当前新建大棚棚面骨架采用的多是镀锌钢管焊接或一体液压而成，俗称钢筋铁骨。而菜农在安装前，一般会在钢管上端焊接一块W型的连接件，安装时把钢管的连接件直接卡槽到后砌柱子上，最后再用铁丝加以捆绑固定。确实，这样做，能保持钢架最大的稳定性，但是却暴露出一个缺陷，在上膜时，容易划损薄膜，缩减薄膜的使用寿命。同时，为了防风，还得重新设置压膜绳，非常麻烦。 The construction of the new large shed frame is made of galvanized steel pipe welding or hydraulic efficiency, commonly known as the iron and steel bones. And vegetable farmers before installation, usually in the upper pole welding a w-shaped fittings, installation of steel pipe fittings directly after the card slot to build by laying bricks or stones on the pillar, and then be bound with iron wire fixation. Indeed, in so doing, can maintain the stability of the largest steel frame, but exposed a flaw, in the film, easily scratched thin film, the service life of shrink film. At the same time, to prevent wind, still have to reset the pressure film line, very troublesome. 不少菜农新建大棚或改造大棚，采用了新的压膜方法，那就是直接应用卡槽杆。这种卡槽杆不仅对薄膜保护不少，而且完全替代压膜绳，效果不错。 A lot of vegetable farmers build big shed or transform big shed, adopt new pressure film method, that is direct application card slot pole. Not only do these grooves not only protect a lot of the film, but also completely replace the pressure film string. 应用卡槽杆的周师傅说，这种卡槽杆为热镀锌材料，比以前拖膜系列的设施又有了新的改进，材料为 为海钢Q235料，比小圆管硬度能增加40个，设置时可每间设置一个，也可每间设置4-5根，直接代替圆管。卡槽杆中间凹陷，可以用卡簧固定薄膜，增强薄膜的抗风能力。他已经用了一年，效果很好。 Application of card slot of the master, said the card slot for hot dip galvanized material, pulling the film series than before there has been a new facilities improve, materials for the steel Q235, 40 more than the small round tube hardness, Settings can be set up in every one, also can be set up in every 4-5 root, directly instead of round tube. In the middle of the groove, the film can be fixed with a card spring to enhance the wind resistance of the film. He has been using it for a year and it works very well.