Construction method of desert greening project

Abstract

The invention relates to the technical field of desert planting, in particular to a desert greening project construction method which comprises the steps that desert soil is loosened, water-retaining agent injection and pH value adjusting operation are sequentially conducted on the desert soil, and vegetation planting is conducted after pit digging is conducted through a pit digging machine; the vegetation is fertilized, a water supply pipeline is established to irrigate the planted vegetation, and the vegetation is regularly maintained and monitored; respectively obtaining the survival number of the vegetation and the total planting number of the vegetation; determining the construction stability of the desert greening project based on the planting survival rate of the vegetation; if the construction stability does not meet the requirement, adjusting the fertilization period of the vegetation, or determining the growth resource supply effectiveness of the vegetation based on the pH value difference quantity of the desert soil at different depths; and if the growth resource supply effectiveness does not meet the requirement, adjusting the injection amount of the water-retaining agent. The construction stability of the desert greening project is improved.

Description

Technical Field

[0001] The invention relates to the technical field of desert planting, and in particular to a construction method for a desert greening project. Background Art

[0002] In the prior art, desert reforestation refers to the process of planting green plants in sandy soil and in a geographical environment with poor soil quality. The common method of transplanting trees in desert areas for greening is to plant seedlings or turf directly on the desertified land, but the result is often due to soil quality problems, resulting in serious loss of water and nutrients, and the survival rate of seedlings and turf is very low.

[0003] Chinese Patent Publication No.: CN108849284A discloses a construction method for desert greening project, including: S001, leveling and replacing soil, digging out surface sand, taking planting soil from surrounding areas to cover the desertified area to form a planting soil layer, and deep plowing the planting soil layer to loosen the mature soil and increase porosity. S002, dig deep well water, use a drilling rig to dig deep wells to get through groundwater, the depth of the well is at least 300 meters; S003, dig trenches to lay irrigation networks, use trenchers to dig trenches for laying irrigation pipes on the soil after leveling and replacing the soil, and lay irrigation pipes in the trenches; S004, plant seedlings, set lines at fixed points to determine the planting points, dig planting pits at the planting points, and plant seedlings; S005, lay fixed-point irrigation facilities, according to the arrangement of seedling planting, connect branches to the irrigation pipes next to each seedling to irrigate the seedlings; S006, post-planting maintenance management: supply water to the seedlings through irrigation facilities, remove dead seedlings and replant live seedlings in the dead seedlings. It can be seen that the construction method of the desert greening project has the problem that due to the harsh desert environment, some plants have poor tolerance to the desert environment, which leads to the inability of plants to effectively regulate their own physiological activities, so that plant growth is hindered, the survival rate is reduced, and the construction stability of the desert greening project is reduced. Summary of the invention

[0004] To this end, the present invention provides a construction method for a desert greening project, which is used to overcome the problem in the prior art that due to the harsh desert environment, some plants have poor tolerance to the desert environment, which results in the inability of plants to effectively regulate their own physiological activities, resulting in plant growth being hindered and the survival rate being reduced, thereby causing the construction stability of the desert greening project to decrease.

[0005] To achieve the above-mentioned purpose, the present invention provides a construction method for a desert greening project, comprising: loosening the desert soil, and injecting a water retaining agent and adjusting the pH of the desert soil in sequence, using a pit digger to dig holes and then planting vegetation; fertilizing the vegetation, establishing a water supply pipeline to irrigate the planted vegetation, and regularly maintaining and monitoring the vegetation; respectively obtaining the number of surviving vegetation and the total number of planted vegetation; determining the construction stability of the desert greening project based on the survival rate of the vegetation; if the construction stability does not meet the requirements, adjusting the fertilization cycle of the vegetation, or determining the effectiveness of the supply of vegetation growth resources based on the pH difference at different depths of the desert soil; if the effectiveness of the supply of growth resources does not meet the requirements, adjusting the injection amount of the water retaining agent, or adjusting the water supply pressure of the damaged water supply pipeline based on the water loss of vegetation irrigation.

[0006] Furthermore, the construction stability of the desert greening project is determined, including:

[0007] Compare the planting survival rate of the vegetation with the preset first survival rate;

[0008] If the planting survival rate of the vegetation is greater than the preset first survival rate, it is determined that the construction stability of the desert greening project does not meet the requirements.

