Nroj tsuag loj hlobretarder yog ib qho yuav tsum muaj nyob rau hauv cov txheej txheem ntawm kev cog qoob loo.Los ntawm kev tswj hwm kev loj hlob ntawm cov qoob loo thiab kev loj hlob ntawm cov qoob loo, cov qoob loo zoo dua thiab ntau dua tuaj yeem tau txais.Cov nroj tsuag loj hlob retardants feem ntau muaj xws li paclobutrazol, uniconazole, peptidomimetics, chlormethalin, thiab lwm yam. Raws li hom tshiab ntawm cov nroj tsuag loj hlob retardant, prohexadione calcium tau txais kev saib xyuas thoob plaws hauv kev ua lag luam nyob rau xyoo tas los no, thiab cov naj npawb ntawm cov ntawv sau npe kuj tau nce sai heev.Ces,paclobutrazol, niconazole, paroxamine, chlorhexidine, thiab prohexadione calcium, dab tsi yog qhov txawv ntawm kev lag luam kev siv ntawm cov khoom no?
(1) Prohexadione calcium: Nws yog hom tshiab ntawm cov nroj tsuag kev loj hlob retarder.
Lub luag haujlwm yog tias nws tuaj yeem cuam tshuam GA1 hauv gibberellin, txo qis qia elongation ntawm cov nroj tsuag, thiab yog li tswj kev loj hlob leggy ntawm cov nroj tsuag.Nyob rau tib lub sijhawm, nws tsis muaj qhov cuam tshuam rau GA4 uas tswj cov paj paj sib txawv thiab kev loj hlob ntawm cov qoob loo.
Prohexadione calcium tau tsim tawm hauv Nyij Pooj xyoo 1994 ua acyl cyclohexanedione kev loj hlob retardant.Kev tshawb pom ntawm prohexadione calcium yog txawv ntawm quaternary ammonium ntsev (chameleon, mepinium), triazoles (paclobutrazol, alkene) Cog kev loj hlob retardants xws li oxazole) tau tsim ib tug tshiab teb ntawm lig-theem inhibition ntawm gibberellin biosynthesis, thiab tau ua lag luam. thiab dav siv hauv Tebchaws Europe thiab Tebchaws Meskas.Tam sim no, prohexadione-calcium muaj kev txhawj xeeb los ntawm cov lag luam hauv tsev, qhov laj thawj tseem ceeb yog vim li cas 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 txiaj ntsig zoo.Nyob rau hauv lub neej yav tom ntej, nws yuav hloov tau triazole kev loj hlob retardants, thiab muaj dav daim ntawv thov kev cia siab nyob rau hauv teb, txiv hmab txiv ntoo, paj, Suav tshuaj cov ntaub ntawv thiab kev lag luam qoob loo.
(2) Paclobutrazol: Nws yog ib qho inhibitor ntawm cov nroj tsuag endogenous gibberellic acid.Nws muaj cov teebmeem ntawm ncua kev loj hlob ntawm cov nroj tsuag, inhibiting qoob loo stalk elongation, shortening internodes, txhawb tillering, nce nroj tsuag kev nyuaj siab, txhawb paj bud sib txawv thiab nce yield.Paclobutrazol yog tsim rau cov qoob loo xws li nplej, nplej, txiv laum huab xeeb, txiv hmab txiv ntoo ntoo, taum pauv, nyom, thiab lwm yam, thiab muaj txiaj ntsig zoo ntawm kev tswj kev loj hlob.
Kev mob tshwm sim ntawm paclobutrazol: Kev siv ntau dhau tuaj yeem ua rau cov nroj tsuag dwarf, deformed keeb kwm thiab tubers, curled nplooj, dumb paj, ntxov ntxov poob ntawm cov nplooj qub ntawm lub hauv paus, thiab twisted thiab shrinking nplooj hluas.Vim lub sij hawm ntev ntawm kev ua tau zoo paclobutrazol, kev siv ntau dhau yuav nyob twj ywm hauv av, thiab nws tseem yuav ua rau phytotoxicity rau cov qoob loo tom ntej, ua rau tsis muaj yub, qhov tshwm sim lig, tsis tshua muaj qhov tshwm sim, thiab cov noob deformity thiab lwm cov tsos mob phytotoxic.
