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Slow-release efficient insect repelling and killing biopesticide and preparation method thereof

A biological pesticide, an efficient technology, applied in the fields of botanical equipment and methods, biocides, chemicals used for biological control, etc., can solve problems such as hazards, human health hazards, difficult to find, etc. Resistant to rain dilution

Active Publication Date: 2020-06-09
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

High-efficiency and highly toxic pesticides are highly toxic and remain in the environment for a long time. When humans and animals eat food containing pesticide residues, they will cause cumulative poisoning
This type of hazard often takes a long time to accumulate before showing symptoms, and it enters the human body through the enrichment of the food chain, and it is difficult to detect in time, causing serious harm
[0004] Once pesticides enter the environment, their toxicity and high residue characteristics will have an effect, causing serious pollution of the atmosphere, water and soil, thus bringing harm to human health
When toxic pesticides are applied to crops, vegetables and fruit trees, the pesticides remaining on the surface of the crops, due to their strong fat solubility, can easily penetrate into the waxy layer of the crop epidermis, making it difficult to completely wash off

Method used

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  • Slow-release efficient insect repelling and killing biopesticide and preparation method thereof
  • Slow-release efficient insect repelling and killing biopesticide and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A slow-release high-efficiency insecticidal biopesticide and a preparation method thereof, comprising the steps of:

[0026] 1. Dried 30g of oleander leaves and 60g of chamaejasma root, crushed them, and extracted with 100ml of acid-alcohol solution with a volume ratio of acetic acid and ethanol of 1:5 at 70°C for 4.5h to obtain liquid A;

[0027] 2. Crush and dry 460g of germinated potatoes, extract with 100ml of ethanol under reflux at 75°C for 3 hours, and evaporate the solvent to obtain potato extract;

[0028] 3. Add 0.6g of potato extract and 38g of rosin to 100ml of liquid A, stir well to dissolve, then evaporate the solvent to obtain insecticidal rosin;

[0029] 4. Mix 30g insecticidal rosin and 1mg titanium dioxide, heat to 270°C under 50Pa nitrogen protection and react for 10h, cool to room temperature, mechanically grind and pulverize to 2400 mesh in liquid nitrogen to obtain a slow-release high-efficiency insecticidal biopesticide .

Embodiment 2

[0031] A slow-release high-efficiency insecticidal biopesticide and a preparation method thereof, comprising the steps of:

[0032] 1. Dried 20g of oleander leaves and 32g of chamaejasma chamaejasme root, crushed them, and refluxed them with 100ml of acetic acid and ethanol with an acid-alcohol solution of 1:4 at 60°C for 4 hours to obtain liquid A;

[0033] 2. Crush 400g of germinated potatoes and dry them in the sun, extract with 100ml of ethanol under reflux at 70°C for 2 hours, and evaporate the solvent to obtain potato extract;

[0034] 3. Add 0.3g of potato extract and 21g of rosin to 60ml of liquid A, stir well to dissolve and then evaporate the solvent to obtain insecticidal rosin;

[0035] 4. Mix 20g insecticidal rosin and 1mg catalyst, heat to 200°C under the protection of 40Pa nitrogen and react for 6h, cool to room temperature, mechanically grind and pulverize to 2000 mesh in liquid nitrogen to obtain a slow-release high-efficiency insecticidal biopesticide .

Embodiment 3

[0037] A slow-release high-efficiency insecticidal biopesticide and a preparation method thereof, comprising the steps of:

[0038] 1. Dried 40 g of oleander leaves and 80 g of chamaejasma chamaejasme root, crushed them, and refluxed them with 100 ml of acetic acid and ethanol with a volume ratio of 1:9 to extract at 80°C for 5 hours to obtain liquid A;

[0039] 2. Crush and dry 480g of germinated potatoes, extract with 100ml of ethanol under reflux at 80°C for 4 hours, and evaporate the solvent to obtain potato extract;

[0040] 3. Add 0.5g of potato extract and 20g of rosin to 50ml of liquid A, stir well to dissolve and then evaporate the solvent to obtain insecticidal rosin;

[0041] 4. Mix 20g insecticidal rosin and 0.4mg catalyst, heat to 280°C under 60Pa nitrogen protection and react for 12h, cool to room temperature, mechanically grind and pulverize to 2500 mesh in liquid nitrogen to obtain a slow-release high-efficiency insecticidal organism pesticide.

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Abstract

The invention belongs to the field of agricultural products, and discloses a slow-release efficient insect repelling and killing biopesticide and a preparation method thereof. The preparation method comprises the following steps: carrying out reflux extraction on oleander leaves and stellera chamaejasme roots with an acid-alcohol solution to obtain a solution A; adding a germinated potato extractand rosin into the solution A, fully stirring and dissolving, and evaporating the solvent to obtain insect repelling and killing rosin; heating insect repelling and killing rosin and a catalyst to 200-280 DEG C under the protection of nitrogen, reacting, cooling to room temperature, mechanically grinding in liquid nitrogen, and pulverizing to obtain the slow-release efficient insect repelling andkilling biopesticide. After being applied, the slow-release efficient insect repelling and killing biopesticide can efficiently repel pests in crop soil for a long time, does not easily cause organicpollution to the surrounding environment, and can effectively avoid dilution by rainwater.

Description

technical field [0001] The invention relates to the field of agricultural products, in particular to a slow-release high-efficiency insecticidal biological pesticide and a preparation method thereof. Background technique [0002] Most of the insecticides and germicides in the prior art are chemical pesticides, which have low drug efficacy and long residual toxicity period, which seriously affect the crop growth environment and the health of humans and animals. They can prevent and control agricultural and forestry diseases and insect pests, and cause harm to humans and animals. And due to the large-scale application of chemical pesticides, the air, water, soil and food are polluted, and the poisons accumulate in domestic animals and humans to cause poisoning. [0003] According to literature reports, the utilization rate of pesticides is generally 10%, and about 90% of the remainder remains in the environment, causing environmental pollution. A large amount of pesticides vo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01N65/38A01P5/00A01P17/00A01P7/04
CPCA01N65/00A01N65/38A01N65/18A01N65/08A01N65/06
Inventor 汤佳鹏刘希文胡佳楠朱俐
Owner NANTONG UNIVERSITY
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