[0009] Further, determining the effectiveness of the supply of growth resources for the vegetation includes:

[0010] Comparing the planting survival rate of the vegetation with the preset first survival rate and the preset second survival rate respectively;

[0011] If the planting survival rate of the vegetation is greater than the preset first survival rate and less than or equal to the preset second survival rate, it is preliminarily determined that the effectiveness of the vegetation growth resource supply does not meet the requirements, and whether the effectiveness of the vegetation growth resource supply meets the requirements is determined based on the difference in pH at different depths of the desert soil.

[0012] Furthermore, the fertilization cycle of the vegetation is adjusted, including:

[0013] Comparing the planting survival rate of the vegetation with the preset second survival rate;

[0014] If the planting survival rate of the vegetation is greater than a preset second survival rate, the fertilization cycle of the vegetation is reduced.

[0015] Furthermore, the reduction range of the fertilization cycle of the vegetation is determined by the difference between the planting survival rate of the vegetation and a preset second survival rate.

[0016] Furthermore, the injection amount of the water retaining agent is adjusted, including:

[0017] Comparing the pH difference of the desert soil at different depths with a preset first difference and a preset second difference respectively;

[0018] If the pH difference at different depths of the desert soil is greater than the preset first difference, it is determined that the supply effectiveness of vegetation growth resources does not meet the requirements;

[0019] If the pH difference of the desert soil at different depths is greater than the preset first difference and less than or equal to the preset second difference, increasing the injection amount of the water retaining agent;

[0020] If the difference in pH at different depths of the desert soil is greater than a preset second difference, it is preliminarily determined that the irrigation effectiveness of the vegetation does not meet the requirements, and whether the irrigation effectiveness of the vegetation meets the requirements is determined based on the water supply loss of the vegetation irrigation.

[0021] Furthermore, the increase range of the injection amount of the water retaining agent is determined by the difference between the pH difference of the desert soil at different depths and a preset first difference.

[0022] Furthermore, the water supply pressure of the damaged water supply pipe is adjusted, including:

[0023] comparing the water supply loss of the vegetation irrigation with a preset loss;

[0024] If the water supply loss of the vegetation irrigation is greater than the preset loss, it is determined that the irrigation effectiveness of the vegetation does not meet the requirements, and the water supply pressure of the damaged water supply pipe is reduced.

[0025] Furthermore, the water loss of the vegetation irrigation is the difference between the water flow at the input end of the water supply pipeline and the water flow at the output end of the water supply pipeline.

[0026] Furthermore, the reduction range of the water supply pressure of the damaged water supply pipe is determined by the difference between the water supply loss of vegetation irrigation and a preset loss.

[0027] Compared with the prior art, the beneficial effect of the present invention lies in that the method of the present invention adjusts the fertilization cycle of vegetation according to the planting survival rate of vegetation. Due to the harsh desert environment, some plants have poor tolerance to the desert environment, which results in the inability of plants to effectively regulate their own physiological activities, resulting in plant growth being hindered and the survival rate being reduced. By reducing the fertilization cycle of vegetation, the nutrients required for plant growth can be supplemented in time, the nutrient needs of plants can be ensured, and the survival rate can be improved. The injection amount of the water retaining agent is adjusted according to the pH difference of the desert soil at different depths. Since the distribution of the improvement materials is not reasonably arranged according to the actual soil conditions and plant growth needs when improving the multi-layer soil, the soil improvement effect is not good. By increasing the injection amount of the water retaining agent The amount of water can be distributed more evenly in the vertical direction of the soil, which can increase the water retention capacity of the soil and ensure that plants can absorb enough water from the soil during their growth. The water supply pressure of the damaged water supply pipe can be adjusted according to the water loss of vegetation irrigation. Due to frequent wind and sand activities in desert areas, sand particles will continuously rub against the surface of the pipe, causing wear on the outer wall of the pipe, resulting in dents or tiny cracks on the surface of the pipe, resulting in partial water loss and inability to reach the irrigation area. By reducing the water supply pressure of the damaged pipe, the pressure difference between the inside and outside of the pipe can be reduced, thereby slowing down the speed at which water leaks from the damaged area, thereby reducing water loss and allowing more water to be transported to the undamaged part of the pipe for irrigation, thereby improving the construction stability of the desert greening project.

