A kind of biological modifier for tidal flat saline-alkali soil and its preparation method and application

A technology of biological improver and saline-alkali land, which is applied in the field of biological improvement of tidal flat saline-alkali land, can solve the problems of unfavorable sustainable development in the coastal tidal flat area of ​​the Yangtze River Delta, the normal growth of crops affecting land productivity, and high salinity in the soil. The effect of floristic improvement, beneficial to the growth of economic crops, and reducing soil return salt

Active Publication Date: 2020-05-05
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the coastal saline soil, especially the newly reclaimed tidal flats, the soil has high salt content, surface accumulation of salt, and lack of soil nutrients, which seriously affect land productivity and normal crop growth. In addition, artificial blind reclamation, extensive agricultural farming methods, and sea reclamation The impact of other activities has caused further damage to the ecosystem, and the soil salinization has become more serious, which is not conducive to the sustainable development of the coastal tidal flats in the Yangtze River Delta.

Method used

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  • A kind of biological modifier for tidal flat saline-alkali soil and its preparation method and application
  • A kind of biological modifier for tidal flat saline-alkali soil and its preparation method and application

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The preparation of the bio-improvement agent of embodiment 1 tidal flat saline-alkali land

[0035] 1. Preparation of highly salt-tolerant microbial bacterial liquid: add 0.5 parts of EM engineering bacteria to 2 parts of molasses, 70 parts of water, and 3 parts of 1g / LCa(OH) in parts by weight 2 solution, 5 parts of 1g / LMg(OH) 2In the solution, ferment the fermented liquid obtained at 25° C. for about 30 h.

[0036] 2. Preparation of bio-improvement agent for tidal flat saline-alkali land: Weigh 1kg of sludge powder, 0.5kg of biochar powder, 0.1kg of rice husk powder, 0.5kg of highly salt-tolerant microbial bacterial liquid, 4kg of water, and 2.1kg of aquaculture wastewater. After anaerobic fermentation of highly salt-tolerant microbial liquid and water at 35°C for 7 days, add sludge powder, rice husk powder, and biochar powder, anaerobic fermentation for 10 days at 180r / min, and then aerobic fermentation for 7 days. Biological modifier.

Embodiment 2

[0037] The preparation of the bio-improvement agent of embodiment 2 tidal flat saline-alkali land

[0038] 1. Preparation of highly salt-tolerant microbial bacterial liquid: add 1 part of EM engineering bacteria to 3 parts of molasses, 75 parts of water, and 4 parts of 1g / LCa(OH) in parts by weight 2 solution, 7 parts of 1g / LMg(OH) 2 solution, fermented at 25°C for about 30 hours.

[0039] 2. Preparation of bio-improvement agent for tidal flat saline-alkali land: Weigh 1.5kg of sludge powder, 1kg of biochar powder, 0.6kg of rice husk powder, 0.8kg of highly salt-tolerant microbial bacterial liquid, 8kg of water, and 3kg of aquaculture wastewater. After anaerobic fermentation of salt-tolerant microbial liquid and water at 25°C for 10 days, add sludge powder, rice husk powder, and biochar powder, anaerobic fermentation at 230r / min for 7 days, and then aerobic fermentation for 5 days to obtain biological Improver.

Embodiment 3

[0040] The preparation of the bio-improvement agent of embodiment 3 tidal flat saline-alkali land

[0041] 1. Preparation of highly salt-tolerant microbial bacterial liquid: add 2 parts of EM engineering bacteria to 5 parts of molasses, 85 parts of water, and 5 parts of 1g / LCa(OH) in parts by weight 2 solution, 10 parts of 1g / LMg(OH) 2 solution, fermented at 25°C for about 30 hours.

[0042] 2. Preparation of bio-improvement agent for tidal flat saline-alkali land: Weigh 2kg of sludge powder, 2kg of biochar powder, 1kg of rice husk powder, 1kg of highly salt-tolerant microbial bacterial liquid, 15kg of water, and 4.5kg of aquaculture wastewater. After anaerobic fermentation at 30°C for 8 days, sludge powder, rice husk powder, and biochar powder were added, and anaerobic fermentation was performed at 260r / min for 8 days, followed by aerobic fermentation for 6 days to obtain the bio-improvement agent. .

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Abstract

A biological soil amendment for coastal saline-alkali soil, comprising the following components in parts by weight: 1-2 parts of sludge powder, 0.25-2 parts of charcoal powder, 0.1-1 part of rice hull powder, 4-15 parts of water, and 0.5-1 part of high salt tolerant microbial bacteria liquid. The biological soil amendment is simple in preparation process and low in cost, can rapidly increase the soil fertility to effectively improve the current situations of the coastal saline-alkali soil such as low fertility, high sand content and poor soil aggregate structure, increase the soil humus, and facilitates formation of aggregate structures, and organic acid generated after decomposition of the biological soil amendment can neutralize the alkalinity of the soil without contaminating the soil, the plough layer salt accumulation condition can be relieved, and commercial crop growth is facilitated.

Description

technical field [0001] The invention relates to the technical field of fertilizer configuration, in particular to a biological improvement agent for tidal flat saline-alkali land and its preparation method and application, in particular to a biological improvement method for tidal flat saline-alkali land. Background technique [0002] Soil salinization is one of the main types of soil degradation. Saline soil is a general term for a series of soils that are affected by the saline-alkali components in the soil, including various saline soils and alkaline soils, and other soils that are salinized and alkalized to varying degrees. According to incomplete statistics from UNESCO and FAO, the total area of ​​saline soil in the world is about 1.0×10 9 hm 2 , accounting for 7.26% of the earth's land area. The area of ​​saline soil in my country is vast, and the area of ​​saline soil in my country is about 9.913×10 7 hm 2 , including residual saline soil about 4.487×10 7 hm 2 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/00A01G22/40A01G22/05A01B79/02C05G3/80
CPCA01C21/005C05D9/00C05G3/80C05F5/002C05F7/00C05F11/08Y02P20/133
Inventor 张宇杰常婷婷杨绪邵孝候张展羽张洁李敏慧陈立华张齐兴
Owner HOHAI UNIV
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