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、zhiliangkongzhiheweixianpingjiadengyouguanyuanlihefangfa,duishipinjiagongyizhizuizhongshiyongchanpindengguochengzhongcunzaiqianzaixingdeweihaijinxingfenxipanduan,zhaochuduizuizhongchanpinzhiliangyouyingxiangdeguanjiankongzhihuanjie,bingcaiquxiangyingkongzhicuoshi,shishipinweihaixingjianzhizuidichengdu,congerdadaozuizhongchanpinyoujiaogaoanquanxingdemude。
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
眾(zhong)所(suo)周(zhou)知(zhi),茶(cha)葉(ye)中(zhong)農(nong)藥(yao)殘(can)留(liu)主(zhu)要(yao)來(lai)自(zi)製(zhi)茶(cha)的(de)鮮(xian)葉(ye),而(er)鮮(xian)葉(ye)又(you)是(shi)從(cong)茶(cha)樹(shu)上(shang)采(cai)摘(zhai)下(xia)來(lai)的(de)。也(ye)就(jiu)是(shi)說(shuo),茶(cha)葉(ye)中(zhong)的(de)農(nong)藥(yao)殘(can)留(liu)主(zhu)要(yao)來(lai)自(zi)茶(cha)樹(shu)的(de)本(ben)身(shen),而(er)茶(cha)樹(shu)中(zhong)農(nong)藥(yao)殘(can)留(liu)的(de)高(gao)低(di)又(you)取(qu)決(jue)於(yu)以(yi)下(xia)幾(ji)個(ge)方(fang)麵(mian)。
2.1.1來(lai)自(zi)土(tu)壤(rang)。茶(cha)樹(shu)是(shi)生(sheng)長(chang)在(zai)茶(cha)園(yuan)土(tu)壤(rang)之(zhi)中(zhong),茶(cha)樹(shu)根(gen)係(xi)除(chu)了(le)從(cong)土(tu)壤(rang)中(zhong)吸(xi)收(shou)養(yang)分(fen)之(zhi)外(wai),同(tong)時(shi),土(tu)壤(rang)中(zhong)的(de)金(jin)屬(shu)元(yuan)素(su)和(he)殘(can)留(liu)在(zai)土(tu)壤(rang)中(zhong)的(de)農(nong)藥(yao)也(ye)被(bei)茶(cha)樹(shu)所(suo)吸(xi)收(shou)。因(yin)此(ci),土(tu)壤(rang)中(zhong)含(han)有(you)的(de)金(jin)屬(shu)元(yuan)素(su)、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)。
2.1.3來lai自zi空kong氣qi。茶cha樹shu是shi生sheng長chang在zai自zi然ran環huan境jing之zhi中zhong,周zhou圍wei如ru果guo種zhong植zhi其qi他ta農nong作zuo物wu,對dui這zhe些xie農nong作zuo物wu施shi藥yao時shi,農nong藥yao會hui隨sui著zhe空kong氣qi飄piao移yi到dao茶cha園yuan中zhong,被bei茶cha樹shu吸xi收shou,從cong而er增zeng加jia了le鮮xian葉ye中zhong的de農nong藥yao殘can留liu。
2.1.4來lai自zi水shui土tu。高gao處chu的de土tu壤rang和he施shi藥yao後hou的de農nong作zuo物wu,會hui隨sui著zhe雨yu水shui衝chong洗xi從cong高gao處chu流liu到dao低di處chu。如ru果guo茶cha園yuan地di勢shi較jiao低di,帶dai有you農nong藥yao的de水shui土tu就jiu有you可ke能neng流liu到dao茶cha園yuan裏li,被bei茶cha樹shu吸xi收shou,也ye會hui增zeng加jia鮮xian葉ye中zhong農nong藥yao殘can留liu含han量liang。
3、製定預防措施
tongguoduichayewurandeweihaifenxi,zhaodaolewuranchayedezhongzhongyinsu,zhenduizhexiekeguancunzaideshijiqingkuang,zhidingyouxiaodeyufangcuoshi,congerdadaojiangdichayezhongnongyaocanliudemude。
3.1、shouxiantongguoduichayuanturanghechashuzhongnongyaocanliudejiance,quedingqibeinongyaowurandezhongleihechengdu。genjuchayuanturanghechashuzhongnongyaocanliudezhongleihehanliangdegaodiquedingshifouqiyonggaichayuan。zainongcun,youyunongyaoguanlibijiaohunluan,jiazhichanongduinongyaoxingzhidebulejie,zhiyaojiagedi,huozheduxingqiang,shachongxiaoguohaodenongyao,jiudaliangzaichayuanzhongshiyong。youxienongyaofenjieqichang,daliangxujizaiturangzhonghuochashushang,duizheleiwuranyanzhongdechayuanyingguoduansheqi。
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)、fafanghechuzangdouyaoyouzhuanrenfuze。zaici,chayuanzaishiyaoshiyidingyaoyoujishurenyuanjinxingzhidao,yaoyangeanzhaoguidingdebilijinxingpeizhiheshiyong,peizhidebilibunengguogao,guogaohuidaozhichayezhongnongyaocanliuchaobiao,danyebunengguodi,taidiqibudaoshamiehaichongdexiaoguo。ciwai,haiyaogenjunongyaoshiyonghoudeanquanqilaiquedingcaizhaiqixian。
3.3kongqizhongpiaoyinongyaodekongzhi。yaokongzhikongqizhongpiaoyidenongyao,weiyidebanfajiushikongzhizhouweinongzuowudeshiyao,yingjinkenengzaiwufengdetianqilishiyaohuoshaoshiyao,zuihaobushiyao,yongqitadebanfadaitishiyaoshamiechonghai。
3.4水(shui)土(tu)流(liu)動(dong)中(zhong)農(nong)藥(yao)的(de)控(kong)製(zhi)。水(shui)土(tu)流(liu)動(dong)雖(sui)然(ran)對(dui)茶(cha)樹(shu)農(nong)藥(yao)殘(can)留(liu)影(ying)響(xiang)不(bu)大(da),但(dan)也(ye)是(shi)汙(wu)染(ran)茶(cha)園(yuan)一(yi)個(ge)方(fang)麵(mian)的(de)因(yin)素(su)。在(zai)選(xuan)擇(ze)茶(cha)園(yuan)時(shi)應(ying)挑(tiao)選(xuan)地(di)勢(shi)較(jiao)高(gao)的(de)茶(cha)園(yuan),或(huo)對(dui)比(bi)茶(cha)園(yuan)高(gao)地(di)方(fang)的(de)農(nong)作(zuo)物(wu)少(shao)施(shi)農(nong)藥(yao)或(huo)不(bu)施(shi)農(nong)藥(yao)。如(ru)果(guo)無(wu)法(fa)改(gai)變(bian)這(zhe)種(zhong)影(ying)響(xiang),就(jiu)應(ying)當(dang)放(fang)棄(qi)地(di)勢(shi)較(jiao)低(di)的(de)茶(cha)園(yuan)。
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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