A rapid restoration method of degraded grassland topsoil

A restoration method and topsoil technology, applied in the field of rapid restoration of degraded grassland topsoil, can solve problems affecting the ecological diversity of grassland areas, changes in soil physical and chemical properties, and poor ecology in grassland areas, so as to avoid deterioration and damage to biodiversity, improve Effects of soil quality, good extension prospects

Active Publication Date: 2021-10-22
GRASSLAND RES INST OF CHINESE ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, at present, a large amount of fertilizers, herbicides and other chemicals are used in the restoration of degraded grassland land, which causes serious and irreversible changes in the physical and chemical properties of the soil, seriously affects the development of ecological diversity in the grassland area, and easily causes bad ecology in the grassland area Phenomenon

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] This embodiment provides a method for rapid repair of degraded grassland topsoil, comprising the following steps:

[0031] (1) Sealing and sterilization: Spray the Chinese medicine extract on the land in the degraded grassland area, the spraying rate is 200kg / mu, then take the engineering fence mode to seal, and leave it for 7-14 days; the Chinese medicine extract is the water extract of Flos Lonicerae, The mass concentration is 6%;

[0032] (2) Soil preparation: add pasture fiber and biomass activated carbon to the soil in step (1), yet carry out deep plowing and plow 50cm and pasture fiber and biomass activated carbon are buried in the soil bottom, and the mass ratio of described pasture fiber and biomass activated carbon is 100:10, the application rate is 800kg / mu; the forage fiber is selected from more than one of alfalfa, stipa, foxtail, saxifrage, and Kobresia, and the forage fiber is prepared after drying and pulverizing the forage; biomass activated carbon selec...

Embodiment 2

[0038] This embodiment provides a method for rapid repair of degraded grassland topsoil, comprising the following steps:

[0039] (1) Sealing and sterilization: Spray the Chinese medicine extract on the land in the degraded grassland area, the spraying amount is 150kg / mu, and then take the mode of biological fence to seal and leave it for 7-14 days; the Chinese medicine extract is the water extract of dandelion , the mass concentration is 6%;

[0040] (2) Soil preparation: add pasture fiber and biomass activated carbon to the soil in step (1), yet carry out deep plowing and plow 45cm and pasture fiber and biomass activated carbon are buried in the soil bottom, and the mass ratio of described pasture fiber and biomass activated carbon is 100:15, the application rate is 900kg / mu; forage fiber is selected from Stipa, Setaria, saxifrage, and the forage fiber is prepared after drying and pulverizing the pasture; biomass activated carbon is selected from rice husk activated carbon and...

Embodiment 3

[0047] This embodiment provides a method for rapid repair of degraded grassland topsoil, comprising the following steps:

[0048] (1) Sealed and sterilized: the degraded grassland area is sprayed with a traditional Chinese medicine extract, the spraying rate is 150kg / mu, and then the mode of an engineering fence is adopted to seal, and left to stand for 8 days; the Chinese medicine extract is the water extract of alfalfa, the quality The concentration is 4%;

[0049] (2) Soil preparation: add pasture fiber and biomass activated carbon to the soil in step (1), yet carry out deep plowing and plow 45cm and pasture fiber and biomass activated carbon are buried in the soil bottom, and the mass ratio of described pasture fiber and biomass activated carbon is 100:12, the application rate is 1000kg / mu; the forage fiber is alfalfa, stipa, foxtail, saxifrage, and Kobresia japonicus; the forage fiber is prepared after the forage is dried and pulverized; the biomass activated carbon is se...

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Abstract

The invention provides a remediation method for degraded grassland topsoil, which inactivates the original microorganisms through sterilization and prevents subsequent damage to the dominant microorganisms; and then constructs a water-retaining layer at the bottom of the soil by adding grass fiber and biomass activated carbon at the bottom of the soil. , to avoid water loss, apply natural and green fertilizers to provide nutrients, avoid soil deterioration and biodiversity damage caused by chemical substances; further screen dominant microorganisms from the topsoil of healthy grassland areas for domestication and cultivation, and carry out with solid adsorption carriers. The compound plays the role of slowly releasing the microbial inoculum, so that the microbial inoculum can slowly and gradually adapt to the local microbial ecological environment. The method of the invention is simple in operation, low in cost, has a good promotion prospect, and can quickly repair the degraded grassland topsoil.

Description

technical field [0001] The invention belongs to the field of grassland ecological environment restoration, and in particular relates to a method for fast restoration of degraded grassland topsoil. Background technique [0002] Grassland is an important agricultural production resource in my country, with an area of ​​6 billion mu, accounting for 41% of the country's land area. It is not only an important green ecological barrier, but also an important animal husbandry production base. However, due to unreasonable utilization, grassland soil is seriously degraded at present, which has become a major resource and environmental problem in our country. [0003] The reason for the degradation of grassland land is mainly due to the fact that human beings have continuously taken a large amount of material and energy from the grassland land, and the grassland land has been unable to make ends meet for a long time, which violates the basic principles of ecological balance. The most ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/02A01B79/00C05G3/80C12N1/36
CPCA01B79/00A01B79/02C05D9/00C12N1/36C05G3/80C05D9/02C05F3/00C05F5/006C05F11/02
Inventor 王海那日苏塔娜张晓庆孙世贤
Owner GRASSLAND RES INST OF CHINESE ACAD OF AGRI SCI
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