Chefo e tlase, ha ho na masalla a taolo ya kgolo ya dimela tse tala – prohexadione calcium

Prohexadione ke mofuta o mocha oa taolo ea kholo ea limela ea cyclohexane carboxylic acid. E ntlafalitsoe ka kopanelo ke Japane Combination Chemical Industry Co., Ltd. le BASF ea Jeremane. E thibela biosynthesis ea gibberellin limela 'me e etsa hore limela li be le tekanyo ea gibberellin, ka hona e liehisa le ho laola kholo e matla ea limela. Haholo-holo e sebelisoang lijalo tsa lijo-thollo, tse kang koro, harese, ho hanyetsa raese, e ka boela ea sebelisoa lipeong, lipalesa le joang ho laola kholo ea tsona.

Selelekela sa Sehlahisoa sa 1

Lebitso le tloaelehileng la Sechaena: procyclonic acid calcium

Lebitso le tloaelehileng la Senyesemane: Prohexadione-calcium

Lebitso la motsoako: calcium 3-oxo-5-oxo-4-propionylcyclohex-3-enecarboxylate

Nomoro ea kamohelo ea CAS: 127277-53-6

Foromo ea limolek'hule: C10H10CaO5

Boima ba limolek'hule bo amanang: 250.3

Foromo ea sebopeho:

Litšobotsi tsa 'mele le tsa lik'hemik'hale: Ponahalo: phofo e tšoeu; ntlha ea ho qhibiliha >360℃; khatello ea mouoane: 1.74×10-5 Pa (20℃); coefficient ea karohano ea octanol/metsi: Kow lgP=-2.90 (20℃); bongata: 1.435 g/mL; Henry's constant: 1.92 × 10-5 Pa m3mol-1 (calc.). Ho qhibiliha (20℃): 174 mg/L ka metsing a hloekisitsoeng; methanol 1.11 mg/L, acetone 0.038 mg/L, n-hexane 0.003 mg/L, toluene 0.004 mg/L, ethyl acetate 0.010 mg/L, iso Propanol 0.105 mg/L, dichloromethane 0.004 mg/L. Botsitso: mocheso o tsitsitseng ho fihlela ho 180℃; hydrolysis DT50<5 d (pH=4, 20℃), 21 d (pH7, 20℃), 89 d (pH9, 25℃); metsing a tlhaho, fotolysis ea metsi DT50 ke 6.3 d, photolysis DT50 metsing a hloekisitsoeng e ne e le 2.7 d (29~34℃, 0.25W/m2).

Chefo: Moriana oa pele oa prohexadione ke chefo e bolaeang likokoanyana e nang le chefo e tlase. LD50 e bohale ea molomo (e tona/e tšehali) ea likhoto ke >5,000 mg/kg, LD50 e bohale ea percutaneous (e tona/e tšehali) ea likhoto ke >2,000 mg/kg, 'me LD50 e bohale ea molomo ea likhoto (e tona/e tšehali) ke >2,000 mg/kg. Chefo ea ho hema LC50 (lihora tse 4, e tona/e tšehali)> 4.21 mg/L. Ka nako e ts'oanang, e na le chefo e tlase ho lintho tse phelang tikolohong tse kang linonyana, litlhapi, li-water fleas, bolele, linotši le liboko tsa lefats'e.

Mokhoa oa ts'ebetso: Ka ho sitisa tlhahiso ea asiti ea gibberellic limela, e fokotsa bongata ba asiti ea gibberellic limela, e laola kholo e matla, e khothalletsa lipalesa le ho beha litholoana, e eketsa chai, e ntlafatsa litsamaiso tsa metso, e sireletsa lera la sele le lera la organelle, 'me e ntlafatsa ho hanyetsa khatello ea lijalo. E le ho thibela kholo ea limela karolong e ka holimo ea semela le ho khothaletsa kholo ea ho ikatisa.

2 Ngoliso

Ho ya ka dipatlisiso tsa China Pesticide Information Network, ho tloha ka Pherekgong 2022, dihlahiswa tse 11 tsa prohexadione calcium di ngodisitswe naheng ya heso, ho kenyeletswa le meriana e 3 ya botekgeniki le ditokisetso tse 8, jwalo ka ha ho bontshitswe ho Tafole ya 1.

Tafole ea 1 Ngoliso ea prohexadione calcium naheng ea heso

3 Menyetla ea 'maraka

Jwalo ka taolo ya kgolo ya dimela tse tala, prohexadione calcium e tshwana le taolo ya kgolo ya dimela ya paclobutrazol, niconazole le trinexapac-ethyl. E thibela tlhahiso ya gibberellic acid dimeleng, mme e bapala karolo ho fokotseng dijalo, Karolo ya ho laola kgolo ya dimela. Leha ho le jwalo, prohexadione-calcium ha e na masalla dimeleng, ha e na tshilafatso tikolohong, mme e na le tshusumetso e nyane dijalong tse latelang le dimeleng tse sa rerelwang. Ho ka bolelwa hore e na le tebello e pharaletseng ya tshebediso.