I-salicylic acid idlala izindima eziningi kwezolimo, okuhlanganisa ukuba umlawuli wokukhula kwezitshalo, isibulala-zinambuzane, kanye nesibulala-magciwane.
I-salicylic acid,njengoba aisilawuli sokukhula kwezitshalo,idlala indima ebalulekile ekukhuthazeni ukukhula kwezitshalo nokwandisa isivuno sezitshalo. Ingathuthukisa ukwakheka kwamahomoni ezitshalweni, isheshise ukukhula nokuhlukana kwazo, futhi isize izitshalo ukuzivumelanisa nezinguquko zemvelo. I-salicylic acid ingavimbela ngempumelelo ukunwetshwa kwamathiphu ezitshalo, yenze izitshalo ziqine futhi inciphise ukuvela kwezifo nezinambuzane. Ngaphandle kokuba isilawuli sokukhula kwezitshalo, i-salicylic acid ingasetshenziswa njengesibulala-zinambuzane. Emkhakheni wezolimo, izibonelo ezijwayelekile zifaka i-acetylsalicylic acid ne-sodium salicylate. Lawa makhemikhali angabulala ngempumelelo izinambuzane nezifo ezibulala izitshalo, avikele ukukhula kwezitshalo. Emkhakheni wezokwelapha, i-salicylic acid nayo iyisidakamizwa esivamile sokulwa nezifo. Emkhakheni wezolimo, i-salicylic acid isetshenziselwa ukuvimbela izifo ezithathelwanayo ezilwaneni. Ngasikhathi sinye, i-salicylic acid ingathuthukisa ukumelana nezifo kanye nesikhathi sokugcinwa kwemikhiqizo yezolimo.
I-Salicylic Acid (efushanisiwe ngokuthi i-SA) ayisona isibulala-zinambuzane sendabuko (njengesibulala-zinambuzane, isibulala-sikhunta, noma isibulala-zinambuzane) kwezolimo. Nokho, idlala indima ebaluleke kakhulu endleleni yokuvikela izitshalo kanye nokulawula ukumelana nokucindezeleka. Eminyakeni yamuva nje, i-salicylic acid iye yacwaningwa kabanzi futhi yasetshenziswa kwezolimo njenge-immune inducer yezitshalo noma i-biological stimulant, futhi inemisebenzi emikhulu elandelayo:
1. Ukwenziwa kusebenze kweplanti systemic gained resistance (SAR)
I-salicylic acid iyingqamuzana elibonisa ngokwemvelo ezitshalweni, elinqwabelana ngokushesha ngemva kokutheleleka nge-pathogen.
Ingenza kusebenze i-systemic gained resistance (SAR), ibangele sonke isitshalo ukuthi sihlakulele ukumelana ne-spectrum ebanzi ngokumelene namagciwane ahlukahlukene (ikakhulukazi isikhunta, amagciwane, namagciwane).
2. Thuthukisa ukubekezelelana kwezitshalo ekucindezelekeni okungezona izinto eziphilayo
I-salicylic acid ingathuthukisa ukubekezelelana kwezitshalo ezingcindezini ezingezona ezebhayoloji njengesomiso, usawoti omningi, izinga lokushisa eliphansi, izinga lokushisa eliphezulu, nokungcoliswa kwensimbi esindayo.
Izindlela zihlanganisa: ukulawula umsebenzi we-antioxidant enzymes (njenge-SOD, i-POD, i-CAT), ukugcina ukuzinza kwamangqamuzana e-cell, nokukhuthaza ukuqoqwa kwezinto zokulawula i-osmotic (njenge-proline, ushukela oncibilikayo), njll.
3. Ukulawula ukukhula nokukhula kwezitshalo
Ukugxila okuphansi kwe-salicylic acid kungakhuthaza ukuhluma kwembewu, ukukhula kwezimpande kanye ne-photosynthesis.
Ukugxila okuphezulu, nokho, kungase kuvimbele ukukhula, okubonisa "umphumela we-hormone biphasic" (umphumela we-hormesis).
4. Njengengxenye yesu lokulawula okuluhlaza
Nakuba i-salicylic acid ngokwayo ingenawo amandla okubulala ngokuqondile amagciwane e-pathogenic, inganciphisa ukusetshenziswa kwezibulala-zinambuzane zamakhemikhali ngokuheha isimiso sokuzivikela sesitshalo.
Ivamise ukusetshenziswa ngokuhlanganiswa nezinye izinto eziphilayo (njenge-chitosan, i-jasmonic acid) ukuze kuthuthukiswe ukusebenza kahle.
Amafomu okufaka izicelo okuyiwona
Ukufafaza kwamaqabunga: Ukugxila okuvamile ngu-0.1–1.0 mM (cishe ku-14–140 mg/L), okungalungiswa kuye ngohlobo lwesitshalo kanye nenjongo.
Ukwelashwa kwembewu: Ukucwiliswa kwembewu ukuthuthukisa ukumelana nezifo kanye nezinga lokuhluma.
Ukuxuba nezibulala-zinambuzane: Ukuthuthukisa ukumelana nezitshalo kuzo zonke izifo kanye nokwandisa ukusebenza kahle kwesibulala-zinambuzane.
Amanothi Okunakwa
Ukugxila ngokweqile kungase kubangele i-phytotoxicity (njengokushiswa kwamaqabunga kanye nokuvimbela ukukhula).
Umphumela uthonywa kakhulu izimo zemvelo (izinga lokushisa, umswakama), izinhlobo zezitshalo kanye nesikhathi sokufaka isicelo.
Njengamanje, i-salicylic acid ayikabhaliswa ngokusemthethweni njengesibulala-zinambuzane e-China nakwamanye amazwe amaningi. Isetshenziswa kakhulu njengesilawuli sokukhula kwezitshalo noma isikhuthazi sebhayoloji.
Isifinyezo
Inani eliyisisekelo le-salicylic acid kwezolimo “lisekuvikeleni izitshalo ngezitshalo” – ngokwenza kusebenze amasosha omzimba ezitshalo ukuze amelane nezifo nezimo ezimbi. Kuyinto esebenzayo ehambisana nemiqondo yezolimo eziluhlaza kanye nentuthuko esimeme. Nakuba kungesona isibulala-zinambuzane esivamile, sinamandla amakhulu ekulawuleni izinambuzane ezihlangene (IPM).
Isikhathi sokuthumela: Nov-13-2025