Ifilimu ye-multi-span greenhouse ingenye yezinto ezisetshenziswa kakhulu zokumboza i-greenhouse ekukhiqizweni kwezolimo, futhi ukusetshenziswa kwayo kwansuku zonke kusuka kumakhothamo endabuko angaphansi komhlaba, izindawo zokugcina izithombo zokukhanya kwelanga, izindawo zokugcina izithombo ezinezinhlangothi ezimbili, izindawo zokugcina izithombo zefilimu enama-span amaningi, kanye nezindawo zokugcina izithombo zesikhunta. Ngakho-ke abalimi bezolimo, ikakhulukazi abalimi abasha, kufanele bakhethe kanjani ifilimu ye-greenhouse efanele lapho behlanganyela ekukhiqizeni kwezolimo, namuhla ngizokunikeza isingeniso esifushane futhi wabelane.
Isigaba sokuthuthukiswa kwefilimu ye-greenhouse Njengamanje, ukwakheka komkhiqizo wefilimu ebamba ukushisa kufanele kuthuthukiswe ukuze kube yinhlanganisela yezingqimba eziningi, futhi ukusebenza kuvame ukuhanjiswa kokukhanya okuphezulu, ukugcinwa kokushisa okuphezulu, amandla aphezulu, impilo ende kanye nesikhathi sokuconsa okuqhubekayo, isikhathi sokulwa nenkungu, isikhathi sokuvikela uthuli, neminye imisebenzi. Ukuthuthukiswa okuhlanganisiwe. Ukuthuthukiswa kwefilimu ye-greenhouse ngokuvamile kuye kwadlula izigaba ezine ngokusho kwezinto ezihlukene zokukhiqiza: eyokuqala ifilimu ye-polyethylene (PE) ye-greenhouse; eyesibili ifilimu ye-polyvinyl chloride (PVC) yokushisa ukushisa; eyesithathu ifilimu ye-greenhouse ethylene-vinyl acetate copolymer (EVA); esesine ifilimu ye-PO, kanye nefilimu ekhishwe ngokuhlanganyela yesizukulwane sesihlanu enezingqimba ezinhlanu esathuthukiswayo.
Izici eziyinhloko kanye nokwehluka kwamafilimu ahlukahlukene abamba ukushisa:
1. Ifilimu ye-PVC (i-polyvinyl chloride) ye-greenhouse. Lolu hlobo lwefilimu lunokudlulisa okuhle kokukhanya, ifilimu entsha inokudlulisa ukukhanya okuphelele okungaphezu kwama-85%, ukugcinwa komswakama okuhle kakhulu, ukuguquguquka okuphansi kwe-thermal, amandla okubamba okuphezulu, nokumelana komoya onamandla. Ukuzinza okuhle kwamakhemikhali, ukumelana ne-asidi ne-alkali. Okubi ukuthi ifilimu inengxenye enkulu, kanye nokusetshenziswa kwendawo efanayo yei-greenhouse ingaphezu kwe-1/3 kune-polyethylene, okuholela ekwandeni kwezindleko; okwesibili, iba lukhuni futhi ibe brittle ekushiseni okuphansi, futhi kulula ukuthambisa nokuphumula ekushiseni okuphezulu; ngemva kokuba izithasiselo sezinemvula, indawo yefilimu Ngokuqoqwa kothuli, ukukhanya okudluliswayo kuvamise ukuba buthakathaka ngemva kwenyanga eyodwa yokusetshenziswa. Ifilimu eyinsalela ingcolisa inhlabathi futhi ayikwazi ukushiswa. Ngenxa yokungcoliswa kwemvelo okubangelwa ukukhiqizwa kwe-chlorine, ukusetshenziswa kwamanje kuncipha kancane kancane.
2. Ifilimu ye-PE greenhouse.Ifilimu ye-PE greenhouseilula ngokuthungwa, ithambile, ibunjwa kalula, inhle ekudluliselweni kokukhanya, ayinabo ubuthi, ifanele amafilimu ahlukahlukene abamba ukushisa namafilimu okumboza ngembewu, futhi okwamanje iyinhlobonhlobo yefilimu yezolimo eyinhloko ezweni lami. Ngokwezidingo zabalimi, izinhlobo ezahlukene zemikhiqizo ezifana ne-PE anti-aging (ukuvimbela okukodwa), i-PE anti-aging dripping (double prevention), i-PE anti-aging dripping anti-fogging (ezintathu zokulwa nenkungu) zingakhiqizwa, ucansi oluhle lokunqanda ukuguga kanye nocansi oluconsayo lokulwa nenkungu. Ububi bayo yilezi: ukumelana nesimo sezulu esibi, ukungalondolozi ukushisa okungekuhle, kanye nobunzima bokuhlanganisa. Umphathi u-Song ufunde ukuthi ifilimu ye-PE grouting isetshenziswa kakhulu emakethe.
