cov khoom

Kab nets ua los ntawm polyethylene, polypropylene thiab nylon yuav tsum muaj qee yam kev tiv thaiv kev laus, thiab lawv lub neej kev pabcuam yuav tsum tsis pub tsawg dua 3 xyoos raws li kev siv raws li cov lus qhia.
Qhov ntom ntawmkab nets feem ntau yog qhia nyob rau hauv cov nqe lus ntawm mesh, uas yog tus naj npawb ntawm qhov ib square inch.Raws li hom thiab qhov loj ntawm cov kab tsuag tseem ceeb ntawm cov qoob loo cog qoob loo, qhov tsim nyog mesh ntawm tsev cog khoom kab tswj net yog 20 meshes rau 50 meshes.Tus naj npawb tshwj xeeb mesh yuav tsum raug xaiv thiab tsim raws li hom thiab qhov loj ntawm cov kab thiab kab mob tseem ceeb.
Cov xim ntawm cov kab-pov thawj mesh hnab yuav tsum yog xim dawb thiab tsis muaj xim thiab pob tshab, thiab nws tuaj yeem yog xim dub lossis nyiaj-grey.Cov kab dawb thiab tsis muaj xim tsis muaj kab pov thawj muaj lub teeb pom kev zoo, cov kab dub dub muaj cov nyhuv shading zoo, thiab nyiaj-grey kab-pov thawj nets tuaj yeem zam cov teebmeem aphid.Tom qab cov khoom ua liaj ua teb tau npog nrog cov kab pov thawj, lawv tuaj yeem tiv thaiv kab ntsig kab ntsig, kab npauj pob zeb diamondback, kab laug sab tub rog, thiab Spodoptera litura., Daj warped flea beetle, kab, aphids thiab lwm yam kab tsuag.Raws li kev ntsuam xyuas, cov kab tswj kab yog 94-97% zoo tiv thaiv kab ntsig kab ntsig, pob zeb diamondback npauj, cowpea pod borers thiab Liriomyza sativa, thiab 90% tawm tsam aphids.