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A method for biological improvement of saline-alkali soil

A saline-alkali land and soil technology, which is applied in the direction of soil preparation methods, soil conditioning materials, chemical instruments and methods, etc., can solve the problems of large-scale implementation difficulties, short service life, and long improvement cycle, and achieve the suppression of fungi, nematodes, and plant root diseases and insect pests , save cost, improve the effect of soil compaction

Active Publication Date: 2021-09-03
GRASSLAND RES INST OF CHINESE ACAD OF AGRI SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Relatively speaking, the improvement method of water conservancy projects treats the symptoms of salinized land but not the root cause. Agricultural improvement costs a lot and requires a lot of money, and the service life after treatment is short. Although chemical improvement is effective, it is easy to cause secondary pollution, and the capital investment is large and the technical requirements are high. , large-scale implementation is difficult; biological improvement can obtain good ecological and economic benefits, but the improvement period is long and the effect is slow. However, only biological improvement can gradually change the physical characteristics of soil, so that the soil structure changes, texture It is a cost-effective measure to restore salinized land, and the ultimate goal of saline-alkali land restoration is to achieve the restoration and reconstruction of vegetation.

Method used

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  • A method for biological improvement of saline-alkali soil

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Effect test

Embodiment 1

[0027] A method for biologically improving saline-alkali soil, comprising the following steps:

[0028] (1) Deep plow and loosen the saline-alkali land for soil-breaking treatment, with a depth of 25-35 cm, and expose to the sun for 5 days;

[0029] (2) apply soil improver, deep plowing and deep loosening again and turn over the soil, the depth of soil breaking is 25-35cm; process for 10 days; the soil improver is 40 parts of bio-organic fertilizer, 40 parts of desulfurized gypsum, 20 parts of humic acid, 15 parts of EDTA chelated zinc, 4 parts of potassium dihydrogen phosphate, 5 parts of wood vinegar, 45 parts of plant ash, 15 parts of kaolin, 18 parts of water retaining agent;

[0030] (3) the acidity regulator is applied to the soil of step (2) with water at a concentration of 5%, and water is poured thoroughly until the water penetrates into the surface layer and is slightly dry; the amount of the acidity regulator citric acid is until 10-20cm deep pH reaches below 8.0; ...

Embodiment 2

[0035] A method for biologically improving saline-alkali soil, comprising the following steps:

[0036] (1) Deep plow and loosen the saline-alkali land for soil-breaking treatment, the depth of the soil-breaking is 25-35cm, and expose to the sun for 4 days;

[0037] (2) Apply soil improver, deep plowing and deep loosening again and turn over the soil, the depth of soil breaking is 25-35cm; process for 8 days; the soil improver is 30 parts of bio-organic fertilizer, 35 parts of desulfurized gypsum, 20 parts of humic acid, 15 parts of EDTA chelated zinc, 4 parts of potassium dihydrogen phosphate, 5 parts of wood vinegar, 45 parts of plant ash, 5 parts of kaolin, 16 parts of water retaining agent;

[0038] (3) the acidity regulator is applied to the soil of step (2) with water at a concentration of 10%, and water is poured thoroughly until the water penetrates into the surface layer and is slightly dry; pH reaches below 8.0;

[0039] (4) continue to apply microbial inoculum and t...

Embodiment 3

[0042] A method for biologically improving saline-alkali soil, comprising the following steps:

[0043] (1) Deep plow and loosen the saline-alkali land for soil-breaking treatment, the depth of the soil-breaking is 25-35cm, and expose to the sun for 4 days;

[0044] (2) apply soil improver, deep plowing and deep loosening again and turn over the soil, the depth of soil breaking is 25-35cm; process for 7 days; the soil improver is 35 parts of bio-organic fertilizer, 35 parts of desulfurized gypsum, 20 parts of humic acid, 15 parts of EDTA chelated zinc, 4 parts of potassium dihydrogen phosphate, 5 parts of wood vinegar, 45 parts of plant ash, 5 parts of kaolin, 17 parts of water retaining agent;

[0045] (3) the acidity regulator is applied to the soil of step (2) with water at a concentration of 0.5%, and water is poured thoroughly until the water penetrates into the surface layer and is slightly dry; pH reaches below 8.0;

[0046] (4) continue to apply microbial inoculum an...

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Abstract

The invention provides a method for biologically improving saline-alkali soil, mainly by planting salt-tolerant plants such as alfalfa on the saline-alkali land to improve the saline-alkali land, improve the land utilization rate, and solve the harm of salinization to the land. Among them, physical, chemical and biological methods are used to comprehensively improve saline-alkali land, and through deep plowing and subsoiling, biological fertilizers, microbial agents, and alfalfa planting, rationally discharge salt and prevent salt return; and use acidity regulators to reduce the salinity and pH value, in order to facilitate the growth of alfalfa, to achieve the effect of bioremediation of saline-alkali land.

Description

technical field [0001] The invention belongs to the technical field of saline-alkali land treatment, and in particular relates to a method for biologically improving saline-alkali land soil. Background technique [0002] Saline-alkali land is formed by redistribution of soluble salts in the soil and accumulation to the surface under unfavorable natural conditions such as climate, topography, soil texture, and hydrology. Of course, the unreasonable development of water and soil resources and the extensive farming system are also important factors for soil salinization. [0003] At present, the improvement methods of saline-alkali land mainly include hydraulic engineering improvement method, agricultural production improvement method, chemical improvement method and biological improvement method. The water conservancy improvement method mainly uses water conservancy measures such as irrigation and drainage to bring the salt in the area to the outside. The agricultural improve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/00A01B79/02A01G22/40C09K17/40C09K101/00C09K109/00
CPCA01B79/005A01B79/02A01G22/40C09K17/40C09K2101/00C09K2109/00
Inventor 李峰陶雅李雪徐丽君那亚花梅焦巍王荣司丙文
Owner GRASSLAND RES INST OF CHINESE ACAD OF AGRI SCI
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