CN111742770A - A kind of fully degradable liquid agricultural stock solution and preparation method thereof - Google Patents

Abstract

The present invention is a fully degradable liquid agricultural stock solution and a preparation method thereof, comprising the following components: konjac fine powder, pH adjuster and auxiliary agent. According to the characteristics of soil and crops, soil conditioners and water-soluble fertilizers are added to increase crop production; it has the functions of heat preservation and temperature increase, which solves the problems of low viscosity, weak water absorption and poor film-forming, and achieves high viscosity and strong water absorption. , Good film formation, fully degradable, promoting crop production, heat preservation and warming purposes.

Description

A kind of fully degradable liquid agricultural stock solution and preparation method thereof

technical field

The patent of the present invention relates to an agricultural stock solution technology, in particular to a fully degradable liquid agricultural stock solution and a preparation method thereof.

Background technique

Mulch mulch forms a physical barrier layer on the soil surface, which slows down the exchange of water between the soil and the atmosphere to a certain extent. It has the functions of increasing temperature, maintaining moisture, controlling soil salinity, and inhibiting the growth of weeds. It is an important agricultural production increase technology. measure. The main raw material of traditional plastic film is polyethylene, which is difficult to degrade under natural conditions and can remain in the soil for 200 to 400 years. With the continuous increase in the amount and service life of agricultural film, a large amount of unrecoverable agricultural film remains in the soil, resulting in reduced soil permeability and compaction of the farmland plough layer, hindering the development of crop roots and the absorption of water and nutrients, reducing crop yield and residual The film is scattered with the wind, seriously affecting the rural ecological environment, agricultural product safety, and people's health. At present, there are plastic, liquid and starch stock solutions for agricultural applications. Some products have low film-forming and cohesive properties, and poor ventilation, humidification, and thermal insulation effects; some methods have high costs, complex processes, and long processing times, which are not conducive to industrial Although some are easy to use, they are only suitable for acidic soils; some dissolve and demould prematurely, which cannot play their due role; some may also cause soil pollution. Therefore, it is necessary to design a fully degradable liquid agricultural stock solution and a preparation method thereof, so as to solve the defects of low viscosity, weak water absorption, poor film-forming property and non-fully degradable in the prior art.

SUMMARY OF THE INVENTION

The technical problems to be solved by the present invention are low viscosity, weak water absorption, poor film-forming properties, and non-degradability. The problem of poor membrane properties and non-degradable properties.

The present invention is realized by the following technical scheme: a fully degradable liquid agricultural stock solution, comprising the following components: konjac fine powder, pH regulator and auxiliary agent.

In the prior art, degradable films are mostly prepared from starch as raw materials, but the branched and polyhydroxyl structure of starch reduces water absorption and tensile properties, so starch needs to be modified; "Preparation method", the cost is high, the process is complicated, the processing time is long, and it is not conducive to industrialization.

The konjac tuber of the present invention is rich in nutrients such as starch, fiber, protein, mannan, pectin, alkaloids, etc. The konjac powder has excellent characteristics such as high viscosity, strong water absorption, good film-forming property, etc. The pH regulator is Substances used to maintain or change the acidity and alkalinity of food, and additives are large-dose supplements that have a significant impact on changing product form, structure and performance, and the combination of the three can produce cheap and efficient agricultural degradable stock solutions.

Compared with the prior art, the present invention solves the problems of low viscosity, weak water absorption, poor film-forming property and non-full degradation in the prior art, and achieves high viscosity and water absorption. Strong, good film-forming properties, fully degradable, promoting crop production, heat preservation and warming purposes.

Further, by weight, it includes the following components: 8-12g of konjac flour, 1-3g of pH adjuster, and 7-10g of auxiliary;

The said components can better prepare the mulching film stock solution.

Further, in terms of weight, it includes the following components: 9-11g of konjac flour, 1-3g of pH regulator, and 8-9g of auxiliary;

Further, the pH regulator is sodium carbonate or sodium bicarbonate;

The pH regulator has a relatively good regulating effect and is relatively stable.

Further, pH adjusts the pH value of the konjac glue solution to 8-10;

The pH value reaches 8-10, which better improves the humidity and increases the crop yield.

Further, the adjuvant includes at least one of glycerol, polyvinyl alcohol, sodium carboxymethyl cellulose, triethanolamine, soil conditioner and water-soluble fertilizer.

The adjuvant includes the following components: glycerol 0.5-3.0g, polyvinyl alcohol 0.1-1.0g, sodium carboxymethyl cellulose 0.1-1.0g, triethanolamine 0.1-1.0g, soil conditioner 0.1-5.0g, water-soluble Fertilizer 0.1-5.0g.

Further, the raw material of konjac powder includes Pingshan white konjac;

The Pingshan white konjac can be extracted into konjac powder, which is a highly functional herb.

