Device and method for enhancing air permeability and irrigation and drainage efficiency of plant pits

Abstract

The invention belongs to the technical field of arbor planting, and relates to a device and method for enhancing air permeability and irrigation and drainage efficiency of a tree pit. The annular pipe is horizontally placed in a plant pit, the communicating pipe is located in the plant pit, one end of the communicating pipe is communicated with the annular pipe, and the other end of the communicating pipe upwards extends out of the plant pit along the inner wall of the plant pit; air holes are formed in the side wall of the annular pipe; the annular pipe and the communicating pipe form a ventilation channel which is used for enhancing the air permeability of the plant pits and conducting efficient irrigation and drainage on the plant pits. By burying the communicating pipe and the annular pipe, air permeability is enhanced, normal breathing of arbor root systems under the compaction condition is facilitated, and meanwhile high-efficiency irrigation and drainage of moisture of the arbor root systems can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of tree planting, and relates to a device and method for enhancing the air permeability and irrigation and drainage efficiency of a tree hole, which is used for the growth of tree root systems. Background Art

[0002] Arbors are the backbone tree species in the garden, and they can play a leading role in both function and artistic treatment. In the growth of arbor, soil is one of the important links. This is because soil is a three-phase system of solid, liquid and gas, in which solids mainly include inorganic minerals and organic matter, liquids mainly include soil solution, and gases are mainly oxygen, nitrogen, carbon dioxide and water vapor. Under ideal conditions, the volume ratio of solid, liquid and gas in the soil is 2:1:1. Under this condition, the soil can not only provide support for plant growth, supply nutrients and water, but also ensure that the roots have good respiration. However, in urban greening, due to the lack of high-quality greening soil and the compaction of human activities, the soil of green spaces is generally hardened, and the respiration of plant roots is seriously hindered, which has become one of the main obstacles to the healthy growth of garden greening plants. In addition, the effective soil layer of arbor planting soil is generally thick, which is difficult to alleviate by simple tillage, so that the permeability of plant roots and the outside atmosphere is affected. In addition, it is difficult to discharge the excess water in the soil during the rainy season, and it is difficult for the water from surface irrigation in the hot and dry season to reach the surrounding of the plant roots. Soil permeability and water availability directly affect the healthy growth of plants. There is an urgent need to develop devices that enhance tree pit permeability and drainage efficiency to ensure the healthy growth of tree roots. Summary of the invention

[0003] In view of the technical problems existing in the prior art regarding the growth of tree roots, the present invention provides a device and method for enhancing the air permeability and irrigation and drainage efficiency of a tree hole.

[0004] The present invention enhances air permeability by burying connecting pipes and annular pipes, which is beneficial to the normal breathing of tree roots under compaction conditions, and can also achieve high-efficiency drainage and irrigation of tree root water.

[0005] In order to achieve the above object, the technical solution adopted by the present invention is:

[0006] A device for enhancing the air permeability and drainage and irrigation efficiency of a tree hole comprises an annular tube and a connecting tube; the annular tube is horizontally placed in the tree hole, the connecting tube is located in the tree hole, one end of the connecting tube is connected to the annular tube, and the other end of the connecting tube extends upwardly out of the tree hole along the inner wall of the tree hole; air holes are arranged on the side wall of the annular tube; the annular tube and the connecting tube form an air permeable channel for enhancing the air permeability of the tree hole and for efficient drainage and irrigation of the tree hole.

[0007] It is further defined that there are a plurality of air holes, and the plurality of air holes are arranged in a circle along the circumference of the annular tube.

[0008] It is further defined that the diameter of the annular tube is equal to the diameter of the connecting tube; and the diameter of the annular tube is 2.5 times the diameter of the air vent.

[0009] It is further defined that there are one or more annular tubes, and the plurality of annular tubes are distributed in the tree hole from bottom to top; and the plurality of annular tubes are all connected to the connecting tube.

[0010] It is further defined that the annular tube includes a lower annular tube and an upper annular tube distributed in the tree hole from bottom to top; and the connecting tubes are connected to the upper annular tube and the upper annular tube.

