Anti-storm cultivation device for mangrove seedlings and integrated cultivation method of anti-storm cultivation device

Abstract

The storm-resistant cultivation device comprises a barrel-shaped degradable nutrition cup, an opening is formed in the upper end of the nutrition cup, a cavity is formed in the nutrition cup, multiple sets of drainage holes are formed in the bottom of the nutrition cup, and a cross-shaped wood supporting support is arranged in the cup body. According to the method, embryo pomelo seedlings are cultivated through the nutrition cups with holes in the bottoms, the supporting trees are embedded in the seedling forming process, the seedlings are transplanted into the mangrove forest shoal together with the nutrition cups to be planted after growing into small branches, the seedlings are combined with the embedded supporting trees along with the increase of the volume of the seedlings, and the whole body is firmer. Meanwhile, gradient drain holes are formed in the bottom of the nutrition cup to promote graded development of secondary root systems, and the nutrition cup is made of degradable materials and can protect the natural environment. The seedlings are subjected to tidal domestication before transplanting, so that the transplanted mangrove seedlings are higher in survival rate and higher in toppling resistance. The nutrition cup, the supporting wood and the sapling are integrated, and the labor cost is also saved.

Description

Technical Field

[0001] The invention relates to the technical field of coastal ecological restoration, and in particular to a wind and wave resistant cultivation device for mangrove seedlings and an integrated cultivation method thereof. Background Art

[0002] Traditional mangrove seedling cultivation uses ordinary nutrient cups to grow seedlings. First, prepare the nutrient cups, then grow the seedlings into embryos in the nutrient cups. After the seedlings grow into small branches, they are transplanted to the mangrove shoals and dug pits. Support wood is inserted on the left and right and fixed to the branches of the seedlings with ropes to help fix them and play a role in wave resistance and repairing waves. The traditional method has the following defects: the secondary fixation process is complicated, the steps are cumbersome, the process is cumbersome, and the labor cost is high. At the same time, the external floating wood is not tightly combined with the plant, the actual use effect is not good, and the ability to resist wind and waves is poor; the root system development is limited, it is time-consuming and labor-intensive, but the survival rate is only 45-60%, and the plastic bag straps are easy to cause environmental pollution. Summary of the invention

[0003] The technical problem to be solved by the present invention is that the traditional method has the following defects: the secondary fixing process is complicated, the steps are cumbersome, the process is cumbersome, the labor cost is high, and the external floating wood is not tightly combined with the plant, the actual use effect is not good, and the wind and wave resistance is poor; the root system development is limited, it is time-consuming and labor-intensive, but the survival rate is only 45-60%, and the plastic bag straps are easy to cause environmental pollution. In view of the above-mentioned defects of the prior art, a mangrove seedling wind and wave resistance cultivation device and an integrated cultivation method are provided.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A wind and wave resistant cultivation device for mangrove seedlings is constructed, comprising a barrel-shaped degradable nutrient cup, the upper end of the nutrient cup is open, the interior is a cavity, the bottom of the nutrient cup is provided with multiple groups of drainage holes, and the cup body is provided with a cross-shaped support wood bracket.

[0006] Preferably, a plurality of groups of aerial root induction holes are provided on the side of the nutrient cup, and the aerial root induction holes are evenly distributed on the side wall of the nutrient cup.

[0007] Preferably, the drainage holes are arranged in a gradient pattern, and the drainage holes are arranged in three layers of co-centric annular shapes, the diameters of the drainage holes in the inner and outer layers are 3 mm, and the diameter of the drainage holes in the middle layer is 5 mm.

[0008] Preferably, the lower end of the support pole bracket is 2 cm away from the bottom of the cup, and the upper end exceeds the cup mouth by 20-30 cm. The surface of the support pole bracket is coated with a biocompatible layer containing a plant growth regulator.

[0009] Preferably, the biocompatible layer is a 50 μm biofilm layer and a 20 μm growth regulator layer, and the surface of the nutrient cup body is provided with a degradable material layer, the degradable material layer is composed of polylactic acid and starch, and the ratio of polylactic acid to starch is 7:3.

