Koj paub ntau npaum li cas txog zaub ntxov ntxov hauv tsev cog khoom zaub

Koj paub ntau npaum li cas txog zaub ua ntej kev laus hauv tsev cog khoom zaub?

1. Kev laus ntxov ntxov yog dab tsi?

Lub senescence ntxov ntxov yog lub senescence ntawm cov qoob loo nyob rau hauv lub sij hawm loj hlob zoo ntawm physiological thiab biochemical txheej txheem ua ntej tshaj li ntawm cov nroj tsuag ib txwm, nplooj yellowing, photosynthesis raug tso tseg ntxov ntxov, thiab cov nroj tsuag tuag ntxov ntxov, uas cuam tshuam rau yield thiab zoo ntawm cov qoob loo thiab coj teeb meem loj rau. zaub zaub ntsuab ntau lawm. poob loj.

2. Ua li cas rau kev laus ntxov ntxov?

Thaum cov qoob loo tshwm sim ntxov ntxov, thawj zaug yog yellowing ntawm nplooj hauv qab, ntxov ntxov daj me ntsis thiab curling ntawm nplooj, thiab thaum kawg lub yellowing ntawm tag nrho cov nplooj, uas cuam tshuam rau lub cev physiological functional nplooj, uas nyob rau hauv lem txo cov qoob loo photosynthesis, ua rau cov qoob loo loj hlob tsis zoo thiab tawm los. Tsawg.

3. Dab tsi yog qhov ua rau cov qoob loo ntxov ntxov ntxov?

Nyob rau hauv xyoo tas los no, senescence ntxov ntxov ntawm cov qoob loo yog ib txwm muaj, thiab kev puas tsuaj los ntawm premature senescence yeej txwv tsis pub tawm los ntawm cov qoob loo. Nyob rau hauv cov txheej txheem ntawm kev loj hlob ntawm cov qoob loo, yog tias muaj teeb meem xws li kev loj hlob qeeb thiab yellowing ntawm cov nplooj ua haujlwm tshwm sim los ntawm cov chiv tsis txaus thiab dej, kev noj zaub mov tsis zoo, thiab lwm yam inhibit qhov kev loj hlob ntawm cov qoob loo, qhov no, qhov tshwm sim ntawm cov qoob loo loj hlob poob yuav tshwm sim. Nyob rau tib lub sijhawm, vim muaj ib puag ncig xws li kub siab, dej ntxhov siab, lub teeb thiab lwm yam kev nyuaj siab lossis cov tshuaj hormones, kev siv tshuaj tsis raug thiab lwm yam yuav ua rau cov qoob loo ntxov ntxov.

Dab tsi ua rau kev laus ntxov ntxov hauv cov zaub ntsuab?

1. Qhov tsis muaj kab nyob rau hauv kev tsim kho ntawm tsev cog khoom ua rau yellowing ntawm nplooj, ib tug txo nyob rau hauv photosynthetic efficiency, thiab txwv txoj kev loj hlob ntawm cov qoob loo nrog rau cov loj-scale daim ntawv thov ntawm cov tshuaj chiv thiab kev nruam txhim kho ntawm cov qoob loo yields, noj nruab nrab. thiab kab kawm magnesium (Mg) thiab zinc (Zn) yog nce txhua xyoo; los yog vim qhov kev tawm tsam ntawm cov ntsiab lus, xws li potassium (K) thiab magnesium (Mg), phosphorus (P) thiab zinc (Zn), ua rau tsis txaus nqus ntawm cov khoom nruab nrab thiab kab kawm los ntawm cov qoob loo, ua rau txo qis hauv photosynthetic efficiency, txwv los yog cuam tshuam cov qoob loo loj hlob, thiab ua rau cov qoob loo ntxov ntxov senescence.

Qhov tsis muaj kab mob xws li magnesium (Mg) thiab zinc (Zn) ua rau yellowing ntawm nplooj, cuam tshuam rau cov photosynthetic tus nqi, txwv kev loj hlob ntawm cov qoob loo, thiab ua rau kom poob tawm.

2. Kev noj zaub mov tsis zoo ua rau cov qoob loo physiological poob qis, uas yog qhov laj thawj tseem ceeb rau cov qoob loo ntxov ntxov ntxov.

Cov qoob loo feem ntau raug kev txom nyem los ntawm kev loj hlob stunted thiab yellowing ntawm cov nplooj ua haujlwm vim yog cov khoom noj tsis tsim nyog thiab cov khoom noj tsis sib haum, ua rau lawv poob rau hauv lawv lub cev, ua rau cov qoob loo ntxov ntxov, thiab txo cov qoob loo.

3. Kev nyuaj siab ntxhov plawv ua rau kev loj hlob ntawm cov qoob loo raug txwv thiab ua rau cov qoob loo ntxov ntxov ntxov.

Nyob rau hauv cov txheej txheem ntawm kev loj hlob ntawm cov qoob loo, nws yog inevitable ntsib kev nyuaj siab xws li tsis tshua muaj kub, siab kub, drought, thiab lwm yam kev puas tsuaj ntawm cov nyom rau cov nroj tsuag yog manifested nyob rau hauv lub cell dehydration, daim nyias nyias system puas, thiab enzymatic kev ua si cuam tshuam, uas ua rau muaj kev cuam tshuam rau cov nroj tsuag. cell metabolism tsis meej thiab ua rau kev puas tsuaj rau cov qoob loo. cov teebmeem, uas nyob rau hauv lem ua rau ntxov senescence ntawm cov qoob loo.