Cog kev loj hlob regulators siv rau lettuce

1. Tso cov noob dormancy
Qhov zoo tshaj plaws kub rau germination ntawm lettuce noob yog 15-29 ℃. Tshaj 25 ℃, lub peev xwm germination yog txo qis nyob rau hauv lightless tej yam kev mob. Cov noob uas tawg dormancy tuaj yeem txhim kho lawv lub peev xwm germination nyob rau hauv qhov kub thiab txias. Thaum cov av kub nce mus txog 27 ℃, cov noob lettuce feem ntau tuaj yeem raug ntxias kom dormant.

Thiourea
Kev kho mob nrog 0.2% Thiourea ua rau muaj kev loj hlob ntawm 75%, thaum kev tswj tsuas yog 7%.

Gibberellik Acid GA3
Kev kho mob nrog Gibberellic Acid GA3 100mg/L daws ua rau muaj kev loj hlob ntawm txog 80%.

Kinetin
Soaking noob nrog 100mg/L kinetin tov rau 3min tuaj yeem kov yeej dormancy hauv qab kub. Thaum qhov kub nce mus txog 35 ℃, cov nyhuv ntawm kinetin tseem ceeb dua.

2: Inhibit bolting
Daminozide
Thaum lettuce pib loj hlob, tshuaj tsuag cov nroj tsuag nrog 4000-8000mg / L Daminozide 2-3 zaug, ib zaug txhua 3-5 hnub, uas tuaj yeem cuam tshuam bolting, nce lub thickness ntawm stems, thiab txhim kho tus nqi lag luam.

Maleic hydrazide
Thaum lub sij hawm loj hlob ntawm lettuce seedlings, kev kho mob nrog Maleic hydrazide 100mg / L tov kuj tseem inhibit bolting thiab flowering.

3: Txhawb nqa bolting
Gibberellik Acid GA3
Lettuce tsuas yog nplooj thiab hauv paus zaub uas tuaj yeem txhawb nqa bolting nyob rau hauv sov thiab ntev-hnub mob vim yog kub kub induction ntawm paj bud sib txawv. Kev kho cov noob nrog ntev-hnub thiab qis kub tuaj yeem txhawb kev tsim paj, tab sis kev khaws cov noob yuav tsum muaj huab cua txias. Piv txwv li, nyob rau hauv qhov kev ntsuam xyuas kev nyab xeeb chamber, nyob rau hauv 10-25 ℃, ob qho tib si luv-hnub thiab ntev-hnub tuaj yeem bolt thiab tawg; qis dua 10-15 ℃ lossis siab dua 25 ℃, cov txiv hmab txiv ntoo tsis zoo thiab cov noob cia raug txo; Ntawm qhov tsis sib xws, cov noob cia yog qhov loj tshaj plaws ntawm 10-15 ℃. Nws yog ib qho nyuaj rau khaws cia cov noob lettuce, thiab txau Gibberellic Acid GA3 tuaj yeem txhawb nqa bolting ntawm lettuce thiab txo rot.

Gibberellik Acid GA3
Thaum lub cabbage lettuce muaj 4-10 nplooj, tshuaj tsuag 5-10mg / L Gibberellic Acid GA3 tov yuav txhawb nqa bolting thiab flowering ntawm cabbage lettuce ua ntej zaub qhwv, thiab cov noob mature 15 hnub ua ntej, nce noob yield.

4 Txhawb kev loj hlob
Gibberellik Acid GA3
Qhov zoo tshaj plaws kub rau lettuce seedlings yog 16-20 ℃, thiab qhov zoo tshaj plaws kub rau qhov chaw tas mus li yog 18-22 ℃. Yog tias qhov kub siab tshaj 25 ℃, lettuce yuav yooj yim loj hlob heev. Lub teeb nyob rau hauv greenhouses thiab sheds nyob rau hauv lub caij ntuj no thiab caij nplooj ntoos hlav yuav ua tau raws li ib txwm kev loj hlob ntawm lettuce. Cov dej yuav tsum tau tswj xyuas thaum lub sijhawm teeb tsa tas mus li, thiab cov dej txaus yuav tsum tau muab thaum lub sijhawm ua haujlwm. Rau lettuce nrog edible stems, thaum cov nroj tsuag muaj 10-15 nplooj, tshuaj tsuag nrog 10-40mg / L ntawm gibberellin.

Tom qab kev kho mob, qhov sib txawv ntawm lub plawv nplooj yog nrawm, tus naj npawb ntawm nplooj nce, thiab kev sib tw stems yog ceev kom elongate. Nws tuaj yeem sau tau 10 hnub ua ntej, nce 12% -44.8%. Nplooj lettuce yog kho nrog 10mg / L ntawm gibberellin 10-15 hnub ua ntej sau, thiab cov nroj tsuag loj hlob sai, uas tuaj yeem nce yield los ntawm 10% -15%. Thaum thov gibberellins ntawm lettuce, yuav tsum tau them nyiaj mloog mus rau lub concentration uas siv kom tsis txhob muaj ntau tshaj ib tug concentration, uas yuav ua rau kom stems stems, txo qhov hnyav, lignification nyob rau hauv lub tom ntej theem, thiab txo qhov zoo.

Nws tseem yog ib qho tsim nyog kom tsis txhob txau thaum cov yub me me dhau, txwv tsis pub cov stems yuav slender, bolting yuav tshwm sim ntxov, thiab kev lag luam tus nqi yuav poob.

DA-6 (Diethyl aminoethyl hexanoate)
Txau lettuce nrog 10mg/L DA-6 (Diethyl aminoethyl hexanoate) tov tuaj yeem ua rau cov yub muaj cov hauv paus tsim thiab cov qia tuab, feem ntau nce ntau lawm los ntawm 25% -30%.

5. Kev txuag tshuaj
6-Benzylaminopurine (6-BA)
Zoo li feem ntau cov zaub, lettuce senescence yog maj mam yellowing ntawm nplooj tom qab sau, tom qab ntawd maj mam disintegration ntawm cov ntaub so ntswg, ua nplaum thiab rotting. Txau daim teb nrog 5-10mg/L 6-Benzylaminopurine (6-BA) ua ntej sau tau ntev lub sij hawm uas lettuce tseem ntsuab ntsuab tom qab ntim los ntawm 3-5 hnub. Kev kho mob nrog 6-BA tom qab sau qoob loo tuaj yeem ncua kev laus. Txau lettuce nrog 2.5-10 mg/L 6-BA 1 hnub tom qab sau tau zoo tshaj plaws. Yog tias cov zaub qhwv thawj zaug khaws cia ntawm 4 ° C rau 2-8 hnub, tom qab ntawd txau nrog 5 mg/L 6-BA ntawm nplooj thiab khaws cia ntawm 21 ° C, tom qab 5 hnub ntawm kev kho mob, tsuas yog 12.1% ntawm kev tswj hwm. tuaj yeem ua lag luam, thaum 70% ntawm cov kev kho mob tuaj yeem ua lag luam.

Daminozide
Immersing nplooj thiab lettuce stems nrog 120 mg/L Daminozide tov muaj ib tug zoo preservation nyhuv thiab prolongs lub sij hawm cia.

Chlormequat Chloride (CCC)
Immersing nplooj thiab lettuce stems nrog 60 mg/L Chlormequat Chloride (CCC) tov muaj ib tug zoo preservation nyhuv thiab prolongs lub sij hawm cia.