Emulsion for killing aphid and red spider and its preparation method

A technology of red spider and emulsion, applied in the field of natural plant application, can solve the problems of poor persistence, interference of total alkaloid insecticidal activity, difference in insecticidal activity, etc., and achieves reduction of toxicity and irritation, no environmental pollution, and production cost. low effect

Active Publication Date: 2014-05-28
蚌埠圣丹生物化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The results of the field efficacy test show that the two extracts of garlic and tea seed cake have a certain control effect on red spider mites, but their persistence is poor (Ningbo Agricultural Science and Technology, 2011, 2: 13-15)
Zhao Botao and others carried out the optimization of the extraction process of the total alkaloids of Sophora flavescens and the research on the aphidicidal activity. The test of the insecticidal activity of the extract of Sophora flavescens on aphids showed that the insecticidal activity of different treatments of Sophora flavescens extract and different extraction solvents The difference is signi

Method used

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  • Emulsion for killing aphid and red spider and its preparation method
  • Emulsion for killing aphid and red spider and its preparation method
  • Emulsion for killing aphid and red spider and its preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Ailanthus leaf water extract, Sophora flavescens alcohol extract, Eucommia ulmoides leaf water extract, Neem bark alcohol extract were mixed in a weight ratio of 1:1:2:2 to obtain 2.0g mixed extract, and n-hexane was added. (or xylene, cyclohexanone, cyclohexanol, 200# solvent oil), heat and dissolve at 40 ° C to obtain medicinal liquid; according to the amount of prescription 1, emulsifier Tween 80 and auxiliary agent sodium carboxymethyl cellulose Add into the prepared medicinal solution, use an ultrasonic emulsification device, the ultrasonic frequency is 15 kHz, the ultrasonic time is 30 min, and the temperature is 60 ° C to obtain a colostrum; 5% g / mL of ethyl paraben is slowly added dropwise to the colostrum. , 5% g / mL ethylene glycol solution and deionized water, the dripping rate is 3mL / min, heated in a 60 ℃ water bath, while stirring at 7000r / min, after adding deionized water, continue to stir for 30min, after the emulsion is formed It should be cooled slowly, ...

Embodiment 2

[0043] Ailanthus leaf water extract, Sophora flavescens alcohol extract, Eucommia ulmoides leaf water extract, Neem bark alcohol extract were mixed in a weight ratio of 1:1:2:2 to obtain 2.0g mixed extract, and n-hexane was added. In the solvent, heat and dissolve at 40 ° C to obtain the medicinal liquid; according to the amount of prescription 2, the emulsifier Tween 60 (or Tween 80) and the auxiliary agent sodium carboxymethyl cellulose are added to the medicinal liquid of the configuration, and ultrasonic emulsification is used. device, the ultrasonic frequency is 15kHz, the ultrasonic time is 30min, and the temperature is 60°C to obtain a colostrum; 5% g / mL ethylparaben and 5% g / mL ethylene glycol solution are slowly added dropwise to the colostrum. and deionized water, the dropping rate is 3mL / min, heated in a water bath at 60°C, and stirred at 7000r / min at the same time. After the deionized water is added dropwise, continue to stir for 30min. After the emulsion is formed,...

Embodiment 3

[0051] Pesticide Emulsion I was prepared according to the following recipe:

[0052]

[0053] II: Take 1mL of 75% dichlorvos EC into a 2000mL large container, add distilled water to dilute to 1500mL;

[0054] III: Take 1mL of 48% omethoate EC into a 2000mL large container, add distilled water to dilute to 1500mL;

[0055] IV: clear water.

[0056] The control effect test of three seasons was carried out continuously, and three times in parallel in each season to investigate the control effect of the pesticide emulsion (I), dichlorvos (II) and omethoate (III) of the present invention on aphids and red spider mites. The experimental results are shown in Tables 3 and 4:

[0057] The control effect of table 33 insecticides on aphids

[0058]

[0059] The control effect of table 43 kinds of insecticides on red spider mites

[0060]

[0061] in:

[0062]

[0063]

[0064] Tests show that the pesticide emulsion of the present invention has better control effects o...

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Abstract

The invention discloses emulsion for killing aphid and red spider and its preparation method. The emulsion uses mixed extractum as a main medicine, the mixed extractum comprises ailanthus altissima leaf water extraction extractum, radix sophorae flavescentis alcohol extraction extractum, eucommia ulmoides leaf water extraction extractum and neem bark alcohol extraction extractum with a weight ratio of 1:1:2:2, the emulsion also comprises, in relative to each gram of the main medicine, the following components: 40-50mL of a solvent, 5-15mL of an emulsifier, 0.05-0.15g of an assistant, 1-2mL of a preservative, 5-7.5mL of an antifreeze and 50-100mL of deionized water. The preparation method of the emulsion is as follows: (1) mixing the four extraction extractum according to the ratio, adding the solvent, heating for dissolving to obtain a medicine liquid; (2) adding the emulsifier and the assistant to the medicine liquid, using an ultrasonic emulsification device to obtain primary emulsion; (3) successively adding the preservative, the antifreeze and the deionized water to the primary emulsion, stirring, cooling to room temperature to obtain the emulsion. The emulsion is environmental friendly, stable in quality and good in insecticidal effect, and the preparation method has the advantages of simple operation and ow production cost.

Description

technical field [0001] The invention relates to an emulsion for killing aphids and red spiders and a preparation method thereof, belonging to the technical field of natural plant application. Background technique [0002] Today's world is facing four major problems, namely population problem, food problem, energy problem and environmental problem. There are more than 1,500 kinds of major plant diseases and insect pests in my country, dozens of which are particularly serious. So far, chemical control is still the most important means and measure in my country's pest control. Among them, more than 95% use chemical pesticides, the proportion of biological pesticides is only 2% to 3%, and there are very few emulsions. On the one hand, pesticides play a very important role in killing and inhibiting diseases and insect pests and ensuring stable and high yield of crops. At the same time, due to unreasonable use, they also endanger the safety of the environment through various mea...

Claims

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Application Information

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IPC IPC(8): A01N65/26A01N25/04A01P7/02A01P7/04
Inventor 霍清杨晓芳
Owner 蚌埠圣丹生物化工有限公司
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