CN106797951A - A kind of dry insecticide of the note for preventing and treating corythucha ciliate and its preparation method and application - Google Patents

Abstract

The invention discloses a dry-injection insecticide for preventing and treating sycamore stink bugs, a preparation method and an application thereof. The dry-injected insecticide for preventing and controlling sycamore syringa has a long effective time, and compared with the existing insecticide spraying, it has good effect, saves time and effort, and avoids environmental pollution; the preparation method has simple process and low cost; This application is not affected by the weather and the height of the tree. All the pesticides enter the plant without harming natural enemies and can be used for a long time. The dry-injection insecticide of the invention has long-lasting and stable drug effect, is not prone to hydrolysis, effectively avoids the disadvantages of existing tree trunk injections for immediate use and preparation, reduces the burden on users, and is suitable for industrial production. The dry-injecting insecticide for controlling Platanus chinensis includes the following raw materials in mass percentage: 1% to 50% of thiacloprid raw powder, 0.1% to 20% of acephate raw powder, and surfactant 1% to 10%, the remainder is solvent.

Description

A kind of dry-injection insecticide for preventing and controlling sycamore stinkbug and its preparation method and application

technical field

The invention belongs to the technical field of tree pest control, and in particular relates to a dry-injected insecticide for preventing and treating sycamore syringa stinkbug, a preparation method and application thereof.

Background technique

Corythucha ciliata (Say) is an invasive pest introduced into my country in recent years, and it is an important piercing-sucking pest on the Platanus genus Platanus in the family Platanaceae. In less than 10 years, it has spread rapidly throughout most of the Yangtze River Basin, and has spread to Shaanxi, Shandong and Beijing in the north, with an obvious trend of continuing to spread north and south. The insect clusters as adults and nymphs on the back of the host leaves to pierce and suck the juice, initially causing yellow and white spots and leaves chlorosis, and in severe cases, the leaves start to dry from the veins to the whole leaves chlorosis, black and necrosis, resulting in early leaf fall and tree growth. breakage, tree weakening, and even death.

At present, organic phosphorus insecticides such as malathion, fenitrothion, and acephate, pyrethroid insecticides such as deltamethrin, and nicotine such as imidacloprid, acetamiprid, and thiamethoxam are sprayed on the ground. Insecticide-like insecticides are the main technical measures for the control of sycamore stinkbug. Yet adopt above-mentioned method to be used for the prevention and control of Platanus chinensis, although certain control effect can be reached, the environmental pollution that brings along with it and the harm to environment beneficial organism, have the report to point out, when using spraying method to prevent and control, can cause More than 90% of the liquid medicine is sprayed into the environment, endangering the beneficial organisms in the environment and destroying the ecological balance.

In order to improve the utilization rate of pesticides and protect the environment, researchers at home and abroad have used various injection (injection) devices to inject pesticides into tree trunks since the 1920s. Conductive tissue is transported to various parts of the tree. The pest control agent of this method does not drift, does not contact with the surrounding environment, and avoids the harm of pesticides to humans, animals and beneficial insects. However, because trunk injection is a new technology for fruit trees and forest management, it is extremely difficult to buy special medicines on the market. People usually use existing spray agents to dilute them and inject them into trunks. Decomposition or hydrolysis failure phenomenon. Therefore, in the prior art, there is still a lack of effective solutions for the prevention and treatment of the sycamore bug problem.

Contents of the invention

The technical problem to be solved by the present invention is to provide a dry-injected insecticide for preventing and treating sycamore scutellaria and its preparation method and application. Compared with insecticide spraying, the effect is better, saving time and effort, and avoiding environmental pollution; the preparation method is simple in process and low in cost; the application is not affected by the weather and the height of the tree, and all the pesticides enter the plant without harming the environment. Natural enemies, can be used for a long time.

To achieve the above object, the present invention adopts the following technical solutions:

The first aspect of the present invention provides a dry-injection insecticide for preventing and treating sycamore stinkbug, which includes the following raw materials in mass percentages: 0.1% to 20% thiacloprid raw powder, 0.1% to 60% acetyl form Aminophos original powder, 1% to 10% surfactant, the rest is solvent.

