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地膜覆盖是继农用普通塑料薄膜之后得到迅速推广的早稻育秧先进技术。据武汉市郊县1982、1983两年试验示范结果,地膜育秧保温性能与普膜弓棚不相上下,而具有透光好、升温快、昼夜温差较大(在适宜范围内)的特点,从而更有利于干物质的积累,使秧苗生长稳壮,抗寒力增强。1982年观察.广陆矮4号3月30日播种,移栽时地膜秧高18.2厘米,比露地秧高2.1厘米,比普膜弓棚秧矮0.3厘米;假茎宽0.47厘米,比露地秧宽0.05厘米,比普膜弓棚秧也宽0.02厘米。
Film mulching is the advanced technology of early rice seedling raising which is rapidly popularized after ordinary agricultural plastic film. According to the experimental results of 1982 and 1983 in suburban counties of Wuhan, the thermal insulation performance of plastic film seedling cultivation is comparable to that of general plastic arch roofs, and has the characteristics of good light transmission, rapid temperature rise and large temperature difference between day and night (within a suitable range) More conducive to the accumulation of dry matter, so that seedlings grow robust, cold-resistant increase. 1982 observation .Guanglu short 4 March 30 planting, transplanting film mulch height 18.2 cm, 2.1 cm higher than the open field seedling, 0.3 cm shorter than the phylacterulemia; pseudostem width of 0.47 cm, than the open field seedlings 0.05 cm wide, 0.02 cm wider than the canopy roof.