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用0.1毫米厚的塑料薄膜和0.015毫米厚的地膜,对西瓜进行双覆盖栽培,使西瓜的成熟时间提前到了5月下旬至6月上旬。这对补充北方水果淡季供应起了一定作用。我市1981年开始小面积试验示范西瓜的双覆盖栽培,经各方面的努力,取得成功。1982年即发展到400亩,1983年发展到1,115亩。西瓜的上市时间比一般露地西瓜提前了40夭,比地膜西瓜提前了15—20天。双覆盖西瓜头茬瓜平均单产4,050斤,亩产值724元,头茬瓜收摘后又及时选留了二茬瓜,进
With 0.1 mm thick plastic film and 0.015 mm thick film, the double-covered cultivation of watermelon, watermelon maturation time advanced to late May to early June. This has played a role in supplementing the off-season supply of northern fruits. In 1981, our city began to conduct double-coverage cultivation of small-scale pilot demonstration watermelon and achieved success through various efforts. It developed to 400 mu in 1982 and to 1,115 mu in 1983. Watermelon market time than the average open watermelon 40 ahead of schedule, than the watermelon mulching 15-20 days earlier. Double covering watermelon head crop average yield of 4,050 pounds, 724 yuan per mu output, the first crop of melon harvest and then pick the second crop of melon,