早春以小拱棚加地膜双膜覆盖栽培西瓜，一般可比普通地膜覆盖栽培早上市２０天左右，经济效益可观。其栽培技术要点是：１．选用优质早熟的西瓜良种如可选用的品种有：中育一号、郑杂５号、苏密１号、京欣１号、伊选、琼酥等。２．适时早育大苗黄淮平原一般在２月中旬前后... In early spring with a small shed plus double film mulching cultivation of watermelon, mulberry outlet, generally than the ordinary mulching cultivation morning about 20 days, considerable economic benefits. The cultivation techniques are: 1. Selection of high-quality precocious varieties of watermelon seeds such as the optional varieties are: one in the education, Zheng-5, No. 1 Su-Mi, Beijing Xin 1, Iraqi election, Joan crisp and so on. 2. Timely early nursery Huang-Huai Plain generally around mid-February ...