[0011] The method based on the device for enhancing the air permeability and drainage efficiency of tree holes comprises the following steps:

[0012] S1. Dig tree holes according to the determined tree planting location;

[0013] S2. According to the size of the soil ball, a ring tube is set at the bottom of the tree hole, and then a ventilation channel is formed between the bottom of the tree hole and the outside atmosphere through a connecting pipe;

[0014] S3, using a crane to stabilize the tree soil ball in the inner ring of the annular tube, so that the annular tube surrounds the outside of the tree soil ball and keeps the tree trunk vertical;

[0015] S4. After the planting soil is backfilled into the tree hole and compacted, water is applied through the connecting pipe to complete the planting; then normal maintenance measures are taken, such as fertilization and irrigation and drainage through the connecting pipe.

[0016] It is further defined that in step S2, the diameter of the air vent is 4 cm, and the diameter of the annular tube and the diameter of the connecting tube are both 10 cm;

[0017] When there is one annular tube, the vertical distance between the annular tube and the uppermost part of the tree hole is 40 cm to 50 cm;

[0018] When the annular tube comprises an upper annular tube and a lower annular tube, the vertical distance between the upper annular tube and the uppermost part of the tree hole is 30 cm to 35 cm; the vertical distance between the lower annular tube and the upper annular tube is 30 cm.

[0019] It is further defined that in step S4, when watering, an equal amount of water is poured into the surface layer and the annular tube.

[0020] It is further defined that step S4 also includes the following steps:

[0021] The trees are irrigated or drained by connecting the connecting pipe with an external drip irrigation device or a suction device to ensure that the moisture content in the planting soil around the trees is between 60% and 70%.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] 1. The present invention enhances air permeability by burying connecting pipes and annular pipes, which is beneficial to the normal breathing of tree roots under compaction conditions, and can also achieve high-efficiency drainage and irrigation of tree root water.

[0024] 2. The annular tube of the present invention is placed horizontally, the connecting tube is arranged longitudinally, and the longitudinal connecting tube is connected to the outside atmosphere and extends out of the soil, thereby improving air permeability.

[0025] 3. The present invention uses a connecting pipe. When water is poured into the connecting pipe during drought, the water can directly reach the tree root system through the connecting pipe and the annular pipe. When water accumulates in the rainy season, the accumulated water can be directly pumped out through the connecting pipe and the annular pipe to ensure that the trees grow with water and nutrients. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 A schematic diagram of the structure of the device for enhancing the air permeability and drainage efficiency of a tree hole provided in Example 1;

[0027] Figure 2 A schematic diagram of the structure of the device for enhancing the air permeability and drainage efficiency of a tree hole provided in Example 2;

[0028] in:

[0029] 100 - connecting pipe; 200 - annular pipe; 210 - lower annular pipe; 220 - upper annular pipe; 300 - air vent. DETAILED DESCRIPTION

[0030] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0031] Unless otherwise defined, technical or scientific terms used in the present invention shall have the common meanings understood by one having ordinary skills in the field to which the present invention belongs.

[0032] Technologies, methods, and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0033] It should also be understood that the specific embodiments described above are only used to explain the present invention, and the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, can make equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, which should be covered by the protection scope of the present invention / invention.

[0034] Example 1

[0035] The device for enhancing the air permeability and drainage and irrigation efficiency of a tree hole provided in this embodiment includes an annular pipe 200 and a connecting pipe 100; the annular pipe 200 is horizontally placed in the tree hole, the connecting pipe 100 is located in the tree hole, and one end of the connecting pipe 100 is connected to the annular pipe 200, and the other end of the connecting pipe 100 extends upward along the inner wall of the tree hole to the outside of the tree hole; air holes 300 are arranged on the side wall of the annular pipe 200; the annular pipe 200 and the connecting pipe 100 form an air permeable channel for enhancing the air permeability of the tree hole and efficiently draining and irrigating the tree hole.

[0036] See also Figure 1 In this embodiment, there is one annular tube 200.

[0037] In this embodiment, there are a plurality of air holes 300 , and the plurality of air holes 300 are arranged in a circle along the circumference of the annular tube 200 .

[0038] In practice, there are four, five, six or more air holes 300. Preferably, there are six air holes 300.

[0039] Preferably, the diameter of the annular tube 200 is equal to the diameter of the connecting tube 100 ; the diameter of the annular tube 200 is 2.5 times the diameter of the air vent 300 .

