Tau 20 xyoo dhau los no, cov tshuaj tua kab uas huv si ntawm kuv lub teb chaws tau tsim kho sai heev. Ua ntej, vim muaj ntau hom tshuaj tshiab thiab cov thev naus laus zis siab heev los ntawm txawv teb chaws, thiab qhov thib ob, kev siv zog ntawm cov chaw ua haujlwm hauv tsev tau ua rau feem ntau ntawm cov khoom siv tseem ceeb thiab cov tshuaj tua kab uas huv si tau tsim tawm. thiab hais txog qhov zoo thiab kev txhim kho ntawm cov tshuaj tshiab. Txawm hais tias muaj ntau hom tshuaj tua kab raw, raws li cov tshuaj tua kab huv si, pyrethroids tseem yog cov tseem ceeb uas siv tam sim no. Vim tias cov kab tsuag tau tsim cov qib sib txawv ntawm kev tiv thaiv rau pyrethroids hauv qee thaj chaw, thiab muaj kev tiv thaiv hla, uas cuam tshuam rau nws siv. Txawm li cas los xij, vim tias nws muaj ntau qhov zoo tshwj xeeb xws li kev lom tsawg thiab kev ua haujlwm siab, nws nyuaj rau hloov los ntawm lwm hom hauv ib lub sijhawm. Cov hom tshuaj uas siv ntau yog tetramethrin, Es-bio-allethrin, d-allethrin, methothrin, pyrethrin, permethrin, cypermethrin, beta-cypermethrin, deltamethrin thiab nplua nuj dextramethrin Allethrin thiab lwm yam. Ntawm lawv, cov nplua nuj D-trans allethrin yog tsim thiab tsim tawm hauv kuv lub tebchaws. Cov kua qaub ntawm cov allethrin feem ntau yog sib cais los ntawm cov cis thiab trans isomers thiab sab laug thiab sab xis isomers raug sib cais kom nce qhov sib piv ntawm nws lub cev ua haujlwm zoo, yog li txhim kho cov khoom ua haujlwm zoo. Tib lub sijhawm, lub cev tsis raug cai raug hloov mus ua lub cev siv tau, txo tus nqi ntxiv. Nws qhia tias kev tsim cov pyrethroids hauv kuv lub tebchaws tau nkag mus rau hauv thaj chaw ntawm kev txhim kho ywj pheej thiab nkag mus rau hauv thaj chaw ntawm stereochemistry thiab cov thev naus laus zis siab. Dichlorvos ntawm cov tshuaj tua kab organophosphorus yog hom tshuaj uas muaj cov txiaj ntsig loj tshaj plaws thiab daim ntawv thov dav tshaj plaws vim nws cov nyhuv knockdown muaj zog, muaj peev xwm tua tau zoo thiab muaj nuj nqi ntuj, tab sis DDVP thiab chlorpyrifos tau raug txwv tsis pub siv. Xyoo 1999, Hunan Research Institute of Chemical Industry, raws li cov lus pom zoo ntawm WHO, tau tsim cov tshuaj tua kab thiab acaricide pirimiphos-methyl uas muaj ntau yam, ua haujlwm sai, uas siv tau los tswj cov yoov tshaj cum, yoov, kab laum thiab kab laug sab.
Ntawm cov carbamates, propoxur thiab Zhongbucarb siv ntau heev. Txawm li cas los xij, raws li cov ntaub ntawv tseem ceeb, cov khoom lwj ntawm sec-butacarb, methyl isocyanate, muaj teeb meem lom. Cov khoom no tsis suav nrog hauv daim ntawv teev cov tshuaj tua kab hauv tsev uas tau tshaj tawm los ntawm Lub Koom Haum Kev Noj Qab Haus Huv Ntiaj Teb xyoo 1997, thiab tsuas yog Tuam Tshoj xwb, tsis muaj lwm lub tebchaws hauv ntiaj teb tau siv cov khoom no rau cov tshuaj tua kab hauv tsev. Txhawm rau kom ntseeg tau tias muaj kev nyab xeeb ntawm cov tshuaj tua kab hauv tsev thiab ua raws li cov qauv thoob ntiaj teb, Lub Koom Haum Tswj Tshuaj Tua Kab ntawm Ministry of Agriculture tau ua ke nrog kuv lub tebchaws cov xwm txheej hauv tebchaws, thaum Lub Peb Hlis 23, 2000, rau Zhongbuwei, cov cai tseem ceeb rau kev hloov pauv maj mam mus rau kev tso tseg kev siv cov tshuaj tua kab hauv tsev tau ua.
Muaj ntau tus kws tshawb fawb txog cov tshuaj tswj kev loj hlob ntawm cov kab, thiab muaj ntau hom, xws li: diflubenzuron, diflubenzuron, hexaflumuron, thiab lwm yam. Hauv qee thaj chaw, lawv siv los tswj cov kab menyuam hauv cov chaw yug yoov thiab yoov, thiab tau ua tiav cov txiaj ntsig zoo. Lawv maj mam nrov thiab siv.
Nyob rau xyoo tas los no, cov chaw xws li Fudan University tau tshawb fawb thiab tsim cov pheromones ntawm cov yoov hauv tsev, thiab Wuhan University tau tsim cov kab laum parvoviruses. Cov khoom no muaj kev cia siab dav dav. Cov khoom siv tua kab mob me me tab tom tsim kho, xws li: Bacillus thuringiensis, Bacillus sphaericus, kab laum kab mob thiab Metarhizium anisopliae tau raug sau npe ua cov khoom siv huv. Cov synergists tseem ceeb yog piperonyl butoxide, octachlorodipropyl ether, thiab synergist amine. Tsis tas li ntawd, nyob rau xyoo tas los no, vim muaj teeb meem ntawm daim ntawv thov ntawm octachlorodipropyl ether, Nanjing Forestry Research Institute tau rho tawm AI-1 synergist los ntawm turpentine, thiab Shanghai Entomology Research Institute thiab Nanjing Agricultural University tau tsim 94o synergist. tus neeg sawv cev. Kuj tseem muaj cov synergistic amines, synergists, thiab kev tsim cov synergists los ntawm cov nroj tsuag S-855.
Tam sim no, muaj tag nrho 87 yam khoom xyaw ntawm cov tshuaj tua kab uas nyob rau hauv qhov xwm txheej zoo ntawm kev sau npe tshuaj tua kab huv hauv peb lub tebchaws, uas yog: 46 (52.87%) ntawm pyrethroids, 8 (9.20%) ntawm organophosphorus, 5 ntawm carbamates 1 (5.75%), 5 cov tshuaj inorganic (5.75%), 4 microorganisms (4.60%), 1 organochlorine (1.15%), thiab 18 lwm hom (20.68%).
Lub sijhawm tshaj tawm: Lub Peb Hlis-20-2023