Isolation bag and method for preventing asparagus stem blight

Abstract

The invention provides an isolation bag for preventing asparagus stem blight and a method thereof, and relates to the field of asparagus stem blight prevention. The isolation bag for preventing the asparagus stem blight is prepared from the following components in percentage by weight: 40 to 50 percent of polyethylene, 20 to 30 percent of polypropylene, 5 to 10 percent of zinc oxide, 10 to 15 percent of cellulosic fiber, 5 to 10 percent of polytetrafluoroethylene microporous membrane and 2 to 5 percent of ultraviolet light absorber. The anti-aging performance and the mechanical strength of the material are remarkably improved through the isolation bag made of the multi-layer composite material, the bag can be used in the outdoor environment for a long time and is not prone to aging or damage by optimizing the proportion of polyethylene and polypropylene and adding the ultraviolet light absorber, and the service life is prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of preventing asparagus stem blight, in particular to an isolation bag for preventing asparagus stem blight and a method thereof. Background Art

[0002] Asparagus stem blight is a common disease that has a significant impact on the growth and yield of asparagus. In order to prevent this disease, an isolation bag system has been proposed. The system mainly includes a breathable, waterproof and antibacterial isolation bag, which is put on the asparagus stem to form a relatively closed environment to prevent the invasion of pathogens. The specific operation steps of this method are as follows: First, during the asparagus seedling stage or early growth stage, the customized isolation bag is tightly wrapped around the base of the asparagus stem. Secondly, the material of the bag should have good air permeability to ensure air circulation and avoid the growth of diseases caused by moisture accumulation. At the same time, the bag should also have a certain waterproof performance to avoid excessive entry of external moisture. Finally, the bag is regularly checked and replaced to ensure its integrity and functionality to achieve long-term prevention effects.

[0003] However, the installation and maintenance of isolation bags require a lot of manual work, especially in large-scale plantations, which increases production costs. The material of the bag may age or be damaged after long-term use, thus losing its protective function, which requires frequent replacement, which not only increases the difficulty of operation, but also easily causes environmental problems. The insufficient air permeability of the bag may cause excessive humidity in the stem, which in turn promotes the occurrence of other diseases. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies in the prior art, the present invention provides an isolation bag and method for preventing asparagus stem blight, which solves the problem that the bag material may age or be damaged after long-term use; and the bag's insufficient air permeability may cause excessive humidity in the stem, which in turn promotes the occurrence of other diseases.

[0006] (II) Technical solution

[0007] To achieve the above purpose, the present invention is implemented through the following technical scheme: an isolation bag for preventing asparagus stem blight, comprising the following components and their weight percentages: polyethylene: 40-50%, polypropylene: 20-30%, zinc oxide: 5-10%, cellulose fiber: 10-15%, polytetrafluoroethylene microporous membrane: 5-10%, ultraviolet absorber: 2-5%, the polyethylene and polypropylene layers provide the mechanical strength, wear resistance and aging resistance of the bag, and can maintain the integrity of the structure during long-term use; zinc oxide, as a broad-spectrum antibacterial agent, can effectively inhibit the growth of various pathogenic microorganisms and reduce the occurrence of stem blight; cellulose fiber helps to regulate the humidity in the bag body through its natural hygroscopicity to avoid inducing other diseases due to excessive moisture; the polytetrafluoroethylene microporous membrane provides excellent air permeability for the bag, prevents the humidity inside the bag body from being too high, and blocks the invasion of external pathogens; the addition of the ultraviolet absorber further delays the aging of the material, so that the bag can maintain a long service life even under strong light.

[0008] Preferably, the ratio of polyethylene to polypropylene is 45:25, which optimizes the anti-aging performance and mechanical strength of the material, so that the bag can be used in a long-term outdoor environment without aging or damage, ensuring its long-lasting protective ability. The pore size of the polytetrafluoroethylene microporous membrane is controlled between 0.2-0.3 microns, ensuring good air permeability, and at the same time has good hydrophobicity, preventing excessive entry of rainwater or irrigation water, and avoiding excessive moisture accumulation around the stem.

