Tshuaj Sunflower Pests - Yuav Ua Li Cas Kho Rau Sunflower Midge Kab Tsuag

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Tshuaj Sunflower Pests - Yuav Ua Li Cas Kho Rau Sunflower Midge Kab Tsuag
Tshuaj Sunflower Pests - Yuav Ua Li Cas Kho Rau Sunflower Midge Kab Tsuag

Video: Tshuaj Sunflower Pests - Yuav Ua Li Cas Kho Rau Sunflower Midge Kab Tsuag

Video: Tshuaj Sunflower Pests - Yuav Ua Li Cas Kho Rau Sunflower Midge Kab Tsuag
Video: Как вырастить топинамбур 2024, Kaum ib hlis
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Yog tias koj cog paj paj noob hlis nyob rau thaj tsam Great Plains ntawm Tebchaws Meskas thiab Canada, koj yuav tsum paub txog cov kab paj paj noob hlis hu ua sunflower midge (Contarinia schultzi). Cov yoov me me no tshwj xeeb tshaj yog muaj teeb meem hauv cov paj paj paj hauv North thiab South Dakota, Minnesota, thiab Manitoba. Kev kis kab mob tuaj yeem ua rau txo qis cov txiaj ntsig ntawm cov noob los ntawm txhua lub paj paj noob hlis lossis kev loj hlob tsis zoo ntawm lub taub hau tag nrho.

Sunflower Midges yog dab tsi?

Tus neeg laus paj noob hlis midge tsuas yog 1/10 nti (2-3 mm.) ntev, nrog lub cev tawv nqaij thiab pob tshab tis. Qe yog daj rau txiv kab ntxwv thiab pom nyob rau hauv pawg nteg nyob rau hauv paj buds los yog tej zaum nyob rau hauv loj hlob paj noob hlis taub hau. Cov larvae zoo ib yam li cov neeg laus, tsis muaj ceg, thiab daj-txiv kab ntxwv los yog xim cream.

Lub paj paj noob hlis nruab nrab lub neej pib thaum cov neeg laus nteg qe ntawm lub bracts (hloov nplooj) qhwv lub paj buds. Tom qab cov qe hatch, cov larvae pib noj lawv txoj kev ntawm ntug ntawm cov paj noob hlis loj hlob mus rau qhov chaw. Tom qab ntawd, cov larvae poob rau hauv av thiab tsim cocoons ob peb nti (5 mus rau 10 cm.) hauv av.

Cocoons overwinter nyob rau hauv av, thiab cov neeg laus tshwm thoob plaws lub hli ntawm lub Xya hli ntuj. Cov neeg laus nrhiavsunflower buds, nteg lawv cov qe, thiab ces tuag ob peb hnub tom qab tawm. Ib tiam thib ob qee zaum tshwm sim thaum lub caij ntuj sov lig, uas yuav ua rau muaj kev puas tsuaj thib ob ntawm cov paj noob hlis uas paub tab. Cov neeg laus los ntawm tiam no nteg qe thaum nruab nrab Lub Yim Hli mus rau nruab nrab Lub Cuaj Hli (hauv Teb Chaws Asmeskas).

Sunflower Midge Damage

txhawm rau txheeb xyuas cov paj noob hlis nruab nrab puas, nrhiav cov caws pliav xim av ntawm cov bracts, cov nplooj ntsuab me me hauv qab lub taub hau paj noob hlis. Cov noob kuj tseem ploj lawm, thiab qee cov paj daj ntawm ntug ntawm lub taub hau yuav ploj mus. Yog hais tias tus kab mob loj heev, lub taub hau yuav tshwm sim twisted thiab distortion, los yog lub paj yuav tsis loj hlob tag nrho.

Qhov kev puas tsuaj feem ntau tshwm ntawm cov npoo ntawm daim teb. Cov neeg laus nrhiav tau nyuaj, tab sis koj tuaj yeem pom cov larvae yog tias koj txiav qhib lub paj paj tawg rau lub sijhawm raug.

Yuav ua li cas rau Sunflower Midge

Tsis muaj tshuaj tua kab zoo rau cov kab no. Kev cog qoob loo tuaj yeem pab tau, tshwj xeeb tshaj yog tias koj tuaj yeem txav mus rau xyoo tom ntej paj paj noob hlis cog kom deb ntawm thaj chaw muaj kab mob.

Sunflower ntau yam nrog ntau dua sunflower midge kam rau ua muaj. Txawm hais tias cov ntau yam no tsis muaj kev tiv thaiv tag nrho, lawv yuav txhawb nqa kev puas tsuaj tsawg dua yog tias lawv dhau los ua kab mob nrog sunflower midge. Hu rau koj qhov kev pabcuam txuas ntxiv hauv zos kom paub ntau ntxiv ntawm cov ntau yam no.

Lwm lub tswv yim yog kom stagger koj cov paj paj noob hlis kom yog tias ib qho cog tau tawm tsam los ntawm cov kab paj paj noob hlis no, lwm tus yuav zam kev puas tsuaj. Kev ncua sij hawm cog rau tom qab lub caij nplooj ntoos hlav kuj tseempab.

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