[0040] In this embodiment, since one end of the connecting pipe 100 is connected to the outside atmosphere and the other end is connected to the annular pipe 200 in the tree hole, and air holes 300 are arranged on the annular pipe 200, a ventilation channel is formed between the connecting pipe 100, the annular pipe 200 and the air holes 300, which can promote the breathing degree of the trees planted in the tree hole; at the same time, the trees planted in the tree hole can be efficiently irrigated and drained through the ventilation channel.

[0041] Example 2

[0042] The device for enhancing the air permeability and drainage and irrigation efficiency of a tree hole provided in this embodiment includes an annular pipe 200 and a connecting pipe 100; the annular pipe 200 is horizontally placed in the tree hole, the connecting pipe 100 is located in the tree hole, and one end of the connecting pipe 100 is connected to the annular pipe 200, and the other end of the connecting pipe 100 extends upward along the inner wall of the tree hole to the outside of the tree hole; air holes 300 are arranged on the side wall of the annular pipe 200; the annular pipe 200 and the connecting pipe 100 form an air permeable channel for enhancing the air permeability of the tree hole and efficiently draining and irrigating the tree hole.

[0043] In this embodiment, there are a plurality of air holes 300 , and the plurality of air holes 300 are arranged in a circle along the circumference of the annular tube 200 .

[0044] In practice, there are four, five, six or more air holes 300. Preferably, there are six air holes 300.

[0045] In this embodiment, there are multiple annular pipes 200, which are distributed in the tree pit from bottom to top; the multiple annular pipes 200 are all connected to the connecting pipe 100. In practice, there are two, three, four or more annular pipes 200, which are designed according to the depth of the tree pit.

[0046] See also Figure 2 Preferably, there are two annular tubes 200. The annular tubes 200 include a lower annular tube 210 and an upper annular tube 220 distributed in the tree hole from bottom to top; the connecting tube 100 is connected to the lower annular tube 210 and the upper annular tube 220. Six air holes 300 are evenly arranged on the circumference of the lower annular tube 210; six air holes 300 are evenly arranged on the circumference of the upper annular tube 220.

[0047] Preferably, the diameter of the annular tube 200 is equal to the diameter of the connecting tube 100 ; the diameter of the annular tube 200 is 2.5 times the diameter of the air vent 300 .

[0048] In this embodiment, since one end of the connecting pipe 100 is connected to the outside atmosphere, and the other end is respectively connected to the lower annular pipe 210 and the upper annular pipe 220 in the tree hole, and air holes 300 are arranged on the lower annular pipe 210 and the upper annular pipe 220, two layers of air permeable channels are formed between the connecting pipe 100, the lower annular pipe 210, the upper annular pipe 220 and the air permeable holes 300, thereby enhancing the breathing degree of the trees planted in the tree hole; at the same time, the trees planted in the tree hole are efficiently irrigated and drained through the air permeable channels.

[0049] Example 3

[0050] The device for enhancing the air permeability and irrigation and drainage efficiency of a tree hole provided in Example 1 is used to enhance the air permeability and irrigation and drainage efficiency of a tree hole.

[0051] In this embodiment, the tree planted is camphor tree, the planting season is March of the year, and the planting area is flat land.

[0052] This embodiment provides a method for enhancing the air permeability and drainage efficiency of a tree hole, comprising the following steps:

[0053] S1. Dig tree holes according to the determined tree planting location.

[0054] In this step, the diameter of the tree hole is 1.2 to 1.5 times the diameter of the tree soil ball. Preferably, the diameter of the tree hole is 1.2 times the diameter of the tree soil ball.

[0055] S2. According to the size of the soil ball, an annular tube 200 is set at the bottom of the tree hole, and then the connecting tube 100 and the annular tube 200 are connected through the connecting tube 100 to form an air permeable channel, and then the bottom of the tree hole is connected with the outside atmosphere through the air permeable channel to enhance air permeability.

[0056] In this step, the depth of the tree hole is 100 cm, the annular tube 200 is a layer, and the vertical distance between the annular tube 200 and the top of the tree hole is 40 cm to 50 cm; preferably, the vertical distance between the annular tube 200 and the top of the tree hole is 50 cm, that is, the annular tube 200 is set at 1 / 2 the depth of the tree hole.

