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Method for rapidly repairing south metal tailing sand reservoir by using lespedeza container seedlings

A technology of sage and container seedlings, applied in botany equipment and methods, applications, horticulture, etc., can solve the problems of destroying the ground surface and vegetation, and high repair costs, so as to improve the ability of temperature control and water retention, increase the survival rate, and improve tailings The effect of soil properties

Active Publication Date: 2017-08-18
INST OF BIOLOGICAL RESOURCES JIANGXI ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the restoration cost of the foreign soil reclamation method is relatively high, and it...

Method used

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  • Method for rapidly repairing south metal tailing sand reservoir by using lespedeza container seedlings
  • Method for rapidly repairing south metal tailing sand reservoir by using lespedeza container seedlings

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Embodiment Construction

[0013] The present invention is specifically implemented in the tailings of Dexing Copper Mine.

[0014] Analyze the physical and chemical properties, nutritional characteristics and heavy metal content of tailings in Dexing Copper Mine. The test results show that the tailings of Dexing Copper Mine are neutral or slightly alkaline (pH 7.02-7.24), with a bulk density of 1.28g / cm 3 , the total void is 52%, there is no gravel larger than 5mm in the whole section, and the substitution volume is less than 7 m.e / 100g soil, which indicates that the exchange volume of the indicator adsorption and maintenance of cationic nutrient quantity is small, and the fertilizer retention capacity is small. Its total phosphorus content is similar to that of nearby red soil with good vegetation coverage, but the available phosphorus content that can be directly absorbed by plants is extremely low, and the organic matter and total nitrogen content are also extremely low. The heavy metal content...

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Abstract

The invention discloses a method for rapidly repairing a south metal tailing sand reservoir by using lespedeza container seedlings. The method comprises the following steps: (1) drying lespedeza seeds collected in the diggings, cultivating the seedlings in a greenhouse in the first and middle ten-day of March; (2) while the seedlings are grown to 12-15 cm, transplanting the seedlings to a new non-woven fabric container, and adjusting a soil matrix according to the tailing sand soil fertility feature and the moisture and fertilizer retention capability; (3) selecting the strong lespedeza non-woven fabric container seedlings with a developed root system in the middle and last ten-day of May, transplanting by using a method that the planting is carried out while the hole is digged, and digging the hole and planting according to 1 m X 1m of the line spacing; (4) after planting the lespedeza, uniformly stirring the soaked grass seeds of grass family and a calcium magnesium phosphate fertilizer of nitrogen and phosphorus, and broadcast-sowing between the rows; and (5) dressing a nitrogen fertilizer in 4 mg/mu every year. After two years of a curing period, the lespedeza is grown well, the tailing sand is covered by dead leaves, and trees and shrubs suitable for the tailing sand site conditions can be planted, so the metal tailing sand reservoir is repaired by planting the repair plants. The method is suitable for repairing the south uncovered metal tailing sand reservoir.

Description

technical field [0001] The invention relates to a method for quickly repairing southern metal tailings reservoirs by using container seedlings of edulis euphratica, belonging to the technical field of ecology and environmental protection. Background technique [0002] my country is rich in mineral resources. During the mining process, a large amount of solid waste such as tailings and waste rocks is produced. The abandoned tailings reservoir is the most common and most difficult mining wasteland in metal mines. Mine tailings abandoned soil has poor soil structure, lack of organic matter content and plant essential nutrients (especially nitrogen, phosphorus, potassium), and high heavy metal content, which seriously limits plant growth, reproduction and settlement, and makes vegetation recovery difficult. At present, the environmental protection measures in the mining area are to build a dam to retain the tailings and control the discharge of the tailings, but the tailings acc...

Claims

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Application Information

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IPC IPC(8): A01G17/00A01G1/00
CPCA01G17/005
Inventor 孙小艳吴照祥李彦强谭胤静胡淼
Owner INST OF BIOLOGICAL RESOURCES JIANGXI ACAD OF SCI
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