由于小拱棚双膜覆盖栽培的早熟效果显著，比地膜覆盖栽培可提早１５～２０天成熟，经济效益好。小拱棚双膜覆盖西瓜，在栽培技术上除了与地膜覆盖栽培相同部分外，还应注意以下技术要点。１．早育苗，育大苗。于２月中下旬进行地热线温床育苗，也可采用火炕育苗，３月下旬当生? As a result of a small arch double-membrane cultivation of early maturing effect significantly than the plastic film mulching can be mature 15 to 20 days earlier, good economic returns. Small shed double film covered watermelon, cultivation techniques in addition to the same part of the plastic film mulch cultivation, but also pay attention to the following technical points. 1. Early nursery, breeding big seedlings. In mid-to-late February geothermal hotbed breeding, but also can be used nursery nursery, in late March when students?