[0057] In this step, the diameter of the air holes 300 is 4 cm, and the diameters of the annular tube 200 and the connecting tube 100 are both 10 cm. There are six air holes 300.

[0058] S3. Use a crane to stabilize the tree soil ball in the inner ring of the annular tube 200, so that the annular tube 200 surrounds the outside of the tree soil ball and keeps the tree trunk vertical.

[0059] S4. After the planting soil is backfilled into the tree hole and compacted, watering is performed through the connecting pipe 100 to complete the planting; after the planting is completed, normal maintenance measures are taken, such as fertilization and drainage and irrigation through the connecting pipe 100 to ensure that the moisture content in the planting soil around the tree is 60% to 70%.

[0060] In this step, when watering, equal amounts of water are poured into the planting soil surface layer and the annular tube 200. Since the annular tube 200 is a layer, that is, there are two watering points, at this time, the watering amount of the planting soil surface layer and the annular tube 200 each accounts for 50%.

[0061] This step also includes the following steps: connecting the connecting pipe 100 through an external drip irrigation device or a suction device to irrigate or drain the tree.

[0062] Specifically, when there is a lack of water in the tree hole, the external drip irrigation equipment is connected to the connecting pipe 100, and water is poured into the tree hole through the air permeable channel to achieve watering of the tree.

[0063] Specifically, when a lot of water accumulates in the tree hole, the excess water in the tree hole is discharged through the air permeable channel by connecting the external suction device to the connecting pipe 100 .

[0064] Example 4

[0065] The device for enhancing the air permeability and irrigation and drainage efficiency of a tree hole provided in Example 2 is used to enhance the air permeability and irrigation and drainage efficiency of a tree hole.

[0066] In this embodiment, the tree planted is camphor tree, the planting season is March of the year, and the planting area is flat land.

[0067] This embodiment provides a method for enhancing the air permeability and drainage efficiency of a tree hole, comprising the following steps:

[0068] S1. Dig tree holes according to the determined tree planting location.

[0069] In this step, the diameter of the tree hole is 1.2 to 1.5 times the diameter of the tree soil ball. Preferably, the diameter of the tree hole is 1.2 times the diameter of the tree soil ball.

[0070] S2. According to the size of the soil ball, an annular tube 200 is set at the bottom of the tree hole. Specifically, the annular tube 200 includes a lower annular tube 210 and an upper annular tube 220 distributed in the tree hole from bottom to top; then the connecting tube 100 is used to connect the connecting tube 100, the lower annular tube 210 and the upper annular tube 220 to form an air permeable channel, and then the bottom of the tree hole is connected to the outside atmosphere through the air permeable channel to enhance air permeability.

[0071] In this step, the depth of the tree pit is 100 cm, the annular tube 200 is two-layered, the diameter of the air holes 300 is 4 cm, and the diameters of the lower annular tube 210, the upper annular tube 220 and the connecting tube 100 are all 10 cm.

[0072] In this step, there are two annular tubes 200, including an upper annular tube 220 and a lower annular tube 210. At this time, the vertical distance between the upper annular tube 220 and the top of the tree hole is 30 cm to 35 cm. Preferably, the vertical distance between the upper annular tube 220 and the top of the tree hole is 30 cm; the vertical distance between the lower annular tube 210 and the upper annular tube 220 is 30 cm. That is, from top to bottom in the tree hole: the upper annular tube 220 is located at a depth of 30 cm from the top to the bottom of the tree hole, and the lower annular tube 210 is located at a depth of 60 cm from the top to the bottom of the tree hole.

[0073] In this step, six air holes 300 are distributed on the lower annular tube 210 and the upper annular tube 220 .

[0074] S3. Use a crane to stabilize the tree soil ball in the inner ring of the annular tube 200, so that the annular tube 200 surrounds the outside of the tree soil ball and keeps the tree trunk vertical.

[0075] S4. After the planting soil is backfilled into the tree hole and compacted, watering is performed through the connecting pipe 100 to complete the planting; after the planting is completed, normal maintenance measures are taken, such as fertilization and drainage and irrigation through the connecting pipe 100 to ensure that the moisture content in the planting soil around the tree is 60% to 70%.

