Thaum kev ywg dej yog qhov tseem ceeb rau cov qos yaj ywm siab, agronomists tau ceeb toom tias kev ywg dej ntau dhau - tshwj xeeb tshaj yog thaum ntxov ntawm kev loj hlob - tuaj yeem ua rau muaj kev phom sij ntau dua li qhov zoo. Kev nkag siab thaum twg thiab yuav ua li cas irrigate kom zoo tuaj yeem ua rau qhov sib txawv ntawm cov qoob loo zoo thiab cov stunted, tsis sib xws.
Myths of Early Abundant Watering
Nws yog ib qho kev ntseeg ntawm cov neeg cog qoob loo tias qos yaj ywm yuav tsum tau ywg dej ntau tom qab sprouting. Txawm li cas los xij, kev tshawb fawb agronomic thiab kev paub dhau los qhia tau tias Thaum ntxov tshaj irrigation yuav txo tau yields. Raws li cov kws tshaj lij, watering sai sai txhawb kev tsim ntawm ntiav cov hauv paus system, uas tso lub tuber cheeb tsam ze ntawm cov av nto. Nyob rau hauv lem, qhov no ua rau muaj kev pheej hmoo ntawm overheating thiab noo noo kev nyuaj siab, tshwj xeeb tshaj yog thaum lub caij sov sov.
Qos yaj ywm, tsis zoo li txiv lws suav lossis kua txob, muaj a xav tau dej siab, piv rau cov qoob loo xws li cucumbers. Cov transpiration coefficient- uas ntsuas dej ntau npaum li cas los tsim 1 gram ntawm cov khoom qhuav - yog nyob ib ncig ntawm:
- 90-120 rau txiv lws suav
- 80-236 rau qos yaj ywm
- 250-360 rau cucumbers
Qhov no txhais tau tias qos yaj ywm yog dej-intensive, tab sis lub sij hawm thiab kev sib haum xeeb yog qhov tseem ceeb.
Kev phom sij ntawm Early Irrigation
Thaum ntxov, dej ntau (txoj cai tom qab tshwm sim) tuaj yeem ncua kev tsim tuber thiab thawb cov hauv paus kev loj hlob mus rau txheej txheej saum toj kawg nkaus, ua rau cov hauv paus hniav muaj kev phom sij rau:
- Overheating nyob rau hauv high kub
- Kev ziab sai ntawm cov av txheej saum toj kawg nkaus
- Stunted los yog uneven tuber loj hlob
Qhov tshwm sim? Hloov cov qoob loo sib xws, cov neeg cog qoob loo yuav xaus nrog ob peb tub loj thiab ntau me me, los yog phem tshaj - me me tubers qhov loj ntawm peas.
Thaum twg thiab yuav ua li cas dej kom raug
Agronomists pom zoo ncua thawj irrigation kom txog thaum qos yaj ywm saum ncav cuag 10-15 cm. Nyob rau theem no, cov nroj tsuag pib nquag vegetative loj hlob, thiab qhov xav tau rau sab nraud noo noo nce.
Irrigation Guidelines:
- Zaus: Txhua 5-7 hnub lossis tsawg dua, nyob ntawm hom av thiab huab cua
- Intensity: Nruab nrab tab sis txaus, zam dej nyab
- Lub hom phiaj: Ua kom cov av noo nyob ruaj khov yam tsis tas yuav ziab ntev ntev lossis saturation
cov theem tseem ceeb rau irrigation yog lig budding los ntawm tag nrho floweringthaum stolon tsim thiab tuber bulking nyob rau ntawm lawv lub ncov. Kev ntxhov siab dej thaum lub sijhawm no tuaj yeem txiav tawm los ntawm 30% lossis ntau dua, uas yog qhov nyuaj rau rov qab los ntawm lub caij nyoog.
Kev Tshawb Fawb
Kev tshawb fawb luam tawm hauv Agricultural Water Management (2022) lees paub qhov ntawd irrigation thaum pib tubers thiab bulking theem muaj qhov zoo tshaj plaws cuam tshuam rau qos yaj ywm yield thiab zoo. Thaum ntxov-theem overwatering tshwm sim tsis muaj cov txiaj ntsig tseem ceeb thiab qee zaum coj mus rau kab mob siab thiab pluag paus kev loj hlob.
Qos yaj ywm yog cov qoob loo nyiam dej-tab sis dej thaum lub sijhawm tsis raug tuaj yeem ua rau muaj kev puas tsuaj ntau dua li dej nag. Kev tswj xyuas thaum ntxov ua raws li lub sijhawm zoo, kev siv dej me me thaum lub sijhawm loj hlob tseem ceeb yuav pab koj kom tsis txhob muaj cov hauv paus ntiav, cov tubers tsis sib xws, thiab cov qoob loo loj heev. Mastering irrigation timeing yog ib qho ntawm cov cuab yeej muaj zog tshaj plaws hauv txhua cov qos yaj ywm cog qoob loo.
