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Steel slag type soilless culture substrate and preparation method thereof

A technology of soilless cultivation substrate and steel slag type, applied in soilless cultivation, botany equipment and methods, cultivation, etc., can solve the problems of low utilization rate of steel slag, high cost, incomplete nutritional components, etc., to achieve enhanced physical barriers, The effect of high water absorption and avoiding adverse effects

Inactive Publication Date: 2016-05-25
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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Problems solved by technology

[0005] The purpose of the present invention is to provide a soilless cultivation method using metallurgical waste-steel slag as the substrate, to solve the problems of low utilization rate of steel slag in my country and the high cost and incomplete nutritional content of the existing soilless cultivation substrate, and to realize the cultivation of steel slag. At the same time of resource utilization, scientific design and reasonable proportion can avoid the toxic and side effects of steel slag and bring huge social, economic and ecological benefits

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  • Steel slag type soilless culture substrate and preparation method thereof
  • Steel slag type soilless culture substrate and preparation method thereof
  • Steel slag type soilless culture substrate and preparation method thereof

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Embodiment Construction

[0033] The present invention will be further described in detail below in conjunction with specific examples.

[0034] Preparation of steel slag type soilless culture medium:

[0035] (1) Select different types of steel slag from several steel mills, analyze and measure the heavy metals Cr, Cd, Pb, As, and Hg in the steel slag according to the industry-specific unified experimental method of "heavy metal threshold", and select the steel slag with the heavy metal content within the safety limit ;

[0036] (2) Use silicon molybdenum blue colorimetric method to measure the silicon content of the steel slag obtained in step (1), and finally select SiO 2 Three kinds of steel slags S1, S2 and S3 with a content of more than 15wt% (see Table 1 for specific physical and chemical properties);

[0037] (3) Pass the obtained steel slag through a mesh sieve, and then carry out leaching and desalination treatment;

[0038] (4) Compound the obtained steel slag with peat and vermiculite ac...

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Abstract

The invention belongs to the technical field of soilless cultivation, and relates to a solid cultivation substrate and a preparation method thereof, in particular to a cultivation substrate produced by utilizing metallurgical waste-steel slag and a preparation method thereof. The steel slag-type soilless culture substrate of the present invention is prepared from the following raw materials in volume ratio: 0.2-0.4 parts of steel slag, 1-2 parts of peat, and 0.6-1 part of perlite and / or 0.6-0.8 part of vermiculite; the steel slag The SiO2 content is not less than 15? wt%, Cd content is not more than 0.30? mg / kg, Cr content is not more than 120? mg / kg, Pb content is not more than 50? mg / kg, Hg content not more than 0.30? mg / kg, As content is not more than 20? mg / kg. The invention solves the problems of low utilization rate of steel slag in my country and the high cost and incomplete nutritional content of existing soilless culture substrates, realizes resource utilization of steel slag, and at the same time scientifically designs and rationally proportions to avoid toxic and side effects of steel slag, bringing Bring huge social, economic and ecological benefits.

Description

technical field [0001] The invention belongs to the technical field of soilless cultivation, and relates to a solid cultivation substrate and a preparation method thereof, in particular to a cultivation substrate produced by utilizing metallurgical waste-steel slag and a preparation method thereof. Background technique [0002] Soilless cultivation has become an important part of facility agriculture, an important form of industrial production of agricultural crops, and a new way to develop efficient agriculture. Soilless cultivation mainly includes substrate cultivation and hydroponics. The main cultivation medium of substrate cultivation is solid substrate. However, in hydroponics, solid cultivation substrate is also used in the seedling raising stage and in fixing and supporting crops during planting. This shows that The use of solid growing media is very common. my country's soilless cultivation started late, but now it is in a period of vigorous development. Since the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/00A01G31/00
CPCY02P60/21
Inventor 梁永超温东旭李兆君宋阿琳范分良
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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