Iron tailing pond greening afforestation method

Abstract

The invention relates to an iron tailing pond greening afforestation method. In the method, field soil, turf, decomposed chicken manure, three-nutrient composite fertilizer, water-retaining agent and rooting agent are mixed according to a certain proportion and then filled into a nursery pot; then mulberry seedlings and sea-buckthorn seedlings are transplanted to the nursery pot and cultured for two to three months; then the nursery pot is transplanted into a pit formed in a dam body surface; two lines of mulberry seedlings and four lines of sea-buckthorn seedlings are crossed-planted; alfalfa is planted between pits; water and seeds are regularly supplied; fertilizers are dressed in spring and summer; and the mulberry seedlings and the sea-buckthorn seedlings are trimmed in the next spring and afforestation can be finished. By the use of the method, soil use amount can be greatly reduced and high survival rate of mulberry trees and sea-buckthorn trees can be achieved; and the roots extend into the tailing sand, so great sand solidification effect can be achieved.

Description

Technical field [0001] The invention belongs to the technical field of iron tailings treatment, in particular to an iron tailing pond greening and afforestation method. Background technique [0002] Tailings are waste after beneficiation and are the main component of industrial solid waste. A large number of tailings can only be kept in the tailing pond for a long time. It not only occupies a large amount of agricultural and forest land, but also maintains and repairs the tailing pond. Need to consume a lot of funds, as the number of tailings continues to increase, it causes serious damage to the surrounding vegetation, water quality and other ecological environment. In order to ensure the safe operation of tailings ponds, the tailings dams are generally piled up with coarse tailings sand. When the tailings pond rises, the tailings dams are piled up in stages. However, due to the loose nature of the tailings sand, it is easy to produce Tailings sand raises dust, and even dust st...

AI Technical Summary

Problems solved by technology

In order to ensure the safe operation of tailings ponds, tailings pond dams are generally built with thick tailings sand. When the tailings pond rises, the tailings pond dams are piled up step by step. However, due to the loose characteristics of tailings sand, it is easy to produce Dust from the tailings sand, and even a dust storm in severe cases, these tailings sand will move outward with the wind and accumulate on the dam body, which will cause floods in the dam body during the rainy season, and even cause serious accidents in the dam body bursting

At present, it is more common to cover the slope with soil, and then plant plants on the surface of the soil layer to restore the ecology. Drought-tolerant and sand-fixing plants can also be planted on the tailings sand. The first method requires the use of a large amount of foreign soil, which will affect the excavated land. environment, the second choice of tree species is not well matched, and the effect of sand fixation is average