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抗旱防涝地膜是由一上部开口的盒状地膜体构成 ,在盒状的地膜体的底部设有溢水孔 ,溢水孔呈管状竖立于地膜底部 ,上口高度低于地膜体四周的边沿。本品能有效地防止水向地下渗漏 ,非常适合干旱地区 ,尤其是渗漏严重的沙性土地带使用 ,并具有防盐碱的作用。 (ＺＬ 992 0 90 92 .
The drought-resistant and water-proof membrane is composed of a box-shaped membrane membrane body with an upper opening. An overflow hole is arranged at the bottom of the box membrane membrane body. The overflow hole is tubular and stands at the bottom of the membrane membrane. This product can effectively prevent the leakage of water to the ground, is very suitable for arid areas, especially the sand seepage zone with serious leakage and has the role of anti-saline. (ZL 992 0 90 92.