Soilless culture substrate with nonmetal mineral matrix and preparation method

Abstract

The invention discloses a soilless culture substrate prepared by nonmetal minerals as well as a preparation method for the same. The soilless culture substrate with a nonmetal mineral matrix is prepared through mixing of expanded perlite, zeolite, bentonite, vermiculite and so forth with the equal mass proportion; the substrate contains minerals needed by plants; and nutrient solutions can be added during use according to different types of plants. The substrate has the advantages that chemical stability is high; physical-chemical absorption capacity and buffer capacity are high; physical performance such as volume weight, total porosity, water holding capacity and gas water ratio can be adjusted easily; the substrate is non-toxic, sterile, non-corrosive, and free of abnormal smells; raw materials are cheap and can be obtained easily; use is convenient; repeated use is allowed, etc. The soilless culture substrate is an economic, environment-friendly, slow-release pure inorganic soilless culture substrate with the middle volume weight, capable of repeated use. The substrate is highly applicable to soilless culture of urban vertical greening, roof greening, greening of living rooms and balconies, micro lawns, etc.

Description

technical field [0001] The invention relates to the technical field of soilless cultivation, in particular to a soilless cultivation substrate prepared from non-metallic minerals and a preparation method thereof. Background technique [0002] Soilless cultivation refers to the method of cultivating crops with nutrient solution or solid substrate plus nutrient solution without natural soil, including hydroponics, fog cultivation and substrate cultivation. Soilless cultivation is widely used in crop seedling cultivation, flower seedling cultivation, lawn cultivation, economic forest seedling cultivation, urban building wall roof greening and family balcony greening due to its advantages of light weight, cleanliness, no weeds, and avoiding soil pollution. Soilless cultivation can be divided into two categories: substrate-free cultivation and substrate cultivation according to whether substrates are used. The commonly used substrate materials are organic substances: including v...

AI Technical Summary

Problems solved by technology

At present, domestic research on soilless cultivation substrates focuses on replacing peat with new materials, such as rice husk, coconut shell, bagasse, mushroom residue composite substrates, etc. usage is still high

There are also studies on reducing the amount of peat by adding perlite, vermiculite, etc. to the mixed substrate, but there are few reports on soilless cultivation substrates that use non-metallic minerals.