Wherein the surfactant is octylphenol polyoxyethylene ether, sorbitan trioleate, polyethylene glycol fatty acid ester, sorbitan monooleate, lauryl polyoxyethylene ether, dehydrated One or more of sorbitol polyoxyethylene ether and fatty alcohol polyoxyethylene ether.

Preferably, the surfactant is octylphenol polyoxyethyl ether and lauryl polyoxyethylene ether, and the volume ratio of the octylphenol polyoxyethylene ether and lauryl polyoxyethylene ether is 1:2;

Wherein the solvent is one or more of tetrahydrofurfuryl alcohol, dimethyl sulfoxide, dimethylformamide, methanol, isopropanol, and ethylene glycol dimethyl ether.

Preferably, the solvent is tetrahydrofurfuryl alcohol or dimethyl sulfoxide;

Preferably, the dry-injection insecticide for controlling Platanus chinensis includes the following raw materials in mass percentage:

1% to 10% of thiacloprid raw powder, 1% to 40% of acephate raw powder, 1% to 10% of surfactant, and the rest is solvent;

Wherein, the surfactant is octylphenol polyoxyethyl ether and lauryl polyoxyethylene ether, and the volume ratio of the octylphenol polyoxyethylene ether and lauryl polyoxyethylene ether is 1:2;

Described solvent is tetrahydrofurfuryl alcohol or dimethyl sulfoxide;

The second aspect of the present invention provides a method for preparing a dry-injected insecticide for controlling Platanus chinensis, comprising the following steps: dissolving the original drug of thiacloprid and the original drug of acephate in a surfactant, Then add a solvent, adjust the pH to 5-7, stir, and after standing still, a homogeneous transparent liquid is obtained, that is, a dry injection insecticide is obtained.

The invention also includes the application of the dry-injected insecticide in the prevention and control of the sycamore stinkbug.

Preferably, the specific method of the application is:

(1) One drill hole with a ground diameter of less than 15cm, two drill holes with a ground diameter of 15-30cm, and three drill holes with a ground diameter of more than 30cm;

(2) The drilling height is 10-50cm from the ground, preferably 20-30cm;

(3) Injection dose: Inject 0.5-1 ml of drug per 1 cm breast diameter.

In the present invention, one type of thiacloprid is a broad-spectrum, systemic neonicotinoid insecticide, which has a good killing effect on pests with piercing and sucking mouthparts. It acts on nicotinic acid acetylcholine receptors, has no cross-resistance with organophosphate, carbamate, and pyrethroid conventional insecticides, and can be used for resistance management.

Acephate, also known as acephate, is a low-toxic insecticide. Acephate is an oral insecticide. It has stomach toxicity and contact killing effects, and can kill eggs. It has a certain fumigation effect and is a slow-acting insecticide. Insecticide, suitable for vegetables, tea trees, tobacco, fruit trees, cotton, rice, wheat, rapeseed and other crops, control a variety of chewing, piercing and sucking mouthparts pests and mites and hygiene pests.

The inventor found in the experimental research that the combined use of thiacloprid and acephate has the following advantages: 1. The respective toxic effects are synergistically promoted and mutually synergistic; 2. The duration of the pesticide is prolonged and the insecticidal effect is good. The amount of medicine is reduced, and the control cost is reduced; 3. It has good compatibility with the surrounding environment, is safe for natural enemies of pests and humans and animals, and pests are not easy to develop resistance to pesticides.

Moreover, the inventor finds that not all pesticides can be used for trunk injection through field tests, such as organophosphorus pesticide dimethoate, which is found to have poor conduction in the plane tree after injection, and the pest control effect is not good.

At the same time, the inventors unexpectedly discovered in the research that after the combined use of thiacloprid and acephate in a certain proportion, in addition to the synergistic effect of each other, the stability can be significantly improved, and the degree of hydrolysis is significantly reduced after adding the solvent. It is stable, can be stored for a long time, effectively avoids the disadvantages of existing trunk injections that are used and prepared immediately, and is suitable for industrial production.

