Kopo

Sesebelisoa sa Sehlahisoa

Ka tlhahiso ea li-polymers tse phahameng tsa limolek'hule-polyvinyl chloride le polyethylene, lifilimi tsa polasetiki li sebelisoa haholo temong.Japane le linaha tsa Europe le Amerika li ile tsa atleha ho sebelisa filimi ea greenhouse bakeng sa ho koahela li-hotbeds mathoasong a lilemo tsa bo-1950, ’me ka mor’a moo li ile tsa koahela matloana a manyenyane le matlo a sethopo ka liphello tse ntle.naha ea heso e ile ea hlahisa filimi ea temo ea polyvinyl chloride nakong ea hoetla ea 1955. E ile ea sebelisoa ka lekhetlo la pele ka li-sheds tse nyenyane ho koahela meroho Beijing, e ileng ea finyella phello ea khōlo ea pele le keketseho ea lihlahisoa.Sethopo sa sethopo qalong e ne e le thepa e khethehileng ea tlhahiso ea meroho, 'me ka tsoelo-pele ea tlhahiso, ho sebelisoa ha sethopo ho fetohile ho pharaletseng haholoanyane.Hona joale, sethopo se 'nile sa sebelisoa bakeng sa ho lema lipalesa tse entsoeng ka lipitsa le lipalesa tse khaotsoeng;tlhahiso ea lifate tsa litholoana e sebelisoa bakeng sa temo ea morara, fragole, mahapu, mahapu, liperekisi le lilamunu;tlhahiso ea meru e sebelisetsoa ho lema lipeo tsa lifate le lifate tsa mekhabiso;indasteri ea ho ikatisa e sebelisoa bakeng sa sericulture le ho tsoalisa.Khoho, likhomo, kolobe, tlhapi le li-fry, joalo-joalo.

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