Further, the soil conditioner includes the following components: calcium and magnesium soil conditioners;

The calcium- and magnesium-dividing soil conditioner can better regulate the soil according to the characteristics of the soil and promote the increase of crop yield.

Further, the water-soluble fertilizer includes a component of diammonium phosphate;

The diammonium phosphate can be better conditioned according to the characteristics of crops, and can promote the increase of crop yields.

Further, the konjac powder is dissolved in distilled water to prepare konjac glue; the pH value of the konjac glue is adjusted by a pH adjuster to 8-10; the soil conditioner/water-soluble fertilizer is added to the konjac glue to prepare a liquid stock solution.

Further, take distilled water in a beaker, stir and heat until boiling; take konjac refined powder, slowly add konjac refined powder while stirring, without caking; after adding konjac refined powder, keep boiling and continue stirring for 5-30min.

Compared with the prior art, the present invention has the following advantages and beneficial effects:

1. A fully degradable liquid agricultural stock solution and a preparation method thereof of the present invention are easily degradable, can effectively reduce the pollution of residual film on cultivated land, and meet environmental protection requirements;

2. A fully degradable liquid agricultural stock solution and a preparation method thereof of the present invention have excellent characteristics such as high viscosity, strong water absorption, and good film-forming property;

3. A fully degradable liquid agricultural stock solution and a preparation method thereof of the present invention can add soil conditioners and water-soluble fertilizers according to the characteristics of soil and crops, and promote crop yield increase;

4. A fully degradable liquid agricultural stock solution and a preparation method thereof of the present invention have the functions of heat preservation and temperature increase.

Description of drawings

The accompanying drawings described herein are used to provide further understanding of the embodiments of the present invention, and constitute a part of the present application, and do not constitute limitations to the embodiments of the present invention. In the attached image:

Figure 1 is a schematic diagram of the preparation process flow.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments and the accompanying drawings. as a limitation of the present invention.

Example 1:

As shown in Figure 1, a preparation method of a fully degradable liquid agricultural stock solution is prepared by the following specific steps:

(1) Take 400mL of distilled water in a 500mL beaker, place it on a magnetic heating stirrer and heat it to boiling; accurately weigh 10g of konjac fine powder; set the magnetic heating stirrer stirring speed to 200r/min, and slowly add konjac fine powder while stirring , do not agglomerate; after adding konjac powder, reduce the heating power, keep boiling, and continue to stir for 15min;

(2) Accurately weigh 1.5g of sodium carbonate in a 100mL beaker, add water to dissolve; slowly add sodium carbonate solution along the inner wall of the beaker while stirring to adjust the pH value of the konjac glue solution to 9.02; after adding the sodium carbonate solution, increase the heating power to 1kw, keep boiling, stir for 1min, place it in an electric heating constant temperature water bath and cool to 60°C;

(3) Accurately weigh the appropriate amount of additives (glycerol 1.0g, sodium carboxymethyl cellulose 0.3g) in a 100mL beaker, the sodium carboxymethyl cellulose needs to be dissolved in water; slowly add it along the inner wall of the beaker while stirring Auxiliary, after adding the auxiliary agent, continue to stir for 1min; stand for 20min to obtain the liquid agricultural mulching film stock solution.

Compared with the blank control group, the temperature of the soil covered by the liquid agricultural stock solution increased by 1.8 to 2.1 °C, the humidity increased by 11.01% to 13.56%, and the corn yield increased by 9.58% to 10.77%. The decomposition rate of agricultural plastic film can reach 98.26%.

The liquid agricultural mulching film stock solution prepared in Example 1 was placed in a compressed air sprayer and sprayed on the farmland to form a liquid agricultural mulching film.

Example 2:

As shown in Figure 1, this example is based on Example 1, and is prepared by the following specific steps:

(1) described taking 400mL of distilled water in a 500mL beaker, placed on a magnetic heating stirrer and heated to boiling; accurately weighed 10g of konjac flour; set the magnetic heating stirrer stirring rate 200r/min, slowly add konjac while stirring The refined powder does not agglomerate; after adding the konjac refined powder, reduce the heating power, keep it boiling, and continue to stir for 15 minutes;

(2) Accurately weigh 3g of sodium bicarbonate into a 100mL beaker, add water to dissolve; slowly add sodium bicarbonate solution along the inner wall of the beaker while stirring, and adjust the pH value of the konjac glue solution to 8.56; after adding the sodium bicarbonate solution, increase the Heating power to 1kw, keep boiling, stir for 1min, place in electric heating constant temperature water bath and cool to 70℃;

(3) Accurately weigh the appropriate amount of additives (glycerol 1.0g, polyvinyl alcohol 0.1-1.0g, soil conditioner 1.0g, water-soluble fertilizer 2.0g) in a 100mL beaker, polyvinyl alcohol needs absolute ethanol (or Methanol) was miscible; while stirring, slowly add the auxiliary agent along the inner wall of the beaker in turn, after adding the auxiliary agent, continue to stir for 1min; let stand for 20min to obtain the liquid agricultural mulching film stock solution.

