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日本是利用塑料薄膜覆盖栽培技术最早的国家之一,我国1979年由日本引进,在多种作物上试验,增产效益显著,很快得到推广。甜菜地膜覆盖栽培在日本由于生长季节雨水多并不成功。其它国家甜菜栽培亦无此
Japan is one of the earliest countries to use plastic film to cover cultivation techniques. In 1979, Japan imported it from Japan and experimented on a variety of crops. The yield increase was remarkable and was quickly promoted. Sugar beet mulching cultivation in Japan because of the growing season of rain and more unsuccessful. Beet cultivation in other countries nor so