A high-efficiency prevention and treatment method for the pear fruit borer

Abstract

The present application relates to the technical field of pest control, and especially to a high-efficiency prevention and treatment method for Manchurian ash shoot borer, comprising the following steps: S1, in the early and middle ten days of April, the early ten days of July and the early ten days of August, single-agent spraying is adopted, first, at the initial stage of egg hatching and the initial stage of larvae, the eggs are sprayed with dinitramine solution, then, after an interval of one month, compound A is sprayed once, and the spraying is continuously performed for three times; S2, in May, the middle and late ten days of July, the middle and late ten days of August, compound preparation 1 is sprayed, the spraying is performed once every 15-20 days, and the spraying is continuously performed for three times; S3, in May, the middle and late ten days of July, the middle and late ten days of August, compound preparation 2 is sprayed, the spraying is performed once a week, and the spraying is continuously performed for three times, and the present application can effectively solve the problem that the existing prevention and treatment technology for Manchurian ash shoot borer has poor effect and cannot effectively protect Manchurian ash shoot borer.

Description

Technical Field

[0001] This invention relates to the field of pest and disease control technology, specifically a highly efficient method for controlling the catalpa shoot borer. Background Technology

[0002] The catalpa shoot borer, also known as the catalpa leafminer, is one of the most serious pests of the catalpa tree. It primarily damages the trunks and new shoots of young catalpa seedlings in larval form. The larvae bore into the branches and shoots, feeding on them. Larval excrement and sawdust can be seen outside the borer's mouth. The damaged areas develop hollows in the center and tumor-like growths on the outside, hindering the normal transport of nutrients to the catalpa tree. Furthermore, the bored trunks are prone to wind breakage and dieback, causing young catalpa trees to stunt growth, and older trees to suffer from extensive dieback and tip dieback, damaging apical growth, affecting the tree's shape and appearance, and causing significant losses to forest farmers. In addition, the catalpa shoot borer has three generations per year. In July, there is an overlap of old and young generations, making control difficult. Generally, mature larvae burrow into 1-2 year old branches to overwinter in winter. They begin to become active in April of the following year, and the damage is severe in May and June. The second generation of larvae appears in July, and the third generation of larvae appears in August, continuing to cause damage until October. Adults usually lay eggs on leaf buds, petioles, or new shoots. The surface of the eggs has a sticky substance that can adhere to petioles and tender branches. After hatching into larvae, they begin to bore inwards into the newly emerging tender shoots, eventually hollowing out the pith and part of the cambium.

[0003] Currently, effective control of the catalpa leafminer is an important supporting technology for ensuring the construction of national reserve forests of catalpa and the healthy development of the industry. However, existing catalpa leafminer control technologies are ineffective and cannot provide efficient protection against the catalpa leafminer.

[0004] Therefore, a highly efficient method for controlling the catalpa leafminer is needed to address the problems raised in the background section. Summary of the Invention

[0005] The purpose of this invention is to provide a highly efficient method for controlling the catalpa leafminer, in order to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A highly effective control method for the catalpa shoot borer includes the following steps:

[0008] S1 was sprayed alternately with single agents in early to mid-April, early July and early August. First, diflubenzuron solution was sprayed to kill the eggs in the early stage of egg hatching and early larval stage, and then compound substance A was sprayed once a month after that, for a total of 3 sprays.

[0009] S2, apply compound agent 1 in May, mid-to-late July, and mid-to-late August respectively, once every 15-20 days, for a total of 3 applications;

[0010] S3 was applied by spraying with compound agent 2 in May, mid-to-late July, and mid-to-late August, once a week for a total of 3 times.

[0011] As a preferred embodiment of the present invention, the diflubenzuron solution in S1 is prepared by mixing diflubenzuron and purified water at a mass ratio of 1:5, the spraying interval of the diflubenzuron solution is 10-15 days, and the spraying location of the diflubenzuron solution is the trunk and leaf axils.

