Seasonal waterflooding beach arbor willow trunk insertion afforestation method
By installing casings to protect the trunks of willow trees in seasonally flooded mudflats, the problems of aquatic animal grazing and water erosion were solved, resulting in a high survival rate and safe early growth of the willow trees, and improving the ecological restoration effect of the mudflats.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-31
- Publication Date
- 2026-03-17
AI Technical Summary
In seasonally flooded wetlands, when willows are propagated by cuttings, the newly planted trunks are easily washed away by the water flow and fall over, and are also easily eaten by aquatic animals, leading to death. Existing technologies have not been able to effectively solve the problem of aquatic animal grazing.
Insert willow trunks into the planting holes and cover them with sleeves. The sleeves serve as temporary protection to prevent aquatic organisms from contacting the base of the seedlings and grazing. The sleeves are removed during the dry season to avoid inhibiting the growth of the trunk.
It significantly improved the survival rate of willow cuttings from less than 50% to over 95%, ensuring the safety of seedlings in the early stages of growth and enhancing the effectiveness and economic benefits of beach ecological restoration.
Smart Images
Figure CN121667064A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of afforestation technology, and in particular to a method for afforestation of willow trees in seasonally flooded mudflats by inserting trunks. Background Technology
[0002] Willows are common deciduous trees, characterized by easy propagation, rapid growth, and tolerance to waterlogging, making them a preferred species for afforestation along the Yangtze River's floodplains. However, in seasonally flooded floodplains, willow cutting propagation faces the following technical challenges: 1. Large fluctuations in water levels cause newly propagated cuttings to be easily eroded and fall over; 2. The bark at the base of the willow trunks used for cutting propagation is relatively tender, easily attracting aquatic animals such as mudskippers, leading to death (e.g., Figure 1 (As shown). While methods such as soaking cuttings in chemicals can improve the survival rate of willow cuttings, none of these methods offer an effective solution to the problem of aquatic animal grazing. Furthermore, anti-grazing devices in these technologies are mostly designed for terrestrial animals (such as rodents and rabbits) and are not adapted to the floodplain environment. Therefore, there is an urgent need for a method of willow afforestation using trunk cuttings specifically for seasonally flooded floodplains along the Yangtze River to address the problem of aquatic animals grazing on the base of the tree trunks. Summary of the Invention
[0003] The purpose of this application is to provide a method for planting willow trees by cuttings in seasonally flooded mudflats, in order to solve the problem in related technologies that willow trees planted in seasonally flooded mudflats are easily eaten by aquatic animals and die.
[0004] To solve the above-mentioned technical problems, this application adopts the following technical solution:
[0005] This application provides a method for afforestation of willow trees by cuttings on seasonally flooded beaches, including the following steps:
[0006] Preparation of willow cuttings;
[0007] Select planting areas in seasonally flooded areas;
[0008] The planting area is prepared to form planting ridges, and planting holes are drilled on the planting ridges according to a preset planting density;
[0009] Prepare a sleeve and insert the sleeve and the willow branch into the planting hole, so that the sleeve is fitted onto the willow branch;
[0010] During the dry season, the casing is removed and the soil is piled up and compacted.
[0011] Optionally, the step of preparing willow cuttings includes:
[0012] During the spring afforestation season, select clonal branches of willow trees suitable for afforestation on riverbanks;
[0013] The asexual branches of the willow tree were cut into sections with a length of 3.5 to 4.5 m and a diameter of 2.0 to 3.5 cm.
[0014] The base of the branch is cut into a cone shape, and then an oblique cut is made to obtain the willow cutting.
[0015] Optionally, the step of drilling planting holes on the planting ridge according to the preset planting density includes:
[0016] Construct planting ridges that are 20 to 40 cm higher than the beach surface in the planting area;
[0017] Drainage ditches with a depth of 20 to 40 cm are dug between the planting ridges.
[0018] Optionally, the step of forming the implantation hole includes:
[0019] Make planting holes with a depth of 40cm on the planting ridges at a spacing of 3m × 6m.
