四种不同厚度的绿化废弃物对土石质边坡植被生长高度和土壤保墒的影响
Effects of four kinds of green wastes with different thickness on vegetation growth height and soil moisture conservation in soil-rock slope
为实现修剪产生的绿化废弃物分类再利用,研究其处理后作为覆盖物对覆盖下植被生长高度和土壤保墒的影响,本研究以华北地区 4种典型绿化树种枝叶为试验材料,选取种植常用绿化植物(紫花苜蓿、冰草、披碱草、狗尾巴草、紫穗槐、胡枝子),并用无覆盖作为对照,分析不同种类绿化废弃物覆盖和不同绿化废弃物覆盖厚度对植株高度的影响。结果表明,为了解决绿化废弃物和灌草竞争的问题,可以把紫穗槐和冰草或紫穗槐和狗尾草进行配合撒播,灌木植物紫穗槐适合在 25°阴坡覆盖紫穗槐枝叶 5-6cm下播种,草本植物冰草和狗尾草适合在阳坡覆盖 3-4cm或阴坡覆盖 1-2cm下播种。同时,火炬树枝叶不适合覆盖。
In order to realize the classification and reuse of the green waste generated by pruning and study the effect of treated as mulch on the growth height of vegetation and soil moisture retention under mulch,this study took the branches and leaves of four typical green tree species in North China as experimental materials,and selected common green plants(alfalfa,ice grass,lympium,setaria,fructus fruticosa,and Hu mieu)as the control,and used no mulch.The effects of different kinds of green waste cover and different thickness of green waste cover on plant height were analyzed.The results showed that,in order to solve the problem of afforestation waste and shrub competition,it could be combined with amorpha fruticosa or amorpha fruticosa and setaria.Shrub amorpha fruticosa was suitable for sowing under the cover of 5-6cm of amorpha fruticosa branches and leaves on 25° shady slope,while herb amorpha fruticosa and setaria were suitable for sowing under the cover of 3-4cm on the positive slope or 1-2cm on the negative slope.Meanwhile,the loblolly leaves are not suitable for mulching.
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