Gibberellinyog ib qho tshuaj hormones uas muaj nyob rau hauv cov nroj tsuag lub nceeg vaj thiab koom nrog ntau yam kev lom neeg xws li cog kev loj hlob thiab kev loj hlob.Gibberellins muaj npe A1 (GA1) rau A126 (GA126) raws li qhov kev txiav txim ntawm kev tshawb pom.Nws muaj lub luag haujlwm ntawm kev txhawb cov noob germination thiab cog kev loj hlob, thaum ntxov flowering thiab fruiting, thiab lwm yam, thiab yog dav siv nyob rau hauv ntau yam zaub mov qoob loo.
1. Kev ua haujlwm ntawm lub cev
Gibberellinyog ib qho muaj zog heev thiab dav dav cog kev loj hlob txhawb cov khoom.Muaj peev xwm txhawb cov nroj tsuag ntawm tes elongation, qia elongation, nplooj nthuav dav, ceev kev loj hlob thiab kev loj hlob, ua rau cov qoob loo loj hlob ntxov, thiab nce yield los yog txhim kho zoo;tuaj yeem tawg dormancy, txhawb germination;Noob txiv ntoo;tuaj yeem hloov pauv kev sib deev thiab qhov piv ntawm qee cov nroj tsuag, thiab ua rau qee cov nroj tsuag biennial kom paj hauv xyoo tam sim no.
2. Daim ntawv thov ntawm gibberellin hauv kev tsim khoom
(1) Txhawb kev loj hlob, kev loj hlob ntxov thiab nce yield
Kev kho mob ntawm ntau cov nplooj ntsuab ntsuab nrog gibberellin tuaj yeem ua kom txoj kev loj hlob sai thiab nce yield.Celery yog txau nrog 30 ~ 50mg / kg kua li ib nrab ib hlis tom qab sau qoob loo, cov txiaj ntsig tau nce ntau dua 25%, stems thiab nplooj yog hypertrophic, thiab kev ua lag luam yog 5 ~ 6d thaum sawv ntxov.
(2) So dormancy thiab txhawb germination
Nyob rau hauv strawberry tsev cog khoom pab cultivation thiab semi-facilitative cultivation, tom qab npog thiab ua kom sov rau 3 hnub, uas yog, thaum ntau tshaj 30% paj buds tshwm, tshuaj tsuag 5 mL ntawm 5 ~ 10 mg / kg gibberellin tshuaj ib tsob nroj, tsom rau. lub plawv nplooj, uas tuaj yeem ua rau sab saum toj inflorescence tawg ua ntej lub sijhawm., txhawb kev loj hlob thiab kev loj hlob ntxov.
(3) Txhawb nqa cov txiv hmab txiv ntoo loj hlob
Melon zaub yuav tsum tau txau nrog 2 ~ 3mg / kg ntawm kua rau ntawm cov txiv hmab txiv ntoo hluas ib zaug ntawm cov tub ntxhais hluas melon theem, uas tuaj yeem txhawb kev loj hlob ntawm cov tub ntxhais hluas melons, tab sis tsis txhob tsuag nplooj kom tsis txhob muaj cov txiv neej paj ntau ntxiv.
(4) Txuas lub sijhawm cia
Txau cov txiv hmab txiv ntoo ntawm melons nrog 2.5 ~ 3.5mg / kg kua ua ntej sau tuaj yeem ua rau lub sijhawm cia ntev.Txau cov txiv hmab txiv ntoo nrog 50 ~ 60mg / kg kua ua ntej cov txiv tsawb tau sau tseg muaj qee yam cuam tshuam rau kev ncua sijhawm khaws cov txiv hmab txiv ntoo.Jujube, longan thiab lwm yam gibberellins tuaj yeem ncua kev laus thiab ncua sij hawm cia.
(5) Hloov qhov piv ntawm txiv neej thiab poj niam paj kom nce noob yield
Siv cov poj niam dib kab rau kev tsim cov noob, tshuaj tsuag 50-100 mg / kg ntawm kua thaum cov yub muaj 2-6 nplooj tiag tiag tuaj yeem tig cov poj niam dib mus rau hauv hermaphrodite, ua kom tiav pollination, thiab nce noob yield.
(6) Txhawb nqa qia extraction thiab flowering, txhim kho kev yug me nyuam coefficient ntawm cov neeg tseem ceeb ntau yam
Gibberellin tuaj yeem ua rau lub paj tawg ntxov ntawm cov zaub ntev ntev.Txau cov nroj tsuag lossis poob cov ntsiab lus loj hlob nrog 50 ~ 500mg / kg ntawm gibberellin tuaj yeem ua rau carrots, zaub qhwv, radishes, celery, suav cabbage thiab lwm yam 2a-loj hlob hnub ci cov qoob loo.Bolting nyob rau hauv cov xwm txheej luv luv.
(7) Txo cov phytotoxicity los ntawm lwm cov tshuaj hormones
Tom qab noj zaub ntau dhau raug mob, kev kho mob nrog 2.5-5 mg / kg daws tuaj yeem txo cov phytotoxicity ntawm paclobutrazol thiab chlormethalin;Kev kho mob nrog 2 mg / kg daws tuaj yeem txo qhov phytotoxicity ntawm ethylene.Txiv lws suav muaj teeb meem vim kev siv ntau dhau ntawm cov khoom tiv thaiv kev poob, uas tuaj yeem txo tau los ntawm 20mg / kg gibberellin.
3. Cov teeb meem xav tau kev saib xyuas
Nco tseg hauv kev siv tswv yim:
1️⃣ Ua raws li cov tshuaj kho mob nruj me ntsis, thiab nws yog ib qho tsim nyog los txheeb xyuas lub sij hawm zoo, kev xav, qhov chaw thov, zaus, thiab lwm yam ntawm cov tshuaj;
2️⃣ Coordinated nrog rau sab nraud tej yam kev mob, vim lub teeb, kub, av noo, av yam, raws li zoo raws li agronomic ntsuas xws li ntau yam, fertilization, ceev, thiab lwm yam., cov tshuaj yuav muaj ntau yam kev cuam tshuam.Daim ntawv thov kev loj hlob regulators yuav tsum tau ua ke nrog cov pa agronomic ntsuas;
3️⃣ Tsis txhob ua phem rau cov nroj tsuag kev loj hlob.Txhua tus kws tswj kev loj hlob ntawm cov nroj tsuag muaj nws txoj hauv kev lom neeg ntawm kev ua, thiab txhua yam tshuaj muaj qee yam kev txwv.Tsis txhob xav tias txawm tias hom tshuaj twg yog siv, nws yuav ua rau kom ntau lawm thiab ua kom muaj zog;
4️⃣ Tsis txhob sib xyaw nrog cov tshuaj alkaline, gibberellin yooj yim rau nruab nrab thiab tsis ua rau muaj alkali.Tab sis nws tuaj yeem tov nrog acidic thiab nruab nrab chiv thiab tshuaj tua kab, thiab tov nrog urea kom nce yield zoo dua;
Post lub sij hawm: Lub Xya hli ntuj-12-2022