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简述了松木桩拦挡配置灌木护坡技术的方法原理及施工要点,并以北京市延庆县上辛庄水土保持试验基地松木桩拦挡配置灌木护坡试验小区为例,对扦插植物的生长情况、成活率以及小区内土壤的理化性质进行了分析。结果表明:紫穗槐、沙棘生长良好,改良土壤效果显著;施工4年后,紫穗槐、沙棘的新枝高度分别平均增长到132、117.2 cm,新枝基径分别平均增长到0.93、1.33 cm;与空白对照小区相比,扦插紫穗槐区域的土壤有机质含量增加5.06 g/kg,全氮增加0.02 g/kg,速效磷增加5.62 mg/kg,速效钾增加20.55 mg/kg,pH值下降0.11;扦插沙棘区域的土壤有机质含量增加10.15 g/kg,全氮增加0.05 g/kg,速效磷增加5.82 mg/kg,速效钾增加28.06 mg/kg,pH下降0.18。说明沙棘适应性强,改良土壤的作用优于紫穗槐;松木桩拦挡配置灌木护坡技术水土保持效果显著,值得大力推广。
The method principle and construction essentials of pine shingle retaining configuration shrub slope protection are briefly described. Taking the shrub slope protection test plot of pine stump block in Shangxinzhuang soil and water conservation test base in Yanqing County of Beijing as an example, the growth and survival rate of cutting plant As well as the physical and chemical properties of soil in the community were analyzed. The results showed that the Amorpha fruticosa and Hippophae rhamnoides grew well and the soil improvement was remarkable. After 4 years of construction, the new shoot height of Amorpha fruticosa and Seabuckthorn increased to 132,117.2 cm and the average diameter of new shoot increased to 0.93 and 1.33 cm respectively. Compared with the blank control plot, the content of soil organic matter increased 5.06 g / kg, the total nitrogen increased 0.02 g / kg, the available phosphorus increased 5.62 mg / kg, the available potassium increased 20.55 mg / kg and the pH decreased 0.11 ; Soil organic matter content in cuttings increased by 10.15 g / kg, total nitrogen increased by 0.05 g / kg, available phosphorus increased by 5.82 mg / kg, available potassium increased by 28.06 mg / kg and pH decreased by 0.18. The results showed that the adaptability of seabuckthorn was better than that of Amorpha fruticosa. The effect of soil and water conservation of shrub stump shoal configuration shrubs was significant and should be greatly promoted.