Video: Cov pob kws borers tuaj qhov twg?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kab yog ib txwm nyob rau teb chaws Europe, Ameslikas kis ntau yam ntawm millet, nrog rau broom pob kws . Cov European pob kws borer tau tshaj tawm thawj zaug hauv North America xyoo 1917 hauv Massachusetts, tab sis tej zaum tau qhia los ntawm Tebchaws Europe ntau xyoo dhau los.
Ua li no, koj yuav ua li cas tiv thaiv pob kws borers?
Lwm yam paub pob kws borer txoj kev tswj hwm suav nrog siv cov tshuaj tua kab tua kab tua hluas. Nws yog ib qho tseem ceeb rau cov nroj tsuag txhua tsib hnub kom txog thaum tassels pib xim av. Lwm qhov txiaj ntsig pob kws borer Txoj kev kho mob yog ua kom lub vaj thiab ib puag ncig tsis muaj cov nroj tsuag.
Ib yam li ntawd, ua li cas cov pob kws borers kis tau cov pob kws? Kev puas tsuaj rau pob kws yog tshwm sim los ntawm cov hluas larvae uas zom nplooj thiab tassels. Tom qab ntawd lawv tunnel txhua qhov chaw ntawm lub ceg thiab pob ntseg, ua rau txo qis cog zog,vu ceg , kev txhim kho pob ntseg tsis zoo thiab poob pob ntseg. Lwm cov qoob loo raug puas tsuaj feem ntau los ntawm tunneling ntawm lub ceg , pods los yog stems los ntawm larvae.
Ib yam li ib tug yuav nug, dab tsi yog pob kws borer zoo li?
Cov European pob kws borer hla lub caij ntuj no raws li tag nrho-loj hlob larva nyob rau hauv pob kws stalks thiab lwm yam nroj tsuag tsis kam xws li nroj stems. Cov larva mature yog hais txog 1 nti (25 mm) ntev, creamy rau greyish nyob rau hauv cov xim, thiab cim los ntawm es inconspicuous kab ntawm me me, puag ncig, xim av me ntsis khiav qhov ntev ntawm nws lub cev.
Cov noob twg tswj cov pob kws borer?
Lawv txhua tus muaj a noob los ntawm Bacillus thuringiensis. Vim hais tias cov hybrids muaj ib tug kab txawv noob , lawv feem ntau hu ua cov nroj tsuag transgenic. Lub Bt noob Hauv cov nroj tsuag no tsim cov protein uas tua cov European pob kws borer larvae.
Pom zoo:
Tus kws tshaj lij hluav taws xob puas tuaj yeem ua tus kws kho hluav taws xob?
Koj tuaj yeem tau txais koj pib nrog tsawg asatwo-xyoo Associate's degree thiab ntawv pov thawj los ntawm AmericanRegistry of Radiologic Technologists. Ntau yam rad techspursueradiology tshwj xeeb, xws li mammography. Lwm tus txiav txim siab ntxiv lawv txoj haujlwm los ntawm kev rov qab mus rau tsev kawm ntawv los ua tus kws kho mob
Dab tsi yog European pob kws borer thiab nws cuam tshuam li cas cov pob kws nroj tsuag thiab cov noob qoob loo?
Qhov kev puas tsuaj boring tuaj yeem ua rau cov nroj tsuag tsis muaj zog txaus los ua rau cov stalk tawg tom qab lub caij, feem ntau tshwm sim hauv qab pob ntseg. Los yog nws yuav ua rau pob kws ua stunted, ua rau cov qoob loo txo qis los ntawm cov nroj tsuag tsis muaj peev xwm thauj dej thiab cov as-ham los ntawm nws cov qia puas
Koj puas tuaj yeem muab cov pob zeb tso rau hauv pob zeb tumbler?
Feem ntau hom pob zeb tsis ua haujlwm zoo hauv pob zeb tumbler. Yog tias koj sib tov zoo tumbling ntxhib nrog pob zeb uas qis dua qib qis, cov khoom, cov npoo ntse thiab tawg ntawm cov khoom hauv qab-tumbling-qib tej zaum yuav ua rau cov polish ntawm txhua lub pob zeb hauv lub thoob
Cov yam ntxwv dab tsi uas cov kws tshawb fawb siv los faib cov pob zeb?
Feem ntau cov zaub mov tuaj yeem ua tus cwj pwm thiab cais los ntawm lawv lub cev tshwj xeeb: hardness, luster, xim, strrea Feem ntau cov zaub mov tuaj yeem ua tus yam ntxwv thiab cais los ntawm lawv lub cev tshwj xeeb: hardness, luster, xim, streak, tshwj xeeb gravity, cleavage, tawg, thiab tenacity
Cov pob zeb hauv av twg tuaj yeem tsim cov pob zeb zoo li lub raum?
Hematite (los yog haematite) Kuj tseem muaj ntau hom hematite, qee yam yog: raum ore, ib qho loj, botryoidal (lumpy) lossis reniform (lub raum zoo li tus) daim ntawv; specularite, micaceous (flaky) daim ntawv; oolitic, ib daim ntawv sedimentary tsim los ntawm cov nplej me me; liab ochre, ib daim ntawv liab earthy