[0012] As a preferred embodiment of the present invention, substance A in S1 is prepared by mixing mineral oil and high-efficiency cypermethrin in a mass ratio of 19:1, wherein the mineral oil is a mixture of refined petroleum liquid hydrocarbons.

[0013] As a preferred embodiment of the present invention, when spraying compound A in step S1, it is necessary to first dilute compound A, and the dilution factor of compound A is 1000.

[0014] As a preferred embodiment of the present invention, the compound agent 1 in S2 is prepared by mixing chlorpyrifos and compound substance A after dilution, and the concentration of chlorpyrifos is 40%.

[0015] As a preferred embodiment of the present invention, when configuring compound agent 1, the dilution factor of chlorpyrifos is 1000, and the dilution factor of compound substance A is 800-1000.

[0016] As a preferred embodiment of the present invention, the compound agent 2 is prepared by mixing high-chlorpyrifos, imidacloprid and compound substance B after dilution. When preparing the compound agent, the dilution ratio of high-chlorpyrifos is 800-1000, the dilution ratio of imidacloprid is 1000 times, and the dilution ratio of compound substance B is 500-800.

[0017] As a preferred embodiment of the present invention, the content of the active ingredient in the high-chlorpyrifos salt is 5%, wherein the content of emamectin benzoate is 0.3% and the content of high-efficiency cypermethrin is 4.7%.

[0018] As a preferred embodiment of the present invention, the composite substance B is prepared by mixing and diluting chlorpyrifos, thiamethoxam and diflubenzuron in a mass ratio of 13:8:10, and the dilution factor when preparing the composite substance B is 800.

[0019] As a preferred embodiment of the present invention, the concentration of imidacloprid is 70%.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. In this invention, diflubenzuron solution and compound substance A are alternately sprayed in early to mid-April, early July, and early August, respectively. Diflubenzuron solution can affect the respiratory metabolism and DNA and protein metabolism during embryonic development of the catalpa borer, causing the larvae to lack chitin and thus fail to hatch or die immediately after hatching. Furthermore, it can hinder the formation of the new epidermis, delaying development, or causing a lack of hardness, preventing normal molting and leading to death or the formation of deformed pupae. Meanwhile, the highly efficient cypermethrin in compound substance A interacts with sodium channels in the catalpa borer's nervous system... This method disrupts the nervous system of the catalpa leafminer. Using diflubenzuron solution and compound substance A to kill the eggs and newly hatched larvae of the catalpa leafminer is effective. Alternating spraying can delay the acquisition of resistance by the eggs and newly hatched larvae. Then, in May, late July, and late August, compound agent 1 is sprayed, once every 15-20 days, for a total of 3 sprays. Spraying is carried out when the catalpa leafminer larvae are rapidly growing and the second generation of larvae are hatching. The chlorpyrifos in compound agent 1 has triple effects: stomach poison, contact poison, and fumigation poisoning. Its function, combined with compound substance A, is to effectively kill the rapidly growing larvae of the catalpa leafminer, reducing the damage caused by the larvae to the catalpa trees. It also kills the second-generation larvae during their egg stage, reducing the workload of later pest control. Finally, compound agent 2 is sprayed in May, late July, and late August, once a week for three consecutive times. When the third-generation larvae emerge, they are sprayed again. The imidacloprid in compound agent 2 works synergistically with the emamectin benzoate and lambda-cyhalothrin in the abamectin benzoate solution to kill the catalpa leafminer larvae. The blockage of the central nervous system in caterpillars hinders the motor nerves of the larvae, causing them to become paralyzed and die. This effect is rapid and effective. The thiamethoxam in compound substance B can severely interfere with the formation of various ectodermal sarcodactyl organs during the embryonic development of caterpillars, causing them to die during embryonic development. Together with diflubenzuron, it can effectively kill caterpillar eggs and effectively eliminate the third generation of caterpillar larvae, preventing them from surviving. Since the third generation of caterpillar larvae cannot survive and lay a new generation of eggs, it can reduce the number of caterpillar larvae in the following year, thus helping to control the caterpillar infestation in the following year. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] Unless otherwise defined, 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 invention pertains. The terminology used herein in the specification of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0024] This invention provides a technical solution:

