Dos, qhiav, thiab qej yog cov khoom xyaw tseem ceeb rau kev ua noj thiab ua noj hauv ntau txhiab tsev neeg.Yog tias muaj teeb meem kev nyab xeeb khoom noj nrog cov khoom xyaw uas siv txhua hnub, tag nrho lub tebchaws yuav txaus ntshai heev.Tsis ntev los no, lubdepartment saib xyuas kev lag luamnrhiav tau ib hom "duab chives" thaum lub sij hawm random soj ntsuam ntawm lub khw zaub hauv Guizhou.Cov chives no raug muag, thiab thaum koj maj mam txhuam lawv nrog koj txhais tes, koj ob txhais tes yuav stained nrog lub teeb xiav xim.
Vim li cas cov chives ntsuab ntsuab tig xiav thaum rubbed?Raws li kev tshawb nrhiav cov txiaj ntsig tau tshaj tawm los ntawm tsoomfwv cov cai tswj hwm hauv nroog, qhov laj thawj ntawm kev hloov pauv ntawm chives tuaj yeem yog vim muaj tshuaj tua kab "Bordeaux sib tov" txau los ntawm cov neeg ua liaj ua teb thaum lub caij cog qoob loo.
"Bordeaux kua" yog dab tsi?
Sib tov tooj liab sulfate, quicklime thiab dej nyob rau hauv ib tug ratio ntawm 1: 1: 100 yuav tsim ib tug "lub ntuj xiav colloidal suspension", uas yog "Bordeaux sib tov"
"Bordeaux kua" siv rau dab tsi?
Rau chives, Bordeaux kua yog qhov ua tau zoo fungicide thiab tuaj yeem "tua" ntau yam kab mob.Tom qab Bordeaux sib tov yog txau rau saum npoo ntawm cov nroj tsuag, nws yuav tsim ib zaj duab xis tiv thaiv uas tsis yooj yim yaj thaum raug dej.Cov tooj liab ions hauv cov yeeb yaj kiab tiv thaiv tuaj yeem ua lub luag haujlwm hauv kev ua kom tsis muaj menyuam, kab mobtiv thaiv thiab khaws cia.
Yuav ua li cas lom "Bordeaux kua"?
Cov khoom xyaw tseem ceeb ntawm "Bordeaux kua" suav nrog hydrated txiv qaub, tooj liab sulfate thiab dej.Lub hauv paus tseem ceeb ntawm kev nyab xeeb yog tooj liab ions.Tooj liab yog cov hlau hnyav, tab sis nws tsis muaj toxicity lossis tsub zuj zuj ntawm toxicity.Nws yog ib qho tseem ceeb ntawm cov hlau tseem ceeb rau tib neeg lub cev.Cov neeg ib txwm xav tau noj 2-3 mg ib hnub.Pawg Neeg Saib Xyuas Khoom Noj Khoom Noj (JECFA)Raws li WHO ntseeg hais tias, coj tus neeg laus 60-kg ua piv txwv, kev noj tshuaj ntev ntev ntawm 30 mg ntawm tooj liab yuav tsis ua rau muaj kev hem thawj rau tib neeg kev noj qab haus huv.Yog li ntawd, "Bordeaux kua" kuj suav hais tias yog ib qho tshuaj tua kab zoo dua.
Dab tsi yog cov cai txwv rau "Bordeaux Liquid"?
Vim tooj liab kuj muaj kev nyab xeeb, lub teb chaws thoob ntiaj teb tsis tau qhia meej meej nws cov kev txwv hauv cov zaub mov.kuv lub teb chaws cov qauv hauv tebchaws ib zaug tau teev tseg tias qhov seem ntawm tooj liab hauv cov zaub mov yuav tsum tsis pub tshaj 10 mg / kg, tab sis qhov kev txwv no kuj tau muab tso tseg hauv xyoo 2010.
Yog tias muaj kev tso cai, nws raug nquahu kom koj yuav los ntawm cov chaw tsis tu ncua xws li cov khw muag khoom loj thiab cov khw muag khoom loj, tsau lawv kom huv si ua ntej noj mov kom tshem tawm cov dej-soluble tshuaj tua kab, thiab ua tib zoo ntxuav cov dos nplooj thiab stems thiab qhov khoob kom tshem tawm tau zoo " Cov tshuaj tua kab tsis muaj dej tsis zoo xws li "Bordeaux Liquid" tuaj yeem txhim kho kev nyab xeeb ntawm chives lossis lwm yam txiv hmab txiv ntoo thiab zaub.
Post lub sij hawm: Oct-16-2023