Multiple-effect compound fertilizer and preparing method and application thereof

A compound fertilizer and nitrogen fertilizer technology, applied in the field of contaminated soil remediation, can solve problems such as unsatisfactory remediation effect, achieve good heavy metal remediation stability and environmental friendliness, easy to promote in large areas, and reduce cadmium content

Inactive Publication Date: 2015-11-11
江西省山江湖开发治理委员会办公室
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is that after the soil conditioner in the prior art is applied to cadmium-contaminated soil, the remediation effect is not ideal, and the cadmium content in the crops is still high, so a method with good soil remediation effect and can effectively reduce the Multi-effect compound fertilizer for repairing cadmium-contaminated soil with cadmium content in crops

Method used

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  • Multiple-effect compound fertilizer and preparing method and application thereof
  • Multiple-effect compound fertilizer and preparing method and application thereof
  • Multiple-effect compound fertilizer and preparing method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] The present embodiment provides a multi-effect compound fertilizer for repairing cadmium-contaminated soil, and its raw material composition includes:

[0037] Urea, 10 parts by weight;

[0038] Monoammonium phosphate, 60 parts by weight;

[0039] Potassium chloride, 10 parts by weight;

[0040] Agricultural rare earth nitrate, 2 parts by weight;

[0041] Synthetic methanol catalyst waste agent, 2 parts by weight;

[0042] The mixture of Sophora flavescens, Beetroot, Xiaotongcao and Guanzhong according to the mass ratio of 1:1:1:1, 2 parts by weight;

[0043] Humic acid mineral powder, 55 parts by weight;

[0044] Sepiolite, 15 parts by weight;

[0045] Plant ash, 11 parts by weight;

[0046] Kaolin, 0.5 parts by weight;

[0047] Zeolite, 1.2 parts by weight.

[0048] The particle size of the agricultural rare earth nitrate is 10 meshes, the particle size of the synthetic methanol catalyst waste agent is 10 nm; the particle sizes of the humic acid mineral powder...

Embodiment 2

[0052] The present embodiment provides a multi-effect compound fertilizer for repairing cadmium-contaminated soil, and its raw material composition includes:

[0053] Ammonium carbonate, 60 parts by weight;

[0054] Diammonium phosphate, 10 parts by weight;

[0055] Potassium sulfate, 60 parts by weight;

[0056] Agricultural rare earth nitrate, 0.5 parts by weight;

[0057]Synthetic methanol catalyst waste agent, 10 parts by weight;

[0058] The mixture of crane lice, licorice, and Baibucao according to mass ratio of 1: 1: 1, 5 parts by weight;

[0059] Humic acid mineral powder, 25 parts by weight;

[0060] Sepiolite, 25 parts by weight;

[0061] Plant ash, 3 parts by weight;

[0062] Kaolin, 1.1 parts by weight;

[0063] Zeolite, 0.3 parts by weight;

[0064] Quicklime, 10 parts by weight;

[0065] Bentonite, 15 parts by weight;

[0066] Hydroxyapatite, 10 parts by weight;

[0067] Organic fertilizer, 20 parts by weight.

[0068] The particle size of the agricul...

Embodiment 3

[0074] The present embodiment provides a multi-effect compound fertilizer for repairing cadmium-contaminated soil, and its raw material composition includes:

[0075] Ammonium sulfate, 40 parts by weight;

[0076] Superphosphate, 35 parts by weight;

[0077] Potassium silicate, 50 parts by weight;

[0078] Agricultural rare earth nitrate, 1.5 parts by weight;

[0079] Synthetic methanol catalyst waste agent, 5 parts by weight;

[0080] The mixture of paulownia flower, black grass, mint leaves, betel nut, and Cnidium Fructus according to mass ratio 1: 1: 1: 1: 1, 10 parts by weight;

[0081] Humic acid mineral powder, 40 parts by weight;

[0082] Sepiolite, 17 parts by weight;

[0083] Plant ash, 8 parts by weight;

[0084] Kaolin, 0.9 parts by weight;

[0085] Zeolite, 0.8 parts by weight;

[0086] Bentonite, 10 parts by weight;

[0087] Organic fertilizer, 20 parts by weight.

[0088] The particle size of the agricultural rare earth nitrate is 10 meshes, the particl...

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Abstract

The invention provides multiple-effect compound fertilizer for repairing cadmium soil pollution. The multiple-effect compound fertilizer comprises nitrogen, phosphorus and kalium nutritious components, rare earth element nitrate for agricultural use, waste catalyst agents, Chinese herbal medicine, humic acid mineral powder, sepiolite, plant ash, kaolin and zeolite components, wherein the rare earth element nitrate for agricultural use, the waste catalyst agents, the Chinese herbal medicine, the humic acid mineral powder, the sepiolite, the plant ash, the kaolin and the zeolite components are used according to a proper ratio. After the compound fertilizer is applied to soil polluted by cadmium, the cadmium in the soil is effectively passivated and fixed through the synergistic effect of the components while the polluted soil is effectively repaired, the activity of cadmium in the soil is remarkably lowered, absorption of cadmium by crops is lowered, and thus the content of cadmium in the crops is lowered remarkably. Complex improver has good stability and environment-friendly performance and is free of secondary pollution and low in cost, and large-area popularization is easily implemented; when the fertilizer is applied to soil polluted by cadmium, the application amount is only 10-200 kg/hm<2>, and the content of cadmium in the crops can be lowered remarkably and meets the national food safety standard.

Description

technical field [0001] The invention relates to a multi-effect compound fertilizer, a preparation method and application thereof, and belongs to the technical field of polluted soil remediation. Background technique [0002] With the rapid development of industry and the continuous increase of agricultural input intensity, a large number of heavy metals and other pollutants have entered the soil environment, which has caused heavy metal pollution in the soil and has become a worldwide problem that has received widespread attention. According to reports, nearly 20 million hectares of cultivated land in my country are polluted by cadmium, mercury, arsenic, chromium, and lead. 3 , accounting for about 20% of the country's total cultivated land, which has seriously affected the development of modern agriculture and social stability. [0003] The pollution of heavy metals in the soil directly leads to the excessive heavy metal content of agricultural products, and then enters th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/04A01C21/00C05G3/80
Inventor 刘梅影戴星照杨志平黄齐
Owner 江西省山江湖开发治理委员会办公室
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