The beneficial effects of the present invention are:

(1) After the dry-injected insecticide of the present invention is injected into the wood of the tree, the medicinal liquid is transferred to the whole body of the tree by means of the transportation of water in the tree, thereby realizing the precise control of the sycamore stinkbug;

(2) The utilization rate of the dry injection insecticide of the present invention is high, and the medicine is not restricted by environmental conditions such as wind and rain, light decomposition, etc. It can be used no matter it is rainy, windy or drought and water shortage, and there will be no large amount of insecticides during spray control. In the case of drug drift and loss, it is especially suitable for use in arid and water-scarce areas;

(3) The present invention injects dry insecticide to prevent and control pests, and is not affected by the weather and the height of the tree body. The pesticides all enter the plant body, and the one-time application is effective throughout the year without harming natural enemies. It can be used for a long time, and the injection hole can be healed in the same year. It has little damage to the tree body and low labor intensity, so it is very suitable for the control of Platanus chinensis;

(4) The dry-injection insecticide of the present invention has long-lasting drug effect, is stable, is not prone to hydrolysis, effectively avoids the disadvantages of existing trunk injections that are ready-to-use and ready-to-use, reduces the burden on users, and is suitable for industrial production.

detailed description

It should be pointed out that the following detailed description is exemplary and intended to provide further explanation to the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly dictates otherwise, the singular is intended to include the plural, and it should also be understood that when the terms "comprising" and/or "comprising" are used in this specification, they mean There are features, steps, operations, means, components and/or combinations thereof.

As introduced in the background technology, trunk injection application in the prior art is a new technology for fruit trees and forest management. It is extremely difficult to buy special drugs on the market. Phenomena of drug damage at the injection port, drug photolysis or hydrolysis failure. In order to solve the above problems, the application proposes a dry-injection insecticide for preventing and treating sycamore stinkbug.

In a typical implementation of the present application, there is provided a dry-injection insecticide for controlling Platanus chinensis, comprising the following raw materials in mass percentages: 0.1% to 20% of thiacloprid raw powder, 0.1% to 60% % acephate original powder, 1% to 10% surfactant, and the rest is solvent.

Wherein the surfactant is octylphenol polyoxyethylene ether, sorbitan trioleate, polyethylene glycol fatty acid ester, sorbitan monooleate, lauryl polyoxyethylene ether, dehydrated One or more of sorbitol polyoxyethylene ether and fatty alcohol polyoxyethylene ether.

Described tensio-active agent is preferably octylphenol polyoxyethyl ether and lauryl alcohol polyoxyethylene ether, and the volume ratio of described octylphenol polyoxyethyl ether and lauryl alcohol polyoxyethylene ether is 1:2; Use above-mentioned The use of surfactants is not only beneficial to the stable existence of the medicament in the solvent, but also can inhibit the hydrolysis and photolysis of the medicament to a certain extent.

Wherein the solvent is one or more of tetrahydrofurfuryl alcohol, dimethyl sulfoxide, dimethylformamide, methanol, isopropanol, and ethylene glycol dimethyl ether.

Preferably, the solvent is tetrahydrofurfuryl alcohol or dimethyl sulfoxide; using the above-mentioned solvent can effectively dissolve the medicament, and the medicament is stable;

In another embodiment of the present application, the dry-injected insecticide for the control of Platanus chinensis includes the following raw materials in mass percentage:

1% to 10% of thiacloprid raw powder, 1% to 40% of acephate raw powder, 1% to 10% of surfactant, and the rest is solvent;

Wherein, the surfactant is octylphenol polyoxyethyl ether and lauryl polyoxyethylene ether, and the volume ratio of the octylphenol polyoxyethylene ether and lauryl polyoxyethylene ether is 1:2;

Described solvent is tetrahydrofurfuryl alcohol or dimethyl sulfoxide;

In yet another embodiment of the present application, a method for preparing a dry-injected insecticide for controlling Platanus chinensis is provided, comprising the following steps: dissolving thiacloprid and acephate in surfactant Add a solvent to the agent, adjust the pH to 5-7, stir, and let it stand to obtain a homogeneous transparent liquid, which is a dry injection insecticide.

In yet another embodiment of the present application, the application of the above-mentioned dry-injecting insecticide in the control of Platanus chinensis is provided.

Wherein, the concrete method of described application is:

(1) One drill hole with a ground diameter of less than 15cm, two drill holes with a ground diameter of 15-30cm, and three drill holes with a ground diameter of more than 30cm;

(2) The drilling height is 10-50cm from the ground, preferably 20-30cm;

(3) Injection dose: Inject 0.5-1 ml of drug per 1 cm breast diameter.

