Raws li cov khoom siv tseem ceeb rau kev ua liaj ua teb niaj hnub thiab kev tswj hwm ib puag ncig sab nraum zoov, ntxoov ntxoo nets raug cais raws li lawv qhov chaw ua haujlwm, cov yam ntxwv ntawm cov khoom siv, thiab cov ntawv thov scenarios. Cov khoom sib txawv muaj lawv tus kheej zoo hauv cov txheej txheem shading, ib puag ncig adaptability, thiab kev siv tau zoo. Kev nkag siab txog kev tshawb fawb ntawm lawv cov kev faib cov logic yog qhov tseem ceeb rau kev ua tiav kev xaiv raug thiab siv tau zoo.
Los ntawm qhov kev xav ntawm shading tus nqi, ntxoov ntxoo nets tuaj yeem muab faib ua qis -shading (30%-50%), nruab nrab-shading (50%-70%), thiab siab-shading (70%{13}}90%) hom. Tsawg-shading ntxoov ntxoo nets feem ntau tso cai rau lub teeb ntuj hla dhau, haum rau lub teeb-cov qoob loo hlub (xws li cov ntoo txiv ntoo thiab cov nroj tsuag solanaceous) xav tau lub teeb ntxoov ntxoo lossis rau lub caij ntuj no tiv thaiv tshav kub thiab ntxiv teeb pom kev zoo. Nruab nrab-shading ntxoov ntxoo nets sib npaug lub teeb thiab cua sov tej yam kev mob thiab yog dav siv rau nplooj zaub, paj, thiab seedlings, alleviating siab - kub ntxhov siab thiab tswj photosynthetic efficiency. High-shading ntxoov ntxoo nets thaiv feem ntau ncaj qha tshav ntuj los ntawm ntom mesh, feem ntau yog siv rau lub caij ntuj sov qhib-tsav cog los yog shading cov qoob loo muaj nuj nqis (xws li edible fungi thiab sprouts), txo ambient kub thiab transpiration nqi.
Muab faib los ntawm cov khoom muaj pes tsawg leeg, cov khoom lag luam tseem ceeb suav nrog polyethylene (PE)-raws li ntxoov ntxoo nets thiab polypropylene (PP)-raws li ntxoov ntxoo nets. PE-raws li cov khoom lag luam feem ntau yog ua los ntawm high- ntom polyethylene (HDPE) lossis linear low-density polyethylene (LLDPE), muab cov huab cua tsis zoo, kev laus ua haujlwm zoo, thiab kev pabcuam lub neej ntawm 2-4 xyoo, ua rau lawv nyiam xaiv rau ob qho tib si qhib- kev cog qoob loo thiab tsev cog khoom. PP-based products have lower density and a significant cost advantage, but their resistance to ultraviolet radiation and damp heat aging is slightly weaker, and they are mostly used for short-term covering or temporary protection. Nyob rau hauv xyoo tas los no, qee cov khoom lag luam tau nthuav dav ntxiv rau thaj tsam ntawm cov khoom siv los ntawm kev ntxiv cov tshuaj hloov pauv xws li cov tshuaj tiv thaiv kev laus thiab cov nplaim hluav taws.
Kev faib xim xim yog ib qho tseem ceeb ntawm kev tswj lub teeb zoo. Dub ntxoov ntxoo nets muaj qhov siab shading tus nqi thiab muaj zog nqus cua sov, ua rau lawv haum rau cov xwm txheej uas yuav tsum tau txias sai; nyiaj- cov khoom grey ua ke ua ke shading thiab reflective zog, xav txog qee qhov infrared thiab ultraviolet rays, txo qhov kev pheej hmoo ntawm cov qoob loo scorching thaum txo qhov kub; xiav ntxoov ntxoo nets muaj kev xaiv xa mus rau qhov tshwj xeeb wavelengths ntawm lub teeb (xws li lub teeb xiav), txhawb kev loj hlob thiab kev loj hlob ntawm qee cov qoob loo (xws li lettuce thiab strawberries); Dawb ntxoov ntxoo nets yog tus cwj pwm los ntawm lub teeb xa hluav taws xob siab thiab tsim nyog rau kev cog qoob loo lossis paj cog uas yuav tsum tau muaj ob qho tib si shading thiab ntxiv teeb pom kev zoo.
Raws li kev siv thev naus laus zis, cov nets tiaj tiaj muaj cov mesh tsis tu ncua thiab cov shading zoo ib yam, haum rau qhov loj - thaj tsam kev pov hwm; twisted weave nets txhim khu kev ruaj ntseg los ntawm kev sib hloov warp thiab weft yarns, exhibiting zoo cua tsis kam; Composite weave nets integrate ntau yam txheej txheem, ua kom muaj kev hloov pauv hauv cheeb tsam hauv cov shading tus nqi kom tau raws li qhov sib txawv xav tau ntawm cov qoob loo tshwj xeeb.
Qhov kev faib tawm ntawm qhov ntxoov ntxoo nets qhia txog kev sib sib zog nqus ntawm kev ua haujlwm segmentation thiab kev hloov kho thev naus laus zis. Cov neeg siv yuav tsum xaiv hom tsim nyog raws li cov yam ntxwv ntawm cov qoob loo, huab cua puag ncig, thiab lub hom phiaj kev pab them nqi kom ua kom nws lub teeb thiab kev tswj hwm kub thiab kev tiv thaiv ib puag ncig, muab kev txhawb nqa zoo rau kev ua liaj ua teb niaj hnub.
