CN1047502C

CN1047502C - Compound pesticide of DDVP and fenpropathrin

Info

Publication number: CN1047502C
Application number: CN96103448A
Authority: CN
Inventors: 赵明智; 赵贵生
Original assignee: Individual
Current assignee: Individual
Priority date: 1996-03-20
Filing date: 1996-03-20
Publication date: 1999-12-22
Anticipated expiration: 2016-03-20
Also published as: CN1159882A

Abstract

The present invention relates to a compound preparation of DDVP and fenpropathrin, which is characterized in that the present invention is prepared from 32 to 50% of DDVP, 40 to 50% of fenpropathrin and 10 to 18% of stabilizer, wherein the active ingredient content of the DDVP in the compound preparation is 25 to 40%, and the active ingredient content of the fenpropathrin is 8 to 10%. The present invention has the advantages that the stability is good, the insect disinfestation effect is high, the use quantity is little, the controlling cost is low, the efficiency is raised obviously, and the present invention is a pesticide with wide adaptability.

Description

A kind of composition pesticide that contains the dichlorvos fenpropathrin

The present invention relates to a kind of composition pesticide that contains the dichlorvos fenpropathrin.

Dichlorvos is a kind of organophosphorous pesticide, and it has insecticide efficient, quick-acting, broad spectrum activity, because the continuous use of long-term single variety produces certain pesticide resistance to insect, improves consumption and can raise the cost again; Fenpropathrin is a kind of more novel pyrethroid pesticide, and it is wide to have an insecticidal spectrum, and drug effect is rapid, knock down soon, the lasting period is long effective, same long-term the use, also will develop immunity to drugs, for this reason, the method for agriculture chemical compounding is all being adopted in countries in the world, to overcome and to delay pesticide resistance, but during some Recompounded pesticide, secondary adds emulsifier and a large amount of solvents again, and auxiliary agent has not only increased toxicity but also increased cost.

Purpose of the present invention is just in order to overcome the shortcoming and deficiency that above-mentioned prior art exists, and provide a kind of and have heatproof, water-fast nontoxic stabilizing agent carries out dichlorvos and fenpropathrin composite, thereby the assurance stable effective ingredients, drug effect is bringd into play, the insecticide of good disinsection effect.

The objective of the invention is to realize by following technical proposal:

A kind of composition pesticide that contains the dichlorvos fenpropathrin, it is characterized in that it forms by dichlorvos, fenpropathrin and stabilizing agent are composite, the each component proportioning is by weight: the dichlorvos of 80% content is 32-50%, and the fenpropathrin of 20% content is 40-50%, and stabilizing agent is 10-18%.

The dichlorvos active constituent content is 25.6-40% in the composition pesticide, and the fenpropathrin active constituent content is 8-10%, and best dichlorvos active constituent content is 25.6%, and the fenpropathrin active constituent content is 10%.

Stabilizing agent is phenolic aldehyde, azone, and they all have heatproof, water resistance, and the emulsifier of dichlorvos and fenpropathrin is dissolved each other, do not produce layering, be homogeneous state, make stable effective ingredients, thereby can give full play to drug action, can add an amount of turpentine oil dissolving during the phenolic aldehyde thickness.

Composition pesticide can make full use of the efficient of dichlorvos, quick-acting, easily decompose after broad spectrum activity characteristics and the dispenser, the longevity of residure is short, noresidue has the stomach toxicity of steaming and action of contace poison to insect, is more given full play to, fenpropathrin is a kind of comparatively novel pyrethroid pesticide, remove have the desinsection wide spectrum, drug effect rapidly, knock down fast, the lasting period is long, outside the effective characteristics, also has good mite usefulness extremely.Synergism at stabilizing agent is issued to stable and synergistic effect, dichlorvos and fenpropathrin are composite, it is the stomach toxicity of dichlorvos, tag and kill the cooperation of mite usefulness with fenpropathrin, be again that dichlorvos is efficient, the combination of quick-acting and fenpropathrin lasting effect, replenishing mutually of the different modes of action makes it to become a kind of efficient, broad spectrum insecticide.

Composition pesticide of the present invention is faint yellow homogeneous liquid, active constituent content dichlorvos is 25-40%, fenpropathrin is 8-10%, when this proportioning, reach insecticidal effect preferably, can reduce cost again, its acidity is with sulphur acid meter≤0.3%, moisture≤0.5% dilutes 200 times, qualified stability, under 54 ± 2 ℃ of conditions, heat storage 14 days, its heat storage stability, relative resolution ratio≤5% of each effective ingredient, low-temperature stability, every index detect through the quality of chemical products supervision and all meet standard.

The present composition carries out sanitary toxicology through health and epidemic prevention department and identifies that its result is as follows:

(1) the rat peroral acute toxicity test adopts administration by gavage to be tried thing, and its result of the test is: the DL of female rats ₅₀Be 108mg/kg, the LD of male rat ₅₀Be 126mg/kg.

