植物根系抗拉试验研究

Study on Tensile Test of Plant Roots

通过对华中地区瑜伽山边坡中紫穗槐、紫花苜蓿、栾树、木子树根系抗拉性能试验,探讨4种植物根系极限抗拉强度、最大抗拉力、伸长率与随直径大小变化的规律。通过分析可知,4种植物根系极限抗拉强度随根系直径增大而减小,最大抗拉力随直径增加而增加;紫穗槐、紫花苜蓿和木子树根系伸长率随直径增加呈减小趋势,而栾树根系伸长率先随直径增加而增加,当根系直径超过2mm后随直径增加而减小。

Based on roots tensile test about Amorpha fruticosa, Medicago sativa, Koelreuteria paniculata and Sapium sebiferum on the slope of Yujia mountain in central region of China, the article discussed the discipline that root＇ s ultimate tensile strength, the largest anti-rally and elongation change with diameter. The results showed that four types plant roots＇ ultimate tensile strength decreases with diameter increasing, and the largest anti-rally increases with diameter increasing. The roots＇ elongation decreases with diameter increasing in A. fruticosa, M. sativa and S. sebiferum, but K. paniculata roots＇ elongation increases with diameter increasing when the diameter is less than 2 mm, furthermore the elongation decreases with diameter increasing.