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Completely degradable water retaining mulching of fruit residue humic acid and its production process

A humic acid and full-degradation technology, applied in plant protection covers, etc., can solve problems such as slightly worse

Inactive Publication Date: 2009-10-21
EAST CHINA UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is slightly inferior to plastic films such as PE and PS in terms of thermal insulation and moisture resistance.

Method used

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  • Completely degradable water retaining mulching of fruit residue humic acid and its production process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] After adding 100 grams of apple pomace after extracting polyphenolic compounds, 2 times the weight of water, 0.003 grams of ammonium sulfate, 0.002 grams of dipotassium hydrogen phosphate, 0.001 grams of potassium chloride and 0.005 grams of starch nutritional compounds, and After 3 minutes of UV irradiation, inoculate 3.1×10 5 cfu / ml of Trichoderma and 1.2 x 10 5 The mixture of Aspergillus niger spores of cfu / ml was prepared at 30°C for 48 hours to prepare liquid strains;

[0026] Put 65 grams of crushed reed stems and leaves, and 35 grams of apple pomace mixture after extracting polyphenol compounds into 0.02 times the weight of liquid bacteria, and under anaerobic conditions, solid-state fermentation at 25 ° C; made after 7 days Highly active BHA containing IAA and other components;

[0027] Mixing 38 grams of high-activity BHA with 62 grams of starchy industrial waste residue, etc., to make a semi-finished film with a viscosity of 80,000 centipoise. The industrial...

Embodiment 2

[0030] Adopt the same method of embodiment 1, wherein:

[0031] Add 33 grams of apple pomace after extracting polyphenolic compounds to the pulverized plant barley in a weight ratio of 1:3, add 10 times the weight of water, inoculate yeast spores, and conduct solid-state fermentation at 20°C under anaerobic conditions ; After 10 days, high-activity BHA containing ABA and other components was made.

[0032] (3) Mix highly active BHA with 5 grams of polyvinyl alcohol film-forming agent of 0.2-10 mg / L, 0.3 gram of palmitic acid thickener, and 0.1 gram of salicylic acid antioxidant, and adjust it to be stable at 40 ° C. , the semi-finished product with a viscosity of 50,000 centipoise is sprayed on the site to be covered to form a fully degradable water-retaining plastic film with a thickness of 0.12mm;

Embodiment 3

[0034] After the secondary apple pomace after extracting polyphenols is mixed with wild reed broken leaves, according to the liquid strain expansion cultivation method of implementation 1, it is solid-state fermented at 30 ° C, and after 6 days, it is made into IAA, ABA and other components. Highly active BHA (see attached figure 1 ); Then make the semi-finished mulch film by implementing 2.

[0035] 200 grams of said semi-finished products are added on the spot with 3 grams of PVA anionic surfactants with a concentration of 10 mg / L, and sprayed on the field; after film formation, the thickness of the mulch layer on the soil surface is measured to be 0.15 mm; within 3 months After that, it can be completely degraded into humic acid fertilizer.

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Abstract

The invention discloses a pomace humic acid fully degradable water-retaining film and a production method thereof. In the process, high-activity BHA is firstly produced by solid-state fermentation technology, and then the starch industrial waste residue of a biopesticide enterprise is used to produce a fully degradable water-retaining film. The process includes: (1) crushing of BHA raw materials, solid-state fermentation under the action of complex bacteria such as fungi (Trichoderma, Aspergillus niger), yeast (Aspergillus plana, Aspergillus polydotio) and so on; (2) Starch industrial waste residue Pretreatment, film-forming processing with highly active BHA and packaging storage. The BHA-highly active fully degradable water-retaining mulch film produced by this process is widely used and low in cost, which is not only beneficial to the natural environment protection of apple production areas or processing areas, but also conducive to moisture conservation and production increase of crops in severe cold and water shortage areas in western my country.

Description

technical field [0001] The invention relates to a fully degradable water-retaining plastic film and a production method thereof. technical background [0002] A large amount of apple pomace will be produced in apple production, marketing and processing areas. These apple pomace are mainly composed of apple skin, apple seeds, stems, leaves and rotten fruits. If not handled properly, the natural environment will be seriously affected. Recent studies have shown that apple peel contains polyphenolic compounds with high added value, which have various pharmacological effects such as anti-cancer, anti-oxidation, and anti-arteriosclerosis. At present, except for a small amount of apple pomace being used as feed (which needs to be strictly tested for pesticide residues), most of it is directly used for the production of organic fertilizers. [0003] The production of pomace humic acid organic fertilizer reported in the literature is generally similar to weathered coal humic acid an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L99/00C08J5/18A01G13/02
Inventor 周霞萍黄琛孟繁伟程礼华盛建林沈天瑞
Owner EAST CHINA UNIV OF SCI & TECH
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