绿化植物废弃物堆肥改良高速公路绿地土壤效果研究
2021-09-03黄丽丹韦路易黄旭光李志胜廖堂贵钟琼琼黄玲璞秦玲杨思霞陆炎松霍行
黄丽丹 韦路易 黄旭光 李志胜 廖堂贵 钟琼琼 黄玲璞 秦玲 杨思霞 陆炎松 霍行



摘要 [目的]研究绿化植物废弃物堆肥对高速公路绿地土壤持水量和肥力的影响。[方法]以主成分权重法构建综合评价函数(SQI)对土壤肥力特征和持水能力进行综合评价。[结果]绿化废弃物堆肥能明显改善土壤的持水能力,增加有机质、全氮、全磷、水解氮、有效磷、速效钾含量,降低土壤密度和pH。土壤综合评价以堆肥施用量为30 015.0 kg/hm2的效果最好。[结论]绿化植物废弃物堆肥对提高高速公路土壤质量、降低养护费用有积极作用,也有利于改善区域生态环境。建议连续多年施用绿化废弃物堆肥改良土壤,每次施用量控制在30 015.0 kg/hm2以内,减少化肥的使用。
关键词 绿化植物废弃物;堆肥;改良;高速公路绿地;土壤质量
中图分类号 S 156 文献标识码 A 文章编号 0517-6611(2021)15-0058-05
Abstract [Objective] To study the effects of greenery waste compost on the moisture capacity and fertility of expressway green space.[Method]The characteristics of soil fertility and waterholding capacity were comprehensively evaluated using the method of comprehensive evaluation function (SQI) which was built up by the principal component weight method.[Result] The greenery waste compost could significantly improve soil waterholding capacity, increase the contents of organic matter, total nitrogen, total phosphorus, hydrolytic nitrogen, available phosphorus and available potassium,and reduce the soil density and pH. The result of soil comprehensive evaluation showed that the effect of compost application of 30 015.0 kg/hm2 was the best.[Conclusion]The greening plant waste composting has a positive role in improving highway soil quality and reducing maintenance costs, as well as improving the regional ecological environment.It was suggested that the greenery waste compost should be applied to modify soil for consecutive years,and the amount of each application should be controlled within 30 015.0 kg/hm2 to reduce the use of chemical fertilizers.
Key words Greening plant waste;Compost;Improvement;Expressway green;Soil quality
基金項目 南宁市科技计划项目“南宁市绿化植物废弃物资源化处理关键技术研究和应用示范”(20193112)。
作者简介 黄丽丹(1981—),女,广西田东人,高级工程师,硕士,从事城市固体废弃物的资源化利用研究。
收稿日期 2020-12-02
随着我国高速公路建设的快速发展和全社会环境保护意识的普遍提高,高速公路绿化正在受到越来越多的关注,高速公路绿化不仅可以提供安全舒适的交通运输环境,与天然森林生态系统类似,其还具有涵养水源、保护生物多样性、防止水土流失、过滤污染物等功能,对交通运输安全和改善区域生态环境具有十分重要的意义[1-2]。然而,在高速公路跨越式发展的背景下,高速公路建设对生态环境和景观产生巨大的负面影响,相对于公园、住宅区、单位附属绿地,公路绿地土壤质量对于公路绿化的影响更大,因其理化性质更差,养分更缺乏[3-5]。……
