Fertilizing method for rapidly improving fertility of mine reclaimed soil

A technology of soil fertility and fertilization method, applied in the direction of fertilization method, fertilization device, application, etc., can solve the problems of not considering the spatial variability and not fully considering the spatial difference of surface soil fertility, etc., to overcome the poor physical structure of soil, Improve the physical properties of soil and quickly fertilize the soil

Inactive Publication Date: 2015-05-13
INST OF AGRI ENVIRONMENT & RESOURCE SHANXI ACAD OF AGRI SCI
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  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned patents adopted various fertilization measures, but did not fully consider the spatial variability of surface soil fertility, and did not consider spatial variability in soil sample collection and fertilization recommendations, and there are certain deficiencies

Method used

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Examples

Experimental program
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specific Embodiment 1

[0028] A fertilization method for rapidly improving the fertility of reclaimed soil in a mining area, comprising the following steps:

[0029] (1) Use a laser leveling instrument to level the land after project reclamation;

[0030] (2), adopt grid multi-point sampling method to carry out the collection of soil sample, sampling depth is 0.5cm;

[0031] (3), basic nutrient determination: carry out the determination of soil organic matter, total nitrogen, available phosphorus, available potassium and trace elements to the soil sample collected in step (2);

[0032] (4), division of fertility grades: according to the soil organic matter measurement results of the soil samples of each grid, the electronic map of the regional soil organic matter content is made, and the soil is classified according to the classification index of the soil organic matter and the regional grade distribution map is made;

[0033] (5), according to the classification situation of soil organic matter in...

specific Embodiment 2

[0041] Roughly the same as the specific embodiment 1, the only difference is:

[0042] In step (2), adopt grid (grid size is 50m * 50m) multipoint sampling method to carry out the collection of soil sample, sampling depth is 20cm;

[0043] In the step (7), select the mixed sowing of the pea seeds and the alfalfa seeds, and dress the seeds with rhizobia, and the rhizobia consumption is 20% of the total mass of the seeds. Seed dressing with rhizobia, the dosage of rhizobia is 1kg / mu, and the arrow tongue pea seeds and alfalfa seeds grow to the maximum biomass at the full flowering stage or after picking their edible parts, they are plowed and pressed back to the field.

specific Embodiment 3

[0044] Roughly the same as specific embodiment 1, the difference only lies in:

[0045] In step (2), adopt grid (grid size is 25m * 25m) multipoint sampling method to carry out the collection of soil sample, sampling depth is 10cm;

[0046] In the step (7), the seeds of vetch and alfalfa are selected for mixed sowing, and the seeds of vetch and alfalfa are seed-dressed with rhizobia. The amount of rhizobia is 18% of the total mass of seeds. Before sowing, the seeds of vetch, alfalfa and the corresponding rhizobium agent For seed dressing, the dosage of rhizobia agent is 0.8kg / mu, and the seeds of vetch and alfalfa grow to the maximum biomass at the full flowering stage or after picking their edible parts, they are plowed and pressed back to the field.

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Abstract

The invention relates to a fertilizing method for rapidly improving fertility of mine reclaimed soil. The fertilizing method comprises the following steps: 1. flattening earth; 2. collecting a soil sample; 3. determining basic nutrients; 4. dividing fertility grades; 5. applying zoning of organic fertilizer according to the grading situation of soil organic matters; 6. application of inorganic fertilizer in spring: applying 10-20kg of N, 5-20kg of P2O5 and 5-15kg of K2O elemental fertilizer or comparable-nutrient compound fertilizer according to the nutrient demand rule of plants and the testing results of soil basic nutrients; and 7. applying green manure dressing. The fertilizing method has the following beneficial effects that: 1. the defect that the large nutrient space variation of the mine reclaimed soil is large can be overcome, and the rapid and uniform fertilizing effect can be achieved; 2. an organic fertilizer and ferric suflite and humic acid are fully mixed and applied into soil, so that the physical character of the soil can be effectively improved; and 3. organic, inorganic and biophase are combined, quick-acting and sustained-acting effects are combined, thus being complementary in each advantages, and achieving the effect of rapidly fertilizing the soil.

Description

technical field [0001] The invention belongs to the technical field of land reclamation in mining areas, and in particular relates to a fertilization method for rapidly improving the soil fertility of reclamation soil in mining areas. Background technique [0002] my country's coal mining subsidence land area is 9.5 million mu, gangue hill covers an area of ​​1 million mu, and open-pit mining damages 11.25 million mu of land. ("China Land and Resources News" 2007.7.27, version 1). Regardless of whether it is a subsidence area or an open-pit mine that excavates the land, in the process of reclamation, land filling, leveling, and soil covering are generally required. The soil after reclamation completely loses the basic characteristics of the original farmland, and most of the surface soil is organic. Therefore, the reclaimed soil has the characteristics of poor soil physical properties, poor nutrients, poor biological activity, and large spatial variation of nutrients, resul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C21/00
Inventor 张强郜春花卢朝东靳东升李建华董云中卢晋晶
Owner INST OF AGRI ENVIRONMENT & RESOURCE SHANXI ACAD OF AGRI SCI
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