[0028] Furthermore, the method of the present invention adjusts the fertilization cycle of vegetation by setting a preset first survival rate and a preset second survival rate. Due to the harsh desert environment, some plants have poor tolerance to the desert environment, which results in the inability of plants to effectively regulate their own physiological activities, resulting in plant growth being hindered and a reduced survival rate. By reducing the fertilization cycle of vegetation, the nutrients required for plant growth can be supplemented in time, the nutrient requirements of plants can be ensured, the survival rate can be improved, and the construction stability of the desert greening project is further improved.

[0029] Furthermore, the method of the present invention adjusts the injection amount of the water retaining agent by setting a preset first difference amount and a preset second difference amount. Since the distribution of the improvement materials is not reasonably arranged according to the actual situation of the soil and the growth needs of plants when improving the multi-layer soil, the soil improvement effect is not good. By increasing the injection amount of the water retaining agent, the distribution of water in the vertical direction of the soil can be more even, the water retention capacity of the soil can be increased, and it is ensured that plants can absorb sufficient water from the soil during their growth process, thereby further improving the construction stability of the desert greening project.

[0030] Furthermore, the method of the present invention adjusts the water supply pressure of the damaged water supply pipe by setting a preset loss amount. Due to frequent wind and sand activities in desert areas, sand particles will continuously rub against the surface of the pipe, causing wear on the outer wall of the pipe, resulting in dents or tiny cracks on the surface of the pipe, causing part of the water supply to be lost and unable to reach the irrigation area. By reducing the water supply pressure of the damaged pipe, the pressure difference between the inside and outside of the pipe can be reduced, thereby slowing down the speed at which water leaks from the damaged area, thereby reducing water supply loss and allowing more water to be transported to the undamaged part of the pipe for irrigation, further improving the construction stability of the desert greening project. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is an overall flow chart of a construction method for a desert greening project according to an embodiment of the present invention;

[0032] Figure 2 It is a logic flow chart of the construction method of the desert greening project according to an embodiment of the present invention;

[0033] Figure 3 A specific flow chart of the process of adjusting the fertilization cycle of vegetation in the construction method of the desert greening project according to an embodiment of the present invention;

[0034] Figure 4 The present invention is a specific flow chart of the process of adjusting the injection amount of the water retaining agent in the construction method of the desert greening project according to the embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0036] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0037] It should be noted that, in the description of the present invention, terms such as "up", "down", "left", "right", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is merely for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0038] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] See also Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, they are respectively an overall flow chart of the construction method of the desert greening project of the embodiment of the present invention, a logic flow chart, a specific flow chart of the process of adjusting the fertilization cycle of vegetation, and a specific flow chart of the process of adjusting the injection amount of the water retaining agent. A construction method of the desert greening project of the present invention includes:

[0040] Step S1, loosening the desert soil, injecting a water retaining agent and adjusting the pH of the desert soil in sequence, and using a pit digging machine to dig holes and then plant vegetation;

[0041] Step S2, fertilizing the vegetation, establishing a water supply pipeline to irrigate the planted vegetation, and regularly maintaining and monitoring the vegetation;

[0042] Step S3, respectively obtaining the number of surviving vegetation and the total number of planted vegetation;

[0043] Step S4, determining the construction stability of the desert greening project based on the survival rate of vegetation planting;

[0044] Step S5, if the construction stability does not meet the requirements, the fertilization cycle of the vegetation is adjusted, or the effectiveness of the supply of vegetation growth resources is determined based on the difference in pH at different depths of the desert soil;

[0045] Step S6, if the supply effectiveness of the growth resources does not meet the requirements, the injection amount of the water retaining agent is adjusted, or the water supply pressure of the damaged water supply pipe is adjusted based on the water loss of vegetation irrigation.

[0046] Specifically, the vegetation includes sago, sea buckthorn and poplar.

[0047] Specifically, water-retaining agents include polyacrylamide water-retaining agent, starch grafted acrylonitrile water-retaining agent, and humic acid water-retaining agent.

[0048] Specifically, the pH value of desert soil at different depths was detected using a pH meter.

[0049] Specifically, the water loss of vegetation irrigation is calculated after being detected by flow sensors respectively arranged at the input end and the output end of the water supply pipeline.

