Slow-release conservation blanket for recovering field seeds of plants in cold and arid regions

Abstract

The invention relates to a field seed slow-release conservation blanket for plant recovery in a cold and arid region. The slow-release conservation blanket is composed of a plurality of frames which are arranged on a substrate and connected together and are internally provided with conservation holes. The surfaces of the conservation holes are covered with degradable films, seeds and water retention particles are arranged in the conservation holes, and the holes are filled with a mixture of soil and fertilizer; dense water dripping holes are formed in the degradable thin film. The slow-release conservation blanket is easy to process, transport and lay, can effectively improve the germination rate and survival rate of seeds in a severe environment, and is suitable for field large-scale vegetation recovery operation in vast cold and arid regions. And engineering application of'recovery after laying 'can be realized.

Description

Technical Field

[0001] The present invention relates to the fields of ecological restoration and agricultural technology, and particularly to a wild seed slow-release conservation blanket for plant restoration in cold and arid regions. Background Art

[0002] Vegetation degradation in cold and arid regions is a common phenomenon in China, seriously affecting the stability of the ecosystem and biodiversity. Direct seeding of cold- and drought-tolerant grass seeds can quickly restore coverage. However, under field site conditions, due to factors such as difficult mechanical tillage (such as in mountainous areas), lack of irrigation water source, difficult soil water retention, low field temperature, and poor soil fertility, direct seeding is difficult to implement or the seed germination rate is extremely low, making the vegetation restoration process slow and the effect difficult to guarantee. Summary of the Invention

[0003] The technical problem to be solved by the present invention is to provide a wild seed slow-release conservation blanket for plant restoration in cold and arid regions that can improve the germination rate and survival rate of seeds in harsh environments.

[0004] To solve the above problems, a wild seed slow-release conservation blanket for plant restoration in cold and arid regions of the present invention is characterized in that: the slow-release conservation blanket is composed of a plurality of connected frames with conservation holes arranged on a base; the surface of the conservation holes is covered with a degradable film, seeds and water-retaining particles are arranged inside, and the pores are filled with a mixture of soil and fertilizer; the degradable film is provided with dense water-dripping holes.

[0005] The aperture of the conservation holes matches the size and growth habit of the seeds.

[0006] The number of seeds in each conservation hole matches the seed characteristics and the expected vegetation density.

[0007] The water-retaining particles are potassium polyacrylate with a water absorption of 60%.

[0008] In the mixture of soil and fertilizer, the mass ratio of soil to fertilizer is 5:1 to 10:1.

[0009] A preparation method of the wild seed slow-release conservation blanket for plant restoration in cold and arid regions as described above is characterized in that: first, a base is processed from crushed straw materials in cooperation with a blanket-shaped mold; then, frames are evenly arranged on the base, and conservation holes are arranged inside the frames; secondly, seeds and water-retaining particles are placed in the conservation holes, and the pores are filled with a mixture of soil and fertilizer; finally, a degradable film provided with dense water-dripping holes is covered by hot pressing and compounding.

[0010] The present invention has the following advantages compared with the prior art: 1. Increase soil temperature: The present invention uses film covering to increase the daytime temperature of the conservation holes by about 3°C and reduce the temperature difference by 2-3°C at night. At the same time, there are dense water dripping holes on the film, which will reduce the temperature increase amplitude. The density of the water dripping holes on the film is the result of the balance between the requirements of temperature increase and water collection.

[0011] 2. Improve soil humidity: The present invention adds water-retaining particles, which can continuously supply water for about 15 days. Combined with the collection of precipitation by the water dripping holes, the soil humidity is increased by about 5%, effectively maintaining the humidity required for seed germination.

[0012] 3. Environmentally friendly and low cost: The present invention uses inexpensive and environmentally friendly materials such as crushed straw to make the base, reducing the cost of vegetation restoration. Using the slow-release conservation blanket described in the present invention, the cost per mu is reduced by about 30% compared with manual sowing.

[0013] 4. Good stability: The present invention takes measures such as fixing around the conservation blanket and covering the surface with soil, combined with the weight of the soil and fertilizer mixture in the holes, to improve the stability of the conservation blanket under bad weather conditions, reduce the damage and displacement of the conservation blanket caused by strong winds, etc., and ensure the smooth progress of the vegetation restoration work.

