Method of using slash pine containerized seedlings to directly renovate metallic mineral waste yard

Abstract

A method of using slash pine containerized seedlings to directly renovate a metallic mineral waste yard comprises: (1), germinating slash pine seeds in seedling pots; (2) managing plantlets; (3) transplanting to degradable nonwoven container bags; (4) managing containerized seedlings; (5) preparing a mine mineral waste slope; (6) transplanting. The survival rate of slash pine seedlings grown with slash pine containerized seedling is high, the slash pine seedlings may be transplanted to the mine mineral waste yard to ecologically renovate the waste mine, the need of slash pine seedlings for growth nutrition can be met, the survival rate of slash pine in mineral waste is also increased, and site basis is provided for improving soil matrix of mine mineral waste yard in later stage and field planting of other renovating plants; the method of using slash pine containerized seedlings to directly renovate the metallic mineral waste yard provides a solution to the need of slash pine for growing on mine mineral waste sites.

Description

technical field [0001] The invention relates to a method for directly repairing metal waste slag stockpile by utilizing slash pine container seedlings, belonging to the technical field of environmental protection. Background technique [0002] my country is a country with a large amount of mineral resources. With the development of mineral resources, the amount of solid waste with the largest discharge of "three wastes" in mining areas has also increased, which not only occupies and destroys a large amount of land resources, but also brings huge environmental safety hazards. Although a large amount of research on the recycling and reuse of waste ore resources has been carried out, due to the influence of economic conditions, technical equipment and market changes, the utilization rate of waste slag in my country, especially low-grade waste ore, has been low, so a large number of slag piles The field is still in urgent need of ecological restoration. How to manage the waste s...

AI Technical Summary

Problems solved by technology

The waste rock dump lacks the normal soil structure required for plant growth and survival. The ore has good ventilation and water permeability, poor water and fertilizer retention capacity, drastic changes in soil temperature, high heavy metal content, strong acidic soil, and low pH. To about 2-3, only sporadic herbaceous plants settled, the natural recovery state of vegetation is extremely poor, and the cycle is too long to meet the requirements of ecological restoration

At present, a large number of soil restoration projects are used, with a large amount of engineering, high cost of foreign soil, and low plant survival rate, especially in waste slag slopes, where soil erosion is serious and the restoration effect is poor.

At present, for the restoration of waste slag accumulation slopes in mining areas, direct hanging net weeding technology, hydraulic spraying, guest soil spraying method, spraying mixed planting technology, three-dimensional vegetation net technology, etc. are mainly used, but these methods also have a large amount of engineering and high cost. , the lack of a reasonable mix of trees, shrubs and grasses, the types of plants sprayed are limited, the long-term effect is poor, and the herb degrades quickly, etc.