[0050] In implementation, the method of the present invention adjusts the fertilization cycle of vegetation according to the survival rate of vegetation. Due to the harsh desert environment, some plants have poor tolerance to the desert environment, which results in the inability of plants to effectively regulate their own physiological activities, resulting in plant growth being hindered and the survival rate being reduced. By reducing the fertilization cycle of vegetation, the nutrients required for plant growth can be replenished in time, the nutrient requirements of plants can be ensured, and the survival rate can be improved. The injection amount of the water retaining agent is adjusted according to the pH difference of the desert soil at different depths. Since the distribution of the improvement materials is not reasonably arranged according to the actual soil conditions and plant growth requirements when performing multi-layer soil improvement, the soil improvement effect is not good. By increasing the injection amount of the water retaining agent, the moisture can be increased. The more uniform distribution in the vertical direction of the soil can increase the water retention capacity of the soil and ensure that plants can absorb enough water from the soil during their growth. The water supply pressure of the damaged water supply pipe can be adjusted according to the water loss of vegetation irrigation. Due to frequent wind and sand activities in desert areas, sand particles will continuously rub against the surface of the pipe, causing wear on the outer wall of the pipe, resulting in dents or tiny cracks on the surface of the pipe, causing part of the water supply to be lost and unable to reach the irrigation area. By reducing the water supply pressure of the damaged pipe, the pressure difference inside and outside the pipe can be reduced, thereby slowing down the speed at which water leaks from the damaged area, thereby reducing water loss and allowing more water to be transported to the undamaged part of the pipe for irrigation, thereby improving the construction stability of the desert greening project.

[0051] Specifically, the construction stability of the desert greening project is determined, including:

[0052] The number of surviving vegetation and the total number of planted vegetation are obtained respectively, and the survival rate of planted vegetation is calculated;

[0053] Comparing the planting survival rate of the vegetation with a preset first survival rate;

[0054] If the planting survival rate of the vegetation is greater than the preset first survival rate, it is determined that the construction stability of the desert greening project does not meet the requirements.

[0055] Specifically, determining the effectiveness of the supply of growth resources for the vegetation includes:

[0056] Comparing the planting survival rate of the vegetation with the preset first survival rate and the preset second survival rate respectively;

[0057] If the planting survival rate of the vegetation is greater than the preset first survival rate and less than or equal to the preset second survival rate, it is preliminarily determined that the effectiveness of the vegetation growth resource supply does not meet the requirements, and whether the effectiveness of the vegetation growth resource supply meets the requirements is determined based on the difference in pH at different depths of the desert soil.

[0058] It can be understood that the three intervals corresponding to the preset first survival rate and the preset second survival rate correspond to three situations respectively:

[0059] The first interval is when the vegetation survival rate is less than or equal to the preset first survival rate, corresponding to the situation where the construction stability of the desert greening project meets the requirements;

[0060] The second interval is when the vegetation planting survival rate is greater than the preset first survival rate and less than or equal to the preset second survival rate. This corresponds to the situation where the distribution of improvement materials is not reasonably arranged according to the actual soil conditions and plant growth requirements during multi-layer soil improvement, resulting in poor soil improvement effects.

[0061] The third interval is when the survival rate of vegetation planting is greater than the preset second survival rate. The corresponding desert environment is relatively harsh, which causes some plants to have poor tolerance to the desert environment. As a result, the plants cannot effectively regulate their own physiological activities, which hinders plant growth and reduces the survival rate.

[0062] In practice, the preset first survival rate is generally selected in the range of [43%, 47%], and the preset second survival rate is generally selected in the range of [48%, 52%].

[0063] Preferably, the preferred embodiment of the preset first survival rate is 45%, and the preferred embodiment of the preset second survival rate is 50%.

[0064] Specifically, the survival rate of vegetation is the ratio of the number of surviving vegetation to the total number of planted vegetation.

[0065] In implementation, the method of the present invention determines the construction stability of the desert greening project by setting a preset first survival rate and a preset second survival rate, thereby reducing the impact of the reduced construction effectiveness of the desert greening project due to inaccurate determination of the construction stability of the desert greening project, and further improving the construction stability of the desert greening project.

[0066] Specifically, the fertilization cycle of the vegetation is adjusted, including:

[0067] Comparing the planting survival rate of the vegetation with the preset second survival rate;

[0068] If the planting survival rate of the vegetation is greater than a preset second survival rate, the fertilization cycle of the vegetation is reduced.