[0014] 5. Simple operation: The slow-release conservation blanket described in the present invention is easy to process, transport and lay, without complex mechanical equipment and cumbersome processes, and is suitable for large-scale vegetation restoration operations in the wild in vast cold and arid regions. It can achieve the engineering application of "laying and restoring". Description of the drawings

[0015] The following further describes in detail the specific embodiments of the present invention with reference to the drawings.

[0016] Figure 1 It is a top view schematic diagram of the seed slow-release conservation blanket of the present invention.

[0017] Figure 2 It is a structural illustration of the conservation hole of the present invention.

[0018] In the figure: 1 - conservation hole; 2 - border; 3 - degradable film; 4 - seeds; 5 - water-retaining particles; 6 - mixture of soil and fertilizer; 7 - water dripping hole. Specific embodiments

[0019] As Figures 1 - 2 shown, a seed slow-release conservation blanket for plant restoration in cold and arid regions, the slow-release conservation blanket is composed of a border 2 with a plurality of connected conservation holes 1 arranged on a base; the surface of the conservation hole 1 is covered with a degradable film 3, and seeds 4 and water-retaining particles 5 are arranged inside, and the pores are filled with a mixture 6 of soil and fertilizer; the degradable film 3 is provided with dense water dripping holes 7.

[0020] Among them: The aperture of the conservation hole 1 matches the size and growth habit of the seeds 4.

[0021] The number of seeds 4 in each conservation hole 1 matches the seed characteristics and the expected vegetation density.

[0022] The water-retaining particles 5 are potassium polyacrylate with a water absorption of 60%. It is in a water-absorbing state and can continuously provide slow-release moisture for the seeds.

[0023] In the mixture 6 of soil and fertilizer, the mass ratio of soil to fertilizer (g / g) is 5:1 to 10:1. The soil is peat soil (this type of soil is rich in nitrogen and has the characteristics of high absorption and exchange performance, and is very suitable as the soil texture for seed germination), and the fertilizer is organic fertilizer - sheep manure, whose organic matter content reaches 25%-30%, and the nitrogen, phosphorus and potassium ratio is balanced (about 1:0.7:0.8). On the one hand, this mixture 6 of soil and fertilizer provides a carrier and nutrients for seed germination, and at the same time, a certain weight can prevent the conservation blanket from being damaged or moved due to extreme weather such as strong winds.

[0024] In the present invention, the degradable film 3 can moderately increase the temperature inside the hole, prevent the evaporation of moisture inside the hole, and at the same time, the water-dripping holes 7 on the degradable film 3 can collect natural precipitation and improve the ventilation environment inside the hole.

[0025] In the present invention, the base is processed from crushed straw with a mold, which is low-cost and environmentally friendly. Under completely dry conditions, the base has a certain mechanical toughness and strength. When placed in the wild environment, when encountering rainfall or the ground has a daily and nightly cycle of moisture return, its mechanical structure will naturally collapse and disintegrate in about 15 - 45 days. At this time, the well-developed seeds 4 can take root in the ground. The degradable film 3, water-retaining particles 5, and fertilizer can provide temperature increase, water retention, and nutrient nourishment throughout the plant growth cycle.

[0026] In the present invention, the seeds 4 are cold and drought-resistant grass seeds, which are selected according to the vegetation type and ecological needs of the target area to ensure that the quality and germination rate of the seeds 4 meet the requirements.

[0027] A preparation method of a wild seed slow-release conservation blanket for plant restoration in cold and arid regions: First, use the crushed straw material with a blanket-shaped mold to process the base through processes such as heating and pressing; then evenly arrange the frame 2 on the base and set the conservation holes 1 inside the frame 2; secondly, place the seeds 4 and water-retaining particles 5 in the conservation holes 1. The water-retaining particles 5 are pre-absorbed with 60% of water, which can support the seeds to germinate without precipitation for 15 days, making them fully absorb water and expand, filling part of the pores. And fill the pores with the mixture 6 of soil and fertilizer; gently compact to ensure that the seeds are in full contact with the soil, and at the same time ensure the air permeability and water retention of the mixture. Finally, cover and lay the degradable film 3 with dense water-dripping holes 7 through hot pressing rollers.

[0028] In order to ensure the quality and performance of the substrate, the particle size of the crushed straw material must be uniform.

