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The method of planting grass in rare earth tailings and the comprehensive treatment method of rare earth tailings

A technology of rare earth tailings and pasture, applied in the field of resources and environment, can solve the problems of unrepaired soil, soil acidification, few repair measures, etc., to improve plant survival rate and growth rate, increase organic matter content, and increase fertilization depth Effect

Active Publication Date: 2022-05-03
赣州市畜牧研究所
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Rare earth is known as industrial "gold" and is an important strategic resource. However, due to the backwardness of rare earth mining technology in the past, there are a large number of rare earth tailings, and the organic matter in the soil of rare earth tailings is missing and the soil is acidified. Serious, so that the plants can not grow, and further lead to a large amount of tailings, serious soil erosion, and the method of directly planting specific plants in the prior art, there are slow growth of plants leading to death, and the soil has not been repaired
Therefore, the restoration of rare earth tailings is currently very difficult, and there are few effective restoration measures

Method used

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  • The method of planting grass in rare earth tailings and the comprehensive treatment method of rare earth tailings
  • The method of planting grass in rare earth tailings and the comprehensive treatment method of rare earth tailings
  • The method of planting grass in rare earth tailings and the comprehensive treatment method of rare earth tailings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Step 1. Collect cow dung. Collect cow dung from the cattle farm, control the drinking water and rainwater for beef cattle breeding not to enter the cow dung, and the cow urine enters the biogas digester for fermentation to obtain biogas slurry.

[0042] Step 2, preparing cow dung-based bed bait. Place the above-mentioned cow dung in a fermentation tank, add vermicompost and navel orange dregs to ferment for 4.5 days, the mass ratio of cow dung, vermicompost and navel orange dregs is 100:12.5:7.5, and ferment to obtain cow dung for cultivating earthworms Bed bait.

[0043] Step 3, preparing vermicompost. The above-mentioned cow dung-based bed bait is placed in strips on the ground with good drainage and shade to obtain a cultured base bed for cultivating earthworms. The length of the cultured base bed is controlled to be 4m, the width is 0.25m, and the height is 0.25m. Add 13.5kg of earthworms in the culture bed, water the culture bed every day, keep its humidity at a...

Embodiment 2

[0048] The differences between this embodiment and Implementation 1 are as follows:

[0049] In step 2, the mass ratio of cow dung, vermicompost and navel orange residue is 100:13.5:8.5, and fermented for 4 days to obtain cow dung-based bed bait.

[0050] In the step 3, the length of the earthworm breeding base bed is controlled to be 4.6m, the width is 0.28m, and the height is 0.26m, and 14.2kg of earthworms are added in the culture base bed, and the culture base bed is watered every day to keep its humidity at 53%. About 22 days for breeding;

[0051] In step 4, in the rare earth tailings area (115° 58' east diameter, 26° 39' north latitude, 1200-1250 meters above sea level), each horizontal field is ditched with a width of 32cm; others are the same as in the first embodiment.

[0052] In step 6, annual ryegrass is sown in the first year, with a sowing area of ​​0.64 kg per mu; in the second year, perennial ryegrass is interplanted, with a sowing area of ​​0.63 kg per mu; t...

Embodiment 3

[0054] The differences between this embodiment and Implementation 1 are as follows:

[0055] In step 2, the mass ratio of cow dung, vermicompost and navel orange residue is 100:15:10, and fermented for 3 days to obtain cow dung-based bed bait.

[0056] In the step 3, the length of the earthworm breeding base bed is controlled to be 5m, the width is 0.3m, and the height is 0.3m, and 15kg of earthworms are added in the culture base bed, and the culture base bed is watered every day to keep its humidity at about 53%. Breeding for 25 days;

[0057]In step 4, in the rare earth tailings area (116° 38' east diameter, 26° 29' north latitude, 1100-1120 meters above sea level), each horizontal field is ditched with a width of 35 cm; others are the same as in Embodiment 1.

[0058] In the first year in step 6, annual ryegrass is sown and planted, with a sown area of ​​0.7 kg per mu; in the second year, perennial ryegrass is interplanted with a sown area of ​​0.75 kg per mu; others are t...

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Abstract

The invention discloses a method for planting forage grass in rare earth tailings and a comprehensive treatment method for rare earth tailings. In the rare earth tailings area, vermicompost is used as base fertilizer to plant royal bamboo grass and ryegrass, which can be in the form of Multiple rows are planted alternately at intervals. Establish a cattle farm in the rare earth tailings area, and use emperor bamboo grass and rye grass to prepare feed to feed cattle. Earthworms are raised with cow dung to obtain vermicompost, and cow urine is fermented to obtain biogas slurry, and then the vermicompost and biogas slurry are used to plant and irrigate emperor bamboo grass and ryegrass respectively. The above method can make full use of the rare earth tailings area to raise cattle and solve the environmental problem of cow manure pollution; it can also make full use of cow manure to increase the organic matter content of rare earth tailings soil, and use vermicompost to be alkaline and rich in various beneficial microorganisms , active ingredients, enzymes and the characteristics of various nutrients, neutralize the acidity of rare earth tailings, improve the survival rate and growth rate of plants, and solve the problem of the source of organic fertilizer in the treatment of rare earth tailings.

Description

technical field [0001] The invention relates to the technical field of resources and environment, in particular to a method for planting grass in rare earth tailings and a comprehensive treatment method for rare earth tailings. Background technique [0002] Rare earth is known as industrial "gold" and is an important strategic resource. However, due to the backwardness of rare earth mining technology in the past, there are a large number of rare earth tailings, and the organic matter in the soil of rare earth tailings is missing and the soil is acidified. Seriously, so that the plants cannot grow, which further leads to a large amount of tailings and serious soil erosion. However, in the prior art, the method of directly planting specific plants has slow growth and death of the plants, and the soil has not been repaired. Therefore, the restoration of rare earth tailings is very difficult at present, and there are few effective restoration measures. [0003] Grass is a key f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/00
CPCA01G22/00
Inventor 雷小文陈荣强钟云平李建明邱静芸
Owner 赣州市畜牧研究所
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