[0020] Optionally, in step 3, the selected sleeve has an inner diameter of 4-6 cm and a length of not less than 35 cm. The sleeve is inserted into the planting hole to a depth of 5-10 cm, and the willow branch is inserted into the planting hole to a depth of not less than 50 cm. A gap of 1.5-2.5 cm is formed between the willow branch and the inner wall of the sleeve.
[0021] Optionally, after step 3 and before step 4, the following steps are also included:
[0022] Water is poured in stages along the gaps, and after the water has fully penetrated, the soil is covered and compacted.
[0023] Optionally, inserting the sleeve and the willow cutting into the planting hole includes the following steps:
[0024] Insert the sleeve axially into the planting hole;
[0025] The willow trunk is inserted into the soil through the sleeve.
[0026] Optionally, inserting the sleeve and the willow cutting into the planting hole includes the following steps:
[0027] The sleeve shaft is fitted onto the trunk of the willow tree;
[0028] Insert the willow branch and the sleeve into the planting hole.
[0029] Optionally, the sleeve is a PVC pipe.
[0030] Optionally, the step of removing the sleeve includes:
[0031] Pull the casing vertically upward out of the soil;
[0032] The sleeve was removed after being symmetrically cut along its longitudinal direction using an angle grinder.
[0033] Optionally, in step 4, after compacting the soil, a mound of soil 10-15cm higher than the surrounding area is formed at the base of the tree trunk.
[0034] Compared with existing technologies, the beneficial effects achieved by this application are as follows: This application establishes planting ridges in seasonally flooded areas and drills planting holes in the ridges. During planting, willow cuttings and sleeves are inserted into the planting holes, with the sleeves covering the willow cuttings. By using the sleeves as temporary physical protection, the contact channels between aquatic organisms and the base of the seedlings are effectively blocked, preventing the base of the willow cuttings from being eaten by aquatic animals and causing the plant to die. In addition, the sleeves also prevent the willow cuttings from being directly eroded by water flow, preventing them from falling over or breaking. After the willow cuttings have grown to a certain size, the sleeves are removed promptly, avoiding the inhibition of trunk growth caused by long-term wrapping.
[0035] The method described in this application is simple to operate, low in cost, and can be applied on a large scale. It can significantly improve the survival rate and stress resistance of cuttings. Compared with traditional beach cutting methods without specific protection, this method significantly increases the survival rate of willow cuttings from less than 50% to over 95%, an increase of more than 45%. This effectively ensures the early growth safety of seedlings, significantly improves the effectiveness and economic benefits of beach ecological restoration, and has broad application prospects. Attached Figure Description
[0036] To more clearly illustrate the technical solutions in the embodiments or related technologies of this disclosure, the accompanying drawings used in the description of the embodiments or prior art will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0037] Figure 1 This is a diagram illustrating the erosion of the roots of the willow tree provided in this application.
[0038] Figure 2 These are schematic diagrams of the method flow of some embodiments provided in this application;
[0039] Figure 3 These are schematic diagrams illustrating the sleeve installation of willow branches according to some embodiments provided in this application;
[0040] Figure 4 These are schematic diagrams of the sleeve and willow branch inserted into the planting hole according to some embodiments provided in this application;
[0041] Figure 5 These are schematic diagrams illustrating the removal of the sleeve in some embodiments provided in this application;
[0042] Figure 6 These are schematic diagrams illustrating soil compaction and tamping in some embodiments provided in this application;
[0043] Figure 7 These are schematic diagrams of the surviving willow trees according to some embodiments provided in this application. Detailed Implementation
[0044] The technical solutions in the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure / application, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit this application or its application or use.
[0045] In related technologies, the seasonal flooding of riverbanks along the Yangtze River is mainly influenced by natural seasonal changes and exhibits a clear periodic pattern. Specifically, the period from June to August is typically the high-water season, during which water levels rise and large areas of riverbanks are submerged. This can cause the bases of willow seedlings planted on the riverbanks in the spring to be submerged, leading to their death from being eaten by aquatic animals such as weevils.
