收shou購gou其qi茶cha葉ye,以yi經jing濟ji的de手shou段duan對dui其qi行xing為wei進jin行xing約yue束shu。其qi次ci,要yao對dui農nong藥yao的de來lai源yuan進jin行xing控kong製zhi,購gou買mai農nong藥yao必bi須xu履lv行xing一yi定ding的de手shou續xu,不bu能neng隨sui處chu都dou能neng到dao農nong藥yao。對dui國guo家jia禁jin止zhi施shi用yong的de農nong藥yao堅jian決jue停ting用yong,農nong藥yao的de購gou買mai、發(fa)放(fang)和(he)儲(chu)藏(zang)都(dou)要(yao)有(you)專(zhuan)人(ren)負(fu)責(ze)。再(zai)次(ci),茶(cha)園(yuan)在(zai)施(shi)藥(yao)時(shi)一(yi)定(ding)要(yao)有(you)技(ji)術(shu)人(ren)員(yuan)進(jin)行(xing)指(zhi)導(dao),要(yao)嚴(yan)格(ge)按(an)照(zhao)規(gui)定(ding)的(de)比(bi)例(li)進(jin)行(xing)配(pei)製(zhi)和(he)施(shi)用(yong),配(pei)製(zhi)的(de)比(bi)例(li)不(bu)能(neng)過(guo)高(gao),過(guo)高(gao)會(hui)導(dao)致(zhi)茶(cha)葉(ye)中(zhong)農(nong)藥(yao)殘(can)留(liu)超(chao)標(biao),但(dan)也(ye)不(bu)能(neng)過(guo)低(di),太(tai)低(di)起(qi)不(bu)到(dao)殺(sha)滅(mie)害(hai)蟲(chong)的(de)效(xiao)果(guo)。此(ci)外(wai),還(hai)要(yao)根(gen)據(ju)農(nong)藥(yao)施(shi)用(yong)後(hou)的(de)安(an)全(quan)期(qi)來(lai)確(que)定(ding)采(cai)摘(zhai)期(qi)限(xian)。
3.3空kong氣qi中zhong漂piao移yi農nong藥yao的de控kong製zhi。要yao控kong製zhi空kong氣qi中zhong漂piao移yi的de農nong藥yao,唯wei一yi的de辦ban法fa就jiu是shi控kong製zhi周zhou圍wei農nong作zuo物wu的de施shi藥yao,應ying盡jin可ke能neng在zai無wu風feng的de天tian氣qi裏li施shi藥yao或huo少shao施shi藥yao,最zui好hao不bu施shi藥yao,用yong其qi他ta的de辦ban法fa代dai替ti施shi藥yao殺sha滅mie蟲chong害hai。
3.4shuituliudongzhongnongyaodekongzhi。shuituliudongsuiranduichashunongyaocanliuyingxiangbuda,danyeshiwuranchayuanyigefangmiandeyinsu。zaixuanzechayuanshiyingtiaoxuandishijiaogaodechayuan,huoduibichayuangaodifangdenongzuowushaoshinongyaohuobushinongyao。ruguowufagaibianzhezhongyingxiang,jiuyingdangfangqidishijiaodidechayuan。
4、確定關鍵控製點,並對其進行監控
從影響茶葉農殘含量高低的程度來看,對茶樹直接施藥濃度和施量的控製應是一個關鍵控製點;還(hai)有(you)一(yi)個(ge)就(jiu)是(shi)施(shi)藥(yao)後(hou)的(de)開(kai)采(cai)期(qi)限(xian)。這(zhe)兩(liang)個(ge)環(huan)節(jie)無(wu)論(lun)那(na)一(yi)個(ge)出(chu)了(le)問(wen)題(ti),都(dou)直(zhi)接(jie)對(dui)茶(cha)葉(ye)中(zhong)的(de)農(nong)殘(can)含(han)量(liang)產(chan)生(sheng)較(jiao)大(da)的(de)影(ying)響(xiang)。因(yin)此(ci),這(zhe)兩(liang)個(ge)環(huan)節(jie)是(shi)茶(cha)葉(ye)中(zhong)農(nong)藥(yao)殘(can)留(liu)含(han)量(liang)高(gao)低(di)的(de)關(guan)鍵(jian)控(kong)製(zhi)點(dian)。
5、建立關鍵限值,並對檢測結果超過限值的茶園要采取糾偏行動。
茶cha葉ye中zhong農nong藥yao殘can留liu的de限xian值zhi是shi根gen據ju要yao求qiu或huo限xian量liang指zhi標biao來lai確que定ding,既ji不bu能neng過guo高gao,也ye不bu能neng太tai低di,限xian值zhi高gao了le,難nan以yi達da到dao要yao求qiu,低di了le也ye就jiu沒mei有you取qu得de預yu防fang的de效xiao果guo。因yin此ci,每mei種zhong農nong藥yao殘can留liu的de限xian值zhi一yi定ding要yao與yu客ke觀guan現xian實shi及ji限xian量liang指zhi標biao結jie合he起qi來lai,不bu斷duan摸mo索suo,否fou則ze,就jiu失shi去qu管guan理li的de意yi義yi。
6、記ji錄lu驗yan證zheng。在zai茶cha園yuan管guan理li中zhong每mei次ci製zhi定ding的de計ji劃hua,每mei次ci采cai取qu的de措cuo施shi,都dou應ying該gai做zuo好hao記ji錄lu,並bing通tong過guo檢jian測ce的de數shu據ju分fen析xi潛qian在zai的de危wei害hai是shi否fou顯xian著zhu,關guan鍵jian控kong製zhi點dian的de確que定ding是shi否fou正zheng確que,以yi及ji設she置zhi的de限xian值zhi和he糾jiu偏pian措cuo施shi是shi否fou合he理li和he有you效xiao,從cong而er通tong過guo對dui茶cha園yuan土tu壤rang、環境、施肥、施藥等全麵的管理,達到預期的目的。
總之,通過HACCP原yuan理li在zai茶cha園yuan管guan理li中zhong的de應ying用yong,是shi能neng夠gou迅xun速su減jian少shao茶cha葉ye中zhong農nong藥yao殘can留liu的de種zhong類lei,降jiang低di茶cha葉ye中zhong農nong藥yao殘can留liu的de含han量liang,從cong而er為wei製zhi茶cha提ti供gong殘can留liu農nong藥yao種zhong類lei較jiao少shao和he含han量liang較jiao低di的de鮮xian葉ye,以yi滿man足zu廣guang大da消xiao費fei者zhe的de需xu求qiu。實shi踐jian證zheng明ming,當dang前qian不bu少shao茶cha園yuan通tong過guo有you機ji茶cha園yuan基ji地di認ren證zheng,從cong管guan理li上shang來lai說shuo,或huo多duo或huo少shao都dou應ying用yong了leHACCP體係來管理茶園。因此,筆者認為通過在茶園中廣泛推行HACCP體係來管理茶園,在不久的將來,中國茶葉的農藥殘留問題在很大程度上得到緩解。
二OO三年七月二十二日
作者:汪玲平,1964年生,畢業於安徽農業大學茶業係。現任上海出入境檢驗檢疫局科長、工程師;中國管理科學研究院特約研究員;中國茶葉學會理事;發表論文30餘篇,參與編寫《茶葉審評與檢驗》並任副主編;製定進出口茶葉行業標準14項。
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