Ukuqhathanisa phakathi kwe-Dimethalin kanye Nezimbangi
I-Dimethylpentyl i-dinitroaniline herbicide. Imuncwa ngokuyinhloko imiqumbe yokhula ehlumayo futhi ihlanganiswe nephrotheni ye-microtubule ezitshalweni ukuvimbela i-mitosis yamaseli ezitshalo, okuholela ekufeni kokhula. Isetshenziswa kakhulu ezinhlotsheni eziningi zamasimu omile, okuhlanganisa ukotini nommbila, nasemasimini omile wezithombo zerayisi. Uma kuqhathaniswa nemikhiqizo encintisanayo i-acetochlor ne-trifluralin, i-dimethalin inokuphepha okuphezulu, okuhambisana nesiqondiso sokuthuthukiswa okujwayelekile kokuphepha kwezibulala-zinambuzane, ukuvikelwa kwemvelo kanye nobuthi obuphansi. Kulindeleke ukuthi iqhubeke nokuthatha indawo ye-acetochlor ne-trifluralin ngokuzayo.
I-Dimethalin inezici zokusebenza okuphezulu, i-spectrum ebanzi yokubulala utshani, ubuthi obuphansi kanye nezinsalela, ukuphepha okuphezulu kubantu nasezilwaneni, kanye nokukhangiswa kwenhlabathi okuqinile, akulula ukuvuza, nokuhambisana nemvelo; Ingasetshenziswa ngaphambi nangemva kokuhluma nangaphambi kokutshala kabusha, futhi ubude bayo bufika ezinsukwini ezingama-45 ~ 60. Isicelo esisodwa singaxazulula umonakalo wokhula phakathi naso sonke isikhathi sokukhula kwezitshalo.
Ukuhlaziywa kwesimo sokuthuthukiswa kwemboni ye-dimethalin yomhlaba wonke
1. Isabelo somhlaba wonke sokubulala ukhula
Njengamanje, isibulala-khula esisetshenziswa kakhulu yi-glyphosate, esibalelwa ku-18% wesabelo semakethe somuthi wokubulala ukhula emhlabeni wonke. I-herbicide yesibili i-glyphosate, eyenza u-3% kuphela wemakethe yomhlaba wonke. Ezinye izibulala-zinambuzane ziba nengxenye encane uma kuqhathaniswa. Ngoba i-glyphosate nezinye izibulala-zinambuzane zisebenza kakhulu ezitshalweni ezishintshashintshayo. Iningi lemithi yokubulala ukhula edingekayo ekukhiqizweni kwezinye izitshalo ezingezona i-GM iba ngaphansi kuka-1%, ngakho-ke imakethe yokubulala ukhula iphansi. Njengamanje, isidingo semakethe yomhlaba wonke ye-dimethalin singaphezu kwamathani angama-40,000, intengo emaphakathi ilinganiselwa ku-55,000 yuan/ton, kanti ivolumu yokuthengisa emakethe icishe ibe yizigidi ezingama-400 zamadola, ibalwa ku-1% ~ 2% wemakethe yomhlaba yokubulala ukhula. isikali. Njengoba ingasetshenziswa esikhundleni sezinye izibulala-khula eziyingozi esikhathini esizayo, isilinganiso semakethe kulindeleke ukuthi siphindeke kabili ngenxa yesikhala saso esikhulu sokukhula.
2. Ukuthengiswa kwe-dimethalin
Ngo-2019, ukuthengiswa kwe-dimethalin emhlabeni wonke bekungama-dollar ayizigidi ezingama-397, okuyenza ibe yi-monomer ye-12 enkulu yokubulala ukhula emhlabeni. Ngokuya ngezifunda, iYurophu ingenye yezimakethe zabathengi ezibaluleke kakhulu ze-dimethalin, ezibalelwa ku-28.47% wesabelo somhlaba wonke; I-Asia yenza i-27.32%, futhi amazwe ayinhloko okuthengisa yiNdiya, i-China ne-Japan; IMelika igxile kakhulu e-United States, eBrazil, eColombia, e-Ecuador nakwezinye izindawo; IMpumalanga Ephakathi ne-Afrika inezimakethe ezincane.
Isifinyezo
Nakuba i-dimethalin inomphumela omuhle futhi ihambisana nemvelo, isetshenziselwa ikakhulukazi izitshalo zemali ezifana ukotini nemifino ngenxa yentengo yayo ephezulu ohlotsheni olufanayo lwemithi yokubulala ukhula kanye nokuqala kwemakethe sekwephuzile. Ngokushintsha kancane kancane komqondo wemakethe yasekhaya, isidingo sokusetshenziswa kwe-dimethalin sikhule ngokushesha. Isamba somuthi ongahluziwe osetshenziswa emakethe yasekhaya senyuke ngokushesha sisuka kumathani angaba ngu-2000 ngo-2012 saya kumathani angaphezu kuka-5000 okwamanje, futhi siye sakhuthazwa futhi sasetshenziswa erayisini elomile elihlwanyelwe, ummbila nezinye izitshalo. Izinhlobonhlobo zezingxube ezisebenza kahle ezihlanganisiwe nazo zikhula ngokushesha.
I-Dimethalin ihambisana nenkambiso yemakethe yamazwe ngamazwe yokushintsha kancane kancane izibulala-zinambuzane ezinobuthi nezinsalela eziningi ngezibulala-zinambuzane ezivumelana nemvelo. Izoba nezinga eliphezulu lokumatanisa nokuthuthukiswa kwezolimo zesimanje esikhathini esizayo, futhi kuzoba nendawo enkulu yokuthuthukiswa.
Isikhathi sokuthumela: Dec-13-2022
