Kev loj hlob ntawm cov nroj tsuagCov tshuaj tiv thaiv kev loj hlob yog qhov tseem ceeb hauv kev cog qoob loo. Los ntawm kev tswj hwm kev loj hlob ntawm cov nroj tsuag thiab kev loj hlob ntawm cov qoob loo, qhov zoo dua thiab cov qoob loo ntau dua tuaj yeem tau txais. Cov tshuaj tiv thaiv kev loj hlob ntawm cov nroj tsuag feem ntau suav nrog paclobutrazol, uniconazole, peptidomimetics, chlormethalin, thiab lwm yam. Raws li ib hom tshuaj tiv thaiv kev loj hlob ntawm cov nroj tsuag tshiab, prohexadione calcium tau txais kev saib xyuas dav dav hauv kev ua lag luam hauv xyoo tas los no, thiab tus lej ntawm kev sau npe kuj tau nce sai. Tom qab ntawd,paclobutrazol, niconazole, paroxamine, chlorhexidine, thiab prohexadione calcium, qhov sib txawv ntawm kev siv hauv kev ua lag luam ntawm cov khoom no yog dab tsi?
(1) Prohexadione calcium: Nws yog ib hom tshiab ntawm cov nroj tsuag loj hlob qeeb.
Lub luag haujlwm yog tias nws tuaj yeem tiv thaiv GA1 hauv gibberellin, ua kom cov qia ntev ntawm cov nroj tsuag, thiab yog li tswj kev loj hlob ntawm cov nroj tsuag. Tib lub sijhawm, nws tsis muaj kev cuam tshuam rau GA4 uas tswj cov paj ntawm cov nroj tsuag thiab kev loj hlob ntawm cov noob.
Prohexadione calcium tau tsim tawm hauv Nyiv Pooj xyoo 1994 ua ib qho acyl cyclohexanedione growth retardant. Kev tshawb pom ntawm prohexadione calcium txawv ntawm cov ntsev quaternary ammonium (chameleon, mepinium), triazoles (paclobutrazol, alkene) Cov nroj tsuag loj hlob retardants xws li oxazole) tau tsim ib qho chaw tshiab ntawm kev txwv tsis pub gibberellin biosynthesis, thiab tau ua lag luam thiab siv dav hauv Tebchaws Europe thiab Tebchaws Meskas. Tam sim no, prohexadione-calcium yog qhov txhawj xeeb dav los ntawm cov tuam txhab hauv tsev, qhov laj thawj tseem ceeb yog tias piv nrog triazole retarders, prohexadione-calcium tsis muaj tshuaj lom rau cov nroj tsuag tig, tsis muaj kuab paug rau ib puag ncig, thiab muaj qhov zoo dua. Yav tom ntej, nws yuav hloov triazole growth retardants, thiab muaj kev cia siab dav hauv cov teb, cov ntoo txiv hmab txiv ntoo, paj, cov ntaub ntawv tshuaj suav thiab cov qoob loo kev lag luam.
(2) Paclobutrazol: Nws yog ib qho tshuaj uas ua rau cov nroj tsuag tsis loj hlob sai (endogenous gibberellic acid). Nws muaj cov teebmeem ntawm kev ncua kev loj hlob ntawm cov nroj tsuag, tiv thaiv kev ntev ntawm cov qia, ua rau cov internodes luv luv, txhawb kev tawg paj, ua rau cov nroj tsuag tiv taus kev ntxhov siab, txhawb kev sib txawv ntawm cov paj thiab ua rau cov qoob loo ntau ntxiv. Paclobutrazol yog qhov tsim nyog rau cov qoob loo xws li mov, nplej, txiv laum huab xeeb, ntoo txiv hmab txiv ntoo, taum pauv, nyom, thiab lwm yam, thiab muaj cov teebmeem zoo kawg nkaus ntawm kev tswj kev loj hlob.
Cov kev mob tshwm sim ntawm paclobutrazol: Kev siv ntau dhau tuaj yeem ua rau cov nroj tsuag me me, cov hauv paus hniav thiab cov tubers deformed, nplooj curled, paj ruam, cov nplooj qub poob ntxov ntxov ntawm lub hauv paus, thiab cov nplooj hluas twisted thiab shrinked. Vim yog lub sijhawm ntev ntawm paclobutrazol ua haujlwm, kev siv ntau dhau yuav nyob hauv av, thiab nws tseem yuav ua rau phytotoxicity rau cov qoob loo tom ntej, ua rau tsis muaj noob, tawm lig, cov noob tawm tsawg, thiab cov noob deformed thiab lwm yam tsos mob phytotoxic.
