改良型生态混凝土植生性能研究

Study on planting performance of improved ecological concrete

传统人工护坡技术景观性和植物亲和性差,不符合"生态"理念,因此研制一种具有良好植物亲和性和景观性的现代人工生态坡岸保护技术极为重要。文章通过对不同类型生态混凝土(Eco-concrete,EC)植生性能研究发现,高羊茅的生长发芽速度最快,其次是三叶草,狗牙根的生长发芽速度最慢。不同覆土厚度对三种植物的生长发芽均有一定的影响,当覆土厚度为1cm时,三种植物生长状况较差;当覆土厚度为2cm和3cm时,高羊茅生长发芽态势良好,而三叶草和狗牙根生长情况较差。通过对5~10mm、20~40mm和30~50mm三种不同粒径骨料制成的EC中植物生长情况的观察发现,在骨料粒径为5~10mm的EC中,植物生长情况很差,死亡率高;在骨料粒径为20~40mm和30~50mm的EC中,植物生长情况良好。

Traditional artificial slope protection technology has poor landscape and plant affinity,which does not conform to the concept of "ecology".Therefore,it is very important to develop a modern artificial ecological slope protection technology with good plant affinity and landscape. In this paper, the growth and germination rate of tall fescue is the fastest, followed by clover, and bermudagrass is the slowest. When the thickness of covering soil was 1 cm, the growth status of the three plants was poor;when the thickness of soil was 2 cm and 3 cm,the growth and germination of tall fescue was good,while that of clover and bermudagrass was poor. By observing the growth of plants in EC made of aggregates of 5-10 mm,20-40 mm and 30-50 mm, it was found that the growth of plants was poor and the mortality rate was high in EC with aggregate size of 5-10 mm, and good in EC with 20-40 mm and 30-50 mm aggregate sizes.