The liquid agricultural mulch stock solution prepared in Example 2 was placed in a compressed air sprayer and sprayed on the farmland to form a liquid agricultural mulch.

Compared with the blank control group, the soil temperature covered by liquid agricultural plastic film increased by 1.9 to 2.6 °C, the humidity increased by 13.61% to 16.55%, and the corn yield increased by 14.26% to 15.98%. The decomposition rate of agricultural mulch film can reach 98.73%.

Comparative Example 1:

This comparative example is based on Example 1, and the difference from Example 1 is:

Use starch to replace konjac flour, directly mix starch and auxiliary agent to prepare liquid agricultural mulching film stock solution.

(1) Take 400mL of distilled water in a 500mL beaker, place it on a magnetic heating stirrer and heat to boiling; accurately weigh 10g of soluble starch; set the magnetic heating stirrer stirring speed to 200r/min, slowly add soluble starch while stirring, do not Agglomeration; after the soluble starch is added, reduce the heating power, keep boiling, and continue to stir for 15 minutes;

(2) Accurately weigh 1.5g of sodium carbonate in a 100mL beaker, add water to dissolve; slowly add sodium carbonate solution along the inner wall of the beaker while stirring to adjust the pH value of the starch glue to 9.02; after adding the sodium carbonate solution, increase the heating power to 1kw, keep boiling, stir for 1min, place it in an electric heating constant temperature water bath and cool to 60°C;

(3) Accurately weigh the appropriate amount of additives (glycerol 1.0g, sodium carboxymethyl cellulose 0.3g) in a 100mL beaker, the sodium carboxymethyl cellulose needs to be dissolved in water; slowly add it along the inner wall of the beaker while stirring Auxiliary, after adding the auxiliary agent, continue to stir for 1min; stand for 20min to obtain the liquid agricultural mulching film stock solution.

Compared with the blank control group, the temperature of the soil covered by the liquid agricultural stock solution increased by 0.5 to 0.9 °C, the humidity increased by 2.42% to 4.98%, and the corn yield increased by 0.90% to 1.23%. The decomposition rate of agricultural mulch can reach 89.11%.

The liquid agricultural mulching film stock solution prepared in Comparative Example 1 was placed in a compressed air sprayer and sprayed on the farmland to form a liquid agricultural mulching film.

The specific embodiments described above further describe the objectives, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above descriptions are only specific embodiments of the present invention and are not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims (10)

1. A fully-degradable liquid agricultural stock solution is characterized by comprising the following components: konjak fine powder, a pH regulator and an auxiliary agent.

2. The fully degradable liquid agricultural concentrate of claim 1, comprising the following components by weight: 8-12g of konjak fine powder, 1-3g of pH regulator and 7-10g of auxiliary agent.

3. The fully degradable liquid agricultural concentrate of claim 2, comprising the following components by weight: 9-11g of konjak fine powder, 1-3g of pH regulator and 8-9g of assistant.

4. A fully degradable liquid agricultural concentrate according to any one of claims 1 to 3 wherein the pH adjusting agent is sodium carbonate or sodium bicarbonate.

5. A fully degradable liquid agricultural stock solution according to any one of claims 1 to 3 wherein the adjuvant comprises at least one of glycerol, polyvinyl alcohol, sodium carboxymethyl cellulose, triethanolamine, soil conditioner and water soluble fertilizer.

6. The fully degradable liquid agricultural concentrate of claim 5, wherein the soil conditioner comprises the following components: calcium conditioner and magnesium soil conditioner.

7. The fully degradable liquid agricultural chemical of claim 5, wherein the water soluble fertilizer comprises diammonium phosphate.

8. A fully degradable liquid agricultural chemical according to any one of claims 1 to 3 wherein the raw material of the konjac fine flour comprises konjac glucomannan.

9. A method of preparing a fully degradable liquid agricultural concentrate as claimed in any one of claims 1 to 8 comprising the steps of:

(1) dissolving rhizoma Amorphophalli refined powder with distilled water to obtain rhizoma Amorphophalli glue solution;

(2) adjusting pH value of the konjac gum solution to 8-10 by using a pH regulator;

(3) and (3) adding an auxiliary agent into the konjac glucomannan liquid solution obtained in the step (2) to obtain a liquid stock solution.

10. The method for preparing fully degradable liquid agricultural stoste according to claim 9, wherein the specific operation steps of the step (1) are as follows: putting distilled water into a beaker, stirring and heating until boiling; taking konjac powder, and slowly adding the konjac powder while stirring; boiling rhizoma Amorphophalli refined powder, and stirring for 5-30 min.

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