利用生物工程水泥坡面的一种经济有效的新技术。它还能应用于排水沟或河岸，起到防洪的作用。
香根草是一种草本植物，具有抗旱耐涝性强的生物特性。而且，它不结果实，这就意味着它不具培植能力，不会成为优势物种。

In order to prevent the washout of existing soil, erosion control mat will be laid to protect the surface for slope with gradient greater than 35o as well as to minimize the raindrop impact.

However, it is found that in many cases, grass could not grow well because those commonly used erosion control mat is too thick for the stolon (secondary horizontal root) of creeping plant to pass through the mat and to develop the secondary generation.Therefore, stolon can just only grow on the surface of the mat without re-anchoring the soil surface to receive adequate nutrient.

After a period of time, the grass will wilt because of insufficient nutrient to support the growth only provided by the primary shoot.Under this situation, re-hydroseeding is not a significant method to tackle this problem because the seeds by re-hydroseeding still cannot get through the mat and grow underplaying.Thus, Planter Tube System is introduced to solve the proble