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Degradable composite liquid mulch film and preparation method thereof

A technology of composite liquid and liquid mulch, which is applied in the direction of chemical instruments and methods, fertilizer mixtures, organic fertilizers, etc., to achieve the effects of preventing water evaporation, being convenient to use, and maintaining water and soil

Inactive Publication Date: 2012-05-30
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a degradable composite liquid mulch and its preparation method by utilizing the interaction between natural polymer materials and clay, aiming at the main problems existing in the current liquid mulch

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Under stirring, disperse 6% starch in 78% water, dissolve evenly at 90°C, then add 3% attapulgite, 10% humic acid, 2% additive (glycerol) after the temperature drops to 50°C and 1% crosslinker (FeSO 4 ), continue to stir for 2-4h, cool and sub-package to obtain liquid film.

Embodiment 2

[0020] Under stirring, disperse 3% starch and 3% cellulose in 83% water, dissolve evenly at 90°C, add 2.5% attapulgite, 6% humic acid, 0.5% paraben after the temperature drops to 45°C agent (sodium lauryl sulfate) and 2% crosslinker (FeSO 4 ), continue to stir for 2-4h to obtain a liquid film.

Embodiment 3

[0022] Under stirring, disperse 3% starch and 5% chitosan in 76% water, dissolve evenly at 90°C, add 2.5% bentonite, 10% humic acid, 0.5% additives after the temperature drops to 40°C (sodium benzenesulfonate) and 3% cross-linking agent (superphosphate), and continue to stir for 2-4 hours to obtain a liquid film.

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Abstract

The invention discloses a degradable composite liquid mulch film and a preparation method thereof. The liquid mulch film comprises 5-10% of natural high-molecular material, 1-5% of clay, 5-20% of humic acid, 0.5-5% of cross-linking agent, 0.5-5% of auxiliary agent and the balance of water. The liquid mulch film can be sprayed on a soil surface, has effect of inhibiting moisture evaporation and is suitable for agriculture in semiarid region and lawn maintenance, etc.

Description

technical field [0001] The invention relates to an environment-friendly and degradable composite liquid mulch film and a preparation method thereof. Background technique [0002] The widespread application of plastic mulch in the 20th century brought a technological change to traditional agricultural production. Due to the remarkable effect of film-mulching cultivation technology on increasing production and income, it has become an important measure for drought resistance, water saving and crop production increase in my country's alpine, arid and semi-arid regions. However, with the increase in the use of plastic mulch, its negative effects have gradually emerged. First of all, it is difficult to recycle plastic mulch. Due to the weak awareness of environmental protection of farmers, the used mulch film is only recycled large pieces of damaged mulch film, while small pieces of mulch film remain in the land; secondly, even the recycled residual film is piled up on the fiel...

Claims

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Application Information

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IPC IPC(8): C09K17/52C09K17/50C09K101/00
Inventor 宗莉王爱勤康玉茹
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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