Modifying agent capable of passivating vegetable garden soil heavy metal and preparation method and applying method thereof

A technology of improver and heavy metal, which is applied in the field of soil improvement and restoration, which can solve the problems of content increase and achieve the effects of reducing absorption, improving soil properties and reducing toxicity

Inactive Publication Date: 2011-10-05
INST OF QUALITY STANDARD & DETECTION TECH YUNNAN ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the existing heavy metal and arsenic (As) content in the soil caused by high-intensity continuous cropping and continuous application of a large amount of chemical fertilizers, which has not effectively reduced the heavy metal and arsenic (As) content in the polluted soil. Arsenic passivation and its technical defects and deficiencies that effectively reduce its toxicity to crops, its purpose is to provide a kind of improver that can effectively passivate heavy metals in polluted soil and reduce the harm of heavy metals in soil to the safety and quality of vegetables. The present invention also provides The preparation method, application method and application of the improver

Method used

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  • Modifying agent capable of passivating vegetable garden soil heavy metal and preparation method and applying method thereof
  • Modifying agent capable of passivating vegetable garden soil heavy metal and preparation method and applying method thereof
  • Modifying agent capable of passivating vegetable garden soil heavy metal and preparation method and applying method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1 A kind of amendment capable of passivating heavy metals in vegetable soil provided by the present invention and its preparation method

[0025]1. A kind of improving agent (i.e. the improving agent of the present invention described in embodiment 3 treatment 2) provided by the present invention can passivate heavy metals in vegetable field soil, it is made up of organic material and potassium polyacrylate, described The organic material and potassium polyacrylate are packaged separately, that is, they are not mixed together; the mass ratio of the amount of the organic material to the potassium polyacrylate is 9:1; the organic material is composed of the following components :

[0026] 100 kg of rice crop straw, 10 kg of livestock manure, 10 kg of potassium sulfate, 20 kg of lignite, 1.8×10 7 The number of effective viable bacteria / g actinomycetes ( Actinomyces ) 0.02 kg, 0.4×10 7 Effective number of viable bacteria / g of photosynthetic bacteria ( Photosynt...

Embodiment 2

[0030] The improving agent of the present invention of embodiment 2 is the improving agent of the present invention described in embodiment 3 treatment 3, and the mass ratio of this improving agent and its preparation method except the consumption of described organic material and the consumption of potassium polyacrylate is 7: Except 3, all the other components and their contents, the preparation method are all the same as in Example 1.

Embodiment 3

[0031] Example 3 Application of the present invention's improvement agent to passivate heavy metals in vegetable soil

[0032] 1. Test situation

[0033] 1.1. The test site: the test greenhouse of Yunnan Academy of Agricultural Sciences, the test soil is paddy soil, the texture is

[0034] Clay soil, the basic physical and chemical properties of the tested soil are shown in Table 1. Cultivated crops for the test: baby cabbage (variety name: Princess Koryo).

[0035] Table 1. Basic physical and chemical properties of the soil in the test site

[0036]

[0037] 1.2. Experimental setup: potted plants were used in the experiment, and 5 different treatments were set up, each treatment was repeated 4 times, and 2 seeds were planted on demand in each pot. Sow on September 2, and thin the seedlings at the seedling stage of the right age. See (Table 2) for the experimental treatments. The application method of the improvement agent of the present invention described in the follo...

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Abstract

The invention discloses a modifying agent capable of passivating vegetable garden soil heavy metal and a preparation method and an applying method thereof. The modifying agent consists of organic material and potassium polyacrylate in a mass ratio of 7:(3-9):1; the organic material comprises the following components in parts by weight: 100-120 parts of gramineous crop straws, 10-12 parts of animal manure, 10-12 parts of potassium sulfate, 20-22 parts of lignite, 0.02-0.03 part of actinomycetes, 0.02-0.03 part of photosynthetic bacteria, 0.04-0.05 part of bacillus, 0.02-0.03 part of aspergillus and 0.06-0.07 part of cellulose decomposition bacteria; the potassium polyacrylate is separately packaged and is mixed with the organic material when applied; during a fermentation period, moisture is controlled at 50-60 percent, and the temperature is controlled at 60 DEG C-70 DEG C; and after the application of the modifying agent, the water-soluble state and full content of Pb, Cd, Cr and the like in soil and vegetables can be reduced greatly.

Description

technical field [0001] The invention relates to the technical field of improvement and restoration of polluted soil, in particular to the improvement and restoration of vegetable field soil containing heavy metals harmful to organisms. Background technique [0002] Because heavy metals such as lead (Pb), cadmium (Cd), chromium (Cr), mercury (Hg) reach a certain amount and are harmful to the human body or other organisms after being absorbed by the human body, heavy metals that are highly toxic to the soil are produced. The treatment research, passivation of heavy metals in soil usually refers to the absorption of heavy metals containing lead (Pb), cadmium (Cd), chromium (Cr), mercury (Hg) and other toxic heavy metals in the soil from crops that are easy to be planted on the soil It is changed to be difficult to be absorbed by the crops, so as to reduce the toxicity of heavy metals in the soil to crops, so as to ensure the safety of humans and animals. The impact on soil hea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/42B09C1/08C09K101/00
Inventor 米艳华黎其万陆琳刘宏程和丽忠
Owner INST OF QUALITY STANDARD & DETECTION TECH YUNNAN ACAD OF AGRI SCI
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