[0009] Preferably, the cellulose fibers absorb excess moisture around the stems and discharge it through a natural evaporation process, thereby avoiding mold growth and the occurrence of secondary diseases caused by moisture accumulation; the inner surface of the bag body is coated with a hydrophilic coating, which is composed of a mixture of polyethylene glycol and polyvinyl alcohol, and can effectively absorb excess moisture on the surface of the stems and discharge it through natural evaporation or a breathable membrane, thereby further optimizing the humidity management in the bag body and avoiding the stems from being too wet or too dry; the outer surface of the bag body has an anti-ultraviolet coating, which is composed of titanium dioxide and silicone resin, and can further enhance the anti-ultraviolet performance of the bag, reduce material degradation caused by long-term exposure to sunlight, and extend the service life of the bag.

[0010] A method for preventing asparagus stem blight comprises the following steps:

[0011] a. Prepare an isolation bag made of a multilayer composite material, the composite material comprising the following components and their weight percentages: 40-50% polyethylene, 20-30% polypropylene, 5-10% zinc oxide, 10-15% cellulose fiber, 5-10% polytetrafluoroethylene microporous membrane, and 2-5% ultraviolet absorber.

[0012] b. Apply the isolation bag to the stems of asparagus in the seedling stage or early growth stage, and wrap the bag tightly around the stem through a fixing device to ensure that it is stable and does not fall off during the entire growth period.

[0013] c. Optimize the ratio of polyethylene and polypropylene to 45:25 to improve the material's anti-aging performance and mechanical strength, so that the bag can be used in a long-term outdoor environment without aging or damage.

[0014] d. Control the pore size of the polytetrafluoroethylene microporous membrane between 0.2-0.3 microns to ensure that the bag has good air permeability while maintaining good hydrophobicity to avoid excessive entry of rainwater or irrigation water.

[0015] e. The humidity inside the bag is regulated by the hygroscopicity of cellulose fibers to prevent excessive moisture from inducing other diseases.

[0016] f. Apply a hydrophilic coating on the inner surface of the bag. The coating is composed of a mixture of polyethylene glycol and polyvinyl alcohol, which is used to effectively absorb excess moisture on the surface of the stem and discharge it through natural evaporation or breathable membrane, further optimizing the humidity management in the bag.

[0017] g. Apply an anti-ultraviolet coating on the outer surface of the bag body, wherein the coating is composed of titanium dioxide and silicone resin to enhance the anti-ultraviolet performance of the bag, reduce light aging of the material, and extend the service life of the bag.

[0018] h. Check the status of the isolation bag regularly, check it every two months, and replace it as needed to ensure the continuity and integrity of the bag function.

[0019] i. In high temperature and high humidity environments, shorten the inspection cycle to once a month to prevent moisture accumulation in the bag from affecting the growth of asparagus.

[0020] j. Use elastic and adjustable fixings to ensure that the bag remains firmly in place as the stem grows, avoiding excessive pressure or friction on the stem.

[0021] k. Ensure that the sealing edge of the isolation bag is sealed by heat sealing technology to avoid cracking or loosening of the bag during installation or use.

[0022] l. Remove the bagging at the appropriate time according to the growth cycle of asparagus to avoid adverse effects on subsequent growth and ensure natural ventilation and healthy growth of asparagus stems.

[0023] Preferably, the polyethylene and polypropylene layers are processed and formed by a multi-layer co-extrusion composite technology to ensure the mechanical strength and anti-aging performance of the composite material.

[0024] Preferably, the ultraviolet absorber is a benzotriazole compound, which can effectively absorb ultraviolet rays and convert them into harmless heat energy, thereby further delaying material aging.

[0025] Preferably, the elastic strap of the fixing device is made of silicone material, has good durability and anti-aging properties, and is suitable for long-term use.

[0026] Preferably, the heat-sealed edge of the isolation bag adopts double-layer heat-sealing technology to ensure the reliability of the sealing performance. The UV coating of the isolation bag can reflect more than 90% of UV radiation and significantly delay the photodegradation process of the material. The cellulose fiber in the composite material adopts a double-layer structure, with the outer layer being hygroscopic fiber and the inner layer being hydrophobic fiber to enhance the humidity management function.

