Clay soil for bare rock slope vegetation restoration

A technology for vegetation restoration and clayey soil, applied in the field of clayey soil, can solve the problems of unsatisfactory soil adsorption capacity and buffering performance, poor fertilizer retention, poor fertility, adhesion, and poor hygroscopicity, etc., and achieve strong cation exchange performance , Strong charge performance, and the effect of improving adhesion

Active Publication Date: 2012-10-10
青岛冠中生态股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The preparation of this "customer soil layer" requires the use of soil. Most of the soil used in many domestic spraying technologies is ordinary planting soil with added organic matter. There are many shortcomings in the properties and parameters of this planting soil. Weed seeds, insect eggs, germs; poor adhesion and moisture absorption; poor fertilizer retention and fertilizer enhancement; soil adsorption and buffering properties are not ideal, etc., especially on bare rock slopes with extremely harsh site conditions , Nutrients are easily lost, and it is difficult to provide nutritional support for the plant community for a long time

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] The material ratio is as follows: deep yellow soil clay: 440L;

[0014] Najibentonite: 40L;

[0015] Quicklime: 25L;

[0016] Select the yellow soil clay below 50cm from the ground surface, dry the clay, crush it, and sieve it. The aperture of the sieve is 8mm. The relevant indicators of the processed deep yellow soil clay are:

[0017] Content (volume ratio) of cohesive soil particles: 73%; Cohesive soil particles here refer to soil particles with a diameter less than 10 microns;

[0018] The content (volume ratio) of soil colloid: 48%; The soil colloid here refers to the soil particles whose diameter is distributed between 1 and 200 nanometers;

[0019] Specific surface area of ​​soil colloid: 250~300m 2 ;

[0020] Cation exchange capacity (CEC): 21me / 100g;

[0021] Electrical conductivity (EC): 1.76ms / cm.

[0022] The bentonite is sodium-based bentonite with a cation exchange capacity (CEC) of 86me / 100g to ensure its good adsorption performance, and the specif...

Embodiment 2

[0028] The material ratio is as follows: deep red soil clay: 0.85m 3 ;

[0029] Calcium bentonite: 0.09m 3 ;

[0030] Quicklime: 0.055m 3 ;

[0031] The deep mineral soil is the red soil mineral clay below 50cm from the ground surface, and the clay is dried and then crushed and sieved with a sieve mesh diameter of 10mm. The indicators of processed red soil clay are as follows:

[0032] Content (volume ratio) of cohesive soil particles: 68%; Cohesive soil particles here refer to soil particles with a diameter less than 10 microns;

[0033] Soil colloid content (volume ratio): ≥35%; soil colloid here refers to soil particles whose diameter is distributed between 1 and 200 nanometers;

[0034] Specific surface area of ​​soil colloid: 200~260m 2 ;

[0035] Cation exchange capacity (CEC): 18me / 100g;

[0036] Conductivity (EC): 2.2ms / cm.

[0037] The bentonite is calcium-based soil with a cation exchange capacity (CEC) of 90me / 100g and a specification of 200 mesh.

[0038...

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Abstract

The invention discloses clay soil for bare rock slope vegetation restoration, which is characterized by comprising the following compositions in percentage by volume ratio: 80-95 percent of deep mineral soil, 8-10 percent of bentonite and 4-7 percent of quick lime. The clay soil has the advantages of rich colloid content, large specific surface area, strong charge character, strong cation exchange performance and excellent adsorption ability, can enhance the adhesiveness, the hydroscopicity and the buffer capacity of the soil, is beneficial to formation of water stability aggregates and improving the soil structure, and provides favorable guarantee for growth of slope plants.

Description

Technical field: [0001] The invention relates to a kind of clayey soil, which is specially used for vegetation recovery on exposed rock slopes, and can be widely used in fields such as agricultural planting, water and soil conservation, mine regreening, land greening, traffic engineering, and municipal construction. Background technique: [0002] At present, most of the slope regreening work for the purpose of vegetation restoration at home and abroad is to spray the mixed related materials (such as planting soil, fertilizer, organic matter, water retaining agent, adhesive, plant seeds, etc.) Create a layer of soil on a rocky or earthy slope and expect plants to sprout and grow in it. [0003] The preparation of this "customer soil layer" requires the use of soil. Most of the soil used in many domestic spraying technologies is ordinary planting soil with added organic matter. There are many shortcomings in the properties and parameters of this planting soil. Weed seeds, ins...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): A01G31/00
Inventor李春林许剑平吴刚荆朋太孟凡彬
Owner青岛冠中生态股份有限公司