Igama elithi "organic" liphethe okulindelwe okujulile kwabathengi ngokudla okumsulwa. Kepha uma amathuluzi okuhlola elabhorethri esebenza, ingabe leyo mifino enamalebula aluhlaza ayinasici ngempela njengoba kucatshangwa? Umbiko wakamuva kazwelonke wokuqapha izinga lemikhiqizo yezolimo ephilayo uveza ukuthi phakathi kweziqephu ezingama-326 zemifino ephilayo ethathwe amasampula, cishe u-8.3% watholakala unomkhondo.izinsalela zezibulala-zinambuzane. Le datha, njengetshe eliphonswe echibini, ibangele ukugeleza emakethe yabathengi.
I. "Indawo Empunga" Yamazinga Okuphila
Ivula "Imithetho Yokusetshenziswa Kwesitifiketi Somkhiqizo Wezinto Eziphilayo," i-Athikili 7 yeSahluko 2 ibala ngokucacile izinhlobo ezingama-59 zezibulala-zinambuzane zemvelaphi yezitshalo namaminerali ezivunyelwe ukusetshenziswa. Ama-biopesticides afana ne-azadirachtin ne-pyrethrins afakiwe ngokugqamile. Nakuba lezi zinto ezikhishwe ezitshalweni zemvelo zichazwa ngokuthi "ubuthi obuphansi," ukufafaza ngokweqile kungase kubangele izinsalela. Okukhathaza kakhulu ukuthi izindinganiso zokunikeza izitifiketi zibeka isikhathi sokuhlanzwa kwenhlabathi esiyizinyanga ezingama-36, kodwa ama-metabolites e-glyphosate asemijikelezweni yokulima edlule asengatholwa emanzini angaphansi komhlaba kwezinye izisekelo eNyakatho ye-China Plain.
Amacala wei-chlorpyrifosinsalela emibikweni yokuhlola isebenza njengesixwayiso. Isizinda esisodwa esiqinisekisiwe, esiseduze nepulazi lendabuko, sihlaselwe ukungcoliswa kwezibulala-zinambuzane phakathi nenkathi yezimvula ezinkulu, okuholele ekutholweni kwensalela ye-organophosphorus engu-0.02 mg/kg kumasampula esipinashi. Lokhu "kungcoliswa kwemvelo" kuveza ukuntula kwesimiso esikhona sokunikeza izitifiketi ekuqapheni ngamandla indawo yokulima, kudabula umfantu ekuhlanzekeni kwezolimo oluphilayo.
II. Iqiniso Lembulwa Ema-laboratories
Uma usebenzisa i-gas chromatography-mass spectrometry, ochwepheshe babeka umkhawulo wokutholwa wamasampuli kuleveli engu-0.001 mg/kg. Idatha ibonisa ukuthi u-90% wamasampuli amahle abe namazinga ezinsalela kuphela angu-1/50 kuya ku-1/100 alawo asemifino evamile, okulingana nokuphonsa amaconsi kayinki amabili echibini lokubhukuda elijwayelekile. Kodwa-ke, intuthuko kubuchwepheshe besimanje bokubona yenze ukuba ukuthwebula ama-molecule ezingeni elilodwa ebhiliyoni, okwenza "iziro ezisele" zibe umsebenzi ongenakwenzeka.
Ubunkimbinkimbi bamaketanga okungcola abunakucatshangwa. Ukungcoliswa kwempahla ngenxa yezimoto zokuthutha ezingahlanzwanga ngokuphelele kubala u-42% wamanani ezigameko, kuyilapho ukungcoliswa kokuxhumana okubangelwa ukufakwa okuxubile emashalofini ezitolo ezinkulu kubala u-31%. Ngobuqili obukhulu, ama-antibiotic axutshwe kwezinye izinto ezingavuthiwe zikamanyolo ekugcineni angena kumaseli emifino ngokusebenzisa i-bioaccumulation.
III. Indlela Enengqondo Yokwakha Kabusha I-Trust
Ebhekene nombiko wokuhlola, umlimi wezinto eziphilayo ubonise "uhlelo lwakhe lokulandela umkhondo olusobala": Ikhodi ye-QR ephaketheni ngalinye ivumela ukubuza ngesilinganiso sengxube ye-Bordeaux esetshenzisiwe kanye nemibiko yokuhlolwa kwenhlabathi kumakhilomitha amathathu azungezile. Le ndlela yokubeka izinqubo zokukhiqiza obala yakha kabusha ukuzethemba kwabathengi.
Ochwepheshe bokuphepha kokudla batusa ukusebenzisa "indlela yokuhlanza kathathu": ukucwiliswa emanzini e-soda yokubhaka ukuze kubole izibulala-zinambuzane ezincibilika kumafutha, kusetshenziswa isicoci se-ultrasonic ukuze kukhishwe ama-surface adsorbates, kanye ne-blanching imizuzwana emi-5 ku-100°C ukuze kungasebenzi ama-enzyme ezinto eziphilayo. Lezi zindlela zingaqeda u-97.6% wezinsalela zokulandelela, zenze umugqa wokuvikela impilo uqine kakhulu.
Idatha yokuhlolwa kwelabhorethri akufanele isebenze njengesinqumo esiphika inani lezolimo zemvelo. Uma siqhathanisa i-0.008 mg/kg yensalela ye-chlorpyrifos no-1.2 mg/kg etholwe kusilimo esidliwayo esinamagatsha anamanzi esivamile, sisengabona ukusebenza okubalulekile kwezinhlelo zokukhiqiza izinto eziphilayo ekwehliseni ukusetshenziswa kwezibulala-zinambuzane. Mhlawumbe ubumsulwa beqiniso abukho kuziro ophelele, kodwa ekusondeleni kuqanda ngokuqhubekayo, okudinga abakhiqizi, abalawuli, nabathengi ukuba baluke ngokuhlanganyela inethiwekhi yekhwalithi eqinile.
Isikhathi sokuthumela: Mar-12-2025