[0027] (III) Beneficial effects

[0028] The present invention provides an isolation bag and method for preventing asparagus stem blight, which has the following beneficial effects:

[0029] The isolation bag made of multi-layer composite materials significantly improves the material's anti-aging performance and mechanical strength. The optimized ratio of polyethylene and polypropylene and the addition of ultraviolet absorbers allow the bag to be used in long-term outdoor environments without aging or damage, thereby extending its service life. At the same time, the broad-spectrum antibacterial effect of zinc oxide effectively inhibits the growth of pathogenic microorganisms and reduces the risk of asparagus stem blight. The hygroscopicity of cellulose fiber regulates the humidity inside the bag, and combined with the excellent air permeability of the polytetrafluoroethylene microporous membrane, it effectively prevents secondary diseases caused by excessive humidity.

[0030] The use of hydrophilic coating and anti-UV coating further optimizes the humidity management and anti-UV ability inside and outside the bag. The hydrophilic coating can effectively absorb excess moisture on the surface of the stem and discharge it through natural evaporation or breathable membrane to prevent the stem from being too wet or too dry. The anti-UV coating not only delays the photoaging process of the material, but also can significantly reduce the degradation of materials exposed to sunlight for a long time. By using elastic and adjustable fixings and heat-sealed edge technology, the bag is ensured to always fit firmly during the growth of asparagus and have reliable sealing performance, thereby providing long-term and effective protection for the healthy growth of asparagus. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a flow chart of the present invention. DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention are described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] like Figure 1 As shown, an embodiment of the present invention provides an isolation bag for preventing asparagus stem blight, including the following components and their weight percentages: polyethylene: 40-50%, polypropylene: 20-30%, zinc oxide: 5-10%, cellulose fiber: 10-15%, polytetrafluoroethylene microporous membrane: 5-10%, ultraviolet absorber: 2-5%, the polyethylene and polypropylene layers provide the bag with mechanical strength, wear resistance and aging resistance, and can maintain the integrity of the structure during long-term use, zinc oxide as a broad-spectrum antibacterial agent, can effectively inhibit the growth of various pathogenic microorganisms, and reduce the occurrence of stem blight, cellulose fiber through its natural hygroscopicity, helps to regulate the humidity in the bag body, avoids other diseases caused by excessive moisture, and the polytetrafluoroethylene microporous membrane provides excellent air permeability for the bag, prevents the humidity inside the bag body from being too high, and blocks the invasion of external pathogens, the addition of ultraviolet absorber further delays the aging of the material, so that the bag can maintain a long service life even under strong light, the ratio of polyethylene to polypropylene is 45:25, which optimizes the material The anti-aging performance and mechanical strength of the material enable the bag to be used in a long-term outdoor environment without aging or damage, ensuring its long-lasting protective ability. The pore size of the polytetrafluoroethylene microporous membrane is controlled between 0.2-0.3 microns, ensuring good air permeability. At the same time, it has good hydrophobicity, preventing excessive entry of rainwater or irrigation water, and avoiding excessive moisture accumulation around the stem. The cellulose fiber absorbs excess moisture around the stem and discharges it through the natural evaporation process, thereby avoiding mold growth and secondary diseases caused by moisture accumulation. The inner surface of the bag body is coated with a hydrophilic coating, which is composed of a mixture of polyethylene glycol and polyvinyl alcohol. It can effectively absorb excess moisture on the surface of the stem and discharge it through natural evaporation or breathable membrane, thereby further optimizing the humidity management in the bag body and avoiding excessive moisture or dryness of the stem. The outer surface of the bag body has an anti-ultraviolet coating, which is composed of titanium dioxide and silicone resin, which can further enhance the anti-ultraviolet performance of the bag, reduce material degradation caused by long-term exposure to sunlight, and extend the service life of the bag.