(3) Uniconazole: Nws kuj yog ib qho tshuaj uas ua rau gibberellin tsis ua haujlwm. Nws muaj cov haujlwm ntawm kev tswj kev loj hlob ntawm cov nroj tsuag, ua kom cov internodes luv luv, ua rau cov nroj tsuag me me, txhawb kev loj hlob ntawm cov paj thiab kev sib txawv ntawm cov paj, thiab txhim kho kev tiv thaiv kev ntxhov siab. Vim yog cov paclobutrazol ob npaug, nws cov haujlwm biological thiab cov txiaj ntsig kho mob yog 6 txog 10 npaug thiab 4 txog 10 npaug ntau dua li ntawm paclobutrazol, feem, thiab cov nyiaj seem hauv av tsuas yog kwv yees li ib feem plaub ntawm paclobutrazol, thiab nws cov txiaj ntsig Tus nqi lwj sai dua, thiab qhov cuam tshuam rau cov qoob loo tom ntej tsuas yog 1/5 ntawm paclobutrazol.
Cov kev mob tshwm sim ntawm uniconazole: thaum siv ntau dhau, nws yuav ua rau phytotoxicity, ua rau cov nroj tsuag kub hnyiab, qhuav, tsis loj hlob, nplooj deformity, nplooj poob, paj poob, txiv hmab txiv ntoo poob, lig maturation, thiab lwm yam, thiab daim ntawv thov nyob rau hauv cov zaub seedling theem yuav cuam tshuam rau kev loj hlob ntawm cov noob, Nws kuj yog lom rau ntses thiab tsis haum rau siv hauv cov pas dej ntses thiab lwm yam tsiaj txhu hauv dej.
(4) Peptidamine (Mepinium): Nws yog ib qho tshuaj uas tiv thaiv gibberellin. Nws tuaj yeem ua kom cov chlorophyll tsim tau zoo dua, cov nroj tsuag muaj zog, tuaj yeem nqus tau los ntawm nplooj thiab cov hauv paus ntawm cov nroj tsuag, thiab xa mus rau tag nrho cov nroj tsuag, yog li ntawd tiv thaiv kev nthuav dav ntawm cov hlwb thiab kev tswj hwm ntawm cov apical, thiab tseem tuaj yeem ua rau cov internodes luv dua thiab ua rau cov nroj tsuag compact. Nws tuaj yeem ncua kev loj hlob ntawm cov nroj tsuag, tiv thaiv cov nroj tsuag kom tsis txhob loj hlob, thiab ncua kev kaw. Peptamine tuaj yeem txhim kho kev ruaj khov ntawm cov hlwb cell thiab ua rau cov nroj tsuag tiv taus kev ntxhov siab. Piv nrog paclobutrazol thiab uniconazole, nws muaj cov khoom siv tshuaj uas tsis muaj zog, tsis khaus, thiab muaj kev nyab xeeb dua. Nws tuaj yeem siv rau txhua lub sijhawm ntawm cov qoob loo, txawm tias nyob rau theem noob thiab paj thaum cov qoob loo rhiab heev rau cov tshuaj. , thiab yeej tsis muaj kev phiv tsis zoo.
(5) Chlormetrodin: Nws ua tiav qhov cuam tshuam ntawm kev tswj hwm hyperactivity los ntawm kev txwv tsis pub tsim cov gibberellin endogenous. Chlormetrodin muaj cov nyhuv tswj hwm rau kev loj hlob ntawm cov nroj tsuag, sib npaug kev loj hlob ntawm cov nroj tsuag thiab kev loj hlob ntawm kev yug me nyuam, txhim kho kev sib xyaw ua ke thiab kev teeb tsa txiv hmab txiv ntoo, thiab ua rau muaj kev tawg paj zoo. Ncua lub cell elongation, cov nroj tsuag dwarf, cov qia ruaj khov, thiab luv luv internodes.
Txawv ntawm paclobutrazol thiab mepiperonium, paclobutrazol feem ntau siv rau theem noob thiab theem tua tshiab, thiab muaj cov txiaj ntsig zoo rau cov txiv laum huab xeeb, tab sis cov txiaj ntsig rau lub caij nplooj zeeg thiab lub caij ntuj no cov qoob loo yog dav dav; Ntawm cov qoob loo luv luv, kev siv chlormethalin tsis raug feem ntau yuav ua rau cov qoob loo shrinkage thiab phytotoxicity nyuaj rau txo; mepiperinium yog qhov tsis hnyav, thiab tuaj yeem txo tau los ntawm kev txau gibberellin lossis dej kom nce kev muaj menyuam tom qab phytotoxicity.
Lub sijhawm tshaj tawm: Lub Xya Hli-19-2022