Vim li cas thiaj siv tshuaj tiv thaiv kab?

Lub hom phiaj tseem ceeb ntawm kab-pov thawj mesh yog khaws cov kab xws li zaub qhwv dawb npauj npaim thiab flea kab tawm tej qoob loo. Tsim kom muaj kev tiv thaiv lub cev tuaj yeem ua tau zoo thiab hloov pauv siv tshuaj tua kab. 

Lub mesh zoo li me ntsis zoo li net curtains tab sis yog ua los ntawm polythene ntshiab. Mesh qhov loj me yog qhov qhib ntau dua horticultural fleece txhais tau tias nws muab me ntsis warmth. Txawm li cas los xij, nws muab cua zoo, nag thiab lawg tiv thaiv.

Qhov zoo

Tiv thaiv kab 

Siv raws li lub cev barrier, kab pov thawj meshes confer tiv thaiv cov nroj tsuag noj kab feem ntau yam tsis muaj qhov kub thiab txias (nyob ntawm qhov loj mesh) tab sis muaj kev tiv thaiv zoo tiv thaiv cua thiab lawg. Lawv kuj cuam tshuam los nag hnyav txo qhov kev puas tsuaj uas cov raindrops loj tuaj yeem ua rau cov qauv hauv av, noob txaj thiab cov noob. Cov av txaws uas tuaj yeem kis kab mob nplooj ntoo kuj raug txo.

Many problems including root feeding insects such as zaub ntug hauv paus ya thiab cabbage paus ya are better managed by insect proof mesh than pesticides and the extra shelter leads to better plants and heavier crops.

Stretching mesh, even by placing over hoops, can widen the gaps and reduce efficacy. Check manufacturer’s instructions. The edges of the mesh are best buried under at least 5cms of soil.

Cov nroj tsuag yuav tsum tsis txhob nruj vim lawv loj hlob nyob rau hauv mesh npog thiab slack yuav tsum tau suav nrog thaum npog kom tso cai rau cov nroj tsuag loj hlob.

Txawm tias horticultural fleece can exclude invertebrates very effectively, it is much less durable and can be easily damaged when removed for weed control. Fleece can also raise temperatures and humidity to levels that might be undesirable.

Cov qoob loo tig should be practised, as some invertebrates can get through the mesh and might persist until the following year, ready to multiply when the same crop is planted and the mesh replaced.

Qhov tsis zoo

Txwv kev khaws cia sov

Fleece should be used where crops need to be provided with extra warmth or frost protection.

Txhawb cov kab mob thiab slugs

Raised humidity levels and subsequent soft, lush growth produced when growing under insect proof mesh may encourage diseases such as Botrytis thiab downy mildew. Slugs thiab qwj tuaj yeem txhawb los ntawm cov av noo ntau dua hauv qab mesh.

Txwv tsis pub nkag mus rau cov nroj tsuag

Hmoov tsis zoo nws yog feem ntau yuav tsum tau nthuav tawm cov nroj tsuag txhua ob mus rau peb lub lis piam mus rau hoe, nroj tsuag thiab nyias cov noob sown nroj tsuag. Qhov no txaus ntshai ingress ntawm cov kab tsuag uas ib zaug hauv lub mesh yuav muaj ntau ntxiv.

Qe nteg ntawm lub mesh

Kab tuaj yeem qee zaum nteg qe los ntawm lub mesh yog tias lub mesh kov cov qoob loo nplooj. Xyuas kom cov mesh tsis kov cov nroj tsuag yuav txo tau qhov tshwm sim no. 

Teeb meem pollination

Kab-pollinated qoob loo xws li strawberries thiab zaub qhwv Nws yog unsuited rau loj hlob nyob rau hauv kab-pov thawj mesh thaum lawv flowering lub sij hawm.

Netting thiab tsiaj qus

Cov tsiaj qus tuaj yeem raug kev pheej hmoo los ntawm kev txhim kho tsis zoo thiab tswj vaj tsev netting. Zoo heev mesh, xws li kab-pov thawj mesh los yog horticultural fleece, yog ib qho ntawm cov kev xaiv muaj kev nyab xeeb, tab sis nws yog ib qho tseem ceeb kom ruaj ntseg cov npoo ntawm cov mesh los ntawm faus rau hauv av los yog anchoring rau hauv av theem board ib nrab sunken nyob rau hauv cov av. Cov noog tshwj xeeb tuaj yeem nkag mus rau hauv cov netting xoob uas yuav ua rau lawv tuag lossis raug mob. 

Sustainability

Insect proof mesh may last five to ten years but unfortunately cannot be easily recycled. However, local recycling facilities should be checked. Insect netting made from biodegradable plant starch is now available from Andermatt, muab kev xaiv eco-friendly rau gardeners. 

Kev xaiv khoom

Insect-proof mesh is offered in pre-cut sizes, a variety of widths and any length can be ordered ‘off the roll’. The larger the sheet and the closer it is to manufactured sizes the less it costs per square metre.

Mesh kuj muag hauv ntau qhov mesh. Qhov me me mesh qhov me me cov kab tsis suav nrog tab sis tus nqi ntau dua thiab tseem muaj peev xwm nce qhov kub thiab txias (cov ntaub ntawv pov thawj zoo meshed kab tuaj yeem ua rau muaj qhov kub kub rau cov qoob loo npog) thiab cov av noo hauv qab. Ntawm qhov tod tes, cov meshes zoo dua yuav sib dua thiab siv tau yooj yim dua yam tsis muaj kev txhawb nqa hoops.

Standard mesh: 1.3-1.4 hli. Zoo rau kab xws li cabbage nplooj ya, dos ya, taum noob ya thiab carrot fly, as well as moth and butterfly pests.  Birds and mammals can also be excluded. Although theoretically capable of penetrating mesh, mammals and larger birds seldom do, so there is rarely any need to add further protection such as bird netting. However, this size is unreliable in excluding small insects such as aphids, yoov yoov, allium nplooj miner thiab leek moth.

Zoo mesh: 0.8mm. Good for very small insects such as flea beetles, cabbage whitefly, moth and butterflies, leaf miners (including allium leaf miner), zaub ntsuab, blackfly, nrog rau cabbage cag ya, dos ya, taum noob ya thiab carrot ya. Noog thiab tsiaj txhu kuj raug cais tawm.

Ultrafine mesh: 0.3-0.6 hli. Qhov loj me no muab kev tiv thaiv zoo thrips, flea beetles thiab lwm yam me me invertebrates. Cov noog thiab tsiaj txhu tsiaj kuj raug cais tawm.

Npauj npaim netting: Cov nets zoo nrog 4-7mm mesh muab kev tiv thaiv zoo npauj npaim dawb tsuav cov nplooj tsis kov lub vas, thiab tau kawg noog thiab tsiaj txhu.