[0046] To address the aforementioned problems, this application introduces a method for afforestation of willow trees by cuttings on seasonally flooded mudflats, referencing... Figure 2 The method includes the following steps:
[0047] S100, used to prepare willow cuttings.
[0048] As an optional implementation method, the steps for preparing willow cuttings include: during the spring afforestation season (e.g., early March), selecting suitable, disease- and pest-free willow clonal branches, such as J549, for afforestation on riverbanks. After selection, cuttings of 3.5–4.5 m in length and 2.0–3.5 cm in diameter are taken from the willow clonal branches as cutting material. In some specific embodiments, the length of the cut branches can be 3.5 m, 4 m, 4.5 m, etc. After cutting the branches, the base of the branches is tapered to facilitate insertion into the soil. Then, a slanted cut is made at the base of the branches to increase the rooting area.
[0049] S200, select planting areas in seasonally flooded areas.
[0050] In some embodiments, the maximum flood depth of the selected planting area during the wet season is 1m-1.5m. This can be determined based on historical flooding data.
[0051] S300 prepares the planting area to form planting ridges and drills planting holes on the planting ridges according to the preset planting density.
[0052] As an optional embodiment, the steps of preparing the planting area to form planting ridges and drilling planting holes in the planting ridges according to a preset planting density include: constructing planting ridges 20-40cm above the ground surface in the planting area. In some specific embodiments, the height of the planting ridges above the ground surface can be 20cm, 25cm, 30cm, 35cm, 40cm, etc. Drainage ditches with a depth of 20-40cm are dug between the planting ridges. In some specific embodiments, the depth of the drainage ditches can be 20cm, 25cm, 30cm, 35cm, 40cm, etc. After the land preparation is completed, vertical planting holes with a depth of 40cm are drilled in the planting ridges using wooden stakes at a plant spacing of 3m × 6m.
[0053] The raised-ridge, deep-furrow method facilitates rapid drainage of flooded areas, reducing the time willow cuttings are submerged. The raised ridges also increase the planting height of willow cuttings to some extent, further reducing the depth of submersion. Furthermore, the soil in flooded flooded areas is generally compacted; raising the ridges loosens the soil, increases air content, and promotes root respiration in the willow cuttings.
[0054] S400, prepare the sleeve and insert the sleeve and the willow cutting into the planting hole, so that the sleeve is fitted onto the willow cutting.
[0055] refer to Figure 4 In this embodiment, the sleeve and the willow cutting are inserted into the planting hole, with the sleeve covering the willow cutting. By using the sleeve as a temporary protective cover, the contact channel between aquatic organisms and the base of the seedling is effectively blocked, preventing the base of the willow cutting from being eaten by aquatic animals and causing the plant to die. In addition, the sleeve also prevents the willow cutting from being directly washed by water, preventing the willow cutting from falling over or breaking.
[0056] As an optional implementation, a PVC pipe with an inner diameter of 4-6 cm and a length of not less than 35 cm can be selected and inserted axially into the planting hole for 5-10 cm. Then, a willow cutting is inserted through the PVC pipe into the planting hole. The depth of insertion of the willow cutting into the planting hole is not less than 50 cm, forming a gap of 1.5-2.5 cm between the willow cutting and the inner wall of the PVC pipe. In some specific embodiments, the depth of insertion of the PVC pipe into the planting hole can be 5 cm, 6 cm, 7 cm, 8 cm, 9 cm, 10 cm, etc.; the depth of insertion of the willow cutting into the planting hole can be 50 cm, 53 cm, 55 cm, etc. This method, using a PVC pipe of not less than 35 cm axially inserted into the planting hole for 5-10 cm, combined with high ridges and deep furrows, can cope with seasonal flooding along the Yangtze River. In this embodiment, as the water level of the beach changes, the PVC pipe at the base of the willow cutting is eroded by the water flow. A 1.5 to 2.5 cm gap is formed between the willow cutting and the inner wall of the PVC pipe to prevent the scouring force of the PVC pipe from directly acting on the willow cutting. The PVC pipe is inserted into the planting hole to a shallower depth than the willow cutting, which prevents the PVC pipe from tilting and causing the willow cutting to fall over.