[0076] In this step, when watering, equal amounts of water are poured into the planting soil surface and the annular tube 200. Since the annular tubes 200 include two, there are three watering points at this time, i.e., the watering amount at the planting soil surface, the lower annular tube 210 and the upper annular tube 220 each accounts for 30%.

[0077] This step also includes the following steps: watering or draining the trees through external drip irrigation equipment or suction equipment connected to the connecting pipe 100 to ensure that the moisture content of the planting soil around the trees is 60% to 70%.

[0078] Specifically, when there is a lack of water in the tree hole, the external drip irrigation equipment is connected to the connecting pipe 100, and water is poured into the tree hole through the air permeable channel to achieve watering of the tree.

[0079] Specifically, when a lot of water accumulates in the tree hole, the excess water in the tree hole is discharged through the air permeable channel by connecting the external suction device to the connecting pipe 100 .

[0080] The following tests are conducted on the indicators of the trees planted in Example 3 and Example 4 during their growth process to illustrate the air permeability and drainage performance.

[0081] In the experimental test, the following comparative example 1 was also set up.

[0082] Comparative Example 1

[0083] In this comparative example, trees were planted in a wedge-shaped green space in Shanghai using the traditional method.

[0084] In this comparative example, the tree planted is camphor tree, the planting season is March of the same year, and the planting area is flat land.

[0085] The method provided in this comparative example comprises the following steps:

[0086] S1. After determining the location for planting trees, dig a tree hole with a diameter of about 1.2 to 1.5 times the diameter of the soil ball.

[0087] S2. Use a crane to stabilize the tree in the center of the hole and keep the trunk vertical.

[0088] S3: Fill the tree hole with planting soil, compact it and water the surface of the soil to complete the planting. After planting, take normal maintenance measures, such as irrigation and fertilization.

[0089] The planting performance of the trees after planting in the above-mentioned Example 3, Example 4 and Comparative Example 1 was tested.

[0090] 1. Soil watering efficiency results

[0091] After planting, each group of trees was watered with the same amount of water (50L) during summer drought. The watering methods were respectively referred to Example 3, Example 4 and the comparative example; then the soil moisture (%) at different tree pit depths on each group of profiles was tested, and the soil watering efficiency was studied. At least 3 soil samples were taken at different depths, and then the average soil moisture was analyzed, detected and calculated. The results are shown in Table 1.

[0092] Table 1 Results of soil watering efficiency in different plantings

[0093] Tree hole depth H Comparative Example 1 Example 3 Example 4 0cm≤H<30cm 90％ 72％ 68％ 30cm≤H<60cm 30％ 50％ 67％ 60cm≤H≤100cm 36％ 60％ 64％

[0094] Note: In comparative example 1, all 50L of water was poured on the surface of the planting soil; in example 3, 25L of water was poured on the surface of the planting soil, and 25L of water was poured into the annular tube 200; in example 4, 30% of the planting soil surface, the lower annular tube 210 and the upper annular tube 220 were poured respectively, i.e. 50 / 3 (L).

[0095] As can be seen from Table 1, the closer to the planting soil surface, the greater the soil moisture using the method of Comparative Example 1; however, as the depth of the tree pit increases, the soil moisture increases using the methods of Example 3 and Example 4. This indicates that the device for enhancing the air permeability and drainage efficiency of the tree pit of the present invention is used during planting so that water can quickly penetrate into the soil, increase the humidity inside the soil, and keep it with sufficient moisture, which is conducive to the growth of trees. In addition, comparing the soil moisture of Example 3 and Example 4, when the annular tube 200 is two layers, the humidity of the soil in the tree pit is increased to a greater extent, which is more conducive to the growth of trees.

[0096] 2. Comparison of soil nutrient content

[0097] After planting, after half a year of maintenance with the same amount of fertilizer, soil samples were taken at different depths. At least 3 samples were taken at different depths to analyze and test the contents of nitrogen, phosphorus and potassium. The average values ​​of nitrogen, phosphorus and potassium contents were calculated. The results are shown in Tables 2 to 4.

[0098] According to the technical requirements for tree (camphor) planting, the standards for hydrolyzed nitrogen, available phosphorus and available potassium in the soil are 40mg / kg-200mg / kg, 5mg / kg-60mg / kg and 60mg / kg-300mg / kg respectively.

