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Method for repairing chromium-polluted soil by using bacterial residue and sorghum bicolor

A technology of chromium-contaminated soil and Sorghum grass, which is applied in the field of soil remediation to achieve the effect of simple facilities, convenient operation and improved remediation efficiency

Inactive Publication Date: 2019-09-06
HENAN ACAD OF SCI INST OF BIOLOGY LIABILITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For above-mentioned situation, in order to overcome the defective of prior art, the object of the present invention provides a kind of method utilizing fungus residue and Sorbus dansalum to repair chromium-contaminated soil, can effectively solve improving soil fertility, increase the growth of Sorbus dansarius, improve The problem of the remediation efficiency of Sorbus sargassum to chromium-contaminated soil

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] In the specific implementation of the present invention, a method for utilizing bacterium residue and Sorbus dandelion to restore chromium-contaminated soil comprises the following steps:

[0016] (1), bacteria residue treatment

[0017] Use waste mushroom sticks (bacteria residue) after cultivation of shiitake mushrooms. The raw materials of the bacteria sticks are made of: 83% of hard wood of broad-leaved trees, 15% of wheat bran, 1% of gypsum powder and 1% of sugar, and are autoclaved at 121°C for 25 minutes. , air-dried and crushed, passed through a 20-mesh sieve, and set aside;

[0018] (2) Sprinkle the air-dried and pulverized fungus residue evenly on the surface of the chromium-contaminated soil at a rate of 150 kg / mu, plow the soil 20 cm, rake it flat, and plant Sorrel grass after 6 days, with a row spacing of 45 cm and a seeding rate of 3 kg / mu. The depth is 4cm, cover the soil in time, water regularly during the plant growth process, manage according to the n...

Embodiment 2

[0020] A kind of method of the present invention utilizes bacterium slag and Sorbus dandelion to restore chromium-contaminated soil, comprising the following steps:

[0021] (1), bacteria residue treatment

[0022] Use waste mushroom sticks (bacteria residue) after cultivation of shiitake mushrooms. The raw materials of the bacteria sticks are made of: 82% hard wood of broad-leaved trees, 16% wheat bran, 0.9% gypsum powder and 1.1% sugar, and are autoclaved at 121°C for 25 minutes. , air-dried and crushed, passed through a 20-mesh sieve, and set aside;

[0023] (2) Spread the air-dried and pulverized fungus residue evenly on the surface of the chromium-contaminated soil at a rate of 120 kg / mu, plow the soil 17 cm, rake it flat, and plant Sorrel grass after 5 days, with a row spacing of 42 cm and a seeding rate of 2.6 kg / mu. The sowing depth is 4cm, cover the soil in time, water regularly during the plant growth process, manage according to the normal growth requirements of So...

Embodiment 3

[0025] A kind of method of the present invention utilizes bacterium slag and Sorbus dandelion to restore chromium-contaminated soil, comprising the following steps:

[0026] (1), bacteria residue treatment

[0027] Use waste mushroom sticks (bacteria residue) after cultivation of shiitake mushrooms. The raw materials of the bacteria sticks are made of: 84% hard wood of broad-leaved trees, 14% wheat bran, 1.1% gypsum powder and 0.9% sugar. Autoclaved at 121°C for 25 minutes , air-dried and crushed, passed through a 20-mesh sieve, and set aside;

[0028] (2) Spread the air-dried and pulverized fungus residue evenly on the surface layer of the chromium-contaminated soil at 190kg / mu, plow the soil 23cm, rake it flat, and plant Sorbus dandelion after 7 days, with a row spacing of 48cm and a seeding rate of 3.4kg / mu. The sowing depth is 5cm, cover the soil in time, water regularly during the plant growth process, manage according to the normal growth requirements of Sorbus dansana,...

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Abstract

The invention relates to a method for repairing chromium-contaminated soil by using bacterial residue and sorghum bicolor, and can effectively solve the problems of improving soil fertility, increasing the growth amount of the sorghum bicolor and improving the repairing efficiency of the sorghum bicolor to the chromium-contaminated soil. The method comprises the following steps: performing autoclaved sterilization on waste bacterial rods after mushroom cultivation, drying in air, crushing, uniformly spreading on the surface layer of the chromium-contaminated soil, plowing the soil, raking, planting the sorghum bicolor with sowing row spacing of 40-50 cm, sowing amount of 2.5-3.5 kg / mu, and sowing depth of 4 ~ 5 cm, covering the soil in time, watering regularly in the process of plant growth, managing according to the normal growth requirements of the sorghum bicolor, and collecting soil and plant samples for determination after 30 days of growth of the sorghum bicolor. The method can effectively improve the soil fertility, increase the growth of the sorghum bicolor, and improve the remediation of the chromium-contaminated soil by the sorghum bicolor, the bacterial residue can improve the soil, improve the soil fertility, increase the growth of plants, improve the remediation efficiency of the plants on the chromium-contaminated soil, and the method is pollution-free, pollution-free and environment-friendly.

Description

technical field [0001] The invention relates to soil remediation, in particular to a method for remediating chromium-polluted soil by utilizing fungus residues and sundan grass. Background technique [0002] With the rapid development of modern industry, agriculture, and transportation, soil heavy metal chromium pollution is becoming more and more serious, which not only affects the growth of crops, reduces the yield and quality of crops, but also threatens human health and life through the food chain, so The remediation of heavy metal-contaminated soil has become an urgent problem to be solved. Phytoremediation of heavy metal-contaminated soil has the advantages of being able to carry out on-site pollution, relatively low cost, and improving soil quality. As a green and environmentally friendly bioremediation technology, it has great potential in remediating heavy metal pollution. However, the current research shows that there are not many plants that efficiently act on he...

Claims

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Application Information

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IPC IPC(8): B09C1/00B09C1/10
CPCB09C1/10B09C1/105B09C2101/00
Inventor 杨文玲王佰涛李珊珊刘德海赵俊杰何蔚荭杜志敏甄静权淑静刁文涛王继雯胡宜亮陈国参
Owner HENAN ACAD OF SCI INST OF BIOLOGY LIABILITY
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