3. Ifilimu ye-grouting icutshungulwa futhi ngesisekelo sefilimu yasekuqaleni ye-polyethylene, futhi indawo yangaphakathi yefilimu yezolimo iphathwa ngokugqoka, ukuze ifilimu ephathwayo ibe ne-agent esebenzayo yokudonsa i-antifogging ehlanganiswe ngokuqinile kuyo. Odongeni lwangaphakathi lwefilimu echithiwe, ungqimba lwezidakamizwa lwakhiwe endaweni engaphakathi yefilimu echithiwe. Ngokushesha nje lapho umswakama oseshedini uthinta udonga lwangaphakathi lwefilimu echithiwe, kuzokwakhiwa ifilimu yamanzi, bese igeleza phansi ngomthambeka weshede ngenxa yamandla ayo adonsela phansi, ukuze kuzuzwe umphumela wokuqeda. inkungu nokuconsa. Umehluko obalulekile ngefilimu yangaphambilini ye-greenhouse ukuthi i-ejenti esebenzayo ikhona ngaphandle kwefilimu ye-greenhouse, ngakho-ke isikhathi semisebenzi yokulwa nenkungu nokuconsa sincike ngokuphelele ekulawuleni inqubo yokumboza, ikhwalithi ye-ejenti yokugqoka kanye nokusetshenziswa ifilimu yezolimo. Isikhathi sokuphila ngokuvamile singafinyelela ngaphezu konyaka owodwa.
Kunjalo,ifilimu ye-groutingfuthi inokukhubazeka ngakunye. Okokuqala, i-ejenti yokudonsa inkungu inamathele ebusweni befilimu yezolimo, ngakho ukunamathela kwayo akunamandla kangako. Amandla angaphandle kulula ukubangela ukulimala kokugqoka, ukuze kube lula ukubangela ukuvuza endaweni eyonakele. Isibonelo, lapho ishede, ukungqubuzana phakathi kodonga lwangaphakathi lweshede nezigxobo zoqalo eshedini, isimo esishiwo ngenhla sizokwenzeka lapho izitshalo eziphakeme zihlangana nefilimu yezolimo. Ngesikhathi esifanayo, akulula ukusebenzisa ifilimu ye-grout izitshalo ezithanda izinga lokushisa eliphezulu nomswakama, njengekhukhamba, i-gourd ebabayo, i-melon njalonjalo. Nokho, ukushiyeka akulifihli iqiniso. Noma ngabe kwenzeka lesi simo esingenhla, umphumela wefilimu yezolimo usesobala kakhulu kunefilimu yendabuko yezolimo. Ngenxa yokuthi lo mkhiqizo unezinzuzo ezisobala ekuqedeni inkungu nokuconsa, futhi izindleko ziphansi, cishe yuan angu-1.1-1.2 ngemitha yesikwele. Uma kuqhathaniswa nentengo yefilimu ye-EVA, izindleko zokufakwayo ziphansi, ngakho-ke ithandwa abalimi abaningi bemifino. Ifilimu yamanje ye-grouting iyahluka ngekhwalithi yomkhiqizo ngenxa yamazinga ahlukene wokugcwalisa. Abalimi bemifino kufanele bahlole kaningi emkhiqizweni ngamunye lapho bethenga futhi bakhethe inkampani esemthethweni abazoyithenga.
4. EVA ifilimu.Ifilimu ye-EVA greenhouseiwuhlobo lwefilimu yepulasitiki ebamba ukushisa esetshenziswa manje ngamanani amakhulu. Lolu hlobo lwefilimu lunokudluliswa kokukhanya okukhulu, nokudluliswa kokukhanya okungaphezu kuka-92%; inezindawo ezinhle kakhulu zokunqanda inkungu, futhi isikhathi sokuconsa yizi-4- Ngaphezu kwezinyanga eziyisi-6; inokugcina ukushisa okuhle kakhulu, ukumelana nothuli kanye nokumelana nokuguga okukhulu (ngaphezu kwezinyanga eziyi-18). Ifilimu ye-EVA enezingqimba ezintathu ingasetshenziswa kabanzi ukuze kukhiqizwe imifino engangcoli ngokwezomnotho esezingeni eliphezulu, efana nekhukhamba, utamatisi, upelepele, uselwa olubabayo, njll. Ububi ukuthi intengo iphezulu uma kuqhathaniswa. Ngokucaciswa kogqinsi okuhlukile, intengo yamanje yemakethe ithi: 0.08 mm ngokuvamile ngu-2.05-2.1 yuan/imitha-skwele, futhi u-0.09 mm ngu-2.15-2.2 yuan/imitha-skwele.
5. Ifilimu ye-PO nayo iwuhlobo olusha lwefilimu oluthuthukiswe eminyakeni yamuva nje. Lolu hlobo lwefilimu ifilimu yezolimo ye-polyolefin esezingeni eliphezulu ekhiqizwa nge-polyolefin. Ine-transmittance light, anti-fogging eqhubekayo, ukuconsa kanye nokugcina ukushisa. Njll., isendaweni ehamba phambili phakathi kwamafilimu abamba ukushisa, asebenza ngezindleko eziphakeme, futhi iwuhlobo lwefilimu oluthembisayo kakhulu. Ugqinsi lwamanje lwefilimu ye-po lusukela emiculweni engu-8, imicu engu-12, nemicu engu-15.
