A Study in the Effect of the Jerusalem Artichoke and Vetiver Grass on Coastal Sand Fixation

• Main Authors: Man-Hong Ku, 顧曼弘
• Other Authors: Long-Ming Huang
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/cgi-bin/gs32/gsweb.cgi/login?o=dnclcdr&s=id=%22107NCHU5080037%22.&searchmode=basic

碩士 === 國立中興大學 === 水土保持學系所 === 107 === This research aims at understanding the planting soil influence of Sand Fixation Effect for Jerusalem Artichoke and Vetiver Grass, so designed the environment with Sea sand and Reservoir sludge mixture for plant growth.The sample of reservoir sludge is taken from the Shihmen Reservoir and Baihe Reservoir, with the sample of sea sand taken from the coastal area of Port of Taichung. First, collected samples are placed laboratory to perform the sand property analysis, then to observe the differences of sand fixation effect of different plants in the wind tunnel. Second, planting the Vetiver and Jerusalem Artichoke in different mixing ratios of reservoir sludge and sea sand. Through observing the growth situation recorded by germination test, the best mixing ratio of reservoir sludge and sea sand which is beneficial to the plant growth will be obtained. According to the sand property analysis, the porosity and water-holding capacity of reservoir sludge is higher than that of sea sand. The content of organic matters of reservoir sludge is large. The content of the fertilizer that contains nitrogen, phosphorus, and potassium in the reservoir slime is 9.1、2.6、2.7 times as large as that in the sea sand. Thanks to the high organic matters and fertilizer contents in reservoir sludge, 20% of the reservoir-sludge-and-sea-sand mixing ratio can help the rapid germination of Vetiver. By using the sea sand to conduct the wind tunnel test, it can be concluded that the sand fixation effect of Helianthus tuberosus is better than Vetiver. Compared with the bare sand surface, the sand fixation effect of the plant-growing sand surface has promoted by 78.4%～94.8%.