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A kind of soil remediation agent for saline-alkali land and preparation method thereof

A soil remediation agent and a technology for saline-alkali land, which are applied in the field of environmental engineering to achieve the effects of improving fertility, reducing alkalinity and salt content, and enhancing soil remediation ability.

Active Publication Date: 2017-06-09
ELION RESOURCE GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the defects of the existing methods for improving saline-alkali land, the invention provides a restoration agent and a preparation method thereof

Method used

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  • A kind of soil remediation agent for saline-alkali land and preparation method thereof

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preparation example Construction

[0012] The invention provides a preparation method of a saline-alkali soil restoration agent, the method comprising: (1) dissolving C source, N source, P source and K source in at least part of the water at 60-100°C, stirring until completely dissolved; ( 2) Cool down to 18-40°C, add effective microorganisms and stir evenly, then add weathered coal and remaining water, stir well; (3) seal and place in a constant temperature environment of 38°C for 3-7 days of shaking and fermentation to obtain a soil repair agent ; wherein, relative to 100 parts by weight of water, the content of weathered coal is 5-10 parts by weight, wherein, relative to every gram of weathered coal, the number of viable microorganisms added is (2-9) × 10 9 CFU; wherein, based on the total weight of the saline-alkali soil restoration agent, the content of C in the restoration agent is 10-20% by weight, the content of N is 0.5-0.6% by weight, the content of P is 0.4-0.5% by weight, and the content of K is 0.35...

Embodiment 1

[0026] Cane sugar (Kaifeng Litian Sugar Industry Co., Ltd.) and nitrogen, phosphorus and potassium compound fertilizer (Shandong Yuanyang Fertilizer Co., Ltd. compound fertilizer, total nutrient ≥ 45%, N-P 2 o 5 -K 2 O (15:15:15)) is dissolved in 60 ℃ of hot waters of 30ml, take saline-alkali land soil restoration agent gross weight as a benchmark, make the C content in the restoration agent be 15% by weight, the N content be 0.5% by weight, and the P content be 0.4% by weight, K content is 0.35% by weight; after complete dissolution, the temperature of the solution drops to 40°C, and the number of viable bacteria added is 6×10 9 CFU of effective microorganisms (Beijing Zhongke Huinong Technology Service Center EM bacteria (special for planting)) Stir evenly, then add 10g of weathered coal and 70ml of water, stir well, seal and place in a constant temperature environment of 38°C for 6 days of shaking and fermentation to obtain saline-alkaline land Soil remediation agent.

Embodiment 2

[0028] Dissolve cane sugar (Kaifeng Litian Sugar Industry Co., Ltd.), urea (Shanghai Jiancheng Chemical Co., Ltd.), calcium magnesium phosphate fertilizer (Jinan Honghao Chemical Co., Ltd.) and potassium nitrate (Shanxi Jiaocheng Star Chemical Co., Ltd.) in 30ml In hot water at 60°C, based on the total weight of the saline-alkali soil restoration agent, the content of C in the restoration agent is 15% by weight, the content of N is 0.5% by weight, the content of P is 0.4% by weight, and the content of K is 0.35% by weight; completely After dissolving, the solution temperature dropped to 40°C, and the number of viable bacteria added was 6×10 9 CFU of effective microorganisms (Beijing Zhongke Huinong Technology Service Center EM bacteria (special for planting)) Stir evenly, then add 5g of weathered coal and 70ml of water and stir well, seal and place in a constant temperature environment of 38°C for 3 days of shaking fermentation to obtain saline-alkali land Soil remediation age...

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Abstract

The invention discloses a preparation method of a saline-alkali soil remediation agent. The method comprises steps as follows: dissolving a C source, an N source, a P source and a K source into at least part of water at the temperature of 60-100 DEG C, and stirring the mixture until complete dissolution; cooling the mixture to the temperature of 18-40 DEG C, adding effective microorganisms, adding decomposed coal and the rest water after even stirring, and fully and evenly mixing the mixture; placing the mixture in a constant temperature environment at the temperature of 38 DEG C in a sealed manner for swing fermentation for 3-7 days to obtain the soil remediation agent, wherein every 100 parts of water by weight, 5-10 parts of the decomposed coal are added, and for every 1 g of the decomposed coal, the living bacterium number of the added effective microorganisms is (2-9)*10<9> CFU. Compared with the decomposed coal and the effective microorganisms, the prepared soil remediation agent has the advantages that the soil remediation capacity is significantly improved, the alkalization degree and the salt content of soil salt of saline-alkali soil are obviously decreased, and the soil fertility of the saline-alkali soil is improved.

Description

technical field [0001] The invention relates to the field of environmental engineering, in particular to a saline-alkali restoration agent and a preparation method thereof. Background technique [0002] At present, the area of ​​saline soil in my country is about 34.6 million hectares, and 7.6 million hectares of cultivated land are salinized. Nearly 1 / 5 of the cultivated land is saline-alkali. Therefore, the improvement and restoration of saline-alkali land is of great significance to land governance and ecological environment protection. [0003] At present, saline-alkali land improvement technologies include physical improvement, hydraulic improvement, chemical improvement, and microbial improvement. Among them, physical improvement requires a large amount of work and the effect is not obvious; hydraulic improvement consumes too much water resources and only improves the salt content of saline-alkali land; Chemical improvement, such as using gypsum and olivine to repair s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C05G3/04C05F17/00C05G3/80
CPCC05F17/00C05G3/80Y02W30/40
Inventor 刘珊郭娟丽郭小雪周玉生王建伟
Owner ELION RESOURCE GROUP
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