Degradable hypha mulching film and preparation method thereof

Abstract

The invention discloses a degradable hypha mulching film and a preparation method thereof, and belongs to the field of agricultural mulching materials, and the degradable hypha mulching film is composed of hypha layers and a hypha cross-linking layer clamped between the hypha layers. The mushroom hypha mulching film is prepared by utilizing the characteristics of adhesion, water resistance and heat preservation of mushroom hyphae, and the method specifically comprises the following steps: culturing mushroom liquid strains, spraying the mushroom liquid strains onto plant fiber paper by taking the plant fiber paper as a bottom film, and degrading lignin and cellulose of the fiber paper by the hyphae to form a hypha cross-linked film, so as to prepare the mushroom hypha mulching film. The film has the basic characteristics of a mulching film, the prepared hypha mulching film has the characteristic of being naturally degraded after the crop growth cycle ends, and no residual matter is left in the soil environment in the degradation process. After the mulching film is degraded, the soil fertility can be effectively improved, the physicochemical properties and biological characteristics of soil can be improved, the problem of environmental pollution caused by the use of a traditional mulching film is further reduced, and powerful support is provided for sustainable development of agricultural production.

Description

Technical Field

[0001] The present invention relates to a ground film and a preparation method thereof, in particular to a degradable mycelium ground film and a preparation method thereof. Background Art

[0002] In the field of agricultural production, mulching technology is one of the simplest and most effective new technologies in modern agriculture. Through specific physical barriers, mulching effectively regulates soil temperature, providing excellent insulation. In terms of water management, mulching can significantly reduce soil evaporation, thereby conserving water. Furthermore, mulching plays an important role in light regulation, weed suppression, and soil salinity control. Traditional agricultural mulch widely used in my country is primarily plastic. Plastic mulch, primarily composed of polyethylene, degrades very slowly in soil, typically taking 200 to 300 years to degrade naturally. The long-term accumulation of its residues in the soil disrupts the normal structure and function of soil microbial communities, inhibiting the transformation and recycling of nutrients in the soil. This can also lead to a decline in soil fertility and crop quality, resulting in serious environmental pollution. In recent years, the use of biodegradable mulch to replace traditional plastic mulch has become a research focus.

[0003] Some countries are exploring new mulch materials, such as paper and plant-based mulch, to replace traditional plastic mulch. Currently, Europe and the United States have begun to use biodegradable mulch on a large scale to reduce soil and water pollution. Biodegradable mulch provides essential protection during the growing season and degrades naturally after the crop is grown, without causing long-term impacts on soil and water. As an environmentally friendly agricultural production material, fully biodegradable mulch has a broad market potential. Therefore, the development of a biodegradable mycelium mulch that is both environmentally friendly and economical is of great significance. Summary of the Invention

[0004] The purpose of the present invention is to provide a degradable mycelium mulch film and a preparation method thereof, so as to solve the problem that traditional mulch films are difficult to degrade and easily cause pollution to the environment.

[0005] To achieve the above-mentioned object, one aspect of the present invention provides a degradable mycelium mulch film, which is composed of a mycelium layer and a mycelium glue layer sandwiched between the mycelium layers.

[0006] Another aspect of the present invention provides a method for preparing the above-mentioned degradable mycelium mulch film, comprising the steps of:

[0007] a: Cultivate liquid mushroom spawn;

[0008] b: Use plant fiber paper as the base film and place it in the air;

[0009] c. Spraying the mushroom spawn taken out in step a onto the plant fiber membrane;

[0010] d: Mushroom mycelium degrades plant fiber paper, forming a mycelium fiber glue layer;

[0011] e: Degradable mycelium mulch film is produced after cultivation.

[0012] Furthermore, in step a, the liquid culture medium formula of the mushroom liquid spawn is: 15-20 parts of brown sugar, 15-20 parts of corn flour, 15-20 parts of potato flour, 3 parts of yeast powder, 0.7-0.8 parts of magnesium sulfate, 1.5 parts of potassium dihydrogen phosphate, and 0.1 parts of vitamin B1; the culture conditions are: 25° C., 120 r / min, and shake flask culture for 8 days to 10 days.

