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Method for repairing degenerated soil using lucerne and beneficial rhizosphere microorganisms

A microbial remediation, alfalfa technology, applied in the field of remediation of soil degraded due to soil erosion, can solve problems such as rare research and no patent formation, and achieve the effects of maintaining soil and water, loosening soil quality, and improving microbial activity.

Inactive Publication Date: 2009-05-27
SOUTHWEST UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is still little research on the compound effect of the combination of the two, and no related patents have been formed.

Method used

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  • Method for repairing degenerated soil using lucerne and beneficial rhizosphere microorganisms
  • Method for repairing degenerated soil using lucerne and beneficial rhizosphere microorganisms
  • Method for repairing degenerated soil using lucerne and beneficial rhizosphere microorganisms

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1: The test soil is purple parent soil, no rhizobia seed dressing is used, and no strains are applied. After planting potted alfalfa for three months, it is turned into the in-situ soil without adding cellulolytic bacteria. Retting for two months. The increase rates of various soil indicators are shown in Table 1.

[0021] Table 1

[0022]

Embodiment 2

[0023] Embodiment 2: test soil is purple parent material soil, use acid-resistant meliloti rhizobium 91522 seed dressing, use bacillus megaterium, nitrogen-fixing bacteria, potassium bacteria to sterilize, promptly lose each 2.5ml of dead bacterium suspension of biological activity After three months of planting alfalfa, turn it into the soil in situ, add 2.5ml / kg of the sterilized bacterial suspension of cellulolytic bacteria, and ripen it for two months. The increase rates of various soil indicators are shown in Table 2.

[0024] Table 2

[0025]

Embodiment 3

[0026] Embodiment 3: test soil is purple parent material soil, use acid-resistant meliloti rhizobium 91522 seed dressing, use bacillus megaterium live bacterium suspension 2.5ml / kg soil, nitrogen-fixing bacterium live bacterium suspension 5ml / kg soil, potassium bacterium kill over 2.5ml / kg soil of bacteria suspension, three months after planting alfalfa, turn it into the soil in situ, add 2.5ml / kg soil of live cellulolytic bacteria suspension, and retting for two months. The increase rates of various soil indicators are shown in Table 3.

[0027] table 3

[0028]

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Abstract

The invention relates to a method for remedying degenerated soil resulting from water and soil loss, and the method is characterized by remedying the barren and compact soil by biological nitrogen fixation of rhizobia of purple alfalfa rhizosphere and microecological function of the rhizosphere of other beneficial microbes. The method comprises the following steps: dressing purple alfalfa seeds with acid-resistant alfalfa rhizobia 91522 and sowing the purple alfalfa seeds on the degenerated and untilled soil; only applying living bacteria or sterile bacteria suspension and water during a growing process of the purple alfalfa, wherein, the bacteria suspension comprises a bacillus megatherium suspension, an associative nitrogen-fixation bacteria suspension and a bacillus mucilaginosus suspension; harvesting the alfalfa plants after planting the purple alfalfa three months later, turning the alfalfa roots into in-situ soil, applying living cellulose-decomposing bacteria or sterile cellulose-decomposing bacteria suspension, and aging the in-situ soil for two months; tilling the soil to plant the alfalfa of the next season until the soil is remedied. The method can effectively improve microbial activities of the degenerated soil, increase all-purpose and effective nutrients in the degenerated soil and scarify the soil, and conserve water and soil and get a great quantity of fine pasture to develop the animal husbandry.

Description

technical field [0001] The invention relates to a method for repairing soil degraded by water and soil erosion. Background technique [0002] The situation of soil erosion in our country is quite serious. In order to repair the barren soil degraded by water and soil erosion, the first thing to do is to take measures to reduce or prevent the continued occurrence of water and soil erosion, and the second is to prescribe the right medicine for the barren soil and apply the nutrients needed by crops. At present, two methods are often used to reduce and prevent soil erosion. One is to use the chemical conditioner PAM (Polyacrylamide, polyacrylamide). PAM can better prevent topsoil loss. If 90% of the 3.3 billion tons of cultivated land topsoil loss is not scoured, it means about 2.97 billion tons (66t / hm 2 ) topsoil is preserved from erosion. However, since PAM is antimicrobial, it is mainly degraded by physical action, and its residual monomer acrylamide is a known carcinogen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/00A01C1/06A01G1/00
CPCY02P60/20
Inventor 张磊石杰曹良元张学军胡正峰徐静静邱勤韩光
Owner SOUTHWEST UNIVERSITY
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