[0025] A highly effective control method for the catalpa shoot borer includes the following steps:

[0026] S1 was sprayed alternately with single agents in early to mid-April, early July and early August. First, diflubenzuron solution was sprayed to kill the eggs in the early stage of egg hatching and early larval stage, and then compound substance A was sprayed once a month after that, for a total of 3 sprays.

[0027] S2, apply compound agent 1 in May, mid-to-late July, and mid-to-late August respectively, once every 15-20 days, for a total of 3 applications;

[0028] S3 was applied by spraying with compound agent 2 in May, mid-to-late July, and mid-to-late August, once a week for a total of 3 times.

[0029] Furthermore, the diflubenzuron solution in S1 is prepared by mixing diflubenzuron and purified water at a mass ratio of 1:5. The spraying interval of the diflubenzuron solution is 10-15 days, and the spraying location of the diflubenzuron solution is the trunk and leaf axils.

[0030] Furthermore, substance A in S1 is prepared by mixing mineral oil and high-efficiency cypermethrin in a mass ratio of 19:1, and the mineral oil is a mixture of refined petroleum liquid hydrocarbons.

[0031] Furthermore, when spraying compound A in S1, compound A needs to be diluted first, and the dilution ratio of compound A is 1000.

[0032] Furthermore, in S2, the compound agent 1 is prepared by mixing chlorpyrifos and compound A substance after dilution, and the concentration of chlorpyrifos is 40%.

[0033] Furthermore, when configuring compound agent 1, the dilution factor of chlorpyrifos is 1000, and the dilution factor of compound substance A is 800-1000.

[0034] Furthermore, the compound agent 2 is prepared by mixing high-chlorpyrifos, imidacloprid and compound substance B after dilution. When preparing the compound agent, the dilution ratio of high-chlorpyrifos is 800-1000, the dilution ratio of imidacloprid is 1000 times, and the dilution ratio of compound substance B is 500-800.

[0035] Furthermore, the effective ingredient content of the high-chlorpyrifos salt is 5%, of which the content of emamectin benzoate is 0.3% and the content of high-efficiency cypermethrin is 4.7%.

[0036] Furthermore, the compound B substance is prepared by mixing and diluting chlorpyrifos, thiamethoxam and diflubenzuron in a mass ratio of 13:8:10, and the dilution factor when preparing the compound B substance is 800.

[0037] Furthermore, the concentration of the imidacloprid is 70%.

[0038] Specific implementation examples:

[0039] In early to mid-April, early July, and early August, single-agent alternating sprays were used. First, diflubenzuron solution was sprayed to kill eggs in the early stages of egg hatching and larval development. The diflubenzuron solution was prepared by mixing diflubenzuron and purified water at a mass ratio of 1:5. The spraying interval for the diflubenzuron solution was 10-15 days. The diflubenzuron solution was sprayed on the trunk and leaf axils. Then, compound substance A was sprayed once a month. Substance A was prepared by mixing mineral oil and high-efficiency cypermethrin at a mass ratio of 19:1. The mineral oil was a mixture of refined petroleum liquid hydrocarbons. When spraying compound substance A, it was necessary to dilute it first. The dilution ratio of compound substance A was 1000. Three consecutive sprays were applied. The larval population rate of excellent catalpa clones (9-1, 8401, 19-27) and grafted catalpa clones was investigated.