In order to enable those skilled in the art to understand the technical solution of the present application more clearly, the technical solution of the present application will be described in detail below in combination with specific examples and comparative examples.

Example 1. Preparation of 13% thiacloprid acephate dry injection liquid: 3 grams of thiacloprid, 10 grams of acephate, 3 ml of octylphenol polyoxyethyl ether and 6 ml of polyoxyethylene lauryl alcohol Ether was prepared by dissolving it with dimethyl sulfoxide and distilling it to 100ml.

Example 2. The preparation of 37% thiacloprid acephate injection dry solution: 2 grams of thiacloprid, 35 grams of acephate, add 3ml octylphenol polyoxyethyl ether and 6ml lauryl polyoxyethylene Ether, dissolved in tetrahydrofurfuryl alcohol and adjusted to 100ml that is the system.

Example 3. The preparation of 24% thiacloprid acephate injection dry solution: 4 grams of thiacloprid, 20 grams of acephate, add 5ml octylphenol polyoxyethyl ether and 10ml lauryl polyoxyethylene Ether was prepared by dissolving it with dimethyl sulfoxide and distilling it to 100ml.

Example 4. The preparation of 30% thiacloprid acephate injection dry solution: 10 grams of thiacloprid, 20 grams of acephate, add 5ml octylphenol polyoxyethyl ether and 10ml lauryl polyoxyethylene Ether, dissolved in tetrahydrofurfuryl alcohol and adjusted to 100ml that is the system.

Example 5. Preparation of 50% thiacloprid acephate dry injection liquid: 10 grams of thiacloprid, 40 grams of acephate, 5 ml of octylphenol polyoxyethyl ether and 10 ml of polyoxyethylene lauryl alcohol Ether, dissolved in tetrahydrofurfuryl alcohol and adjusted to 100ml that is the system.

Comparative example 1. preparation method is the same as embodiment 1, and difference is not to add acephate;

Comparative example 2. The preparation method is the same as in Example 1, except that thiacloprid is not added.

Experiment on Stability Effect of Dried Injection Insecticides

Place the dry injection insecticides prepared in Examples 1-5 and Comparative Examples 1-2 for 90 days, take the medicines at 1d, 10d, 40d, and 90d and use GC-MS to calculate the amount of insecticides in each medicine, calculator Degradation rate, the results are shown in Table 1:

Table 1 Injection dry insecticide degradation rate

It is not difficult to see from the examples and comparative examples that the active ingredients of the prepared medicament are rapidly hydrolyzed by using only thiacloprid and acephate, and after using the ratio of thiacloprid and acephate The degradation rates of both drugs were significantly reduced, indicating that the combined use of the two can significantly reduce the degree of hydrolysis and photolysis of the two, and maintain high drug properties for a long time.

field verification experiment

In order to verify the control effect of the dry injection liquid agent of the present invention to the sycamore sycamore, the field efficacy test of the dry injection liquid agent injection and dry spraying is carried out to control the sycamore sycamore, and the specific test results are as follows:

1. Test material

1.1 Drugs to be tested

Embodiment 1-5 and comparative example 1-2

1.2 Test equipment

Portable rechargeable hand drill (Bosch GBM 13RE), self-flowing tree trunk injector (Zhejiang Senba Forestry Pest Control Company).

1.3 Overview of the test site

A sycamore forest in Zhangliuxu Village, Xinglong Town, Linyi County, Shandong Province. The diameter at breast height is 8-10cm, the tree height is 5-7m, and the crown width is 2.6m.

2. Test method

On July 20, 2016, a portable rechargeable hand drill (drill diameter 6mm) was used to drill a round hole with a depth of 3 to 4 cm at the base of the trunk 25 cm from the ground and 45° downward, and cut open the front end of the injector containing 8 ml of medicine. Then insert the punched tree hole. Each drug was used to treat 5 strains, and water treatment was used as a control. Mark a branch in the east, west, south and north directions of each tree before and 7d, 15d, and 30d after the medicine, and count the occurrence of sycamore stink bugs within 50cm of the top tip.