Qualification result belongs to medium poison level.

(2) cavy adopts the patch method to be tried thing through the skin acute toxicity experience, and its experimental result is the LD of male guinea pig ₅₀Be 926mg/kg, the LD of female cavy ₅₀Be 681mg/KG, qualification result belongs to medium poison level.

(3) white family exempts from eye irritant test, adopt the composition of variable concentrations to splash into the interior method of a conjunctival sac, its experimental result be 25% concentration combination thing to the serious oedema of animal eye conjunctiva, the film muddiness is touched in hyperemia, do not recover in 72 hours, and the equal vacuum response of 0.033% concentration group all animals, 6 hours acute eye irritation score index are that eye irritation score index is 0 after 0,48 hour, qualification result is to the eye nonirritant.

The present composition carries out Toxicity Determination through the agriculture chemical examination institution to vegetables Rhopalosiphum spp worm, and co-toxicity coefficient is 172.41, and synergy is remarkable.

The present composition has carried out field control effectiveness test, and its result is as follows:

(1), control vegetable aphid field efficacy result:

Be shown in Table 1

Table 1

The seven days present composition 25 2,000 97.5 97.5 present compositions of dosage prevention effect % pesticide name g/ mu extension rate medication medication in a day, 16.7 3,000 96.4 97.3 present compositions, 12.5 4,000 95.5 98.080% DDVP, 50.0 1,000 94.1 93.520% Fenpropathrins 20.0 2,500 96.7 97.2

(2) control cabbage caterpillar field efficacy result:

Be shown in Table 2

Table 2

The seven days present composition 25 2,000 97.1 98.9 present compositions of dosage prevention effect % pesticide name g/ mu extension rate medication medication in a day, 16.7 3,000 97.4 98.7 present compositions, 12.5 4,000 95.4 98.680% DDVP, 50.0 1,000 94.7 96.420% Fenpropathrins 20.0 2,500 96.1 98.3

Drug effect result shows: present composition dilution 2000,3000,4000 times, medication control efficiency more than 95% after a day, control efficiency was more than 97% in seven days, to all effective high insecticidal action of vegetable aphid, blue or green worm, harmless to vegetables simultaneously, spider is killed and wounded greatly, aphid, blue or green worm are knocked down soon, the preventive effect height, in order to save the control cost, suggestion is promoted the use of diluted concentration and is advisable for 4000 times.

For the area of frequent use fenpropathrin, its control efficiency has only 57%, and can reach more than 90% with the present composition, as seen for having played good effect with overcoming pesticide resistance.

In addition, the present composition is to the control of maize dicladispa armigera, longan stinkbug silk worm, the paddy fly silk worm of paddy rice, fruit aphid, heart-eating worm, vegetable aphid have all carried out the field comparative trial, its control efficiency this shows that all more than 90% the present composition is a kind of broad spectrum insecticide with promotional value.

Owing to take technique scheme, make the technology of the present invention compared with the prior art have following advantage and effect:

A) said composition is a kind of broad spectrum activity agricultural insecticide of efficient, quick-acting, low-residual;

B) insecticidal effect is remarkable, but both desinsections can kill mite again, and the stupefied medicine that reaches is controlled purpose more;

C) dosage is few, and the control cost is low.

Embodiment 1:

Get the dichlorvos 32kg of 80% content, 20% content fenpropathrin 50kg and phenolic aldehyde 18kg add to mix in the blender and are homogeneous phase, are finished product.

Embodiment 2:

Get the dichlorvos 38kg of 80% content, 20% content fenpropathrin 45kg and phenolic aldehyde 17kg add to mix in the blender and are homogeneous phase, are finished product.

Embodiment 3:

Get the dichlorvos 44kg of 80% content, 20% content fenpropathrin 41kg and phenolic aldehyde 15kg add to mix in the blender and are homogeneous phase, are finished product.

Embodiment 4:

Get the dichlorvos 50kg of 80% content, 20% content fenpropathrin 40kg and azone 10kg add to mix in the blender and are homogeneous phase, are finished product.

Claims

1, a kind of composition pesticide that contains the dichlorvos fenpropathrin, it is characterized in that it forms by dichlorvos, fenpropathrin and stabilizing agent are composite, the each component proportioning is by weight: the dichlorvos of 80% content is 32-50%, and the fenpropathrin of 20% content is 40-50%, and stabilizing agent is 10-18%.

2, composition pesticide according to claim 1, it is characterized in that containing in the composition pesticide dichlorvos active constituent content is 25.6-40%, the fenpropathrin active constituent content is 8-10%.

3, composition pesticide according to claim 1 is characterized in that it is 25.6% that complex composition contains the dichlorvos active constituent content, and the fenpropathrin active constituent content is 10%.

4,, it is characterized in that described stabilizing agent is phenolic aldehyde, azone according to claim 1,2,3 described composition pesticides.

5, composition pesticide according to claim 4 can add an amount of turpentine oil when it is characterized in that the phenolic aldehyde thickness.