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Method for restoring arbuscular mycorrhizal fungi of vegetative cover in land with discarded iron tailings of grassland ecosystem

An arbuscular mycorrhizal fungus and ecosystem technology, which is applied to the field of vegetation ecological restoration of iron tailings wasteland in grassland ecosystems, can solve the problems of inapplicable vegetation ecological restoration, different phytotoxic effects, differences in vegetation restoration conditions, etc. The effect of ecological restoration is good, the effect of improving the treatment effect, and the effect of reducing the thickness of soil cover

Inactive Publication Date: 2011-10-05
INNER MONGOLIA UNIVERSITY
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  • Summary
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  • Application Information

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Problems solved by technology

However, the type of metal tailings involved in this patent is manganese tailings, which are fundamentally different from iron tailings and have different toxic effects on plants. Therefore, there are also significant differences in the vegetation restoration of different types of metal tailing wastelands; In addition, the plant type used in the vegetation restoration of this patent is arbor, which is not suitable for the vegetation ecological restoration of the iron tailings wasteland in the grassland ecosystem dominated by herbaceous plants

Method used

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Experimental program
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Effect test

Embodiment 1

[0013] The iron tailings sand and covering soil were taken from Baotou Iron Tailings Reservoir, passed through a 2 mm soil sieve and placed in plastic pots (upper diameter 14.5 cm, lower diameter 10.2 cm, height 12.5 cm), and each pot was filled with iron 1000 grams of tailings sand, with a thickness of 7 cm, covered with 350 grams of soil, with a thickness of 3 cm, adding 50 grams of Glomus versiforme (BGC AM0008) bacterial agent, and then covering it with 250 grams of soil, with a thickness of 2 cm, a total of 600 grams of covering soil, the total covering soil thickness is 5 cm, add water to 80% of the field water holding capacity, and let it stand overnight. Plant seeds are soaked in 10% hydrogen peroxide solution for 10 minutes to carry out surface disinfection, and are sown in pots and bowls after germination. After the plants emerge, they are managed according to the management methods of common crops; after one week of growth, each pot is thinned to 12 plants with simi...

Embodiment 2

[0016] Both the iron tailings sand and the covering soil were taken from the iron tailings reservoir area in Baotou. After passing through a 2mm soil sieve, they were placed in plastic pots (the upper diameter was 14.5 cm, the lower diameter was 10.2 cm, and the height was 12.5 cm). 1000 grams of tailings sand, with a thickness of 7 cm, covered with 350 grams of soil, with a thickness of 3 cm, adding 50 grams of Glomus versiforme (BGC AM0008) bacterial agent, and then covering it with 250 grams of soil, with a thickness of 2 cm, a total of 600 grams of covering soil, the total covering soil thickness is 5 cm, add water to 80% of the field water holding capacity, and let it stand overnight. Plant seeds are soaked in 10% hydrogen peroxide solution for 10 minutes to carry out surface disinfection, and are sown in pots and bowls after germination. After the plants emerged, they were managed according to the management methods of common crops; after one week of growth, corn, sorghu...

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Abstract

The invention discloses a method for restoring arbuscular mycorrhizal fungi of a vegetative cover in a land with discarded iron tailings of a grassland ecosystem, and relates to the technical field of ecological restoration of vegetative covers in a land with discarded metal tailings. The method for restoring arbuscular mycorrhizal fungi comprises the following steps of: (1) covering earth on iron tailings for 3 to 7 centimeters deep; (2) inoculating arbuscular mycorrhizal fungicides such as Glomus versiforme and the like at the place 0 to 3 centimeters far from the earth; (3) planting plants such as Elymus dahuricus Turcz and the like, harvesting the plants after 60-day to 120-day growth, using the plants which meet a relevant standard as feed, and centralizedly burning and landfilling the plants which do not meet the relevant standard. The method for restoring the arbuscular mycorrhizal fungi has the following advantages that: the adopted arbuscular mycorrhizal fungi symbiose with herbs easily so that the absorption and utilization of nitrogen, phosphorus and potassium are promoted, the absorption or transferring of heavy metals is reduced, the thickness of covering earth is reduced, the growth situation of plants is improved, the planting and growth of plants in iron tailings covered with earth are promoted, the method for restoring the arbuscular mycorrhizal fungi has high success rate of revegetation, simple process and lower cost, and is applicable to management of lands with discarded iron tailings of grassland ecosystems.

Description

technical field [0001] The invention relates to the vegetation ecological restoration of the degraded ecological system of metal tailings abandoned land, in particular to a method for using arbuscular mycorrhizal fungi to restore the vegetation ecological system of iron tailings abandoned land of grassland ecosystem. Background technique [0002] my country has a vast territory and a complete range of mineral resources and abundant reserves. The reserves of various metal minerals such as iron ore, manganese ore, titanium ore, copper ore, lead ore, and zinc ore are among the top in the world. However, while large-scale industrial mining brings huge economic benefits, it almost inevitably leads to serious ecological and environmental problems, that is, a large area of ​​mining wasteland is generated. Among them, the problem caused by abandoned tailings is the most serious. According to the statistics of relevant departments, the amount of tailings produced in my country can a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02
Inventor 郭伟杨慧娟赵仁鑫包玉英赵吉王立新张君
Owner INNER MONGOLIA UNIVERSITY
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