[0069] Specifically, the reduction range of the fertilization cycle of the vegetation is determined by the difference between the planting survival rate of the vegetation and a preset second survival rate.

[0070] Specifically, when the difference between the planting survival rate of vegetation and the preset second survival rate is within 5%, the fertilization cycle of the vegetation is reduced to 0.9 times the original; when the difference between the planting survival rate of vegetation and the preset second survival rate exceeds 5%, the fertilization cycle of the vegetation is reduced by 1 week. For example, the difference between the planting survival rate of vegetation and the preset second survival rate is 9%, the current vegetation fertilization cycle is 10 weeks, and the reduced vegetation fertilization cycle is 10×0.9-1×2=7 weeks.

[0071] In implementation, the method of the present invention adjusts the fertilization cycle of vegetation by setting a preset first survival rate and a preset second survival rate. Due to the harsh desert environment, some plants have poor tolerance to the desert environment, which results in the inability of plants to effectively regulate their own physiological activities, resulting in plant growth being hindered and a reduced survival rate. By reducing the fertilization cycle of vegetation, the nutrients required for plant growth can be supplemented in time, the nutrient requirements of plants can be ensured, the survival rate can be improved, and the construction stability of the desert greening project is further improved.

[0072] Specifically, adjusting the injection amount of the water retaining agent includes:

[0073] The pH values ​​of two adjacent depths in the desert soil are obtained respectively, and the pH value differences of the desert soil at different depths are calculated;

[0074] Comparing the pH difference of the desert soil at different depths with a preset first difference and a preset second difference respectively;

[0075] If the pH difference at different depths of the desert soil is greater than the preset first difference, it is determined that the supply effectiveness of vegetation growth resources does not meet the requirements;

[0076] If the pH difference of the desert soil at different depths is greater than the preset first difference and less than or equal to the preset second difference, increasing the injection amount of the water retaining agent;

[0077] If the difference in pH at different depths of the desert soil is greater than a preset second difference, it is preliminarily determined that the irrigation effectiveness of the vegetation does not meet the requirements, and whether the irrigation effectiveness of the vegetation meets the requirements is determined based on the water supply loss of the vegetation irrigation.

[0078] It can be understood that the three intervals corresponding to the preset first difference amount and the preset second difference amount correspond to three situations respectively:

[0079] The first interval is when the pH difference of desert soil at different depths is less than or equal to the preset first difference, and the effectiveness of the supply of vegetation growth resources meets the requirements;

[0080] The second interval is that the pH difference of desert soil at different depths is greater than the preset first difference and less than or equal to the preset second difference, which corresponds to the situation that when performing multi-layer soil improvement, the distribution of improvement materials is not reasonably arranged according to the actual soil conditions and plant growth requirements, resulting in poor soil improvement effect;

[0081] The third interval is that the difference in pH value of desert soil at different depths is greater than the preset second difference. This corresponds to frequent wind and sand activities in the desert area. The sand particles will continuously rub against the surface of the pipeline, causing wear on the outer wall of the pipeline, resulting in dents or tiny cracks on the surface of the pipeline, leading to partial water loss.

[0082] In practice, the preset first difference amount is generally selected in the range of [1.4, 1.6], and the preset second difference amount is generally selected in the range of [1.7, 1.9].

[0083] Preferably, the preferred embodiment of the preset first difference amount is 1.5, and the preferred embodiment of the preset second difference amount is 1.8.

[0084] Specifically, the pH difference at different depths of desert soil is the absolute value of the difference between the pH values ​​of two adjacent depths in the desert soil.

[0085] Specifically, the depth segment of desert soil is 10 cm, for example, 0-10 cm from the soil surface is the same depth segment, and 10-20 cm is the same depth segment.

[0086] In implementation, the method of the present invention determines the effectiveness of the supply of vegetation growth resources by setting a preset first difference amount and a preset second difference amount, thereby reducing the impact of the reduced construction stability of the desert greening project due to inaccurate determination of the effectiveness of the supply of vegetation growth resources, and further improving the construction stability of the desert greening project.

[0087] Specifically, the increase range of the injection amount of the water retaining agent is determined by the difference between the pH difference of the desert soil at different depths and a preset first difference.

