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An improved carbonization and greening method for desert sand fixation

A desert and curing agent technology, applied in the fields of carbonization, greening, chemical sand fixation and biological sand control of desert soil, can solve the problems of poor environmental benefit and long-term stability, poor improvement effect, and high economic cost, shortening the curing cycle, reducing Small sand and dust, the effect of increasing the coverage area

Active Publication Date: 2022-03-25
NANJING FORESTRY UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the above-mentioned background technology, the present invention aims to propose an economical, practical, sustainable and efficient construction method for carbonization and greening of desert improvement to solve the problem of long improvement period, serious water loss, poor improvement effect, High economic cost, poor environmental benefits and long-term stability, etc., to realize low-carbon resource utilization of greenhouse gases and wastes in desert control improvement

Method used

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  • An improved carbonization and greening method for desert sand fixation
  • An improved carbonization and greening method for desert sand fixation
  • An improved carbonization and greening method for desert sand fixation

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] a. On the basis of the description of the above method steps, if the thickness of the desert soil layer is greater than 3.0m, the content of fine sand is 85%, and the moisture content is less than 4%, then the mixture of magnesium oxide and slag is selected as the main curing agent, and the content of magnesium oxide powder accounts for 80% of the total weight of the mixture; the curing agent slurry is prepared according to the water-solid ratio of 1.2;

[0052] b. The planting plant in the desert site is scheduled to be Populus euphratica, the processing depth of the mixing head 9 is set to 50cm, the soil loosening depth of the rotary plow 7 is 30cm, the width of the greening grid area is 2.0m, and the mobile form of the crawler vehicle A5 is set For row-by-row movement (such as image 3 ), the orientation signal of mechanical walking is set, and sends signal by transmitter 11;

[0053]c. open the pump A25 and the control valve A27, adjust the control valve A27 to mak...

Embodiment 2

[0059] a. On the basis of the steps of the above method, if the thickness of the desert soil layer is 1.0-3.0m, the content of fine sand is 60%, and the moisture content is less than 4%, then the mixture of magnesia and slag is selected as the main curing agent, magnesia powder The content accounts for 50% of the total weight of the mixture; the curing agent slurry is prepared according to the water-solid ratio of 1.2;

[0060] b. The planting plant on the desert site is scheduled to be camel thorn, the processing depth of the mixing head 9 is set to 30cm, the soil loosening depth of the rotary plow 7 is 20cm, the width of the greening grid area is 1.5m, and the movement of the crawler vehicle A5 is set The form is to move vertically and then horizontally (such as Figure 4 ), the orientation signal of mechanical walking is set, and sends signal by transmitter 11;

[0061] c. open the pump A25 and the control valve A27, adjust the control valve A27 to make the content of curi...

Embodiment 3

[0067] a. On the basis of the steps of the above method, if the thickness of the desert soil layer is 1.0m, the content of fine sand is 30%, and the moisture content is 5-7%, then the mixture of magnesium oxide and slag is selected as the main curing agent, and magnesium oxide powder The content accounts for 30% of the total weight of the mixture; the curing agent slurry is prepared according to the water-solid ratio of 1.0;

[0068] b. The planting plants on the desert site are scheduled to be halophytes, the processing depth of the mixing head 9 is set to be 25cm, the soil loosening depth of the rotary plow 7 is 10cm, the width of the greening grid area is 1.0m, and the tracked vehicle A5 is set. The form of movement is first vertical and then horizontal (such as Figure 4 ), the orientation signal of mechanical walking is set, and sends signal by transmitter 11;

[0069] c. Open pump A25 and control valve A27, adjust control valve A27 to make the content of curing agent in...

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Abstract

The invention discloses an improved carbonization greening method for desert sand fixation, and belongs to the technical field of desert control improvement. The method includes multiple steps of on-site survey and test, mechanical parameter setting, construction of separation wall and soil loosening in areas to be greened, embedding of porous pipes, spraying of nutrient matrix and plant seeds, laying of plastic film, ventilation carbonization and supply of nutrient solution. According to the sand thickness, fine particle content and moisture content of the desert, adjust the curing agent and plant type, treatment depth and carbonization method. Through the sequential work of each step, a large area of ​​desert can be isolated into a small area to be greened in a short period of time, avoiding the movement and accumulation of sand dunes; the use of film and porous pipes improves the efficiency of carbonation and reinforcement, and also promotes the germination and growth of plants. The invention solves the technical defects of the prior art, such as poor improvement greening effect, long improvement period, high economic cost, and poor environmental benefit in harsh environments, and realizes resource utilization of greenhouse gases and wastes in desert control improvement.

Description

technical field [0001] The invention discloses an improved carbonization greening method for desert sand fixation, belongs to the technical field of desert control improvement, and specifically relates to chemical sand fixation and biological sand control of desert soil. Background technique [0002] Under the sandy conditions of extremely arid, semi-arid and partially sub-humid areas, affected by natural factors or unreasonable human activities, the ecological balance is destroyed, and there is aeolian sand activity, which gradually forms the land degradation of wind erosion and wind erosion landform structure landscape . my country is one of the countries with the most serious desertification in the world, among which the desert is the most serious hazard. The desertification area has reached 809,000 square kilometers, and it is still expanding. Land desertification will threaten my country's ecological security and the sustainable development of social economy, as well a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G17/00A01G22/00A01B49/02A01B49/06A01C7/08A01C23/02A01G13/02A01G24/10A01G24/20A01G24/28A01G25/06G01D21/02G01N1/08G01N33/24E02D3/00
CPCA01G17/00A01G22/00A01B49/022A01B49/065A01C7/085A01G24/10A01G24/28A01G24/20A01G13/0275A01C23/023A01G25/06G01N33/24G01N33/246G01N1/08G01D21/02E02D3/00Y02A40/28
Inventor 蔡光华徐伟翔邵光辉赵志峰沈嘉毅赵曜钟煜清王俊阁
Owner NANJING FORESTRY UNIV
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