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应用三膜一盖加温技术可以使西甜瓜春季提前到“五一”左右上市，获得较高的收益，但要达到这个目标，必须秋季做好各种准备工作。而且，在热风炉的安装和使用过程中，要严格执行操作规程。 一、整地准备 上冻前，要在大棚四周挖好防寒沟，沟深40厘米，宽20厘米。大棚内
Application of three membrane-covered heating technology can make cantaloupe advance to the “May 1” listing, access to higher returns, but to achieve this goal, we must do a good job in a variety of preparations for the fall. Moreover, in the hot stove installation and use of the process, to strictly enforce the operating procedures. First, preparation for land preparation Before freezing, to dig a good cold ditch in the shed around the ditch, 40 cm deep, 20 cm wide. Inside the greenhouse