[0010] A method for cultivating mangrove seedlings is constructed, wherein a supporting pole is embedded in the above-mentioned mangrove seedling wind and wave resistant cultivation device to cultivate the embryo pomelo, and then a matrix is ​​filled. After the embryo pomelo grows into a seedling and grows into small branches, it is transplanted to a mangrove shallow for planting, and the cultivation is completed after the supporting pole grows in volume and merges with the supporting pole.

[0011] Preferably, the process of transplanting the embryo pomelo into mangrove shallows for planting after the pomelo grows into saplings and small branches, further includes:

[0012] The saplings are tidally domesticated and after domestication are transplanted to mangrove shallows for planting.

[0013] Preferably, the tidal domestication uses a simulated tidal device to perform salinity gradient training, and during the tidal domestication, different salinity gradients are trained according to the salinity of the planting sea area, including a freshwater layer with a salinity of 0‰, a mixed layer with a salinity of 15‰, and a seawater layer with a salinity of 30‰.

[0014] The beneficial effects of the present invention are as follows: embryo pomelo seedlings are cultivated through a nutrient cup with holes at the bottom, and supporting wood is embedded in the process of seedling cultivation. After the seedlings grow small branches, they are transplanted together with the nutrient cups to the mangrove shallows for planting. As the volume of the seedlings increases, they are combined with the embedded supporting wood, making the whole more solid. At the same time, gradient drainage holes are set at the bottom of the nutrient cup to promote the graded development of the secondary root system, and the nutrient cup uses degradable materials to protect the natural environment. The seedlings are tidally domesticated before transplantation, so that the survival rate of the transplanted mangrove seedlings is higher and the anti-dumping ability is stronger. The nutrient cup and the supporting wood are integrated with the seedlings, which also saves labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. The drawings described below are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative work:

[0016] Figure 1 A schematic diagram of the cross-section structure of a cultivation device according to a preferred embodiment of the present invention;

[0017] Figure 2 Schematic diagram of the bottom structure of a cultivation device according to a preferred embodiment of the present invention. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the following will be described clearly and completely in combination with the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are partial embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work belong to the protection scope of the present invention.

[0019] A preferred embodiment of the present invention is a mangrove seedling wind and wave resistant cultivation device and an integrated cultivation method thereof; Figure 1-Figure 2 As shown, it includes a degradable nutrient cup 101, which is columnar, and can be conical barrel-shaped, cylindrical or elliptical, etc., wherein the upper opening of the nutrient cup is a cavity. A gradient drainage hole 102 is arranged at the bottom of the nutrient cup 101, and a cross-shaped support wood bracket 103 is embedded in the nutrient cup. The support wood bracket contains a biocompatible coating, and a bracket extension 105 is formed at the upper end of the bracket, and the bracket extension exceeds the cup mouth by 20-30cm. Aerial root induction holes 104 are arranged on the side wall of the nutrient cup, and the aperture of the aerial root induction holes is 3-5mm. The support wood bracket and the nutrient cup are designed to form a symbiosis between the support wood and the main root.

[0020] Specifically, Figure 1-Figure 2 As shown, the top diameter of the conical cup body is 12cm, the bottom diameter is 8cm, the height of the nutrient cup is 25cm, the wall of the nutrient cup has a 0.5mm degradable material layer, and the nutrient cup can be made of polylactic acid and starch materials, with a ratio of polylactic acid to starch of 7:3 to form a degradable nutrient cup. The drainage holes at the bottom of the nutrient cup are set in a gradient, with a total of three layers of drainage holes, and each layer of water outlet holes is distributed in a ring shape, with 3 holes in the inner ring, each group of holes with a diameter of 3mm, 6 holes in the middle ring, each group of holes with a diameter of 5mm, and 3 holes in the outer ring, each group of holes with a diameter of 3mm. The gradient drainage holes are set to allow the secondary root system near the bottom to develop in stages. The lower end of the cross-shaped support wood bracket is 2cm away from the bottom of the cup, and the upper end exceeds the cup mouth by 25cm±5cm, and the layers of the support wood bracket are a 50μm biofilm layer and a 20μm growth regulator layer.

[0021] Furthermore, the biodegradable cup body can be naturally decomposed in 6-8 months to protect the environment. At the same time, retaining the nutrient cup during transplanting can also avoid root damage and increase the survival rate.

