Environment-friendly light porous simulated soil cultivation medium body and preparation method thereof

Abstract

The invention discloses an environment-friendly light porous simulated soil cultivation medium body and a preparation method thereof. The cultivation medium body is of a continuous integrated porous simulated soil sponge structure and is prepared from 1-10 parts by weight of polyurethane binding body, 1-50 parts by weight of filler, 0.01-50 parts by weight of auxiliary material and 0-5 parts by weight of embedded functional matter. The filler is at least one of organic filler, inorganic filler and organic and inorganic composite filler. The auxiliary material is a mixture of at least two of a surface active agent, a catalyst, a chain extender, a fire retardant and a foaming agent. The embedded functional matter is at least one of plant seeds, a rooting agent, a soil sanitizer, a straw fermenting agent, potash fertilizer, phosphatic fertilizer, nitrogenous fertilizer and compound fertilizer. The prepared simulated soil cultivation medium body is low in weight, high in aperture ratio, good in hydrophilia and water retention performance and excellent in mechanical property, and can be applied to the fields of vertical greening, roof greening, urban landscaping, indoor greening, intelligent greening, slope restoration, gardens and horticulture, ecological remediation, ecological management, soilless culture and the like.

Description

technical field [0001] The invention belongs to the technical field of plant cultivation substrates, in particular to an environmentally friendly and portable porous soil imitation cultivation substrate and a preparation method thereof. Background technique [0002] Solid substrates can be divided into organic substrates (natural such as sawdust, bark, non-woven fabrics, straw fiber non-woven fabrics, etc.), inorganic substrates (granular ones such as ceramsite; foamy ones such as volcanic lava; fibrous ones such as rock Cotton, sponge; others such as silica gel), formula matrix (inorganic-inorganic type such as ceramsite + perlite; organic-organic type such as peat + bubble flower; inorganic-organic type such as peat + perlite) (Xie Xiaoyu , Zou Zhirong. Research progress of soilless cultivation substrates for vegetables in China. China Agronomy Bulletin, 2005,21:280-283). Inorganic substrate basically does not contain nutrients, has no biological activity, and can basical...

AI Technical Summary

Problems solved by technology

Although a small number of patents have the report of continuous integrated matrix, as in the publication number CN105325269A, foamed cement is used as the matrix, and porous inorganic substances such as perlite are filled to make a hard cultivation matrix body, but it has high strength, low porosity, and water retention. Insufficient water absorption rate and the need to use nutrient solution, etc., cannot solve the relationship between water, air and nutrients required for plant growth

The publication number is CN102639619A, which is formed by a resin composition mainly composed of polylactic acid resin. The filler and the foam of the resin composition are pulverized to form a powder, and the pore walls formed by the fragments of the powder are bonded to each other. The continuous cell structure of the porous body is described, but this patent has the disadvantages of large amount of resin, high energy consumption in crushing, drying, dispersing and other processes, and few types of fillers to choose from.