[0099] Table 2 Soil hydrolyzable nitrogen (mg / kg)

[0100] Tree hole depth H Comparative Example 1 Example 3 Example 4 0cm≤H<30cm 162 120 125 30cm≤H<60cm 32 66 72 60cm≤H≤100cm 26 70 78

[0101] Table 3 Soil available phosphorus (mg / kg)

[0102] Tree hole depth H Comparative Example 1 Example 3 Example 4 0cm≤H<30cm 49 43 36 30cm≤H<60cm 6 36 37 60cm≤H≤100cm 7 42 46

[0103] Table 4 Soil available potassium (mg / kg)

[0104] Tree hole depth H Comparative Example 1 Example 3 Example 4 0cm≤H<30cm 316 260 259 30cm≤H<60cm 72 246 263 60cm≤H≤100cm 65 272 281

[0105] From the data in Tables 2 to 4, it can be seen that: when the soil depth is closer to the surface layer, the content of hydrolyzed nitrogen, available phosphorus and available potassium in the soil is relatively high using the planting method of Comparative Example 1; however, as the soil depth increases, the content of hydrolyzed nitrogen, available phosphorus and available potassium in the planting methods of Examples 3 and 4 becomes significantly higher. This shows that the method of Comparative Example 1 has good air permeability and can quickly increase the nutrients in the soil surface layer, while the present invention uses the device for enhancing the air permeability and drainage efficiency of the tree pit during planting to improve the air permeability, so that the nutrients can reach the inside of the soil, thereby providing more nutrients for the root system in the soil and promoting the growth of the tree.

[0106] In addition, in order to illustrate the advantages of the method of the present invention in different planting areas, the following experimental studies were conducted.

[0107] During the experiment: the trees planted were camphor trees, the planting season was March of the same year, and the planting areas were flat land, low-lying areas and slope tops.

[0108] Referring to the methods of Example 3, Example 4 and Comparative Example 1, 6 trees were planted on flat ground, 2 trees were planted in low-lying areas and 2 trees were planted on the top of the slope. After each tree was placed in a tree hole, the planting soil was backfilled into the tree hole, and the surface of the planting soil was watered after compaction to complete the planting. After planting, normal maintenance measures were taken, such as irrigation and fertilization.

[0109] Then, half a year after planting (September), the growth of each treatment plant was observed, and the length (cm) of the diameter at breast height of each plant was measured. The results are shown in Tables 5 and 6. The standard diameter at breast height of the plant is 0.8-3.0 cm.

[0110] Table 5 Plant growth results under different planting methods

[0111]

[0112] Table 6 Length of DBH of each plant measured under different planting methods (cm)

[0113]

[0114] From the data in Table 5 and Table 6, it can be seen that for the planting method of Comparative Example 1, the methods of Example 3 and Example 4 have good air permeability, and water can reach the inside of the soil during irrigation, providing sufficient nutrients for the trees. Therefore, no matter what area they are planted in, the trees grow very well, and the plant diameter at breast height increases significantly. At the same time, it can also be seen that for low-lying areas, due to easy accumulation of water, the method of Comparative Example 1 cannot drain the accumulated water, resulting in excessive water, which is not conducive to the growth of trees; for flat land and slope tops, the planting method of Comparative Example 1 only irrigates the surface of the soil, and it is difficult for water to reach the inside and bottom of the soil, resulting in water deficiency, which is also not conducive to the growth of trees.

[0115] It can be seen from the results of Tables 1 to 6 above that, compared with traditional tree planting, in tree planting, by providing the device for enhancing the air permeability and drainage efficiency of the tree pit provided by the present invention, the utilization efficiency of water and nutrients in the irrigation and fertilization process after tree planting can be effectively improved. The device provided by the present invention can effectively improve the overall soil moisture and nutrient content in the cross section of the tree pit of the tree, and for low-lying areas, the soil around the root system can be effectively drained through this device. The growth status of the trees after planting for half a year also shows that the method of the present invention can effectively improve the growth of each plant, the moisture and nutrient status of the soil profile of the tree planting, and promote the healthy growth of the trees, especially under special site conditions such as low-lying waterlogging and slope, which effectively ensures a good growth environment for the plants.

