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通过对种植在试验区的柠条锦鸡儿和霸王2种灌木进行生长指标统计和野外拉拔试验,评价两种灌木的护坡效应。生长指标统计结果表明,2种灌木的株高、根长、根径、侧根数均随生长期的增加而增大,且柠条锦鸡儿的根长、侧根数明显大于同生长期的霸王,而株高、根径要小于霸王;原位拉拔试验得出,2种灌木的拔出力均随株高、根长、根径、侧根数的增加而增大,且霸王的拔出力要比同生长期的柠条锦鸡儿的拔出力大。综合以上,即通过对试验区2种灌木株高、根长等生长指标以及根系拔出力等综合评价,柠条锦鸡儿护坡效应较霸王略为显著。
The slope protection effect of two shrubs was evaluated by growth index statistics and field pull-out test on Caragana korshinskii and Bawang shrubs planted in the experimental area. The results of growth index showed that the plant height, root length, root diameter and lateral root number of two shrubs increased with the growth period, and the root length and lateral root number of Caragana korshinskii were significantly greater than that of the same growing king, While the plant height and root diameter should be smaller than that of Overlord. The in situ pullout test showed that the pullout power of two shrubs increased with the increase of plant height, root length, root diameter and lateral root number, Caragana than the same period of growth of Caragana pull out. Based on the above analysis, the effects of Caragana korshinskii slope revetment were slightly more significant than that of King by comprehensive evaluation of the growth indexes such as plant height and root length of two shrubs in the experimental area and the pull-out power of the roots.