Low kawopsedwe, palibe zotsalira zobiriwira zomera kukula chowongolera - prohexadione calcium

Prohexadione ndi mtundu watsopano wowongolera kukula kwa mbewu wa cyclohexane carboxylic acid.Idapangidwa mogwirizana ndi Japan Combination Chemical Viwanda Co., Ltd. ndi BASF yaku Germany.Imalepheretsa biosynthesis ya gibberellin mu zomera ndikupanga zomera Zomwe zili ndi gibberellin zimachepetsedwa, motero zimachedwetsa ndikuwongolera kukula kwa miyendo ya zomera.Amagwiritsidwa ntchito makamaka mu mbewu za phala, monga tirigu, balere, kukana kugona kwa mpunga, amathanso kugwiritsidwa ntchito ngati mtedza, maluwa ndi kapinga kuti azitha kukula.

1 Chidziwitso cha Zamalonda

Chinese wamba dzina: procyclonic asidi calcium

Dzina lachingerezi: Prohexadione-calcium

Dzina lophatikiza: calcium 3-oxo-5-oxo-4-propionylcyclohex-3-enecarboxylate

Nambala yolowa ya CAS: 127277-53-6

Mapangidwe a maselo: C10H10CaO5

Mamolekyu achibale: 250.3

Zomangamanga:

Thupi ndi mankhwala katundu: Maonekedwe: ufa woyera;malo osungunuka>360 ℃;kuthamanga kwa nthunzi: 1.74 × 10-5 Pa (20 ℃);octanol/gawo logawa madzi: Kow lgP=-2.90 (20℃);kachulukidwe: 1.435 g/mL;Nthawi zonse Henry: 1.92 × 10-5 Pa m3mol-1 (calc.).Kusungunuka (20 ℃): 174 mg/L m'madzi osungunuka;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/L0.Kukhazikika: kutentha kokhazikika mpaka 180 ℃;hydrolysis DT50<5 d (pH = 4, 20 ℃), 21 d (pH7, 20 ℃), 89 d (pH9, 25 ℃);m'madzi achilengedwe, madzi photolysis DT50 ndi 6.3 d, photolysis DT50 m'madzi osungunuka anali 2.7 d (29～34 ℃, 0.25W/m2).

Kawopsedwe: The choyambirira mankhwala prohexadione ndi otsika kawopsedwe mankhwala.Pakamwa pakamwa LD50 (mwamuna/mwayi) wa makoswe ndi> 5,000 mg/kg, LD50 yoopsa (mwamuna/mwayi) ya makoswe ndi> 2,000 mg/kg, ndi LD50 yapakamwa ya makoswe (mwamuna/mwayi) ndi> 2,000 mg / kg.Kupuma kawopsedwe LC50 (maola 4, amuna/akazi)> 4.21 mg/L.Nthawi yomweyo, imakhala ndi kawopsedwe wochepa ku zamoyo zachilengedwe monga mbalame, nsomba, utitiri wamadzi, algae, njuchi, ndi nyongolotsi.

Njira yochitira: Posokoneza kaphatikizidwe ka gibberellic acid muzomera, imachepetsa zomwe zili mu gibberellic acid muzomera, imawongolera kukula kwa miyendo, imalimbikitsa maluwa ndi fruiting, imachulukitsa zokolola, imakulitsa mizu, imateteza nembanemba zama cell ndi nembanemba za organelle, ndikuwongolera. kukana kupsinjika kwa mbewu.Kuti ziletsa kukula kwa vegetative kumtunda kwa mbewu ndikulimbikitsa kukula kwa uchembere.

2 Kulembetsa

Malinga ndi kafukufuku wa China Pesticide Information Network, kuyambira Januware 2022, zinthu zonse 11 za prohexadione calcium zidalembetsedwa m'dziko langa, kuphatikiza mankhwala atatu aukadaulo ndi zokonzekera 8, monga momwe tawonetsera pa Gulu 1.

Table 1 Kulembetsa kwa prohexadione calcium m'dziko langa

3 Zoyembekeza za msika

Monga chowongolera kukula kwa zomera zobiriwira, prohexadione calcium ndi yofanana ndi olamulira a kukula kwa zomera paclobutrazol, niconazole ndi trinexapac-ethyl.Imalepheretsa biosynthesis ya gibberellic acid muzomera, ndipo imathandizira kukulitsa mbewu, Udindo wowongolera kukula kwa mbewu.Komabe, prohexadione-calcium alibe zotsalira pa zomera, palibe kuipitsidwa kwa chilengedwe, ndi zochepa zimakhudza mbewu wotsatira ndi zomera sanali chandamale.Zinganenedwe kuti ili ndi chiyembekezo chogwiritsa ntchito kwambiri.