[0057] refer to Figure 3 In another alternative implementation, the process of inserting the sleeve and the willow cutting into the planting hole can be as follows: first, the PVC pipe is put over the willow cutting, and then the willow cutting and the PVC pipe are inserted into the planting hole together.
[0058] In some embodiments, after inserting the sleeve and willow cutting into the planting hole, sufficient water is poured in several times along the gap between the sleeve and the willow cutting. After the water has fully penetrated, the soil is backfilled and compacted to ensure close contact between the soil and the cutting.
[0059] For S500, during the dry season, the casing should be removed and the soil compacted.
[0060] refer to Figure 5 During the dry season of that year, the willow cuttings had largely grown into tree shape, and the bark at the base had developed resistance to gnawage. At this point, the casing could be removed. In some embodiments, the casing is a PVC pipe. The steps for removing the PVC pipe include: first, pulling the PVC pipe vertically upwards out of the soil; then, using an angle grinder to cut symmetrically along the longitudinal direction of the casing before removing it. Care should be taken during this process to avoid damaging the tree trunk. (Reference) Figure 5 After removing the sleeve, re-soil the base of the tree trunk and tamp it down. After tamping down the soil, a protective mound of soil 10-15cm higher than the surrounding area can be formed at the base of the tree trunk.
[0061] To facilitate understanding by those skilled in the art, the above technical solutions are illustrated below with specific embodiments.
[0062] Example 1
[0063] On March 10, healthy branches of the clonal willow J549 were selected, and 4m long willow cuttings were taken. The base of the willow cuttings was cut at an angle.
[0064] Select planting areas in seasonally flooded areas along the Yangtze River and construct planting ridges 30cm above the riverbed. Dig drainage ditches 30cm wide and 20cm deep between the planting ridges. Use wooden stakes to drill vertical planting holes 40cm deep on the planting ridges at a spacing of 3m x 6m.
[0065] Insert a 40cm long, 5cm inner diameter PVC pipe 5cm into the planting hole, then insert the willow branch into the planting hole to a depth of 50cm, leaving a 2cm gap between the PVC pipe and the willow branch. Water thoroughly with clean water in several applications along the gap between the PVC pipe and the willow branch. After the water has completely soaked in, backfill with soil and tamp it down.
[0066] On November 20th of that year, the PVC pipe was pulled out and symmetrically cut and removed using an angle grinder. After the PVC pipe was removed, the soil was re-covered and compacted, forming a protective mound 10cm higher than the surrounding area at the base of the tree trunk.
[0067] like Figure 7 As shown, the survival rate of the tree trunks planted through the above-described embodiments reached 96%, and no evidence of the trunk base being eaten was found.
[0068] Example 2
[0069] On March 20, healthy branches of the clonal willow J549 were selected, and 3.5m long willow cuttings were taken. The base of the willow cuttings was cut at an angle.
[0070] Select planting areas in seasonally flooded areas along the Yangtze River and construct planting ridges 20cm above the riverbed. Dig drainage ditches 35cm wide and 30cm deep between the planting ridges. Use wooden stakes to drill vertical planting holes 40cm deep on the planting ridges at a spacing of 3m x 6m.
[0071] Insert a 35cm long, 4cm inner diameter PVC pipe 8cm into the planting hole, then insert the willow branch into the planting hole to a depth of 52cm, leaving a 1.5cm gap between the PVC pipe and the willow branch. Water thoroughly with sufficient water in several applications along the gap between the PVC pipe and the willow branch. After the water has completely soaked in, backfill with soil and tamp it down.
[0072] On November 30th of that year, the PVC pipe was pulled out and symmetrically cut and removed using an angle grinder. After the PVC pipe was removed, the soil was re-covered and compacted, forming a protective mound 12cm higher than the surrounding area at the base of the tree trunk.
[0073] Example 3
[0074] On March 18, healthy branches of the clonal willow J549 were selected, and 4.5m long willow cuttings were taken. The base of the willow cuttings was cut at an angle.
