Ukukhuthaza ukuvuthwa kwezithelo kusenesikhathi nokwandisa ukunqwabelana kwento eyomile lezi zigaba ezilandelayo zokulawula ukukhula kwezitshalo zingakhethwa.

1. I-Ethephon

Umsebenzi: Ikhipha i-ethylene, ekhuthaza ngokuqondile ukuvuthwa kwezithelo, ukuthuthukiswa kombala, nokuthambisa, ngaleyo ndlela ifinyeze kakhulu isikhathi sokuvuthwa. Ngesikhathi esifanayo, ithuthukisa ukudluliselwa kwemikhiqizo ye-photosynthetic esithelweni, ikhuphule ngokungaqondile ukunqwabelana kwezinto ezomile.

Izitshalo Ezisebenzayo: Izithelo ze-climacteric ezifana nobhanana, utamatisi, amawolintshi, umango, ama-loquats, njll.
Ukugxila Kwesicelo:** Ivamise ukusetshenziswa njengesixazululo esingu-0.1%–0.3% ngokufafaza izithelo noma ukudipha; ukunakekelwa kufanele kuthathwe ukuze kugwenywe i-phytotoxicity (isb., Ukwehla kwezithelo noma ukugqama okubangelwa ukugxila ngokweqile).


2. I-Triacontanol

Umsebenzi:Ithuthukisa i-photosynthesis, yandisa okuqukethwe kwe-chlorophyll, futhi ikhuphula umsebenzi we-amylase, ngaleyo ndlela ikhuthaze ukunqwabelana kwezinto ezomile futhi ikhuthaze ukuvuthwa kwezitshalo ngaphambi kwesikhathi.
Indlela Yokufaka Isicelo: Fafaza i-Foliar ekuhlanganiseni kuka-0.5 ppm (okungukuthi, 0.5 mg/L). Ukuze uthole imiphumela emihle, sebenzisa kanye ngesikhathi sokuqhakaza kwezimbali kanye nangesikhathi sokuqhakaza okugcwele.

3. I-Diethyl aminoethyl hexanoate (DA-6)

Umsebenzi: Khulisa amazinga e-photosynthetic, ithuthukisa i-carbon ne-nitrogen metabolism, futhi ibambezele ukuvela kwe-senescence; ikhuthaza ukuvuthwa kusenesikhathi, ukwanda kwesivuno, kanye nokuthuthukiswa kwekhwalithi. Ifanele ukusetshenziswa kuwo wonke umjikelezo wokukhula futhi ihlala isebenza kahle ngaphansi kwezimo eziphansi lokushisa.
Ukugxila Okunconyiwe: 10–20 mg/L; sebenzisa ngokufafaza izikhathi ezingu-2-3 phakathi nesiteji sesithelo esincane kanye nesiteji sokwandisa izithelo.

4. I-Brassinolide

Umsebenzi: Ithuthukisa ukunwetshwa kwamangqamuzana nokuhlukana, ikhuphule izinga lokumiswa kwezithelo kanye nesisindo somuntu ngamunye sesithelo, futhi ithuthukise ukufana kwezithelo nokuba umbala; isheshisa ukuvuthwa ngo-25%–40%.
Isikhathi Sokufaka Isicelo: Faka isicelo ngokufafaza phakathi nesigaba sokuqala sokuqhakaza, isigaba sezithelo ezincane, kanye nesigaba sokukhula kwezithelo.


5. I-Forchlorfenuron (KT-30, CPPU)

Umsebenzi: Nakuba yaziwa ngokuyinhloko ngokukhuthaza ukukhuliswa kwesithelo kanye nokugcina izimbali nezithelo, futhi ingasekela ngokungaqondile ukuvuthwa kwangaphambi kwesikhathi kanye nokuthuthukiswa kwekhwalithi ngokugqugquzela ukuhlukana kwamaseli nokuqondisa ukwabiwa kwento eyomile. (Qaphela: Ukusetshenziswa ngokweqile kungase kubambezele ukukhula kombala.)