园林绿化垃圾资源化利用产品在园林绿化中的应用效果评价

为探索园林绿化垃圾资源化利用产品在园林绿化和土壤改良中的实际应用效果,进一步推动园林绿化垃圾的资源化利用。本试验分别将园林绿化资源化利用产品——有机肥和生物质炭应用于城市公园的绿化中,选取红花檵木、大叶油草、紫色狼尾草分别作为园林绿化中的灌木和草本的代表性植物,通过测定不同处理中植物的叶绿素含量、株高以及土壤养分来评价园林绿化垃圾资源化利用产品的应用效果。结果显示：有机肥和生物质炭的使用会有效提高3种植株的叶绿素含量,促进植物生长。有机肥对于红花檵木的土壤养分含量的影响并不一致,但是对于土壤含水率和电导率均有不同程度的提高。另外,有机肥和生物质炭会显著提高大叶油草和紫穗狼尾草的土壤养分含量,更加有利于植物生长。本试验在植株生长和土壤养分这一方面为园林绿化垃圾资源化利用产品在园林绿化中的应用提供了理论依据,同时为园林绿化垃圾的资源化利用奠定了基础。后续的研究中要更加深入的在土壤的物理、化学、生物性质三方面进行,进一步充实上述理论依据。

The Evaluation of Application of Landscaping Waste Resource Utilization Products in Landscaping

To explore the actual application effect of landscaping waste resource utilization products in landscaping and soil improvement, and promote the resource utilization of landscaping waste, in this experiment, organic fertilizer and biomass charcoal, which are the products of landscaping resource utilization, were used in the greening of urban parks. Loropetalum chinensis, Axonopus compressus, and Pennisetum purpurea were selected as shrubs and herbs in landscaping, to evaluate the application effect of landscaping waste resource utilization products by measuring the chlorophyll content, plant height and soil nutrients of plants in different treatments. The results show that the use of organic fertilizer and biochar could effectively increase the chlorophyll content of the three plants and promote plant growth. Organic fertilizers have different effects on the soil nutrient content of Loropetalum chinensis, but could improve the soil moisture content and electrical conductivity. In addition, organic fertilizer and biochar could significantly increase the soil nutrient content of A. compressus and Pennisetum purpurea, which are more conducive to plant growth. This experiment provides a theoretical basis for the application of landscaping waste resource utilization products in landscaping in terms of plant growth and soil nutrients, and at the same time lays a foundation for the resource utilization of landscaping waste. Subsequent research should be carried out on the physical, chemical and biological properties of the soil to further enrich the above theoretical basis.