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Multifunctional degradable mulching film and production method thereof

A degradable mulch film and multi-functional technology, applied in the field of agricultural production, can solve problems such as soil damage, adverse effects on crop growth, long degradation time, etc., and achieve the effects of promoting crop growth, convenient laying, and protecting the soil environment

Inactive Publication Date: 2020-08-04
梁玉祥
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to ensure the film-forming effect, the degradable mulch films in the prior art all use relatively high content of high-molecular-weight adhesive components without exception, and the use of these adhesive components will, on the one hand, cause many chemical components to enter the soil. On the other hand, although the degradation ability of polymer substances is improved due to the addition of inorganic components in the polymer polymerization process, it still takes a long time for degradation, which will have a negative impact on the growth of crops in the next season

Method used

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  • Multifunctional degradable mulching film and production method thereof
  • Multifunctional degradable mulching film and production method thereof
  • Multifunctional degradable mulching film and production method thereof

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preparation example Construction

[0045] The present invention also provides the preparation method of the above-mentioned multifunctional degradable plastic film, comprising the following steps: S1. making the plant fiber into a dense fiber blanket; S2. adding the film coating material into water and heating to the gelatinization temperature of starch (75-90 ℃) After stirring, it is configured into a coating slurry with a viscosity of 6.7-12.8Pa.S; S3. Select a pair of dense fiber blankets, set one of the dense fiber blankets as the first fiber layer, and the other dense fiber blanket as the second fiber layer. For the second fiber layer, apply the coating slurry prepared in step S2 respectively (specifically, by spraying) on ​​one side surface of the first fiber layer and the second fiber layer; S4. apply the coating obtained in step S3 The first fiber layer and the second fiber layer with the coating slurry are dried with hot air to form a uniform dense film layer; S5. Add nutrients to water, stir to form a ...

Embodiment 1

[0050] This embodiment provides a multifunctional degradable mulch film A, including the first fiber layer 10, the first coating layer 20, the nutrient filling layer 30, the second coating layer 40 and the second fiber layer 50 arranged in sequence; The first fiber layer 10 and the second fiber layer 50 are both made of plant fibers with a thickness of 1 cm and a density of 400 g / m 3 The dense fiber blanket; the first coating layer 20 is sprayed on the side of the first fiber layer 10 near the second fiber layer 50 by the coating material; the second coating layer 40 is sprayed on the second fiber layer 50 by the coating material One side near the first fiber layer 10 is formed; the nutrient filling layer 30 is filled between the first coating layer 20 and the second coating layer 40 by nutrients; the first fiber layer 10 and the second fiber layer 50 are fixedly connected .

[0051] In this embodiment, the weight ratio of the dense fiber blanket, the coating material and the...

Embodiment 2

[0064] This embodiment provides a multifunctional degradable mulch film B, which differs from Embodiment 1 in that:

[0065] (1) The first fiber layer and the second fiber layer of the present embodiment are all prepared from plant fibers with a thickness of 4cm and a density of 650g / m 3 dense fiber blanket;

[0066] (2) In this embodiment, the weight ratio of the dense fiber blanket, the coating material and the nutrient substance satisfies: 8:1.6:4.

[0067] (3) The coating material of the present embodiment comprises the following components in parts by weight: 50 parts of starch, 15 parts of chitosan, 20 parts of vegetable glue, 8 parts of polyvinyl alcohol, and 0.5 part of microbial agent.

[0068] (4) The nutrients in this embodiment include the following components in parts by weight: 15 parts of monoammonium phosphate, 50 parts of urea, 5 parts of straw powder, and 30 parts of potassium sulfate.

[0069] This embodiment also provides the preparation method of the abo...

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Abstract

The invention provides a multifunctional degradable mulching film. The multifunctional degradable mulching film comprises a first fiber layer, a first coated layer, a nutrient filling layer, a secondcoated layer and a second fiber layer which are sequentially arranged; both the first fiber layer and the second fiber layer are dense fiber blankets produced from plant fibers; the first coated layeris formed by coating the side, close to the second fiber layer, of the first fiber layer with a coating material; the second coated layer is formed by coating the side, close to the first fiber layer, of the second fiber layer with the coating material; the nutrient filling layer is formed by filling the portion between the first coated layer and the second coated layer with a nutrient substance;and the first fiber layer and the second fiber layer are fixedly connected. A production method of the multifunctional degradable mulching film is further provided. The multifunctional degradable mulching film can have an excellent effect of retaining soil moisture, can provide crops with the nutrient substance needed by the crops in a growing process, and can be fast and efficiently degraded, sothat growth of the next season of crops is not affected.

Description

technical field [0001] The invention belongs to the technical field of agricultural production, and in particular relates to a multifunctional degradable plastic film and a preparation method thereof. Background technique [0002] In the process of agricultural production, water and moisture conservation is one of the key measures to provide sufficient water for crops and ensure the normal growth of crops. The existing water and moisture conservation measures are mainly plastic film covering, which can block the evaporation of water in the soil by using plastic film, so that it can be effectively Reduce the evaporation of soil moisture, achieve the purpose of moisture conservation during drought and increase moisture after rain. However, the main components of mulch are polymer plastics, including polyvinyl chloride, polyethylene, etc. These polymer materials are difficult to degrade. The production of a large amount of mulch has caused damage to the soil and the surrounding...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G13/02C05G3/00C05G5/16C05G3/40C05G3/80C09D103/02C09D105/08C09D129/04C09D105/00C09D101/28C09D197/00C09D193/04
CPCA01G13/0275C05B7/00C05G3/00C08L2205/035C09D103/02C05G3/40C05G3/80C05G5/16C05C3/00C05C9/00C05C11/00C05D1/02C05F5/002C05F11/00C05F11/02C05F11/08C08L5/08C08L29/04C08L5/00C08L1/286C08L97/005C08L93/04Y02A40/28
Inventor 梁玉祥
Owner 梁玉祥