Powdery degradable mulch film and preparation method thereof

A technology for degrading mulch and powder, which is applied in the direction of plant protection covers, etc., can solve the problems of powder products that are not more convenient for packaging and transportation, inconvenient for packaging, storage and transportation, and unfavorable for soil improvement. It achieves low cost, easy absorption, Good for packaging

Inactive Publication Date: 2011-03-30
田秋喜
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the field of degradable agricultural film, there is no powder product that is more convenient for packaging and transportation
Whether it is a liquid mulch or a paste mulch, the product contains water, which is not convenient for packaging, storage and transportation
Although the patent publication No. CN1114327 discloses a powdery multifunctional agricultural mulching film, its ingredients are mostly viscous substances, natural resins, etc., which are not easy to dissolve, and are more unfavorable for soil improvement.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Recipe:

[0044] Humic acid: weathered coal 30Kg

[0045] Film-forming agent: polyvinyl alcohol 5Kg

[0046] Surfactant: Octadecyltrimethylammonium chloride 2Kg

[0047] Modifier: potassium hydroxide 3Kg

[0048] Fertilizer: Urea 3Kg

[0049] Cross-linking aid: polyacrylamide 1Kg

[0050] Dispersion aid: tea saponin 2Kg.

[0051] Preparation steps:

[0052] a. Add the humic acids and modifiers in the formula amount into the reaction kettle filled with 60Kg water, and react at 90°C for 1.5 hours;

[0053] b. Put the formula amount of cross-linking auxiliary agent into the reaction kettle, continue to react at 100°C for 1 hour, discharge and dry;

[0054] c. Mix the dried material with the formulated amount of film-forming agent and dispersing aid evenly, and pulverize it to 200-300 mesh with a Raymond mill;

[0055] d. Add the formulated amount of surfactant and fertilizer into the pulverized material obtained in step c, and mix evenly to obtain a black finished ...

Embodiment 2

[0057] Recipe:

[0058] Humic acid: Lignite 45Kg

[0059] Film-forming agent: hydroxyethyl cellulose 3Kg

[0060] Surfactant: fatty acid diethanolamine 4Kg

[0061] Modifier: sodium hydroxide 10Kg

[0062] Fertilizer: Ammonium Phosphate 7Kg

[0063] Cross-linking aid: polymethyl acrylate 3Kg

[0064] Dispersing aid: Sodium methylene dinaphthalene sulfonate 6Kg.

[0065] The preparation steps are the same as those in Example 1, and the water consumption in step a is 100Kg.

Embodiment 3

[0067] Recipe:

[0068] Humic acid: 60Kg of humic acid

[0069] Film former: Potassium water glass 2Kg starch 6Kg

[0070] Surfactant: Sodium Lauryl Sulfate 16Kg

[0071] Modifier: Sodium hydroxide 25Kg

[0072] Fertilizer: Ammonium Phosphate 6Kg Ammonium Sulfate 6Kg

[0073] Crosslinking Auxiliary: Polyacrylic acid 8Kg

[0074] Dispersing aid: Calcium lignosulfonate 13Kg.

[0075] The preparation steps are the same as those in Example 1, and the water consumption in Step a is 120Kg.

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Abstract

The invention discloses a powder degradable mulching film which belongs to the production field of farming mulching films. The powder degradable mulching film is black or chocolate brown powder prepared from humic acids, a filmerformer, a surface active agent, a modifier, fertilizers, a cross bonding accessory ingredient as well as a dispersing aid. The powder can form a film structure on the surface of soil after being diluted by water and sprayed. Compared with the prior art, the powder degradable mulching film has the characteristics of low cost, good effect, being conveniently packaged and transported, and the like. Besides, the powder degradable mulching film has excellent popularization and application values.

Description

technical field [0001] The invention relates to a degradable agricultural mulching film, in particular to a powdery degradable mulching film which can form a film-like structure by dissolving and spraying. Background technique [0002] The wide application of agricultural plastic mulching technology has played an important role in improving crop yields. However, while this technology has brought huge benefits to agricultural production, it has also brought serious "white pollution" to the soil and the environment. Its specific manifestations are as follows: 1. It affects the soil microbial activity and the formation of normal soil structure, resulting in a decrease in soil fertility; 2. The residual mulch film has a negative impact on the physical properties of the soil, causing the root system of the crop to develop in a curved shape, causing the root system to become shorter. The performance of water absorption and fertilizer absorption is reduced, resulting in a reductio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L99/00C08K5/19C08K5/21C08K5/20C08K3/32C08K5/42C08K13/02A01G13/02
Inventor 田秋喜郭生钰
Owner 田秋喜
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