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Seaweed biological dry land film

A mulching, biological technology, applied in fertilizer mixtures, applications, organic fertilizers, etc., to achieve the effect of promoting plant growth, improving soil structure, and improving crop quality

Active Publication Date: 2014-01-22
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 for 2 hours, degas under vacuum for 4 hours, and then spread the film evenly on the stainless steel plate (or plexiglass plate), and the wet film thickness is controlled at 0.05mm. Dry for 40 minutes at 120°C to make the obtained sodium alginate film have a water content of 10%, and then immerse the sodium alginate film into 0.5% by mass of boric acid, 5% by mass of calcium lactate and 5% by mass of hexametaphosphate. In a 0.05% mixed solution, the pH of the solution was 5.3, the cross-linking reaction was carried out for 30 minutes, then rinsed with tap water, and dried at 120 °C for 20 minutes to obtain 15.72Kg of fully degraded seaweed biological dry mulch.

[0033] The technical indicators of the obtained dry mulch film: moisture content 8.62%; organic matter 91.21%; thickness 0.011mm; water absorption rate less than 28.1%; elongation rate 8.2%; light transmittance greater ...

Embodiment 2

[0035] Weigh 12kg of sodium alginate with a viscosity of 0.7Pas, add 1000Kg of 65°C water to dissolve for 2 hours, vacuum degas for 2 hours, and then spread the film evenly on the stainless steel plate (or plexiglass plate), and the wet film thickness is controlled at 0.04mm. After 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 0.5%. In a 0.2% mixed solution, the pH of the solution was 4.8, the cross-linking reaction was carried out for 30 minutes, then rinsed with tap water, and dried at a low temperature of 65 °C for 2 hours to obtain 12.3Kg of fully degraded seaweed biological dry mulch.

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

Embodiment 3

[0038] Weigh 14kg of potassium alginate with a viscosity of 0.5Pas, add 1000Kg of 65°C water to dissolve for 2 hours, vacuum degas for 4.5 hours, and then spread the film evenly on the stainless steel plate (or plexiglass plate), and the wet film thickness is controlled at 0.03mm. Dry at 100°C for 1.5 hours to make the obtained potassium alginate film with a water content of 26.3%, and then immerse the potassium alginate film into 0.5% by mass of boric acid, 8% by mass of calcium gluconate, and 8% by mass of hexametaphosphate. In a 1.5% mixed solution, the pH of the solution is 4.6, the cross-linking reaction is performed for 40 minutes, then rinsed with tap water, and dried at a low temperature of 100 ° C for 1 hour to obtain 14.6Kg of fully degraded seaweed biological dry mulch.

[0039] The technical indicators of the obtained dry mulch 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 mulch preparation, and in particular relates to a seaweed biological dry mulch, that is, a weakly acidic sodium-calcium type fully degradable seaweed biological dry mulch. technical background [0002] Drought and water shortage are the key problems restricting the world's agricultural production and environmental governance. Because the plastic film has the functions of moisturizing, heat preservation, insect resistance, disease prevention, and weed growth inhibition, it can maintain soil moisture, improve water utilization rate, and alleviate drought and drought conditions. The problem of soil water shortage in arid areas, while improving the growth environment of crops, is conducive to the growth and development of crops, and improves crop yields and agricultural benefits. Therefore, mulching technology, as an effective and important technical measure to solve drought and water shortage, has been widel...

Claims

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Application Information

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Patent Type & Authority Applications(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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