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Preparation method of heavy metal soil repairing material in paddy field based on biocarbon blending fertilizer

A soil remediation and biochar technology, applied in the field of soil remediation, can solve the problems of limited crop growth promotion ability, poor comprehensive treatment effect of paddy fields, lack of nutrients in biochar, etc. low cost effect

Inactive Publication Date: 2020-02-11
徐州得铸生物科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, biochar itself lacks nutrients and has limited ability to promote the growth of crops, and the comprehensive management effect of direct application on rice fields is poor.

Method used

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  • Preparation method of heavy metal soil repairing material in paddy field based on biocarbon blending fertilizer
  • Preparation method of heavy metal soil repairing material in paddy field based on biocarbon blending fertilizer
  • Preparation method of heavy metal soil repairing material in paddy field based on biocarbon blending fertilizer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] see figure 1 , a heavy metal soil remediation material for paddy fields based on biochar blended fertilizer, including the following raw materials: 40% of total nutrients of nitrogen, phosphorus and potassium, 10% of multi-fissive biochar, 18% of organic matter, 15% of humic acid, chitosan 3%, amino acid 2%, superphosphate 2%, medical stone 3%, attapulgite 6% and microbial agent 1%.

[0050] During the preparation, the microbial agent was weighed and sprayed evenly on the multi-fisted biochar. During the spraying process, the multi-fisted biochar was stirred and mixed, and after the spraying was completed, it was left to stand at room temperature for 2 hours; Polyacid, chitosan, amino acid, superphosphate, medical stone and attapulgite were mixed with the multi-crack biochar sprayed with microbial agent, and placed in a mixer for stirring at a speed of 60r / min, and the stirring time was 45 minutes to get the mixture; take the mixture and put it in the disc granulator, ...

Embodiment 2

[0062] A heavy metal soil restoration material for paddy fields based on biochar blended fertilizer, including the following raw materials: 40% of total nutrients of nitrogen, phosphorus and potassium, 15% of multi-fissive biochar, 15% of organic matter, 15% of humic acid, and 2% of chitosan %, 2% amino acid, 2% superphosphate, 3% medical stone, 5% attapulgite and 1% microbial agent.

[0063] All the rest are consistent with Example 1.

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Abstract

The invention discloses a heavy metal soil repairing material in a paddy field based on biocarbon blending fertilizer. The biocarbon blending fertilizer is prepared by mixing biocarbon with chemical fertilizer; the biocarbon blending fertilizer is applied to soil, so that the effects of restoring heavy metal soil environments and improving soil physicochemical condition can be met, the effectiveness of nutrient elements of soils also can be affected, efficiency-increasing and production-increasing effects of carbon fertilizer are improved, and meanwhile, by utilizing the biocarbon subjected tospecial processing, the specific surface area is further improved, and thus, adsorption capability of pollutants in the soils can be enhanced; and saturated organic pollutants are decomposed througha microbial agent, so that the biocarbon can keep an adsorption effect on the pollutants in the soils for a long time, and improve a comprehensive treatment effect of the soils; and compared with conventional compound fertilizer, the biocarbon blending fertilizer disclosed by the invention has the advantages that accumulation of heavy metals is controlled, the yield of paddy rice can be increased,and the biocarbon blending fertilizer has popularization and application prospects in control of ecological environment pollution in the paddy field and application reduction and efficiency improvement of chemical fertilizer.

Description

technical field [0001] The invention relates to the technical field of soil remediation, in particular to a method for preparing a rice field heavy metal soil remediation material based on biochar blended fertilizer. Background technique [0002] Soil heavy metal pollution is one of the major global environmental hazards and may enter the human food chain through crops. Unlike pollution from other organic compounds, heavy metal pollution is difficult to degrade naturally. Many organic compounds can be detoxified or eliminated through the physical, chemical or biological purification of nature itself. However, heavy metals are enriched. For example, when heavy metals such as lead and cadmium enter the soil environment, they will accumulate for a long time and destroy the self-purification ability of the soil, making the soil a "reservoir" of pollutants. Planting crops on this kind of land, heavy metals can be absorbed by plant roots, resulting in crop yield reduction or the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/80C05F17/00C09K17/40C01B32/05C09K101/00
CPCC01B32/05C05B1/02C05F17/00C05G3/00C09K17/40C09K2101/00Y02W30/40
Inventor 张佳佳孙欣
Owner 徐州得铸生物科技有限公司
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