(3) Uniconazole: Nws kuj yog ib qho inhibitor ntawm gibberellin.Nws muaj lub luag haujlwm ntawm kev tswj cov nroj tsuag kev loj hlob, shortening internodes, dwarfing nroj tsuag, txhawb lateral bud loj hlob thiab paj bud sib txawv, thiab pab txhawb kev ntxhov siab.Vim tias cov pa roj carbon ob npaug ntawm paclobutrazol, nws cov kev ua haujlwm lom neeg thiab cov tshuaj muaj txiaj ntsig yog 6 txog 10 npaug thiab 4 mus rau 10 npaug siab dua li ntawm paclobutrazol, raws li, thiab cov seem hauv av tsuas yog kwv yees li ib feem peb ntawm cov paclobutrazol, thiab nws txoj kev ua tau zoo Cov kev lwj yog sai dua, thiab qhov cuam tshuam rau cov qoob loo tom ntej tsuas yog 1/5 ntawm cov paclobutrazol.
Kev mob tshwm sim ntawm uniconazole: thaum siv ntau dhau, nws yuav ua rau phytotoxicity, ua rau cov nroj tsuag hlawv, withering, kev loj hlob tsis zoo, nplooj deformity, nplooj poob, paj poob, poob txiv hmab txiv ntoo, lig maturity, thiab lwm yam, thiab siv nyob rau hauv cov zaub yub theem. tseem yuav cuam tshuam rau kev loj hlob ntawm cov noob, Nws kuj yog tshuaj lom rau cov ntses thiab tsis haum rau siv hauv cov pas dej ntses thiab lwm yam tsiaj ua liaj ua teb.
(4) Peptidamine (Mepinium): Nws yog ib qho inhibitor ntawm gibberellin.Nws tuaj yeem txhim kho cov synthesis ntawm chlorophyll, cov nroj tsuag muaj zog, tuaj yeem nqus tau los ntawm nplooj thiab cov hauv paus hniav ntawm cov nroj tsuag, thiab xa mus rau tag nrho cov nroj tsuag, yog li inhibiting cell elongation thiab apical dominance, thiab tseem tuaj yeem ua rau cov internodes thiab ua rau cov nroj tsuag. hom compact.Nws tuaj yeem ncua kev loj hlob ntawm cov nroj tsuag, tiv thaiv cov nroj tsuag ntawm kev loj hlob, thiab ncua kev sib khi.Peptamine tuaj yeem txhim kho kev ruaj ntseg ntawm cov cell membranes thiab ua kom cov nroj tsuag muaj kev ntxhov siab.Piv nrog paclobutrazol thiab uniconazole, nws muaj cov khoom siv tshuaj me me, tsis muaj qhov khaus, thiab muaj kev nyab xeeb dua.Nws tuaj yeem yooj yim siv tau rau txhua lub sijhawm ntawm cov qoob loo, txawm tias nyob rau hauv cov yub thiab paj theem thaum cov qoob loo yog cov rhiab heev rau tshuaj., thiab yeej tsis muaj kev phiv phiv.
(5) Chlormetrodin: Nws ua tiav cov txiaj ntsig ntawm kev tswj hwm kev ua haujlwm siab los ntawm inhibiting cov synthesis ntawm endogenous gibberellin.Chlormetrodin muaj kev tswj xyuas cov txiaj ntsig ntawm cov nroj tsuag kev loj hlob, sib npaug kev loj hlob ntawm cov nroj tsuag thiab kev loj hlob ntawm kev loj hlob, txhim kho pollination thiab txiv hmab txiv ntoo qhov chaw, thiab ua kom muaj txiaj ntsig zoo.Ncua cell elongation, dwarf nroj tsuag, sturdy stems, thiab shorten internodes.
Sib txawv ntawm paclobutrazol thiab mepiperonium, paclobutrazol feem ntau yog siv rau hauv cov yub thiab theem tshiab tua, thiab muaj txiaj ntsig zoo rau cov txiv laum huab xeeb, tab sis cov nyhuv ntawm lub caij nplooj zeeg thiab lub caij ntuj no cov qoob loo yog dav dav;Ntawm cov qoob loo luv luv, kev siv tsis raug ntawm chlormethalin feem ntau yuav ua rau cov qoob loo shrinkage thiab phytotoxicity yog qhov nyuaj los daws;mepiperinium yog ib qho me me, thiab tuaj yeem txo tau los ntawm kev txau gibberellin los yog dej kom nce fertility tom qab phytotoxicity.
Post lub sij hawm: Lub Xya hli ntuj-19-2022