[0034] A method for preventing asparagus stem blight comprises the following steps:

[0035] a. Prepare an isolation bag made of a multilayer composite material, the composite material includes the following components and their weight percentages: 40-50% polyethylene, 20-30% polypropylene, 5-10% zinc oxide, 10-15% cellulose fiber, 5-10% polytetrafluoroethylene microporous membrane, and 2-5% ultraviolet absorber.

[0036] b. Apply the isolation bag to the stems of asparagus in the seedling stage or early growth stage, and wrap the bag tightly around the stem through a fixing device to ensure that it is stable and does not fall off during the entire growth period.

[0037] c. The ratio of polyethylene and polypropylene is optimized to 45:25 to improve the material's anti-aging performance and mechanical strength, so that the bag can be used in a long-term outdoor environment without aging or damage. The polyethylene and polypropylene layers are processed and formed through multi-layer co-extrusion composite technology to ensure the mechanical strength and anti-aging performance of the composite material.

[0038] d. Control the pore size of the polytetrafluoroethylene microporous membrane between 0.2-0.3 microns to ensure that the bag has good air permeability while maintaining good hydrophobicity to avoid excessive entry of rainwater or irrigation water.

[0039] e. The humidity inside the bag is regulated by the hygroscopicity of cellulose fibers to prevent excessive moisture from inducing other diseases.

[0040] f. Apply a hydrophilic coating on the inner surface of the bag. The coating is composed of a mixture of polyethylene glycol and polyvinyl alcohol, which is used to effectively absorb excess moisture on the surface of the stem and discharge it through natural evaporation or breathable membrane, further optimizing the humidity management in the bag.

[0041] g. An anti-ultraviolet coating is applied on the outer surface of the bag. The coating is composed of titanium dioxide and silicone resin to enhance the anti-ultraviolet performance of the bag, reduce the light aging of the material, and extend the service life of the bag. The ultraviolet absorber is a benzotriazole compound, which can effectively absorb ultraviolet rays and convert them into harmless heat energy, thereby further delaying the aging of the material.

[0042] h. Check the status of the isolation bag regularly, check it every two months, and replace it as needed to ensure the continuity and integrity of the bag function.

[0043] i. In high temperature and high humidity environments, shorten the inspection cycle to once a month to prevent moisture accumulation in the bag from affecting the growth of asparagus.

[0044] j. Use an elastic and adjustable fixing device to ensure that the bag can still fit firmly during the growth of the stem to avoid excessive pressure or friction on the stem. The elastic strap of the fixing device is made of silicone material, which has good durability and anti-aging properties and is suitable for long-term use.

[0045] k. Ensure that the sealing edge of the isolation bag is sealed by heat sealing technology to avoid cracking or loosening of the bag during installation or use. The heat-sealed edge of the isolation bag adopts double-layer heat sealing technology to ensure the reliability of the sealing performance. The UV coating of the isolation bag can reflect more than 90% of UV radiation, significantly delaying the photodegradation process of the material. The cellulose fiber in the composite material adopts a double-layer structure, with the outer layer being hygroscopic fiber and the inner layer being hydrophobic fiber to enhance the humidity management function.

[0046] l. Remove the bagging at the appropriate time according to the growth cycle of asparagus to avoid adverse effects on subsequent growth and ensure natural ventilation and healthy growth of asparagus stems.

[0047] Table 1:

[0048]

[0049]

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An isolation bag for preventing asparagus stem blight, characterized in that: The invention comprises the following components and their weight percentages: polyethylene: 40-50%, polypropylene: 20-30%, zinc oxide: 5-10%, cellulose fiber: 10-15%, polytetrafluoroethylene microporous membrane: 5-10%, and ultraviolet absorber: 2-5%.

2. The isolation bag for preventing asparagus stem blight according to claim 1, characterized in that: The ratio of polyethylene to polypropylene is 45:25, which optimizes the anti-aging performance and mechanical strength of the material, so that the bag can be used in a long-term outdoor environment without aging or damage, ensuring its long-lasting protective ability. The pore size of the polytetrafluoroethylene microporous membrane is controlled between 0.2-0.3 microns.

