Substrate prescription of light-weight roof afforestation prefabricated sedum polytrichoides carpet

Abstract

The invention discloses a substrate prescription of a light-weight roof afforestation prefabricated sedum polytrichoides carpet and an application of the substrate prescription in preparing fibrous root system plant culture. The substrate prescription comprises grass carbon, perlite and palm thread, wherein the volume ratio of the grass carbon, the perlite and the palm thread is 2-6:1-3:0-2; the perlite is expanded perlite and has the expanding times K0 being larger than 5-15 times, the volume weight being smaller than and equal to 80kg / m<3>-200kg / m<3>, the silicon dioxide content of 60-70 percent and the water content of 4-6 percent; the palm thread has the length of 2-10cm, and is 17 percent of the total volume of the substrate; the palm thread has the length of 2-6cm and is 22 percent of the total volume of the substrate; the volume ratio of the grass carbon, the perlite and the palm thread is 4:1:1; the volume ratio of the grass carbon, the perlite and the palm thread is 6:1:2; thelength and the width of the prefabricated sedum polytrichoides carpet are respectively 40cm, and the thickness of the substrate is 2.5cm; and the substrate prescription is applied to the preparationof root system plant during cultivation. The substrate prescription can be widely applied to sloping roofs and sheet flat roof decks in various forms, is convenient, simple and rapid during transportation, spreading or plant material replacement, saves time, improves efficiency and can prevent plant root system injury, landscape damage and even environmental pollution caused by culture medium drop.

Description

technical field [0001] The invention relates to plant cultivation technology, in particular to a horticultural plant cultivation substrate, and more specifically to a substrate formula for a light green roof greening prefabricated sedum carpet. Background technique [0002] The thinner substrate thickness is the most important feature of light green roofs, which not only brings many restrictions to the light green roof system, but also brings many possibilities to the design of the whole system. First of all, a thinner substrate thickness is advantageous from the perspective of buildings, which greatly reduces the weight of the entire vegetation system covering the roof, so that this form of roof greening can be implemented to most existing roofs, while No remodeling is required. On the other hand, from the perspective of plants, a thin layer of substrate is a great limitation, because the thinner the substrate, the less water it can hold, and the faster it dries in summer,...

AI Technical Summary

Problems solved by technology

[0015] (7) Vermiculite: small bulk density, loose and breathable, good water retention and drainage, and certain fertilizer retention capacity, but poor stability, easy to disintegrate into powder, destroy Ventilation and water permeability of mixed matrix

However, due to the excessive bulk density of the soil, it is not conducive to the formation of light roof green grass blankets, so it is necessary to develop new cultivation substrates to improve this unfavorable condition

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