[0029] During the production process, the size and shape of the mold must be precisely controlled to form uniform breeding holes 1 and frame 2. The width and height of the frame 2 should be reasonably designed to ensure the overall structural stability of the base and the protection of the seeds 4.

[0030] After processing, the slow-release nursery blanket can be rolled lengthwise for easier transport. Once the blanket is transported to the target area, it can be laid directly in the area where vegetation is to be restored and then awaited for germination. To prevent wind damage to the nursery blanket, simply secure the blanket around the edges and cover it with soil. However, avoid excessive soiling, as this can affect seed germination.

[0031] The experimental example takes the slow-release nursery blanket of the present invention as an example to conduct a comparative test, and the nursery holes are independent nursery holes (preliminary experiments before the development of the nursery blanket). The embodiment, comparative example 1 and comparative example 2 all have 10 nursery holes of the same size and material.

[0032] Among them: the slow-release conservation blanket is 1.48 m to 1.51 m long, 0.95 m to 1.05 m wide, 4.5 cm to 5.5 cm thick, and weighs 20 kg to 25 kg; the diameter of the conservation hole 1 is 4.5 cm; the seeds 4 are dangling dung grass or purple needle grass, and 10 to 25 seeds are added to each conservation hole 1 (because the seeds are filled into the conservation hole by broadcasting, they are usually not very uniform); the water-retaining particles 5 are potassium polyacrylate particles, with irregular particles, generally about 0.1 mm in diameter, and a water absorption expansion coefficient of >200. Generally, 3 to 5 water-retaining particles are placed in a single conservation hole; the soil and fertilizer mixture 6 contains about 30 g of soil and 3 g to 6 g of fertilizer, the soil is peat soil, and the fertilizer is organic fertilizer sheep manure; the hole diameter of the drip hole 7 is 3.5 mm.

[0033] At the same time, a control group was set up: in comparative example 1, the water-retaining particles 5 were contained in the nursery holes 1 but no film was covered; in comparative example 2, the water-retaining particles 5 were not contained in the nursery holes 1 but a film was covered; traditional sowing was done by direct broadcasting followed by covering with soil.

[0034]

Test soil moisture and seed germination rate

[0035] The seed germination rate was determined by sampling inspection. The number of seeds in each test group was 100, and the calculation formula is as follows: The results are shown in Table 1.

[0036] Table 1 Test results of seed germination rate and soil humidity after 15 days As can be seen from Table 1, under the combined action of the film and the water-retaining particles, the slow-release conservation blanket described in the present invention improves the seed germination rate compared with the control group.

Claims

1. A field seed slow-release conservation blanket for plant restoration in cold and arid regions, characterized in that: The slow-release conservation blanket is composed of a plurality of connected frames (2) with conservation holes (1) arranged on a base; the surface of the conservation holes (1) is covered with a degradable film (3), seeds (4) and water-retaining particles (5) are arranged inside, and the pores are filled with a mixture of soil and fertilizer (6); the degradable film (3) is provided with dense water-dripping holes (7).

2. The slow-release conservation blanket for wild seeds for plant restoration in cold and arid regions according to claim 1, characterized in that: The aperture of the conservation holes (1) matches the size and growth habit of the seeds (4).

3. The wild seed slow-release conservation blanket for plant restoration in cold and arid regions according to claim 2, characterized in that: The number of the seeds (4) in each conservation hole (1) matches the seed characteristics and the expected vegetation density.

4. The slow-release conservation blanket for wild seeds for plant restoration in cold and arid regions according to claim 1, wherein: The water-retaining particles (5) are potassium polyacrylate with a water absorption of 60%.

5. The slow-release conservation blanket for wild seeds for plant restoration in cold and arid regions according to claim 1, characterized in that: In the mixture of soil and fertilizer (6), the mass ratio of soil to fertilizer is 5:1 to 10:

1.

6. The preparation method of a slow-release conservation blanket for wild seeds for plant restoration in cold and arid regions according to claim 1, characterized in that: First, a base is processed from crushed straw materials in cooperation with a blanket-shaped mold; then, the frames (2) are evenly arranged on the base, and the conservation holes (1) are arranged inside the frames (2); secondly, seeds (4) and water-retaining particles (5) are placed in the conservation holes (1), and the pores are filled with a mixture of soil and fertilizer (6); finally, a degradable film (3) provided with dense water-dripping holes (7) is covered and arranged by hot pressing rollers.

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