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据《中国经济新闻》讯,双茬西瓜自1985年在河北省迁安县安家以来,造福百姓,极受欢迎,多的亩收入可达3400多元。北方在种植双茬西瓜时要做到:种头茬西瓜时要双层地膜覆盖,以缩短西瓜的生长期,促使早结果,一般可提早25～30天摘瓜,亩产可
According to “China Economic News” News, double crop of watermelon since Qian’an in Qian’an County in Hebei Province in 1985, for the benefit of people, very popular, more mu income up to 3400 yuan. The northern planting of double-cropped watermelon to be done: when the first crop of watermelon to double-layer plastic film to shorten the growth of watermelon, prompting early results, usually 25 to 30 days early pick melon, mu