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Thiamethoxam and dimehypo-containing insecticidal effervescent tablet applied to paddy fields by broadcasting and preparation method and application thereof

A technology of effervescent tablets and thiamethoxam, applied in the field of pesticides, can solve the problems of increasing contact opportunities of natural enemies and pollinators such as bees, narrow insecticidal spectrum, and increasing the chance of direct contact with pesticides

Inactive Publication Date: 2020-10-23
SHANDONG JINGBO PETROCHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Both thiamethoxam and dimehypo are broad-spectrum insecticides, which can be used to control pests in paddy fields. However, with the increase of the application period, there are disadvantages such as pest resistance, narrow insecticidal spectrum, and large dosage. Not only increased costs, but also increased environmental pressure
The combination of the two can solve the above problems, but there is no compound product of the two, so it will be of great significance to study their compound preparation for practical application
[0005] In addition, the dosage forms of thiamethoxam and dimehypo are mostly wettable powders and water-dispersible granules. These dosage forms need to be applied in the form of spraying. This method of application is labor-intensive, time-consuming, and labor-intensive. The utilization rate of the pesticide is low, which increases the chance of direct contact between the agent and people, and increases the danger to the sprayer; spraying the pesticide in the form of spray increases the chance of contact with pollinators such as natural enemies and bees. The contact method results in indiscriminate damage to natural enemies and beneficial insects such as bees

Method used

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  • Thiamethoxam and dimehypo-containing insecticidal effervescent tablet applied to paddy fields by broadcasting and preparation method and application thereof
  • Thiamethoxam and dimehypo-containing insecticidal effervescent tablet applied to paddy fields by broadcasting and preparation method and application thereof
  • Thiamethoxam and dimehypo-containing insecticidal effervescent tablet applied to paddy fields by broadcasting and preparation method and application thereof

Examples

Experimental program
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Effect test

preparation example Construction

[0046] The present invention also provides a kind of preparation method of above-mentioned insecticidal effervescent tablet, comprises the following steps:

[0047] (1) Mix and pulverize the active ingredient, the acid source of the disintegrant, part of the dispersant, part of the wetting agent and part of the filler, and then granulate to obtain Granule A;

[0048] (2) Mix and pulverize the disintegrant alkali source, the remaining part of the dispersant, the remaining part of the wetting agent and the remaining part of the filler, and then granulate to obtain Granule B;

[0049] (3) The granule A and the granule B are mixed and pressed into tablets to obtain insecticidal effervescent tablets.

[0050] In the present invention, the mass ratio of the part of the dispersant to the remaining part of the dispersant is 1:1;

[0051] The mass ratio of the part of the wetting agent to the remaining part of the wetting agent is 1:1;

[0052] The mass ratio of the part of the fille...

Embodiment 1

[0063] Example 1 30% thiamethoxam·sultap effervescent tablet

[0064] Formula: thiamethoxam 20%, dimehypo 10%, dispersant polynaphthalene sulfonate 3%, maleic acid-acrylic acid copolymer salt 3%, wetting agent fatty alcohol polyoxyethylene ether sodium sulfate 0.5%, N - Methyl taurine sodium salt 1.5%, disintegrant acid source malic acid 15%, disintegrant alkali source potassium carbonate 20%, filler corn starch supplement 100%.

[0065] The preparation method is as follows: fully mix all the thiamethoxam, all the dimehypo, half of the total mass of the dispersant, wetting agent and filler with the acid source of the disintegrating agent, and then carry out ultra-micro airflow pulverization to obtain 750 mesh fine powder powder, and then knead the resulting fine powder with an appropriate amount of water (3-5 wt% water in material quality) in a kneader, and granulate through a swing granulator to obtain granules of about 20 meshes. The granules are dried at 60°C and set aside ...

Embodiment 2

[0066] Example 2 30% thiamethoxam·sultap effervescent tablet

[0067] The effervescent tablet formulation and preparation method are the same as in Example 1, except that the weight of the effervescent tablet is 0.5g.

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Abstract

The invention provides a thiamethoxam and dimehypo-containing insecticidal effervescent tablet applied to a paddy field. The effervescent tablet is characterized by comprising effective components andauxiliary materials, and the effective components are thiamethoxam and dimehypo in a mass ratio of (1-60): (1-60). Thiamethoxam and dimehypo are compounded, the advantages of thiamethoxam and dimehypo are effectively played, the obtained product is excellent in quality and good in pesticide effect and can be used for preventing and controlling pests in paddy fields, and the prevention effect is obviously higher than that of single thiamethoxam or single dimehypo. The insecticidal composition disclosed by the invention can obviously save the economic cost, reduce the residual quantity of the insecticide in agricultural products and the environment, delay the generation of insecticide resistance of pests and prolong the service life of the insecticide, and has important economic significance, environmental protection significance and ecological significance.

Description

technical field [0001] The invention belongs to the technical field of pesticides, and in particular relates to an insecticidal effervescent tablet containing thiamethoxam and dimehypo used in paddy fields by spreading and its preparation method and application. Background technique [0002] Thiamethoxam, English common name: thiamethoxam, chemical name: 3-(2-chloro-1,3-thiazol-5-ylmethyl)-5-methyl-1,3,5-oxadiazine-4- Forked (nitro) amines are white crystals. Thiamethoxam is a second-generation neonicotinoid high-efficiency and low-toxic insecticide with a new structure. It has stomach toxicity, contact killing, and systemic effects on pests, and has the characteristics of fast action speed and long-lasting effect. Thiamethoxam can effectively control Lepidoptera, Coleoptera, and Thysanoptera pests, such as various aphids, leafhoppers, whiteflies, planthoppers, thrips, scale insects, yellow-striped flea beetles, etc., especially for aphids, Planthoppers have special effect...

Claims

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Application Information

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IPC IPC(8): A01N51/00A01N41/02A01N25/34A01P7/00A01P7/04
CPCA01N25/34A01N41/02A01N51/00
Inventor 刘波潘小燕董昭苹王耀伟
Owner SHANDONG JINGBO PETROCHEM
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