[0088] Specifically, when the difference between the pH value of desert soil at different depths and the preset first difference is within 0.3, the injection amount of water retaining agent is increased to 1.1 times of the original; when the difference between the pH value of desert soil at different depths and the preset first difference exceeds 0.3, the injection amount of water retaining agent is increased by 0.5kg / m for every 0.2 above the preset first difference. 3For example, the difference between the pH value difference of desert soil at different depths and the preset first difference value is 0.7, and the current injection amount of water retaining agent is 2kg / m 3 The increased injection volume of water-retaining agent is 2×1.1+0.5×2=3.2kg / m 3 .

[0089] In implementation, the method of the present invention adjusts the injection amount of the water retaining agent by setting a preset first difference amount and a preset second difference amount. Since the distribution of the improvement materials is not reasonably arranged according to the actual situation of the soil and the growth needs of plants when improving the multi-layer soil, the soil improvement effect is not good. By increasing the injection amount of the water retaining agent, the distribution of water in the vertical direction of the soil can be more even, the water retention capacity of the soil can be increased, and it is ensured that the plants can absorb enough water from the soil during the growth process, thereby further improving the construction stability of the desert greening project.

[0090] Specifically, adjusting the water supply pressure of the damaged water supply pipe includes:

[0091] The water supply flow rate at the input end of the water supply pipeline and the water supply flow rate at the output end of the water supply pipeline are obtained respectively, and the water supply loss of vegetation irrigation is calculated;

[0092] comparing the water supply loss of the vegetation irrigation with a preset loss;

[0093] If the water supply loss of the vegetation irrigation is greater than the preset loss, it is determined that the irrigation effectiveness of the vegetation does not meet the requirements, and the water supply pressure of the damaged water supply pipe is reduced.

[0094] It can be understood that the two intervals corresponding to the preset loss amount correspond to two situations:

[0095] The first interval is when the water loss of vegetation irrigation is less than or equal to the preset loss, and the irrigation effectiveness of the corresponding vegetation meets the requirements;

[0096] The second interval is when the water loss from vegetation irrigation is greater than the preset loss. This corresponds to frequent wind and sand activities in desert areas. Sand particles will continuously rub against the surface of the pipe, causing wear on the outer wall of the pipe, resulting in dents or tiny cracks on the surface of the pipe, leading to partial water loss.

[0097] In practice, the preset loss is generally selected in the range of [1m 3 , 3m 3 ].

[0098] Preferably, the preferred embodiment of the preset loss amount is 2m 3 .

[0099] In implementation, the method of the present invention determines the irrigation effectiveness of vegetation by setting a preset loss amount, thereby reducing the impact of the reduced construction stability of the desert greening project due to inaccurate determination of the irrigation effectiveness of vegetation, and further improving the construction stability of the desert greening project.

[0100] Specifically, the water loss of the vegetation irrigation is the difference between the water flow rate at the input end of the water supply pipeline and the water flow rate at the output end of the water supply pipeline.

[0101] Specifically, the reduction range of the water supply pressure of the damaged water supply pipe is determined by the difference between the water loss amount of vegetation irrigation and the preset loss amount.

[0102] Specifically, the difference between the water supply loss of vegetation irrigation and the preset loss is 1m 3 When the water loss of vegetation irrigation exceeds 1m, the water supply pressure of the damaged water supply pipe is reduced to 0.92 times of the original value; when the difference between the water loss of vegetation irrigation and the preset loss exceeds 1m 3 When the 3 The water supply pressure of the damaged water supply pipe is reduced by 0.03MPa. For example, the difference between the water loss of vegetation irrigation and the preset loss is 2m 3 The current water supply pressure of the water supply pipe is 0.5MPa, and the reduced water supply pressure of the damaged water supply pipe is 0.5×0.92-0.03×2=0.4MPa.

[0103] In implementation, the method of the present invention adjusts the water supply pressure of the damaged water supply pipe by setting a preset loss amount. Due to frequent wind and sand activities in desert areas, sand particles will continuously rub against the surface of the pipe, causing wear on the outer wall of the pipe, resulting in dents or tiny cracks on the surface of the pipe, causing part of the water supply to be lost and unable to reach the irrigation area. By reducing the water supply pressure of the damaged pipe, the pressure difference between the inside and outside of the pipe can be reduced, thereby slowing down the speed at which water leaks from the damaged area, thereby reducing water supply loss and allowing more water to be transported to the undamaged part of the pipe for irrigation, further improving the construction stability of the desert greening project.

