Biomass-based medical fertilizer liquid mulching film as well as preparation method and application thereof

A technology of liquid mulch and biomass, applied in the direction of botany equipment and methods, application, liquid fertilizer, etc., can solve the problems of soil heat preservation, insufficient water retention capacity, poor air permeability and water permeability of mulch film, non-biodegradable plastic mulch film, etc., to achieve Realize the recycling of renewable resources, good water permeability, and reduce the effect of manual operation

Active Publication Date: 2021-03-19
ZHONGKAI UNIV OF AGRI & ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the one-sided pursuit of high yield, the traditional rough plastic mulch combined with high-frequency and large-scale spraying of chemical pesticides has brought a series of major problems: (1) Plastic mulch is not biodegradable, which not only causes serious pollution to the environment, but also accumulates in the soil for a long time It also causes serious damage to the soil structure; (2) The spread of plastic mulch is also limited by terrain, etc. In the early stage of crop cultivation, holes need to be artificially opened to help seedlings, and the air permeability and water permeability of the mulch are poor, and the seeds and roots are prone to mold and rot; (3) High-frequency and large-scale spraying of chemical pesticides not only causes serious economic waste, but also has a large amount of pesticide residues, which are easy to accumulate in organisms through the food chain, causing serious harm to human health
[0004] However, the liquid mulch film currently on the market is not mature enough, and there are still some shortcomings in terms of performance.
Such as: 1. After spraying, the film-forming property on the ground surface is poor, and the heat preservation and water retention capacity of the soil are insufficient.
2. The function of liquid mulch film is relatively simple, and it cannot achieve the effect of dual-use of medicine and fertilizer
3. The method of simple physical blending is used to dope the liquid mulch with biological pesticides, which cannot achieve slow, long-lasting and stable release of pesticides, and the utilization rate of pesticides is low

Method used

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  • Biomass-based medical fertilizer liquid mulching film as well as preparation method and application thereof
  • Biomass-based medical fertilizer liquid mulching film as well as preparation method and application thereof
  • Biomass-based medical fertilizer liquid mulching film as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The preparation method of eucalyptus wood powder-based medicinal fertilizer liquid mulch film comprises the following steps:

[0041] (1) Dry and crush 5g of discarded eucalyptus wood scraps, pass through a 60-mesh sieve, disperse them in a sodium hydroxide solution with a concentration of 0.1mol / L, soak them for 24 hours at 30°C, and then add 2g of sodium monochloroacetate to react After 1 hour, add 2 g of sodium monochloroacetate to react for 1 hour, precipitate and filter, dialyze and freeze-dry the obtained liquid to obtain a water-soluble plant fiber component.

[0042] (2) The biopesticide abamectin was dissolved in methanol, blended with bentonite, and then ultrasonically loaded at 50°C for 1 hour to obtain drug-loaded minerals. The mass ratio of abamectin to vermiculite was controlled to be 1:1.

[0043](3) Dissolve the water-soluble plant fiber component obtained in step (1) in water, add hydrophilic film-aiding agent gelatin, vermiculite / abamectin, humic acid,...

Embodiment 2

[0049] The preparation method of the corncob-based medicinal fertilizer liquid mulch film comprises the following steps:

[0050] (1) Dry and crush 5g of discarded corn cob scraps, pass through a 60-mesh sieve, and disperse them in a sodium hydroxide solution with a concentration of 1mol / L, soak for 0.5 hours at 40°C, and then add 2g of sodium monochloroacetate to react After 1 hour, add 2 g of sodium monochloroacetate to react for 1 hour, precipitate and filter, dialyze and freeze-dry the obtained liquid to obtain a water-soluble plant fiber component.

[0051] (2) The biopesticide abamectin was dissolved in methanol, blended with bentonite, and then ultrasonically loaded at 50°C for 1 hour to obtain drug-loaded minerals. The mass ratio of abamectin to bentonite was controlled to be 10:1.

[0052] (3) Dissolve the water-soluble plant fiber component obtained in step (1) in water, add hydrophilic film-aiding agent polyethylene glycol, bentonite / abamectin, and humic acid, and a...

Embodiment 3

[0055] The preparation method of chaff-based medicinal fertilizer liquid plastic film comprises the following steps:

[0056] (1) Dry and crush 5g of discarded rice husks, pass through a 60-mesh sieve, and disperse them in a sodium hydroxide solution with a concentration of 0.5mol / L, soak for 1 hour at 70°C, and then add 2g of sodium monochloroacetate to react After 1 hour, add 2 g of sodium monochloroacetate to react for 1 hour, precipitate and filter, dialyze and freeze-dry the obtained liquid to obtain a water-soluble plant fiber component.

[0057] (2) Dissolve the biopesticide avermectin in methanol and blend it with hydroxyapatite, and then ultrasonically load it at 50°C for 1 hour to obtain drug-loaded minerals, and control the mass ratio of abamectin to hydroxyapatite It is 7:1.

[0058] (3) Dissolving the water-soluble plant fiber component obtained in step (1) in water, adding hydrophilic film-aiding agent polyvinylpyrrolidone, hydroxyapatite / abamectin, humic acid, ...

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Abstract

The invention discloses a biomass-based medical fertilizer liquid mulching film as well as a preparation method and application thereof, and relates to the technical field of natural polymer materials. The method comprises the following steps: firstly, functionalizing, carboxymethylating and modifying waste agricultural and forestry biomass resources to obtain a water-soluble plant fiber component; depositing a biological pesticide in-situ and loading the biological pesticide on a natural inorganic porous mineral substance; blending and crosslinking the water-soluble plant fiber component, a hydrophilic film aid, the drug-loaded mineral substance, humic acid and glycerol, adding a surfactant, homogenizing, and emulsifying to obtain the biomass-based medical fertilizer liquid mulching film.The biomass medical fertilizer liquid mulching film disclosed by the invention is good in film-forming property, has dual effects of pesticides and fertilizers, and has remarkable insecticidal and fertility-increasing effects on crops; the mulching film has strong water absorption, water retention and heat preservation capabilities on soil, can promote rooting and germination of crops, increasesyield and efficiency, meets the development requirements of green agricultural planting, can effectively improve the high-valued conversion application of forestry and agricultural residues, and realizes the cyclic utilization of renewable resources.

Description

technical field [0001] The invention relates to the technical field of natural polymer materials, in particular to a biomass-based medicinal fertilizer liquid mulching film and a preparation method and application thereof. Background technique [0002] The safe and stable production of my country's agricultural industry benefits from the unique advantages of mulch film and pesticides in the fields of crop temperature increase and entropy preservation, water retention and fertilizer fixation, early maturity increase, and pest control. However, due to the one-sided pursuit of high yield, the traditional rough plastic mulch combined with high-frequency and large-scale spraying of chemical pesticides has brought a series of major problems: (1) Plastic mulch is not biodegradable, which not only causes serious pollution to the environment, but also accumulates in the soil for a long time It also causes serious damage to the soil structure; (2) The spread of plastic mulch is also l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05G3/60C05G3/80C05G5/20A01G13/02A01G13/00
CPCC05G3/00C05G3/60C05G3/80C05G5/20C05D9/00C05B17/00A01G13/0256A01G13/00A01G2013/004C05F11/00C05F11/02C05F11/08Y02A40/28
Inventor 张雪琴郭浩麒欧阳桂焕王汉宇肖乃玉罗文翰
Owner ZHONGKAI UNIV OF AGRI & ENG
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