Nyob rau hauv xyoo tas los no, kev tiv thaiv ntawm cov nroj tsuag hauv cov nplej tau nce xyoo los ntawm xyoo. Yog tias cov av tsis raug kaw kom zoo, nws yuav ua rau muaj kev kub ntxhov rau cov nroj tsuag tom qab tshwm sim. Tom ntej no, peb yuav qhia rau koj Pyroxasulfone, ib qho zoo heev sealing herbicide rau cov nplej teb.
Pyroxasulfone yog ib tug tshiab broad-spectrum, muaj zog ua ntej-emergent av kho neeg sawv cev tsim los ntawm Nyiv Combination Chemical Company. Nyob rau hauv chav kawm imidazole herbicide, nws muaj ntau hom kev tswj cov nroj tsuag thiab tuaj yeem tswj tau cov nroj tsuag hauv tsev neeg Poaceae xws li Setaria, Datang, Echinochloa, Echinochloa, Ryegrass, thiab Lolium, nrog rau cov nplooj dav dav xws li Amaranth. , Mandala, Solanum, Abutilon, Wild Pea, Sophora, thiab Zicao. Pyroxasulfone tau nyiam ntau thiab ntau dua vim nws cov yam ntxwv zoo heev xws li kev siv tshuaj tua kab mob dav dav, kev siv tshuaj tsawg, kev ua haujlwm siab, thiab kev nyab xeeb zoo.
Lub sij hawm patent rau Pyroxasulfone compounds yuav tas rau lub Ob Hlis 6, 2022, thiab cov txheej txheem patents yuav tsum tas sij hawm ntawm 2027 thiab 2032. Nyob rau hauv xyoo tas los no, kaw tshuaj tua kab tau sau npe nyob rau hauv Australia, Tebchaws Asmeskas, Canada thiab lwm lub tebchaws siv rau hauv nplej, pob kws, taum pauv, paj rwb thiab lwm yam qoob loo.
Mechanism ntawm kev ua
Pyroxasulfone yog ib tug ntev-chain fatty acid elongation synthase inhibitor herbicide. Pyroxasulfone yog absorbed los ntawm cov tub ntxhais hluas cov hauv paus hniav los yog tua ntawm cov nroj tsuag tom qab thov. Los ntawm inhibiting lub biosynthesis ntawm heev-ntev-siv fatty acid elongase (VLCFAE), nws ua rau kev tsim kho ntawm fatty acid precursors. Nws tuaj yeem cuam tshuam qhov kev loj hlob ntawm cov nroj tsuag thaum ntxov, rhuav tshem cov meristem thiab coleoptile, thiab siv nws cov txiaj ntsig tshuaj.
Cov txheej txheem ntawm kev ua ntawm Pyroxasulfone zoo ib yam li cov tshuaj chloroacetamide tshuaj tua kab xws li acetochlor thiab metolachlor. Txawm li cas los xij, nws yog siv rau ntau hom qoob loo, nws cov haujlwm lom neeg muaj ntau dua li ntawm acetochlor thiab metolachlor, thiab nws qhov ntau npaum li cas qis dua. Nws qhov ntau npaum li cas hauv ib cheeb tsam yog 8 mus rau 10 npaug qis dua li ntawm acetochlor thiab lwm yam tshuaj tua kab mob chloroacetamide, yog li nws cov txiaj ntsig zoo dua. Txij li thaum txoj kev vam meej ntawm ntau yam no, nws tau siv dav hauv ntau hom qoob loo thiab muaj kev tswj xyuas dav dav. Nws muaj cov txiaj ntsig zoo ntawm cov nroj tsuag txhua xyoo thiab cov nplooj dav dav hauv ntau hom qoob loo, thiab tau txais txiaj ntsig zoo thiab qhuas los ntawm cov neeg siv. Raws li qhov xwm txheej tam sim no uas acetochlor thiab metolachlor raug txwv hauv European Union, thiab vim tias tsis muaj kev nyab xeeb ntawm chloroacetamide herbicides, qhov loj tshaj plaws-muag tshuaj tua kab hauv kuv lub teb chaws, kev siv mus sij hawm ntev ua rau muaj kev tiv thaiv ntau ntxiv, thiab cov tshuaj tua kab mob phem zuj zus tuaj. thiab phem dua. Yog li ntawd, Pyroxasulfone yuav muaj peev xwm hloov tau cov tshuaj chloroacetamide uas siv dav xws li acetochlor thiab metolachlor thiab dhau los ua cov tshuaj kho av ntau yam.