[0104] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A construction method for desert greening project, characterized in that: include: The desert soil is loosened, and a water retaining agent is injected into the desert soil and the pH is adjusted in sequence, and a pit is dug using a pit digger and then vegetation is planted; Fertilizing the vegetation, establishing water supply pipelines to irrigate the planted vegetation, and regularly maintaining and monitoring the vegetation; Get the number of surviving vegetation and the total number of planted vegetation respectively; Determine the construction stability of desert greening projects based on the survival rate of vegetation; If the construction stability does not meet the requirements, the fertilization cycle of the vegetation is adjusted, or the effectiveness of the supply of vegetation growth resources is determined based on the difference in pH at different depths of the desert soil; If the effectiveness of the growth resource supply does not meet the requirements, the injection amount of the water retaining agent is adjusted, or the water supply pressure of the broken water supply pipe is adjusted based on the water loss of vegetation irrigation.

2. The construction method of desert greening project according to claim 1, characterized in that: Determine the construction stability of the desert greening project, including: Compare the planting survival rate of the vegetation with the preset first survival rate; If the planting survival rate of the vegetation is greater than the preset first survival rate, it is determined that the construction stability of the desert greening project does not meet the requirements.

3. The construction method of desert greening project according to claim 2 is characterized in that: Determining the availability of resources for the growth of the vegetation, including: Comparing the planting survival rate of the vegetation with the preset first survival rate and the preset second survival rate respectively; If the planting survival rate of the vegetation is greater than the preset first survival rate and less than or equal to the preset second survival rate, it is preliminarily determined that the effectiveness of the vegetation growth resource supply does not meet the requirements, and whether the effectiveness of the vegetation growth resource supply meets the requirements is determined based on the difference in pH at different depths of the desert soil.

4. The construction method of desert greening project according to claim 3 is characterized in that: The fertilization cycle of the vegetation is adjusted, including: Comparing the planting survival rate of the vegetation with the preset second survival rate; If the planting survival rate of the vegetation is greater than a preset second survival rate, the fertilization cycle of the vegetation is reduced.

5. The construction method of desert greening project according to claim 4 is characterized in that: The reduction range of the fertilization cycle of the vegetation is determined by the difference between the planting survival rate of the vegetation and a preset second survival rate.

6. The construction method of desert greening project according to claim 3 is characterized in that: The injection amount of the water retaining agent is adjusted, including: Comparing the pH difference of the desert soil at different depths with a preset first difference and a preset second difference respectively; If the pH difference at different depths of the desert soil is greater than the preset first difference, it is determined that the supply effectiveness of vegetation growth resources does not meet the requirements; If the pH difference of the desert soil at different depths is greater than the preset first difference and less than or equal to the preset second difference, increasing the injection amount of the water retaining agent; If the difference in pH at different depths of the desert soil is greater than a preset second difference, it is preliminarily determined that the irrigation effectiveness of the vegetation does not meet the requirements, and whether the irrigation effectiveness of the vegetation meets the requirements is determined based on the water supply loss of the vegetation irrigation.

7. The construction method of desert greening project according to claim 6, characterized in that: The increase range of the injection amount of the water retaining agent is determined by the difference between the pH difference of the desert soil at different depths and a preset first difference.

8. The construction method of desert greening project according to claim 7 is characterized in that: The water supply pressure of the damaged water supply pipe is adjusted, including: comparing the water supply loss of the vegetation irrigation with a preset loss; If the water supply loss of the vegetation irrigation is greater than the preset loss, it is determined that the irrigation effectiveness of the vegetation does not meet the requirements, and the water supply pressure of the damaged water supply pipe is reduced.

9. The construction method of desert greening project according to claim 8, characterized in that: The water loss of the vegetation irrigation is the difference between the water flow rate at the input end of the water supply pipeline and the water flow rate at the output end of the water supply pipeline.

10. The construction method of desert greening project according to claim 9, characterized in that: The reduction range of the water supply pressure of the damaged water supply pipe is determined by the difference between the water loss of vegetation irrigation and the preset loss.

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