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Biomass-based medicinal fertilizer liquid mulch film and preparation method and application thereof

A technology of liquid mulch and biomass, which is applied in the direction of botany equipment and methods, applications, liquid fertilizers, etc., can solve the problems of soil heat preservation, insufficient water retention capacity, poor air permeability and water permeability of mulch film, and non-biodegradable plastic mulch film. Excellent fertilizer effect, good water permeability, long-lasting disease resistance and insect repellent effect

Active Publication Date: 2022-07-22
ZHONGKAI UNIV OF AGRI & ENG
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  • 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 medicinal fertilizer liquid mulch film and preparation method and application thereof
  • Biomass-based medicinal fertilizer liquid mulch film and preparation method and application thereof
  • Biomass-based medicinal fertilizer liquid mulch film and 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) 5g of discarded eucalyptus wood scraps were dried, pulverized and passed through a 60-mesh sieve, and dispersed in a sodium hydroxide solution with a concentration of 0.1mol / L, soaked for 24h at 30°C, and then added 2g of sodium monochloroacetate to react For 1 h, 2 g of sodium monochloroacetate was added to react for 1 h, and the mixture was precipitated and filtered, and the obtained liquid was dialyzed and freeze-dried to obtain a water-soluble plant fiber component.

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

[0043](3) dissolving the water-soluble plant fiber component obtained in step (1) in water, adding hydrophilic film aids...

Embodiment 2

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

[0050] (1) 5g discarded corncob scraps are dried, pulverized and crossed through a 60 mesh sieve, and dispersed in the sodium hydroxide solution that concentration is 1mol / L, soaked for 0.5 hour at 40 ° C, then added 2g of sodium monochloroacetate to react For 1 h, 2 g of sodium monochloroacetate was added to react for 1 h, and the mixture was precipitated and filtered, and the obtained liquid was dialyzed and freeze-dried to obtain a water-soluble plant fiber component.

[0051] (2) After dissolving the biological pesticide abamectin in methanol and blending it with bentonite, ultrasonically loaded at 50°C for 1 h to obtain drug-loaded minerals, and the mass ratio of abamectin to bentonite was controlled to be 10:1.

[0052] (3) dissolving the water-soluble plant fiber component obtained in step (1) in water, adding hydrophilic film aids polyethylene glycol, ...

Embodiment 3

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

[0056] (1) 5g of discarded rice husks are dried and pulverized and crossed through a 60-mesh sieve, and dispersed in a sodium hydroxide solution with a concentration of 0.5mol / L, soaked for 1 hour at 70°C, and then added 2g of sodium monochloroacetate to react For 1 h, 2 g of sodium monochloroacetate was added to react for 1 h, and the mixture was precipitated and filtered, and the obtained liquid was dialyzed and freeze-dried to obtain a water-soluble plant fiber component.

[0057] (2) Dissolving the biological pesticide abamectin in methanol and blending it with hydroxyapatite, ultrasonically loaded at 50°C for 1 h to obtain drug-loaded minerals, and controlling the mass ratio of abamectin to hydroxyapatite 7:1.

[0058] (3) dissolving the obtained water-soluble plant fiber component in step (1) in water, adding hydrophilic film aid polyvinylpyrrolidone, hyd...

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Abstract

The invention discloses a biomass-based medicinal fertilizer liquid mulch film and a preparation method and application thereof, and relates to the technical field of natural polymer materials. In the present invention, the waste agricultural and forestry biomass resources are functionalized and carboxymethylated to obtain water-soluble plant fiber components; biological pesticides are deposited and loaded on natural inorganic porous minerals in situ; Biomass-based medicinal fertilizer liquid mulch film is obtained after blending and crosslinking, hydrophilic film aid, drug-loaded minerals, humic acid, and glycerin, and adding surfactant to homogenize and emulsify. The biomass medicinal fertilizer liquid mulch film of the invention has good film-forming properties, has the dual functions of pesticides and fertilizers, and has significant insecticidal and fertilizer-enhancing effects on crops; the soil has strong water absorption, water retention and heat preservation capabilities, and can promote the rooting and germination of crops. Increasing production and efficiency meets the development needs of green agricultural planting. At the same time, it can effectively improve the high-value transformation and application of agricultural and forestry wastes and realize the recycling 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 mulch 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 plastic film and pesticides in the fields of crop warming and entropy retention, water retention and fertilizer retention, early maturity and yield increase, and pest and disease control. However, due to the one-sided pursuit of high yield, the traditional rough plastic mulch combined with high-frequency and large-scale chemical pesticide spraying has brought a series of major problems: (1) The 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 spreading of plastic mulch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G13/02
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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