Dab tsi yog cov yam ntxwv ntawm Pyroxasulfone?
1. Nws tua cov nroj tsuag nrog dav dav. Pyroxasulfone tuaj yeem tswj tau cov nroj tsuag nyom xws li Setaria spp., crabgrass, Echinacea genus, Panax spp., thiab broadleaf weeds xws li Amaranthus spp., Datura spp., Solanum spp., Amaranthus spp., thiab Chenopodium. , npog yuav luag txhua cov nroj tsuag tseem ceeb hauv cov teb qhuav hauv kuv lub tebchaws.
2. Kev siv ntau yam, haum rau ntau hom qoob loo. Pyroxasulfone yog tsim rau ntau hom qoob loo thiab siv tau rau pob kws, taum pauv, paj rwb, hom qoob mog, paj noob hlis, qos yaj ywm, txiv laum huab xeeb thiab lwm cov qoob loo ntau los tswj cov nyom txhua xyoo thiab cov nplooj dav dav. Nws tsis tshua pom muaj ntau yam ntawm cov qoob loo siv tau ntawm cov npe tshuaj tua kab mob.
3. Kev tiv thaiv zoo thiab ua haujlwm ntev. Raws li cov txiaj ntsig ntawm kev xeem hauv tsev thiab txawv teb chaws, cov tshuaj tua kab mob ntawm Pyroxasulfone zoo ib yam li cov tshuaj chloroacetamide tshuaj tua kab xws li acetochlor thiab metolachlor. Txawm li cas los xij, nws cov kev tswj xyuas yuav luag txhua cov nroj tsuag xws li ragweed, ragweed, broad-leaved brachiaria, millet, thiab foxtail nyom zoo dua li metolachlor, thiab cov nyhuv tswj tau ruaj khov rau 63 hnub tom qab txau. Nyob rau hauv drought tej yam kev mob, nws cov hauj lwm zoo ntawm kev tswj ntsuab foxtail, tribulus terrestris thiab amaranth yog zoo dua li metolachlor; Kev tswj hwm qis ntawm ntau yam nroj tsuag kuj muaj lub sijhawm ntev dua.
4. Kev ua haujlwm siab thiab noj tsawg. Nws tuaj yeem siv tau zoo rau ntau yam qoob loo hauv cov teb qhuav, xws li pob kws, taum pauv, paj rwb, txiv laum huab xeeb, nplej, paj noob hlis, qos yaj ywm, thiab lwm yam. Qhov ntau npaum li cas ntawm ib cheeb tsam yog 125 ~ 250g ai / hm2. Qhov ntau npaum li cas yog 8 mus rau 10 npaug qis dua metolachlor thiab acetochlor, sib npaug rau 12% ntawm cov tshuaj S-metolachlor thiab 10% ntawm cov tshuaj acetochlor. Cov nyhuv weeding yog zoo heev.
5. Zoo mixability nrog lwm yam tshuaj tua kab mob. Cov kws tshawb fawb hauv tsev thiab txawv teb chaws tau ua pov thawj tias nws muaj kev sib xyaw ua ke. Piv txwv li, thaum tov nrog disulfuron-methyl, flufenacet, atrazine, penfentrazone, ethyl ethyl methyl ester, saflufenacil, propargyl flufenacet, sulfentrafen, thiab lwm yam. Siv rau cov qoob loo sib xws, cov txiaj ntsig zoo ntawm cov nroj tsuag tuaj yeem tau txais.
Cov ntsiab lus
Cov tshuaj tua kab kaw tuaj yeem txo qhov siab ntawm cov nroj tsuag tom qab tshwm sim thiab ua tiav ob zaug ntawm qhov tshwm sim nrog ib nrab ntawm kev siv zog, yog li xaiv cov tshuaj tua kab mob zoo heev yog qhov tseem ceeb tshwj xeeb. Pyroxasulfone muaj tsawg npaum li cas, kev ua haujlwm siab, kev tswj dav thiab ua haujlwm ntev. Nws tuaj yeem ua tau raws li qhov xav tau ntawm cov nroj tsuag kaw thiab tsim nyog ntawm qhov kev cia siab thiab kev xaiv ntawm feem ntau ntawm cov phooj ywg cog.
