Novel substrate for simple roof greening by applying greening wastes and preparation method thereof

Abstract

The invention discloses a novel substrate for simple roof greening by applying greening wastes and a preparation method thereof. The novel substrate for simple roof greening is prepared from greeningwaste decomposed compost, grass carbon, volcanic rock and vermiculite. The preparation method comprises the following steps: selecting the greening waste decomposed compost with a particle size of less than 5 mm, and mixing the greening waste decomposed compost with the grass carbon, the volcanic rock and the vermiculite according to a volume ratio of (40-70%): (0-25%): (18-36%): (12-24%). The novel substrate provided by the invention fully utilizes nutrient supply properties of the greening wastes, water-retaining and nutrient-retaining properties of the vermiculite and stability and root-fixing properties of the volcanic rock, provides good growth conditions for a plant in the aspects of water, nutrients, air and heat, and meets the needs of simple roof greening for plantation and growthof the plant; meanwhile, physical and chemical property indexes of the substrate all meet the requirements of simple roof greening; and the novel substrate provided by the invention replaces a grasscarbon substrate with urban greening wastes, so waste is turned into treasure; a novel way for treatment of the urban greening wastes is opened up; the usage amount of grass carbon resources is reduced; the cost of the substrate is lowered; and sustainable development of resources and the environment can be easily realized.

Description

technical field [0001] The invention belongs to the field of slope engineering greening, and in particular relates to a new simple roof greening substrate using greening waste and a preparation method thereof. Background technique [0002] Roof greening refers to all planting techniques that are separated from the ground. It is a kind of roof greening, as well as terraces, roofs, balconies, walls, tops of underground garages, overpasses, etc., that are not connected to the natural soil on the ground. The greening of special spaces of buildings and structures is one of the important ways of urban three-dimensional greening. According to the type of plant selection and the complexity of the design, roof greening can be divided into garden roof greening and simple roof greening. Compared with garden-style roof greening with rich plant hierarchy, simple roof greening mainly uses ground cover plants with strong resistance such as turf and sedum for greening, which has low cost, ...

AI Technical Summary

Problems solved by technology

Patent Application No. CN104291932A "A Sedum Plant Roof Greening Substrate and Its Preparation Method" discloses a roof greening cultivation substrate, which is a compost product formed by mixing composting landscaping waste compost and urban domestic sludge with perlite It is made according to the volume ratio of 5-15:1, but there are the following problems: 1. The proportion of compost is too high. As time goes by, the matrix gradually decomposes, and the matrix layer becomes thinner. 2. There may be heavy metals in the sludge, and there is a risk of environmental pollution when it is applied to roof greening

[0007] The patent application number is CN105724208A "A Sedum Plant Roof Greening Substrate and Its Preparation Method", which discloses a light-weight roof greening planting substrate mainly composed of industrial and agricultural waste, which is composed of fly ash, cinder, straw grains, garden The volume ratio of waste and yellow loam is 11%-20%: 10%-22%: 20%-25%: 20%-32%: 18%-20%. The preparation method of the invention is complicated and does not use specific physical and chemical methods. Properties Numerical argumentation itself has excellent properties, but has certain limitations

[0008] Patent Application No. CN106508646A "A Method for Roof Soilless Cultivation of Chives" and Patent Application No. CN103787731A "A New Type of Roof Greening Substrate and Roof Greening Method" both use greening waste as a matrix material on roof greening, but there are Heavy metal pollution of matrix material sludge

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