3. Results and Analysis

Table 2 Control effect of different concentrations of dry liquid injection on Platanus chinensis

The control effect of injection dry liquid agent of different concentrations is shown in Table 2 to the control effect of Platanus chinensis, and the quick effect of injection dry liquid agent of embodiment 3-5 is better, and the control effect of one day after medicine just reaches more than 90%; And each embodiment The control effects of all the medicaments have reached 100% 10 days after the application, and the drug effects can be maintained for more than 40 days. And comparative example 1-2 quick-acting performance and embodiment disparity disparity greatly, and final control effect is also relatively poor.

The test results show that, after using thiacloprid and acephate in a certain proportion, the stability of the dry injection insecticide of the present invention is remarkably improved in addition to the synergistic effect, and the degree of hydrolysis is remarkably reduced after adding the solvent. , the solvent is stable and can be stored for a long time, which effectively avoids the disadvantages of existing trunk injections for immediate use and preparation, and is suitable for industrial production.

Simultaneously, the dry injecting liquid agent used for preventing and treating the sycamore stinkbug has a good control effect on the syringa syringa stinkbug, has a long duration of effect, and can effectively curb the rapid local spread of the sycamore syringa stinkbug.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, there may be various modifications and changes in the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims (10)

1. A dry-injecting insecticide for controlling Platanus chinensis, characterized in that it comprises the raw materials of the following mass percentages: 0.1% to 20% thiacloprid former powder, 0.1% to 60% acephate Original powder, 1% to 10% surfactant, and the rest is solvent. 2. a kind of injection dry insecticide of preventing and treating sycamore stinkbug as claimed in claim 1, is characterized in that, wherein said tensio-active agent is octylphenol polyoxyethylene ether, sorbitan trioleic acid One or more of esters, polyethylene glycol fatty acid esters, sorbitan monooleate, lauryl polyoxyethylene ether, sorbitan polyoxyethylene ether, fatty alcohol polyoxyethylene ether. 3. a kind of injection dry insecticide of preventing and treating sycamore as claimed in claim 2, is characterized in that, described tensio-active agent is octylphenol polyoxyethyl ether and polyoxyethylene lauryl ether, The volume ratio of the octylphenol polyoxyethyl ether to lauryl alcohol polyoxyethylene ether is 1:2. 4. a kind of injection dry insecticide of preventing and treating Platanus chinensis as claimed in claim 1, is characterized in that, described solvent is tetrahydrofurfuryl alcohol, dimethyl sulfoxide, dimethylformamide, methyl alcohol, One or more of isopropanol and ethylene glycol dimethyl ether. 5. a kind of as claimed in claim 4 prevents and cures the injection dry insecticide of Platanus chinensis, is characterized in that, described solvent is tetrahydrofurfuryl alcohol or dimethyl sulfoxide. 6. as claimed in claim 1, the injection dry insecticide of preventing and controlling Platanus chinensis, is characterized in that, comprises the raw material of following mass percent: 0.1% to 20% of thiacloprid raw powder, 0.1% to 60% of acephate raw powder, 1% to 10% of surfactant, and the rest is solvent; Wherein, the surfactant is octylphenol polyoxyethyl ether and lauryl polyoxyethylene ether, and the volume ratio of the octylphenol polyoxyethylene ether and lauryl polyoxyethylene ether is 1:2; The solvent is tetrahydrofurfuryl alcohol or dimethyl sulfoxide. 7. A preparation method for injecting insecticides for controlling Platanus chinensis, characterized in that it comprises the following steps: dissolving the former drug of thiacloprid and the former drug of acephate in the surfactant, and then adding Solvent, stirring, and standing still to obtain a homogeneous transparent liquid, that is, to prepare a dry injection insecticide. 8 . The preparation method of a dry-injected insecticide for controlling Platanus chinensis as claimed in claim 7 , wherein the pH of the injected insecticide is 5-7. 9 . 9. The application of the injection dry insecticide described in any one of claims 1-6 in the control of Platanus chinensis. 10. The application according to claim 9, wherein the specific method of the application is: (1) One drill hole with a ground diameter of less than 15cm, two drill holes with a ground diameter of 15-30cm, and three drill holes with a ground diameter of more than 30cm; (2) The drilling height is 10-50cm from the ground, preferably 20-30cm; (3) Injection dose: Inject 0.5-1 ml of the drug per 1 cm breast diameter.