[0022] When cultivating mangrove seedlings, the device first uses sodium alginate solution to soak the hypocotyl base to achieve hypocotyl pretreatment, and then vertically inserts the support into the cup body positioning groove to form a support bracket so that the support is embedded in the nutrient cup 101, and is fixed by the support bracket 103, so that the support grows together with the mangrove seedling, and the matrix can be filled into the nutrient cup, and the upper layer is filled with sandy loam and the lower layer is filled with silt matrix. And 3-5 tides and tides are simulated to carry out tidal training so that the aerial roots can adapt to the seawater environment in advance. After the seedlings grow into small branches, they are transplanted into the mangrove shoals, and the pits are directly planted after digging, and the reserved nutrient cups are directly buried in the planting holes, and the soil is covered and compacted. As the volume of the seedlings increases and is combined with the previously embedded support, the overall structure is more stable and firm. The improved method has simple steps, stronger wind and wave resistance, and a high survival rate. After actual planting tests using this method, the ability of grown mangrove seedlings to resist toppling increased by 2-3 times, and the survival rate increased to about 90%. At the same time, 65% of labor costs were saved, and the bonding strength between the bracket and the mainboard reached 3.2Mpa.

[0023] Furthermore, during tidal acclimation, a salinity gradient method is used, with three layers of salinity from the bottom of the pond to the bottom: 0‰ → 15‰ → 30‰, of which the freshwater layer connected to the water inlet is 0‰ salinity, the middle is a mixed layer with a salinity of 15‰, and the bottom is a seawater layer with a salinity of 30‰. Electronic sensors can be equipped to monitor the water level. The salinity is adjusted to the same salinity as the sea area in the planting area 30 days before leaving the nursery to ensure that the seedlings adapt to the salinity of the planting area.

[0024] It should be understood that the present invention is described by some embodiments, and those skilled in the art will appreciate that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A wind and wave resistant mangrove seedling cultivation device, comprising a barrel-shaped degradable nutrient cup, the upper end of which is open and the interior is a cavity, characterized in that: A plurality of drainage holes are arranged at the bottom of the nutrition cup, and a cross-shaped support bracket is arranged inside the cup.

2. The cultivation device according to claim 1, characterized in that: A plurality of groups of aerial root induction holes are arranged on the side of the nutrient cup, and the aerial root induction holes are evenly distributed on the side wall of the nutrient cup.

3. The cultivation device according to claim 1, characterized in that: The drainage holes are arranged in a gradient pattern, and are arranged in three layers of co-centric annular shapes. The diameters of the inner and outer drainage holes are 3 mm, and the diameter of the middle layer drainage holes is 5 mm.

4. The cultivation device according to claim 1, characterized in that: The lower end of the support wood bracket is 2 cm away from the bottom of the cup, and the upper end is 20-30 cm beyond the cup mouth. The surface of the support wood bracket is coated with a biocompatible layer containing a plant growth regulator.

5. The cultivation device according to claim 4, characterized in that: The biocompatible layer is a 50 μm biofilm layer and a 20 μm growth regulator layer. The surface of the nutrient cup body is provided with a degradable material layer, which is composed of polylactic acid and starch, and the ratio of polylactic acid to starch is 7:

3.

6. A method for cultivating mangrove seedlings, characterized in that: The supporting pole is embedded in a mangrove seedling wind and wave resistant cultivation device as described in any one of claims 1-5 to cultivate embryo pomelo, and then the matrix is ​​filled. After the embryo pomelo grows into a seedling and grows into small branches, it is transplanted to the mangrove shallows for planting. After the seedling grows, its base pole and the supporting pole are integrated into one, and the cultivation is completed.

7. The cultivation method according to claim 6, characterized in that: The process of transplanting the embryo pomelo into a mangrove shallow for planting after the pomelo grows into a seedling and a small branch also includes: The saplings are tidally domesticated and after domestication are transplanted to mangrove shallows for planting.

8. The cultivation method according to claim 7, characterized in that: The tidal domestication adopts a simulated tidal device to perform salinity gradient training. During the tidal domestication, different salinity gradients are trained according to the salinity of the planting sea area, including a freshwater layer with a salinity of 0‰, a mixed layer with a salinity of 15‰, and a seawater layer with a salinity of 30‰.

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