3. The isolation bag for preventing asparagus stem blight according to claim 1, characterized in that: The cellulose fibers absorb excess moisture around the stems and discharge it through a natural evaporation process, thereby avoiding mold growth and the occurrence of secondary diseases caused by moisture accumulation. The inner surface of the bag body is coated with a hydrophilic coating, which is composed of a mixture of polyethylene glycol and polyvinyl alcohol. The coating can effectively absorb excess moisture on the surface of the stems and discharge it through natural evaporation or a breathable membrane, thereby further optimizing the humidity management in the bag body and avoiding excessive moisture or dryness of the stems. The outer surface of the bag body has an anti-ultraviolet coating, which is composed of titanium dioxide and silicone resin.

4. A method for preventing asparagus stem blight, characterized in that: The following steps are involved: a. Prepare an isolation bag made of a multilayer composite material, the composite material comprising the following components and their weight percentages: 40-50% polyethylene, 20-30% polypropylene, 5-10% zinc oxide, 10-15% cellulose fiber, 5-10% polytetrafluoroethylene microporous membrane, and 2-5% ultraviolet absorber. b. Apply the isolation bag to the stems of asparagus in the seedling stage or early growth stage, and wrap the bag tightly around the stem through a fixing device to ensure that it is stable and does not fall off during the entire growth period. c. Optimize the ratio of polyethylene and polypropylene to 45:25 to improve the material's anti-aging performance and mechanical strength, so that the bag can be used in a long-term outdoor environment without aging or damage. d. Control the pore size of the polytetrafluoroethylene microporous membrane between 0.2-0.3 microns to ensure that the bag has good air permeability while maintaining good hydrophobicity to avoid excessive entry of rainwater or irrigation water. e. The humidity inside the bag is regulated by the hygroscopicity of cellulose fibers to prevent excessive moisture from inducing other diseases. f. Apply a hydrophilic coating on the inner surface of the bag. The coating is composed of a mixture of polyethylene glycol and polyvinyl alcohol, which is used to effectively absorb excess moisture on the surface of the stem and discharge it through natural evaporation or breathable membrane, further optimizing the humidity management in the bag. g. Apply an anti-ultraviolet coating on the outer surface of the bag body, wherein the coating is composed of titanium dioxide and silicone resin to enhance the anti-ultraviolet performance of the bag, reduce light aging of the material, and extend the service life of the bag. h. Check the status of the isolation bag regularly, check it every two months, and replace it as needed to ensure the continuity and integrity of the bag function. i. In high temperature and high humidity environments, shorten the inspection cycle to once a month to prevent moisture accumulation in the bag from affecting the growth of asparagus. j. Use elastic and adjustable fixings to ensure that the bag remains firmly in place as the stem grows, avoiding excessive pressure or friction on the stem. k. Ensure that the sealing edge of the isolation bag is sealed by heat sealing technology to avoid cracking or loosening of the bag during installation or use. l. Remove the bagging at the appropriate time according to the growth cycle of asparagus to avoid adverse effects on subsequent growth and ensure natural ventilation and healthy growth of asparagus stems.

5. A method for preventing asparagus stem blight according to claim 4, characterized in that: The polyethylene and polypropylene layers are processed and formed by a multi-layer co-extrusion composite technology to ensure the mechanical strength and anti-aging performance of the composite material.

6. A method for preventing asparagus stem blight according to claim 4, characterized in that: The ultraviolet absorber is a benzotriazole compound, which can effectively absorb ultraviolet rays and convert them into harmless heat energy, thereby further delaying material aging.

7. A method for preventing asparagus stem blight according to claim 4, characterized in that: The elastic band of the fixing device is made of silicone material.

8. The method for preventing asparagus stem blight according to claim 4, characterized in that: The heat-sealed edge of the isolation bag adopts double-layer heat-sealing technology to ensure the reliability of the sealing performance. The UV coating of the isolation bag can reflect more than 90% of UV radiation and significantly delay the photodegradation process of the material. The cellulose fiber in the composite material adopts a double-layer structure, with the outer layer being hygroscopic fiber and the inner layer being hydrophobic fiber to enhance the humidity management function.

Images