Kuyerekeza pakati pa Dimethalin ndi Opikisana nawo
Dimethylpentyl ndi dinitroaniline herbicide. Iwo makamaka odzipereka ndi kumera udzu masamba ndi pamodzi ndi microtubule mapuloteni mu zomera ziletsa mitosis wa zomera maselo, chifukwa mu imfa ya namsongole. Amagwiritsidwa ntchito makamaka m'minda yambiri yowuma, kuphatikizapo thonje ndi chimanga, komanso m'minda ya mbande za mpunga wouma. Poyerekeza ndi zinthu zomwe zikuchita mpikisano acetochlor ndi trifluralin, dimethalin ili ndi chitetezo chokwanira, chomwe chimagwirizana ndi chitukuko cha chitetezo cha mankhwala ophera tizilombo, kuteteza chilengedwe komanso kawopsedwe kakang'ono. Akuyembekezeka kupitiliza kusintha acetochlor ndi trifluralin mtsogolomo.
Dimethalin ali ndi makhalidwe apamwamba ntchito, sipekitiramu yotakata kupha udzu, otsika kawopsedwe ndi zotsalira, chitetezo mkulu kwa anthu ndi nyama, ndi adsorption amphamvu nthaka, si zosavuta leach, ndi zachilengedwe; Itha kugwiritsidwa ntchito isanamere komanso itatha kumera komanso musanayike, ndipo nthawi yake ndi masiku 45-60. Ntchito imodzi imatha kuthetsa kuwonongeka kwa udzu panthawi yonse yakukula kwa mbewu.
Kuwunika pakukula kwa msika wapadziko lonse wa dimethalin
1. Gawo la mankhwala a herbicide padziko lonse lapansi
Pakalipano, mankhwala ophera udzu omwe amagwiritsidwa ntchito kwambiri ndi glyphosate, omwe amawerengera pafupifupi 18% ya msika wapadziko lonse wa herbicides. Chachiwiri cha herbicide ndi glyphosate, chomwe chimangokhala 3% yokha ya msika wapadziko lonse lapansi. Mankhwala ena ophera tizilombo ndi ochepa kwambiri. Chifukwa glyphosate ndi mankhwala ena ophera tizilombo makamaka amagwira mbewu transgenic. Mankhwala ambiri ophera udzu omwe amafunikira popanga mbewu zina zosakhala za GM amakhala osakwana 1%, kotero kuchuluka kwa msika wa herbicides ndikotsika. Pakalipano, msika wapadziko lonse wa dimethalin ukufunika kwambiri kuposa matani 40,000, mtengo wapakati ukuyembekezeka kukhala 55,000 yuan/tani, ndipo kuchuluka kwa malonda pamsika ndi pafupifupi madola 400 miliyoni, kuwerengera 1% ~ 2% ya msika wapadziko lonse wa herbicide. sikelo. Popeza itha kugwiritsidwa ntchito m'malo mwa mankhwala ophera udzu mtsogolo, msika ukuyembekezeka kuwirikiza kawiri chifukwa cha kukula kwake kwakukulu.
2. Kugulitsa kwa dimethalin
Mu 2019, kugulitsa kwa dimethalin padziko lonse lapansi kunali madola 397 miliyoni aku US, zomwe zidapangitsa kuti ikhale nambala 12 yayikulu padziko lonse lapansi ya herbicide monomer. Ponena za madera, Europe ndi imodzi mwamisika yofunika kwambiri yogula dimethalin, yomwe imawerengera 28.47% ya gawo lonse lapansi; Asia amawerengera 27.32%, ndipo mayiko akuluakulu ogulitsa ndi India, China ndi Japan; The Americas makamaka anaikira mu United States, Brazil, Colombia, Ecuador ndi malo ena; Middle East ndi Africa ali ndi malonda ang'onoang'ono.
Chidule
Ngakhale kuti dimethalin imakhala ndi zotsatira zabwino komanso imakhala yogwirizana ndi chilengedwe, imagwiritsidwa ntchito makamaka ku mbewu zandalama monga thonje ndi ndiwo zamasamba chifukwa cha mtengo wake wokwera mumtundu womwewo wa mankhwala ophera udzu komanso kuyamba kwa msika mochedwa. Ndi kusintha kwapang'onopang'ono kwa msika wapakhomo, kufunikira kwa kugwiritsa ntchito dimethalin kwakula kwambiri. Kuchuluka kwa mankhwala osaphika omwe amagwiritsidwa ntchito pamsika wapakhomo kwawonjezeka kwambiri kuchoka pa matani pafupifupi 2000 mchaka cha 2012 kufika pa matani oposa 5000 pakali pano, ndipo alimbikitsidwa ndikugwiritsidwa ntchito pa mpunga wofesedwa wofesedwa, chimanga ndi mbewu zina. Zosakaniza zosiyanasiyana zogwira ntchito bwino zikukulanso mwachangu.
Dimethalin ikugwirizana ndi msika wapadziko lonse lapansi wosintha pang'onopang'ono mankhwala ophera tizilombo oopsa komanso otsala pang'ono kukhala oteteza chilengedwe. Zidzakhala ndi digiri yapamwamba yofananira ndi chitukuko cha ulimi wamakono m'tsogolomu, ndipo padzakhala malo ochuluka a chitukuko.
Nthawi yotumiza: Dec-13-2022
