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A technology for coal mines and land, applied in the field of afforestation on large-scale abandoned coal mines, can solve problems such as low survival rate of afforestation, and achieve the effects of low soil foundation conditions, short canopy closure time, and large numbers
Inactive Publication Date: 2018-04-06
PINGXIANG INST OF FORESTRY SCI
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[0003] In view of the low survival rate of afforestation in the abandoned coal mines formed by gangue, coal slag, slag, etc. in the above-mentioned prior art, the present invention proposes a plant that is easy to take root from cuttings, drough
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Embodiment 1
[0039] Embodiment 1 illustrates the steps of the method. Taking Hujia Village, Xiabu Town, Xiangdong District, Pingxiang City, Jiangxi Province, the greening of abandoned coal mines formed by gangue, coal slag, slag, etc. as an example.
[0040]1. Selection of tree species, tree species: viburnum, paulownia, black locust; shrub species: amorpha, euphratica;
[0041] 2. The area is 320 mu;
[0042] 3. Site preparation method: if the slope is less than 20°, dig piles and fill holes, and level; if the slope is greater than 20°, dig piles and fill holes, and level the ground;
[0043] 4. Afforestation methods: digging holes and ditching, planting seedlings and burying dry methods;
[0045] 6. Survival rate investigation: Due to the method of planting seedlings and burying dry forests, the survival rate cannot be investigated according to ...
Embodiment 2
[0048] Embodiment 2 illustrates the steps of the method, taking the greening of abandoned coal mines formed by gangue, coal slag, slag, etc. as an example in Pinghu Village, Shangtang Town, Fengcheng City, Jiangxi Province.
[0049] 1. Selection of tree species, tree species: Paulownia, Robinia; shrub species: Amorpha, Photinia;
[0050] 2. The area is 155 mu;
[0051] 3. Site preparation method: if the slope is less than 20°, dig piles and fill holes, and level; if the slope is greater than 20°, dig piles and fill holes, and level the ground;
[0052] 4. Afforestation methods: digging holes and ditching, planting seedlings and burying dry methods;
[0053] 5. Afforestation density: Paulownia and Robinia 2.5×2.5m, 110 plants per mu; Amorpha and Photinia 1.5×1.5m, 296 plants / mu;
[0054] 6. Survival rate investigation: the number of sprouts per plant, the average number of sprouts is calculated; roots and stems are all dry and no sprouts are counted as dead; the growth and de...
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Abstract
The invention discloses a forestation method for a waste coal mine field. The method comprises the steps that landfill pits are dug on the waste coal mine field, the land is leveled, the terrain slopeof a waste coal mine is larger than 15 degrees, and a drainage ditch is formed in the slope direction; in the mountain slope direction from top to bottom, in December of the current year to March ofthe next year, the forestation density is designed according to different tree varieties, planting holes are dug, and planting ditches are dug; treetops of robinia pseudoacacia, paulownia, amorpha fruticose and lespedeza bicolor tree variety nursery stocks which are easy to root in cutting, resistant to drought and resistant to barren are cut out, seedling roots are planted in the planting holes,seeding stems are planted in the planting ditches respectively, the nursery stocks are horizontally buried in the planting ditches and planting holes, and then mine slag and coal slag cover the nursery stocks. The forestation method for the waste coal mine field has the advantages that buds sprout from tree trunks, fasciculate plants gradually generate, the survival rate of forestation on barren mountain slopes such as waste rock, coal slag and mine slag can be increased, the requirement to the soil matrix condition is low, and nursing and management are facilitated; a soil dressing mode is not adopted, trees are directly planted on the mine slag field, and the forestation cost is low.
Description
technical field [0001] The invention relates to an afforestation method on the ground of a large-area abandoned coal mine formed after coal mining. Background technique [0002] For a long time, due to human activities such as coal mining, the forest land has been destroyed, resulting in a large amount of gangue, slag, etc. directly piled up in the mining area, forming a large area of barren hills and slopes. If these abandoned coal mines formed by gangue and slag are not comprehensively treated in a timely manner, the water and soil balance will be seriously damaged, resulting in serious water and soil loss, heavy metal pollution, and adverse effects on the environment. At present, no effective method has been found in the country that carries out greening management in these abandoned coal mines. Or the high-cost alien soil cultivation, or the mud-covered greening with grass seeds, it is difficult to form a forest in a short time. In view of the increasingly prominent ...
Claims
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Application Information
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