Lub tsev cog khoom nyob rau hauv lub teb chaws los yog nyob rau hauv lub vaj teb tso cai rau tus tswv sau ntau ntxov tshaj li los ntawm lub txaj rau hauv qhib hauv av. Ntxiv nrog rau lub meej mom ntawm tus qauv yuav ntaus nqi thiab ib tug zoo duration ntawm qoob loo yields. Yog vim li no ntau tus neeg ua liaj ua teb txiav txim siab cog zaub thiab zaub hauv ib lub tsev cog khoom . Muaj coob tus tau txais ib qho qauv npaj txhij ua rau ntau npaum li cas, los ntawm txoj kev. Tab sis koj tuaj yeem ua ib lub tsev cog qoob loo nrog koj txhais tes, uas, tau kawg, yuav txo cov khoom pov tseg. Thiab los ntawm txoj kev, ib qho ntawm cov tseem ceeb tseem ceeb yog cov ntaub ntawv lo. Feem ntau nyob rau hauv no zoo, cov zaj duab xis yog siv - cov khoom yog pheej yig thiab yooj yim, thiab nyob rau qee qhov kuj tseem ruaj. Yog tias koj tab tom xav txog qhov yuav ua li cas thiaj li them cov tsev qoob loo thiab xav txog nws, peb yuav qhia koj zaj duab xis zoo dua rau lub tsev cog khoom thiab qhov twg xaiv.
Zaj duab xis rau greenhouses - yuav ua li cas xaiv?
Hauv kev txiav txim siab rau koj lub tsev cog khoom yav tom ntej kom tiav nws cov dej num, zaj duab xis yuav tsum tau muaj cov khoom nram qab no, xws li:
- tsis muaj dej yaug;
- pob tshab;
- ywj yaus;
- tiv taus kub;
- breathable;
- lub teeb tawg.
Tseeg, rau lub hom phiaj no ib tug muaj zog polyethylene zaj duab xis yog haum, uas yog tseem feem ntau pheej yig. Tab sis nws kuj muaj peev xwm sib txawv, txhua yam nrog nws tus kheej yam ntxwv, raws li yuav tsum tau tham txog hauv qab no.
Hom polyethylene zaj duab xis rau greenhouses
Ntawm txhua hom kev yeeb yaj kiab uas muag hauv khw, muaj zog heev, tsuas yog peb hom:
- muaj zog dua;
- mus sij hawm ntev;
- polyvinyl chloride.
Qhov yeeb yaj kiab tshiab rau hauv greenhouses yog ib yam khoom siv heev uas muaj qhov tshwj xeeb honeycomb puab ncej (s) ntawm polypropylene lossis fiberglass. Xws li ib tug zaj duab xis, txawm tias muaj zog (pab 2-3 xyoos), tab sis muaj ib tug tsawg muaj permeability.
Pa polyethylene zaj duab xis rau greenhouses thiab greenhouses yog qhov pheej yig kev xaiv ntawm kev ua lag luam. Ua rau cov khoom siv tsis ntev tshaj li ib lub caij, tab sis nyiam cov neeg nyob hauv lub caij ntuj sov rau nws txoj kev khwv nyiaj txiag.
Polyvinyl chloride zaj duab xis , thaj reminiscent ntawm cellophane, yog suav hais tias yog ib qho ntawm feem ntau ruaj cov ntaub ntawv. Xws li cov ntaub ntawv muaj lub teeb siab kis tau tus cwj pwm - tsis pub tsawg tshaj 90%. Tsis tas li ntawd, ib zaj duab xis ntawm polyvinyl chloride muaj peev xwm tuav ntawm ntau tshaj 90% ntawm qhov tob thiab ntau tshaj 80% ntawm ultraviolet hluav taws xob. Qhov txheej no yog tsim rau cov neeg muaj lub tswv yim txuag ntawm lub tsev sov.
Perennial tsev cog khoom zaj duab xis yog ib pawg loj ntawm cov ntaub ntawv rau txheej greenhouses ntawm ntau hom, feem ntau ntawm cov ua los ntawm polyethylene nrog ntau yam additives los txhim kho cov khoom. Piv txwv li, lub teeb ntawm lub teeb rau ntawm lub teeb nyob rau hauv greenhouses txawv ntawm qhov ib txwm nyob rau hauv tias nws muaj pes tsawg leeg muaj cov tshwj xeeb tshuaj. Ua tsaug rau cov khoom siv no, cov khoom siv yog UV resistant thiab vim li no puas ntau qeeb vim cov tshav ntuj. Nws cov subspecies, dub thiab dawb zaj duab xis rau greenhouses, tab xim rau ib sab nyob rau hauv dawb, nyob rau lwm - nyob rau hauv dub. Vim li no, cov dub dub absorbs hnub ci tshav kub, thiab sab dawb, ntawm qhov tsis tooj, qhia nws. Tseeb, xws li ib cov khoom siv raws li ib tug txheej ntawm saum npoo ntawm cov av nyob rau hauv ib lub tsev cog khoom
Kev xyuam xim hydrophilic tso cai rau koj mus rhuav tshem ntawm xws li ib qho tshwm sim, yam ntxwv ntawm greenhouses, zoo li thaum sawv ntxov condensation on sab hauv saum npoo ntawm noo noo. Lub qhov mob ntawm cov dej tsuas yog ntws tawm hauv zaj duab xis. Hauv cov yeeb yaj kiab uas muaj ntau xyoo ntau, cov quav tshuaj tiv thaiv cov hmoov av ntawm qhov av. Thaum tshav kub kub twj ywm tuav cia cov cua kub vim qhov tseeb uas yog vim nws muaj pes tsawg tus nws tsis tuaj txog sab qaum teb. Cua npuas zaj duab xis rau greenhouses yog txheej txheem peb txheej: lub txheej txheej ntawm cov cua npuas yog ib puag ncig 2 sab ntawm ib zaj yeeb yaj kiab. Txoj kev tsim no yog dej resistant thiab te-resistant.