[0013] Furthermore, in step c, the density of the sprayed mushroom mycelium balls is 9.32 g / L.

[0014] Furthermore, in step e, the culture conditions of the degradable mycelium mulch film are 25° C. and the culture time is 2 days to 3 days.

[0015] In summary, the present invention has the following beneficial effects compared to the prior art:

[0016] The present invention utilizes the adhesive, waterproof and heat-insulating properties of mushroom mycelium to produce a mushroom mycelium mulch film. The mulch film can naturally degrade after the crop growth is completed without any residue, reducing environmental pollution. It has advantages that traditional mulch films do not have. After degradation, the mycelium mulch film can improve soil fertility, help degrade crop residues, and prepare mushroom residue fertilizer and feed; crop residues can also be used to produce mushrooms, and the residues after degradation of the mycelium mulch film can be eaten by livestock without causing harm to the livestock. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 This is a schematic diagram of the morphology of mycelial mulch;

[0019] Figure 2 This is a flow chart for the preparation of mycelium mulch.

[0020] The above drawings include the following reference numerals:

[0021] 1. Mycelial layer; 2. Mycelial glue layer. DETAILED DESCRIPTION

[0022] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments of the present invention can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0023] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form can also include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0024] Unless otherwise specifically stated, the relative arrangement of the parts and steps, numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to actual proportional relationships. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorized specification. In all examples shown and discussed herein, any specific values should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0025] See also Figure 1 As shown, the present invention provides a degradable mycelium mulch film, which is composed of a mycelium layer 1 and a mycelium glue layer 2 sandwiched between the mycelium layer 1. Figure 2 As shown, another aspect of the present invention provides a method for preparing a degradable mycelium mulch film, comprising the steps of:

[0026] a: Use liquid culture medium to culture mushroom liquid spawn;

[0027] b: Use plant fiber paper as the base film and place it in the air;

[0028] c. Spraying the mushroom spawn taken out in step a onto the plant fiber membrane;

[0029] d: Mushroom mycelium degrades plant fiber paper, forming a mycelium fiber glue layer;

[0030] e: Degradable mycelium mulch film is produced after cultivation.

[0031] Preferably, in step a, the liquid culture medium of the mushroom liquid spawn is formulated as follows: 15-20 parts of brown sugar, 15-20 parts of corn flour, 15-20 parts of potato flour, 3 parts of yeast powder, 0.7-0.8 parts of magnesium sulfate, 1.5 parts of potassium dihydrogen phosphate, and 0.1 parts of vitamin B1; and the culture conditions are: 25° C., 120 rpm, and shake flask culture for 8-10 days.

[0032] As a preference, in step c, the density of the sprayed mushroom mycelium pellets is 9.32 g / L.

[0033] As a preference, in step e, the culture conditions of the degradable mycelium mulch film are 25° C. and 2-3 days.

[0034] Example 1: A degradable mycelium mulch film and a preparation method thereof, consisting of a mycelium layer, a mycelium fiber bonding layer and a mycelium layer, specifically comprising the following steps: cultivating liquid mushroom spawn, using plant fiber paper as a base film, spraying the mushroom spawn on the plant fiber film, allowing the mushroom mycelium to degrade the plant fiber paper to form a mycelium fiber bonding layer, and obtaining a degradable mycelium mulch film after cultivation.

[0035] In this embodiment, the formula of the mushroom liquid spawn culture medium is 15-20 parts of brown sugar, 15-20 parts of corn flour, 15-20 parts of potato flour, 3 parts of yeast powder, 0.7-0.8 parts of magnesium sulfate, 1.5 parts of potassium dihydrogen phosphate, and 0.1 parts of vitamin B1.

