Seaweed biological dry land film

A mulching, biological technology, applied in the direction of fertilizer mixture, application, organic fertilizer, etc., to achieve the effect of promoting plant growth, good water retention performance, and reducing the amount of use

Active Publication Date: 2015-06-24
青岛亿安海洋植物胶囊药业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a weakly acidic sodium-calcium fully degradable seaweed bio-dried mulch film, which can not only alleviate the problem of soil water shortage in arid and semi-arid areas, improve the growth environment of crops, increase crop yield and agricultural benefits, but also solve the problem of "world agriculture" "white pollution" problem, greatly improve the soil environment, reduce agricultural production costs, effectively improve crop quality, increase crop yield and table safety

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Weigh 15kg of sodium alginate with a viscosity of 0.3Pas, add 1000Kg of 65°C water to dissolve it for 2 hours, degas it in vacuum for 4 hours, and spread the film evenly on a stainless steel plate (or plexiglass plate). The wet film thickness is controlled at 0.05mm. Dry at 120°C for 40 minutes, so that the water content of the obtained sodium alginate film reaches 10%, and then the sodium alginate film is immersed in boric acid with a mass percentage of 0.5%, calcium lactate with a mass percentage of 5%, and hexametaphosphate with a mass percentage of In the 0.05% mixed solution, the pH of the solution is 5.3, and the cross-linking reaction is carried out for 30 minutes, then washed with tap water, and dried at 120°C for 20 minutes to obtain 15.72Kg of fully degraded seaweed bio-dried mulch film.

[0033] The technical indicators of the obtained dry film: moisture content 8.62%; organic matter 91.21%; thickness 0.011mm; water absorption rate less than 28.1%; elongation ...

Embodiment 2

[0035] Weigh 12kg of sodium alginate with a viscosity of 0.7 Pas, add 1000Kg of 65°C water to dissolve it for 2 hours, degas it in vacuum for 2 hours, and spread the film evenly on a stainless steel plate (or plexiglass plate). The wet film thickness is controlled at 0.04mm. Drying at 65°C for 3 hours, the water content of the obtained sodium alginate film reached 16.2%, and then the sodium alginate film was immersed in boric acid with a mass percentage of 0.5%, calcium citrate with a mass percentage of 8%, and hexametaphosphate with a mass percentage of In the 0.2% mixed solution, the pH of the solution is 4.8, and the cross-linking reaction is carried out for 30 minutes, then washed with tap water, and dried at a low temperature of 65°C for 2 hours to obtain 12.3Kg of fully degraded seaweed bio-dried mulch film.

[0036] The technical indicators of the obtained dry film: moisture content 9.24%; organic matter 90.74%; thickness 0.011mm; water absorption rate less than 25.6%; e...

Embodiment 3

[0038] Weigh 14kg of potassium alginate with a viscosity of 0.5 Pas, add 1000Kg of 65°C water to dissolve it for 2 hours, degas it in vacuum for 4.5 hours, and spread the film evenly on a stainless steel plate (or plexiglass plate). The wet film thickness is controlled at 0.03mm. Dry at 100°C for 1.5 hours, so that the water content of the obtained potassium alginate film reaches 26.3%, and then the potassium alginate film is immersed in boric acid with a mass percentage of 0.5%, calcium gluconate with a mass percentage of 8%, and hexametaphosphate. In a 1.5% mixed solution, the pH of the solution is 4.6, and the cross-linking reaction is carried out for 40 minutes, then washed with tap water, and dried at 100°C for 1 hour to obtain 14.6Kg of fully degraded seaweed bio-dried mulch film.

[0039] The technical indicators of the obtained dry film: moisture content 10.08%; organic matter 91.14%; thickness 0.014mm; water absorption rate less than 24.7%; elongation rate 8.35%; light...

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Abstract

The invention relates to a seaweed biological dry land film. The film is prepared by adopting a method comprising the following steps: dissolving alginate with water, degassing, laying the film and drying to obtain an alginate semi-dry film; immersing the semi-dry film in a mixed aqueous solution containing organic calcium, phosphate and boric acid to carry out a crosslinking reaction; washing; and drying to obtain the seaweed biological dry land film. According to the film, the natural marine biomaterial algin is used as a main raw material to prepare the environment-friendly weakly acid sodium calcium type fully degradable seaweed biological dry land film, wherein the water absorption rate is less than 30 percent, the biodegradation rate is greater than 99 percent, and the transmittance is greater than 97.5 percent. According to the film, the defects of a plastic land film and a degradable plastic land film are overcome, and the technical bottleneck for preparation of the land film from the algin serving as the raw material is also overcome.

Description

technical field [0001] The invention belongs to the technical field of mulching film preparation, and in particular relates to a biological dry mulching film of seaweed, that is, a kind of weakly acidic sodium-calcium type fully degradable biological dry mulching film of seaweed. technical background [0002] Drought and water shortage are the key issues restricting the world's agricultural production and environmental governance. Because the mulch film has the functions of moisturizing, heat preservation, insect resistance, disease prevention, and weed growth inhibition, it can maintain soil moisture, improve water use efficiency, and alleviate drought and semi The problem of soil water shortage in arid areas, while improving the growth environment of crops, is conducive to crop growth and development, and improves crop yield and agricultural benefits. Therefore, as an effective and important technical measure to solve drought and water shortage, plastic film mulching techn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/52C08J5/18C08J3/24C09K101/00
CPCY02A40/28
Inventor 盛泰郭丽玲叶晓明张青刘晓琳杨海征
Owner 青岛亿安海洋植物胶囊药业有限公司
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