[0116] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit the present invention, although the present invention has been described in detail with reference to the preferred embodiments. It should be understood by those skilled in the art that the technical solutions of the present invention can still be modified or replaced by equivalents, and these modifications or equivalent replacements cannot cause the modified technical solutions to deviate from the spirit and scope of the technical solutions of the present invention.

Claims

1. A device for enhancing the air permeability and drainage efficiency of a tree hole, characterized in that: The invention comprises an annular pipe (200) and a connecting pipe (100); the annular pipe (200) is horizontally placed in a tree hole, the connecting pipe (100) is located in the tree hole, one end of the connecting pipe (100) is connected to the annular pipe (200), and the other end of the connecting pipe (100) extends upwardly out of the tree hole along the inner wall of the tree hole; air holes (300) are arranged on the side wall of the annular pipe (200); the annular pipe (200) and the connecting pipe (100) form an air permeable channel for enhancing the air permeability of the tree hole and for efficiently draining and irrigating the tree hole.

2. The device for enhancing the air permeability and drainage efficiency of a tree hole according to claim 1, characterized in that: There are a plurality of the air holes (300), and the plurality of air holes (300) are arranged in a circle along the circumference of the annular tube (200).

3. The device for enhancing the air permeability and drainage efficiency of a tree hole according to claim 2, characterized in that: The diameter of the annular tube (200) is equal to the diameter of the connecting tube (100); the diameter of the annular tube (200) is 2.5 times the diameter of the air vent (300).

4. The device for enhancing the air permeability and drainage efficiency of a tree hole according to claim 3, characterized in that: There are one or more annular tubes (200), and the plurality of annular tubes (200) are distributed in sequence from bottom to top in the tree hole; and the plurality of annular tubes (200) are all connected to the connecting tube (100).

5. The device for enhancing the air permeability and drainage efficiency of a tree hole according to claim 4, characterized in that: The annular tube (200) comprises a lower annular tube (210) and an upper annular tube (220) which are distributed in the tree hole from bottom to top; the connecting tube (100) is connected to the upper annular tube (210) and the upper annular tube (220).

6. A method based on the device for enhancing the air permeability and drainage efficiency of tree holes according to claim 5, characterized in that: The following steps are involved: S1. Dig tree holes according to the determined tree planting location; S2. According to the size of the soil ball, an annular tube (200) is arranged at the bottom of the tree hole, and then a ventilation passage is formed between the bottom of the tree hole and the outside atmosphere through a connecting tube (100); S3, using a crane to stabilize the tree soil ball in the inner ring of the annular tube (200), so that the annular tube (200) surrounds the outside of the tree soil ball and keeps the tree trunk vertical; S4, after the planting soil is backfilled into the tree hole and compacted, watering is performed through the connecting pipe (100) to complete the planting; then normal maintenance measures are taken, such as fertilization and irrigation and drainage through the connecting pipe (100).

7. The method for enhancing the air permeability and drainage efficiency of a tree hole according to claim 6, characterized in that: In step S1, the diameter of the tree hole is 1.2 to 1.5 times the diameter of the tree soil ball.

8. The method for enhancing the air permeability and drainage efficiency of a tree hole according to claim 6, characterized in that: In step S2, the diameter of the vent hole (300) is 4 cm, and the diameter of the annular tube (200) and the diameter of the connecting tube (100) are both 10 cm; When there is one annular tube (200), the vertical distance between the annular tube (200) and the uppermost part of the tree hole is 40 cm to 50 cm; When the annular tube (200) comprises an upper annular tube (220) and a lower annular tube (210), the vertical distance between the upper annular tube (220) and the uppermost part of the tree hole is 30 cm to 35 cm; and the vertical distance between the lower annular tube (210) and the upper annular tube (220) is 30 cm.

9. The method for enhancing the air permeability and drainage efficiency of a tree hole according to claim 6, characterized in that: In the step S4, during watering, an equal amount of water is poured into the surface layer of the planting soil and the inside of the annular tube (200).

10. The method for enhancing the air permeability and drainage efficiency of a tree hole according to claim 6, characterized in that: The step S4 also includes the following steps: The external drip irrigation equipment or suction equipment is connected to the connecting pipe (100) to irrigate or drain the trees, ensuring that the moisture content in the planting soil around the trees is between 60% and 70%.

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