摘要
为探讨路肩不同植被生长情况及对土壤性质的影响,以公路(二车段)路肩为研究对象,对比分析3种配置植物的生长情况及土壤性质。结果表明,路肩-2紫叶李+紫花苜蓿模式植被生长情况最好,紫叶李株高为3.17 m,年高生长量为56.50 cm,胸径为5.08 cm,冠幅为0.82 m。纯林配置模式与混交配置模式土壤容重差异显著,不同混交模式土壤容重差异不显著,不同植被有机质、全氮、全钾含量随土层深度增加而减小,且不同植被配置模式全氮含量差异显著(P<0.05)。综合考虑,紫叶李+紫花苜蓿混交模式下的植物生长情况及对土壤性质的改善效果最佳。
To investigate the growth conditions of different vegetation on road shoulders and their effects on soil properties,the road shoulders of a expressway(two-lane section)was selected as the research object,and the growth conditions and soil properties of three vegetation configurations were compared and analyzed.The results showed that the Purpleleaf Plum+Alfalfa had the best vegetation growth,with Purpleleaf Plum reaching a height of 3.17 m,an annual height growth of 56.50 cm,a diameter at breast height of 5.08 cm,and a canopy width of 0.82 m.There was a significant difference were observed in soil moisture content,between pure forest configuration and mixed planting configuration,while there was no significant difference in soil bulk density among different mixed planting configurations.The organic matter,total nitrogen,and total potassium contents of different vegetation decreased with the increase of soil depth,and the total nitrogen content of different vegetation configuration models was significantly different(P<0.05).Considering all factors,the mixed planting model of Purple Leaf Plum+Alfalfa had the best plant growth and soil property improvement effect.
作者
刘涛
张富
李维弟
刘雪峰
LIU Tao;ZHANG Fu;LI Weidi;LIU Xuefeng(College of Forestry,Gansu Agricultural University,Lanzhou,Gansu 730070;Wanchuan Ecological Technology Development Co,Ltd,Lanzhou,Gansu 730070;Geological Hazards Prevention Institute,Gansu Academy of Sciences,Lanzhou,Gansu 730000)
出处
《热带农业工程》
2025年第2期97-102,共6页
Tropical Agricultural Engineering
关键词
公路
路肩
植被生长
土壤性质
expressway
road shoulder
vegetation growth
soil properties
