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塑料薄膜地面覆盖栽培,是近代发展起来的一项新的栽培技术,是保护地栽培的又一新形式。国外在五十年代初开始试验研究,很快便广泛应用于蔬菜、花生、棉花、烤烟、早稻等大面积生产上。 1978年我国各地进行了地覆栽培试验研究,证明它是一项能够促进多种农作物早熟增产,提高农产品品质,简便易行的栽培技术措施。我省大部分地区春旱严重,土壤温度升高迟缓,各种春播蔬菜的根系,前期生长发育缓慢,生育期延长。为了提早春播蔬菜成熟上市时期,增加淡季蔬菜供应品种,研究薄膜地面覆盖新技术。1980年3月,我们在斗南大队进行了塑料薄膜复盖地面栽培茄子试验,观察在昆明春季晴天多、日照充足、地面辐射强的气候条件下,茄子生长发育情况及早熟增产效果,以及地膜覆盖对土壤水分,土壤温度,土壤养分的影响。
Plastic film ground cover cultivation is a new cultivation technology developed in modern times and is another new form of protected cultivation. Abroad in the early fifties began experimental study, it is soon widely used in vegetables, peanuts, cotton, tobacco, rice and other large-scale production. In 1978, the experiment of ground cover cultivation was carried out in all parts of China, proving that it is a cultivation technique that can promote early maturity and increased yield of many crops and improve the quality of agricultural products. Spring drought in most parts of our province, slow soil temperature rise, all kinds of spring sowing vegetables root system, early growth and development slow, growth period extended. In order to early spring vegetables mature market, increase the supply of off-season vegetables varieties, research new technology of film ground cover. In March 1980, we carried out plastic film covered ground plastic eggplants experiment in Dounan Brigade. The growth and development of eggplants and premature ripening and yield increase were observed in Kunming in sunny spring with abundant sunshine and strong ground radiation. Cover effects on soil moisture, soil temperature, soil nutrients.