[0075] Select planting areas in seasonally flooded areas along the Yangtze River and construct planting ridges 40cm above the riverbed. Dig drainage ditches 30cm wide and 40cm deep between the planting ridges. Use wooden stakes to drill vertical planting holes 40cm deep on the planting ridges at a spacing of 3m x 6m.
[0076] Insert a 45cm long, 6cm inner diameter PVC pipe 10cm into the planting hole, then insert the willow branch into the planting hole to a depth of 55cm, leaving a 2.5cm gap between the PVC pipe and the willow branch. Water thoroughly with clean water in several applications along the gap between the PVC pipe and the willow branch. After the water has completely soaked in, backfill with soil and tamp it down.
[0077] On November 30th of that year, the PVC pipe was pulled out and symmetrically cut and removed using an angle grinder. After the PVC pipe was removed, the soil was re-covered and compacted, forming a protective mound 15cm higher than the surrounding area at the base of the tree trunk.
[0078] The above description is only a preferred embodiment of this application. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of this disclosure / application, and these improvements and modifications should also be considered within the protection scope of this disclosure / application.
Claims
1. A method for afforesting a seasonal floodplain with a tree of the genus Salix, characterized in that, The method comprises the following steps: preparing a tree willow stick; selecting a planting area on a seasonally flooded beach; preparing the planting area to form a planting ridge and planting holes on the planting ridge according to a preset planting density; preparing a sleeve and inserting the sleeve and the tree willow stick into the planting hole, so that the sleeve is sleeved on the tree willow stick; removing the sleeve in the dry season and tamping the soil.
2. The method for afforesting the seasonal flood land with the tree willow stick according to claim 1, characterized in that, The step of preparing a tree willow stick comprises: selecting a tree willow clone branch suitable for afforestation on a beach in the spring afforestation season; cutting the branch to a length of 3.5-4.5 m and a diameter of 2.0-3.5 cm; tapering the base of the branch and cutting a bevel to obtain the tree willow stick.
3. The method for afforesting the seasonal flood land with the tree willow stick according to claim 1, characterized in that, The step of preparing the planting area comprises: building a planting ridge on the planting area, which is 20-40 cm higher than the beach; digging a drainage ditch between the planting ridges, which is 20-40 cm deep.
4. The method for afforesting the seasonal flood land with the tree of willow according to claim 3, characterized in that, The step of planting holes on the planting ridge according to a preset planting density comprises: planting holes with a depth of 40 cm on the planting ridge at a spacing of 3 m × 6 m.
5. The method for populating a seasonal flood plain with tree(s) by planting willow wands according to claim 1, wherein, In step 3, the inner diameter of the sleeve is 4-6 cm, the length is not less than 35 cm, the depth of the sleeve inserted into the planting hole is 5-10 cm, the depth of the tree willow stick inserted into the planting hole is not less than 50 cm, and a gap of 1.5-2.5 cm is formed between the tree willow stick and the inner wall of the sleeve.
6. The method for afforesting the seasonal flood land with the tree willow according to claim 5, characterized in that, After step 3 and before step 4, it further comprises: irrigating water along the gap, covering the soil after the irrigated water is fully infiltrated, and tamping the soil.
7. The method for populating a seasonal flood plain with tree(s) by planting willow wands according to claim 1, wherein, The step of inserting the sleeve and the tree willow stick into the planting hole comprises the steps of: axially inserting the sleeve into the planting hole; inserting the tree willow stick into the soil through the sleeve.
8. The method for populating a seasonal flood plain with tree(s) by planting willow wands according to claim 1, wherein, The sleeve is a PVC pipe.
9. The method for afforesting the seasonal flood land with the tree of willow according to claim 9, characterized in that, The step of removing the sleeve comprises: pulling the sleeve vertically upward out of the soil; using an angle grinder to cut the sleeve symmetrically in the longitudinal direction and then removing the sleeve.
10. The method for populating a seasonal flood plain with tree(s) by planting willow wands according to claim 1, wherein, In step 4, a soil pile 10-15 cm higher than the surrounding soil is formed at the base of the tree trunk after tamping the soil.