Daminozide yog ib qho dav -spectrum loj hlob retardant uas yuav siv tau raws li ib tug dwarfing neeg sawv cev, txiv hmab txiv ntoo chaw tus neeg sawv cev, paus tus neeg sawv cev, thiab preservative. Nws txoj haujlwm yog los tiv thaiv kev faib tawm ntawm tes, inhibit cell elongation, dwarf seedlings, thiab txhim kho cov qoob loo drought tsis kam, ua rau ntau cov qoob loo tawg ntxov, nce cov txiv hmab txiv ntoo thiab tiv thaiv ua ntej - sau qoob loo.
Mechanism ntawm kev ua
Tom qab absorbed los ntawm cov nroj tsuag, Daminozide tuaj yeem inhibit biosynthesis ntawm endogenous gibberellins thiab synthesis ntawm endogenous auxins hauv cov nroj tsuag. Nws lub luag haujlwm tseem ceeb yog txhawm rau tiv thaiv kev loj hlob ntawm cov ceg ntoo tshiab, ua kom luv luv internode ntev, nce nplooj tuab thiab cov ntsiab lus chlorophyll, tiv thaiv paj poob thiab txhawb nqa cov txiv hmab txiv ntoo, ua rau muaj kev tsim cov hauv paus hniav, txhawb kev loj hlob hauv paus, thiab txhim kho kev mob khaub thuas. Daminozide nkag mus rau hauv lub cev los ntawm cov cag ntoo, stems, thiab nplooj. Nws muaj qhov zoo ntawm kev nqus thiab kev ua haujlwm zoo thiab ua rau qhov chaw ua haujlwm nrog rau cov khoom noj txaus. Hauv nplooj, daminozide tuaj yeem elongate cov ntaub so ntswg palisade ntawm nplooj, loosen cov ntaub so ntswg, nce cov ntsiab lus chlorophyll, thiab txhim kho cov photosynthesis ntawm nplooj. Nyob rau sab saum toj ntawm cov nroj tsuag, nws tuaj yeem inhibit qhov mitosis ntawm apical meristem. Nyob rau hauv stems thiab ceg, nws muaj peev xwm shorten lub internode nrug thiab inhibit qhov elongation ntawm ceg. Daminozide yog cov nroj tsuag kev loj hlob regulator nrog broad spectrum thiab siv tau.
Kev ua tau zoo
1. ncua kev loj hlob ntawm cov nroj tsuag, ua kom cov nplooj tsaus ntsuab, me me thiab tuab, cov nroj tsuag compact thiab ruaj khov, lub hauv paus system yog zoo tsim, nce lub hauv paus qhuav qhov hnyav thiab txo lub crown- paus ratio, uas yog zoo los tswj lub elongation los yog paj bud sib txawv.
2. Ua kom cov chlorophyll cov ntsiab lus ntawm cov qoob loo, ncua kev laus ntawm chloroplasts, qeeb qhov kev loj hlob ntawm tus nqi, thiab ua kom cov photosynthetic net assimilation tus nqi, uas yog ib qho txiaj ntsig los ua kom cov tsub zuj zuj ntawm cov khoom qhuav, txhim kho qhov zoo, hardness thiab cov txiv hmab txiv ntoo teeb tsa ntawm cov txiv hmab txiv ntoo, thiab txhawb cov concentration ntawm cov txiv hmab txiv ntoo kom loj hlob.
3. Ua kom cov piam thaj hauv cov noob qoob loo, txo kev siv zog, txo qis kev kis kab mob, thiab lwm yam. Qhov no yuav cuam tshuam nrog daminozide lub peev xwm los txhim kho cov nroj tsuag tsis zoo rau qhov chaw tsis zoo thiab pab txo cov kab mob physiological.
4. Decolorization. Daminozide tuaj yeem decomposed sai sai los ntawm cov kab mob hauv cov av.
Yuav siv li cas
Siv daminozide tuaj yeem ua kom luv luv ntawm cov ceg ntoo ntawm cov txiv hmab txiv ntoo loj hlob, ua kom cov nplooj xim tob zuj zus, ua kom cov nplooj me me thiab tuab, thiab ua kom cov chlorophyll. Daminozide tsis muaj zog li daminozide hauv kev tswj kev loj hlob ntawm cov txiv hmab txiv ntoo tshiab, thiab tib lub sijhawm, lub sijhawm ntawm kev tua inhibition nyhuv kuj qeeb dua. Raws li kev ntsuam xyuas, cov nyhuv ntawm kev siv daminozide 200mg / L rau roses -scented grapes yog zoo dua, thiab cov concentration yuav tsum tau nce mus rau 2000-3000mg / L rau txiv hmab txiv ntoo xws li Kyoho thiab Kangke. Lub sij hawm tshuaj tsuag daminozide yog 7-10 hnub ua ntej tshaj li daminozide, thiab cov tshuaj txau yog 2000-3000mg / L. Cov tshuaj tsuag concentration yog txiav txim siab raws li cov txiv hmab txiv ntoo ntau yam.
Lus Cim: Thaum siv daminozide, nws yog ib qho tsim nyog yuav tsum tau ua cov kev sim ntawm ntau yam hauv zos ua ntej txhawb nws; Kyoho txiv hmab txiv ntoo tau kho nrog 4000mg / L daminozide yam tsis muaj phytotoxicity. Thaum cov txiv hmab txiv ntoo tshiab muaj 6 mus rau 7 nplooj, txau nrog 1000mg / L txog 2000mg / L daminozide ib zaug tuaj yeem cuam tshuam kev loj hlob ntawm cov ceg tshiab thiab nce yield. Nws tuaj yeem sib xyaw nrog gibberellins kom nce qhov feem ntawm cov txiv hmab txiv ntoo tsis muaj noob, ua kom cov txiv hmab txiv ntoo hardness, thiab txo qhov kev puas tsuaj thaum lub sij hawm thauj mus los.