[0036] In this embodiment, the liquid mushroom spawn culture conditions are 25° C., 120 r / min, and shake flask culture for 8-10 days.

[0037] Example 2: The difference between this example and the other examples is that the liquid culture medium formula comprises the following ingredients: 15 parts of brown sugar, 3 parts of yeast powder, 15 parts of potato flour, 15 parts of corn flour, 0.7 parts of magnesium sulfate, 1.5 parts of potassium hydrogen phosphate, and 0.1 parts of vitamins.

[0038] Example 3: The difference between this example and the other examples is that the formula components described in this example are: 20 parts of brown sugar, 3 parts of yeast powder, 20 parts of potato flour, 20 parts of corn flour, 0.8 parts of magnesium sulfate, 1.5 parts of potassium hydrogen phosphate, and 0.1 parts of vitamins.

[0039] Application Example 1:

[0040] The mycelium mulch film prepared in Example 1 was used for actual test field tests, where degradable mycelium mulch film and plastic mulch film were laid respectively, and a control experiment was conducted with open-air land.

[0041] Use a temperature meter to measure the soil temperature at the surface and 5 cm below the soil away from the seeds daily. Use a humidity meter to measure the soil moisture at the surface, 5 cm below the soil, and 10 cm below the soil. Irrigate the soil with water before starting. Bury the mycelial mulch and plastic film in the same soil environment and observe the degradation of the mulch every month.

[0042] (3) According to the test, the surface temperature of the mycelium mulch is 6℃ higher than that of the unlaid mulch and 2℃ lower than that of the plastic mulch on average; the surface soil moisture of the mycelium mulch decreases more slowly than that of the open-air soil, and the moisture retention performance of the mycelium mulch is better as the soil depth increases; the mycelium mulch is basically completely degraded after being buried in the soil for 3-6 months.

[0043] Application Example 2:

[0044] (1) The mycelium mulch prepared in Example 1 was used in a corn pot test. The mycelium mulch was laid and the effect of the mycelium mulch on the soil microbial community was measured.

[0045] (2) Biodegradable mulch significantly increased the nitrogen content in the soil in the initial stage of addition, but had a certain inhibitory effect on soil pH and organic matter content.

[0046] (3) After the degradation of the mulch film, the soil pH and organic matter content increased significantly, and the soil enzyme activity increased, indicating that the degradation of the mulch film improved the soil environment and the coverage of the mycelial mulch film changed the soil microbial community.

[0047] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A degradable mycelium mulch film, characterized in that: It consists of a mycelium layer (1) and a mycelium glue layer (2) sandwiched between the mycelium layer (1).

2. A method for preparing a degradable mycelium mulch film, which is used to prepare the degradable mycelium mulch film according to claim 1, characterized in that: Including steps: a: Cultivate liquid mushroom spawn; b: Use plant fiber paper as the base film and place it in the air; c. Spraying the mushroom spawn taken out in step a onto the plant fiber membrane; d: Mushroom mycelium degrades plant fiber paper, forming a mycelium fiber glue layer; e: Degradable mycelium mulch film is produced after cultivation.

3. The method for preparing the degradable mycelium mulch film according to claim 2, characterized in that: In step a, the liquid culture medium of the mushroom liquid spawn is formulated as follows: 15-20 parts of brown sugar, 15-20 parts of corn flour, 15-20 parts of potato flour, 3 parts of yeast powder, 0.7-0.8 parts of magnesium sulfate, 1.5 parts of potassium dihydrogen phosphate, and 0.1 parts of vitamin B1; and the culture conditions are: 25° C., 120 rpm, and shake flask culture for 8-10 days.

4. The method for preparing the degradable mycelium mulch film according to claim 2, wherein: In step c, the density of the sprayed mushroom mycelium balls was 9.32 g / L.

5. The method for preparing the degradable mycelium mulch film according to claim 2, characterized in that: In step e, the culture conditions of the degradable mycelium mulch film are 25° C. and the culture time is 2 days to 3 days.

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