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近几年来,河北省乐亭县在大棚甜瓜生产中通过引进新品种,采取3膜覆盖,嫁接育苗、吊蔓生长、人工辅助授粉等先进技术,实现了深冬生产,早春上市。到2005年底,全县棚室甜瓜总面积已达4122公顷,总产14.3万吨,总产值4.7亿元,成为河北省最大的甜瓜生产县和北方最大的设施甜瓜生产县,?
In recent years, Laoting County, Hebei Province, introduced new varieties through introduction of new varieties in melon production in greenhouses and adopted advanced technologies such as 3-film coverage, grafting and seedling raising, hanging vine growth and artificial pollination to achieve winter production and listing in early spring. By the end of 2005, the total area of cantaloupe in the county reached 4,122 hectares with a total output of 143,000 tons and a total output value of 470 million yuan. It has become the largest melon-producing county in Hebei Province and the largest melon-producing county in the north.