Silicate Solubilizing Streptomyces CS13-6 for Bio-Silicon Fertilizer
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Solution Overview
Problem
Soil in China lacks silicon, is polluted with heavy metals, and existing silicon fertilizers are expensive, environmentally harmful, and disrupt soil structure, necessitating a cost-effective and environmentally friendly solution for improving soil fertility and remediation.
Innovation Solution
The isolation and use of Streptomyces sp. CS13-6, which solubilizes silicate, dissolves phosphorus and potassium, fixes nitrogen, produces siderophores, and IAA, offering a bio-silicon fertilizer for improving soil quality and promoting plant growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If synthetic silicon fertilizers (dicalcium silicate, monocalcium silicate, etc.) are used to improve soil silicon content, then the effective silicon content is high (50% or higher), but they are expensive and difficult to popularize
Solution Approach 1:
The patent uses inexpensive industrial solid wastes (water-quenched blast furnace slag, phosphorus slag, fly ash, waste glass) as raw materials instead of expensive synthetic fertilizers. These materials are processed through biological treatment with silicate-solubilizing bacteria to create an affordable silicon fertilizer that can be widely applied to improve soil silicon content without the high costs associated with synthetic alternatives.
Solution Approach 2:
The patent transforms the chemical form of silicon from insoluble industrial waste forms to bioavailable forms through biological processing. The silicate-solubilizing bacteria change the chemical parameters of the raw materials, converting refractory silicates into soluble silicon compounds that plants can absorb, thereby improving the effectiveness of low-cost raw materials.
2Quantity of substance
If synthetic silicon fertilizers are used to improve soil silicon content, then the silicon content is improved, but they may destroy the soil structure and reduce the organic matter content during long-term application
Solution Approach 1:
The patent changes the chemical and biological parameters of silicon fertilization by using biological processing instead of direct application of synthetic salts. The microbial activity transforms the fertilizer into a more compatible form that releases silicon gradually without causing the harmful effects associated with synthetic fertilizers, thereby maintaining soil structure and organic matter while improving silicon content.
Solution Approach 2:
The silicate-solubilizing bacteria act as an intermediary between the industrial waste materials and the soil system. These microorganisms mediate the transformation process, converting insoluble silicates into bioavailable forms while simultaneously producing organic matter through their metabolic activities, thus avoiding the direct harmful effects of synthetic fertilizer application.
3Ease of manufacture
If industrial solid wastes (water-quenched blast furnace slag, phosphorus slag, fly ash, waste glass) are used for producing silicon fertilizers, then the raw materials are abundant and cost-effective, but they are restricted seriously when used for producing agricultural fertilizers due to increasingly stringent environmental protection requirements
Solution Approach 1:
The patent converts the environmental liability of industrial solid wastes into a beneficial resource. By using silicate-solubilizing bacteria to process these wastes, the invention transforms potentially harmful materials into valuable silicon fertilizer, simultaneously solving the problem of waste disposal and creating an affordable agricultural input that meets environmental standards.
Solution Approach 2:
The biological processing system acts as an intermediary that transforms industrial wastes into environmentally compliant fertilizer products. The silicate-solubilizing bacteria mediate the conversion process, ensuring that the final product meets environmental protection requirements while retaining the cost advantages of using abundant industrial waste materials.
Data Source
AI summary
The present invention relates to an efficient silicate solubilizing Streptomyces sp. CS13-6 with a preservation No. of CGMCC No. 25523, which has high capabilities of silicate solubilization, dissolving phosphorus and potassium, fixing nitrogen, and producing siderophore and IAA. The strain can grow well at pH 5-10 and 20-40° C. In addition, it can grow normally when the NaCl content is 4%, and has high acid, alkali and salt resistance and wide temperature adaptability. The present invention further discloses use of the strain in promoting plant growth, improving soil quality and the like. The strain can be used as an active ingredient for preparation of biological silicon fertilizers, soil conditioners, etc., so as to effectively improve the nutrient structure in the soil, improve soil quality, reduce the use of chemical fertilizers, and achieve a purpose of improving quality and increasing yield.