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Alkaline organic fertilizer for restoring soil polluted by heavy metals and preparation method of alkaline organic fertilizer

A technology for remediating soil and heavy metals, applied in the preparation of organic fertilizers, organic fertilizers, alkaline orthophosphate fertilizers, etc., can solve problems such as the decline in the yield and quality of agricultural products, restricting the sustainable development of agriculture, and excessive heavy metal residues. Reduced bioavailability, reduced effectiveness, effect of large specific surface area

Inactive Publication Date: 2017-12-15
HUNAN ZHONGKE AGRI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the main metals of heavy metal pollutants are cadmium, mercury, arsenic, copper, lead, chromium, zinc, and nickel; they seriously pollute agricultural land and agricultural products, resulting in excessive heavy metal residues in agricultural products in these places, which seriously threatens human health. and lead to soil compaction, decline in soil fertility, rampant pests and diseases, and decline in the yield and quality of agricultural products in these places, which seriously restricts the sustainable development of agriculture in our country.

Method used

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  • Alkaline organic fertilizer for restoring soil polluted by heavy metals and preparation method of alkaline organic fertilizer
  • Alkaline organic fertilizer for restoring soil polluted by heavy metals and preparation method of alkaline organic fertilizer
  • Alkaline organic fertilizer for restoring soil polluted by heavy metals and preparation method of alkaline organic fertilizer

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] The basic organic fertilizer for repairing soil heavy metal pollution of the present embodiment, its preparation process is as follows:

[0047] ⑴, material preparation: get 1 part by weight of urea, 3 parts of potassium sulfate, 2 parts of diammonium phosphate, 10 parts of tobacco straw, alkaline ash (6 parts by weight of calcium oxide mixed with 1 part by weight of magnesium oxide) 40 parts, 35 parts of poultry manure, 30 parts of bean straw, 30 parts of purple soil, 1 part of trace elements (mixed with equal parts of iron, manganese and silicon), 1.5 parts of biological bacteria, 3 parts of lime nitrogen, root nodules 0.02 part of bacterial agent (soybean rhizobia agent, peanut rhizobia agent and forage rhizobia agent mixed by equal weight) are set aside;

[0048] ⑵, raw material pretreatment:

[0049] 1. Pulverization: pulverize the tobacco straw, bean straw and purple soil respectively into tobacco straw powder, bean straw powder and purple soil powder below 100 m...

Embodiment 2

[0053] The basic organic fertilizer for repairing soil heavy metal pollution of the present embodiment, its preparation process is as follows:

[0054] ⑴, material preparation: get 3 parts by weight of urea, 1 part of potassium sulfate, 6 parts of diammonium phosphate, 30 parts of tobacco straw, alkaline ash (6 parts of calcium oxide mixed with 1 part of magnesium oxide) 30 parts, 15 parts of poultry manure, 10 parts of bean straw, 10 parts of purple soil, 3 parts of trace elements (mixed with equal parts of iron, manganese and silicon), 0.5 parts of biological bacteria, 5 parts of lime nitrogen, root nodules Bacteria agent (soybean rhizobia agent, peanut rhizobia agent and forage rhizobia agent mixed by equal weight) 0.04 part, standby;

[0055] ⑵, raw material pretreatment:

[0056] 1. Pulverization: pulverize the tobacco straw, bean straw and purple soil respectively into tobacco straw powder, bean straw powder and purple soil powder below 100 mesh, and set aside;

[0057...

Embodiment 3

[0060] The basic organic fertilizer for repairing soil heavy metal pollution of the present embodiment, its preparation process is as follows:

[0061] ⑴, material preparation: get 2 parts by weight of urea, 2 parts of potassium sulfate, 4 parts of diammonium phosphate, 20 parts of tobacco straw, alkaline ash (6 parts of calcium oxide mixed with 1 part of magnesium oxide by weight) 35 parts, 25 parts of poultry manure, 20 parts of bean straw, 20 parts of purple soil, 2 parts of trace elements (mixed with equal parts of iron, manganese and silicon), 1 part of biological bacteria, 4 parts of lime nitrogen, root nodules Bacteria agent (soybean rhizobia agent, peanut rhizobia agent and forage rhizobia agent mixed by equal weight) 0.03 part, standby;

[0062] ⑵, raw material pretreatment:

[0063] 1. Pulverization: pulverize the tobacco straw, bean straw and purple soil respectively into tobacco straw powder, bean straw powder and purple soil powder below 100 mesh, and set aside; ...

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Abstract

The invention discloses an alkaline organic fertilizer for restoring soil polluted by heavy metals and a preparation method of the alkaline organic fertilizer, and relates to the technical field of agricultural fertilizers. The alkaline organic fertilizer is prepared from, by weight, 1-3 parts of urea, 1-3 parts of potassium sulphate, 2-6 parts of diammonium phosphate, 10-30 parts of tobacco straw, 30-40 parts of alkaline ash, 15-35 parts of livestock manure, 10-30 parts of bean stalks, 10-30 parts of purple soil, 1-3 parts of microelements, 0.5-1.5 parts of biological bacteria, 3-5 parts of lime nitrogen and 0.02-0.04 part of nitragin. The alkaline organic fertilizer has a good restoring effect on the soil polluted by the heavy metals, is suitable for being used in acidic soil, can be used for farmland soil heavy metal pollution restoration and ecological improvement in southern paddy fields in China, and can also be used for dry farmland soil heavy metal pollution restoration and ecological improvement in the south.

Description

technical field [0001] The invention relates to the technical field of agricultural fertilizers, in particular to an alkaline organic fertilizer for repairing soil heavy metal pollution and a preparation method thereof. Background technique [0002] At present, my country's soil is seriously polluted by heavy metals. In April 2014, the Ministry of Environmental Protection and the Ministry of Land and Resources jointly issued the first national survey report on soil pollution: the overall situation of the national soil environment is not optimistic, the soil pollution is serious in some areas, and the quality of the cultivated land soil environment is worrying. . Among the soils of different land use types, the point exceeding standard rate of cultivated land soil was the highest, which was 19.4%. Among them, the main metals of heavy metal pollutants are cadmium, mercury, arsenic, copper, lead, chromium, zinc, and nickel; they seriously pollute agricultural land and agricultu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/04C05F17/00C05G3/80
CPCC05B7/00C05F17/00C05G3/80C05C9/00C05C11/00C05D1/02C05D3/02C05D5/00C05D9/00C05D9/02C05F3/00C05F11/00C05F11/08Y02W30/40
Inventor 文贻荣黄生博
Owner HUNAN ZHONGKE AGRI
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