A conditioner for acidic farmland heavy metal polluted soil and its preparation method and application

A technology that pollutes soil and heavy metals, applied in soil conditioning materials, applications, agricultural machinery and implements, etc., can solve problems such as affecting the environment and wasting resources, and achieve the effects of reducing application, increasing organic matter content, and reducing migration and transformation.

Inactive Publication Date: 2021-02-02
湖南本农环境科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Betel nut dregs are generally discarded as garbage, which not only affects the environment but also wastes resources

Method used

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  • A conditioner for acidic farmland heavy metal polluted soil and its preparation method and application
  • A conditioner for acidic farmland heavy metal polluted soil and its preparation method and application
  • A conditioner for acidic farmland heavy metal polluted soil and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Formula 1: 100 parts of diatomite powder, 5 parts of ferrihydrite, 2 parts of quicklime, 12 parts of betel nut residue powder, and 8 parts of decomposed betel nut residue.

[0042] Formula 2: 100 parts of diatomite powder, 2 parts of apatite, 2 parts of quicklime, 12 parts of betel nut residue powder, and 8 parts of decomposed betel nut residue.

[0043] Formula 3: 100 parts of diatomite powder, 5 parts of ferrihydrite, 2 parts of apatite, 2 parts of quicklime, 8 parts of decomposed betel nut residue powder, and 8 parts of decomposed betel nut residue.

[0044] Formula 4: 100 parts of diatomite powder, 5 parts of ferrihydrite, 2 parts of apatite, 1 part of quicklime, 12 parts of betel nut residue powder, and 10 parts of decomposed betel nut residue.

[0045] Formula 5: 100 parts of sepiolite powder, 3 parts of goethite, 3 parts of sodium phosphate, 2 parts of quicklime, 15 parts of betel nut residue powder, and 8 parts of decomposed betel nut residue.

[0046] Formula ...

Embodiment 2

[0054] Field plot application test of the above formulations 1-6 soil remediation agents:

[0055] 1) Take the farmland polluted by acidic heavy metals in a certain town in Hunan Province, and conduct a field plot test. The cadmium content in the soil is 0.67mg / kg, the pH is about 6, and the experimental material is rice.

[0056] The test field was divided into 28 test plots, with 7 treatments in total, and 4 parallels for each treatment. One treatment was used as the control group without adding soil remediation agent, and formulas 1 to 6 were all taken as one treatment. The area of ​​the plot is 4m×5m, arranged randomly. At the beginning of the experiment, no fertilizer was applied to the test field, the field was plowed and leveled, and single-row and single-irrigation were implemented to prevent the spread of fertilizer and water between plots. Each treatment is applied with soil remediation agent in the corresponding plot, and the soil conditioner addition rate is 200kg...

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Abstract

The invention discloses a conditioner for heavy-metal-contaminated soil of an acid farmland and a preparation method and application thereof. The soil conditioner is mainly composed of clay minerals,iron-based minerals, phosphorus-based compounds, betel nut residue decomposed fertilizer, betel nut residue powder, quick lime and the like; the preparation method of the conditioner comprises the steps that betel nut residues, farmyard manure and straw are decomposed by means of an accumulation method to obtain the betel nut residue decomposed fertilizer; betel nut residues are dried and crushedto obtain the betel nut residue powder; after the betel nut residue decomposed fertilizer, the betel nut residue powder, the clay minerals, the iron-based minerals and the phosphorus-based compounds are mixed, the quick lime is adopted for adjusting the pH to alkalinity, and the conditioner is obtained; the conditioner is used for the heavy-metal-contaminated soil so that not only can free heavy metal ions in the soil be efficiently adsorbed and fixed and prevented from entering crops effectively, but also the original ecological environment and soil structure of the farmland are not destroyed, the soil fertility is improved at the same time, the damage of harmful organisms in soil is reduced, and the yield of the crops is increased.

Description

technical field [0001] The invention relates to a soil conditioner, in particular to an acidic farmland heavy metal-polluted soil conditioner, and to a method of utilizing edible betel nut residue for secondary reproduction and utilization as a fertilizer and a heavy metal adsorbent with clay minerals, iron-based minerals and The compounding of phosphorus-based compounds and the like can improve soil fertility, and at the same time can effectively fix heavy metals such as cadmium, lead, mercury, nickel, copper, chromium, zinc, etc., and is an acidic farmland heavy metal polluted soil conditioner, belonging to the technical field of heavy metal polluted soil treatment. Background technique [0002] Betel nut is the second largest tropical economic crop in Hainan after rubber, with an annual output value of more than 10 billion yuan. There are many consumers of betel nut in Hunan, Hainan, Fujian, Taiwan, Guangdong and other provinces in China. In recent years, its chewing area ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/80C05G3/60C05G3/00C09K17/40C09K101/00C09K109/00
CPCC05B17/00C05D3/02C09K17/40C09K2101/00C09K2109/00C05G3/80C05D9/00C05D9/02C05F5/002C05F5/008
Inventor 刘登彪刘建华韩建均张美辉于松吴兵
Owner 湖南本农环境科技有限公司
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