[0040] Compound pesticide 1 was applied in May, late July, and late August. Compound pesticide 1 was prepared by mixing chlorpyrifos and compound substance A after dilution. The concentration of chlorpyrifos was 40%. When preparing compound pesticide 1, the dilution ratio of chlorpyrifos was 1000 and the dilution ratio of compound substance A was 800-1000. It was sprayed once every 15-20 days and sprayed for three consecutive times. The survival rate of larvae in catalpa seedlings in the experimental forest was investigated.

[0041] Compound pesticide 2 was applied in May, late July, and late August. Compound pesticide 2 was prepared by mixing high-chlorpyrifos, imidacloprid, and compound substance B after dilution. The dilution ratio of high-chlorpyrifos was 800-1000, the dilution ratio of imidacloprid was 1000 times, and the dilution ratio of compound substance B was 500-800. The active ingredient content of high-chlorpyrifos was 5%, of which the content of emamectin benzoate was 0.3% and the content of high-efficiency cypermethrin was 4.7%. Compound substance B was prepared by mixing and diluting chlorpyrifos, thiamethoxam, and diflubenzuron in a mass ratio of 13:8:10. The dilution ratio of compound substance B was 800, and the concentration of imidacloprid was 70%. It was sprayed once a week for three consecutive times. The survival rate of larvae in the comparative test forest and regional test forest of Catalpa cultivar was investigated.

[0042] Based on the survey results, the survival rate of catalpa shoot borer larvae on catalpa seedlings was obtained, as shown in Table 1:

[0043] Table 1. Survival rate of catalpa shoot borer larvae on catalpa seedlings.

[0044]

[0045]

[0046] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A method for efficiently preventing and treating a canthocamites tip moth, characterized by, The method comprises the following steps: S1, in the early and middle of April, the early of July and the early of August, respectively, single-agent alternation spraying is adopted, first, at the initial egg hatching and larva initial stage, a dimethipin solution is sprayed to kill eggs, then, once every month, a compound A substance is sprayed, and the spraying is continuously performed for three times, the dimethipin solution is prepared by mixing dimethipin and pure water according to a mass ratio of 1:5, the spraying interval of the dimethipin solution is 10-15 days, and the spraying position of the dimethipin solution is the trunk and leaf axil, the compound A substance is prepared by mixing mineral oil and high-efficiency cypermethrin according to a mass ratio of 19:1, and the mineral oil is a mixture of petroleum refined liquid hydrocarbon; S2, in May, the middle and late of July, the middle and late of August, respectively, a compound preparation 1 is sprayed, the spraying is performed once every 15-20 days, and the spraying is continuously performed for three times, the compound preparation 1 is prepared by mixing chlorpyrifos and the compound A substance after dilution, the concentration of the chlorpyrifos is 40%, the dilution multiple of the chlorpyrifos is 1000, and the dilution multiple of the compound A substance is 800-1000; S3, in May, the middle and late of July, the middle and late of August, respectively, a compound preparation 2 is sprayed, the spraying is performed once a week, and the spraying is continuously performed for three times, the compound preparation 2 is prepared by mixing high-chlorine emamectin benzoate, imidacloprid and a compound B substance after dilution, the compound B substance is prepared by mixing chlorpyrifos, buprofezin and dimethipin according to a mass ratio of 13:8:10 and after dilution, when the compound preparation 2 is prepared, the dilution multiple of the high-chlorine emamectin benzoate is 800-1000, the dilution multiple of the imidacloprid is 1000 times of liquid, and the dilution multiple of the compound B substance is 500-800.

2. The method of claim 1, wherein the method is characterized by When the compound A substance is sprayed in S1, the compound A substance needs to be diluted, and the dilution multiple of the compound A substance is 1000.

3. The method of claim 1, wherein the method is characterized by The effective ingredient content of the high-chlorine emamectin benzoate is 5%, the content of emamectin benzoate is 0.3%, and the content of high-efficiency cypermethrin is 4.7%.

4. The method of claim 1, wherein the method is characterized by The dilution multiple when the compound B substance is prepared is 800.

5. The method of claim 1, wherein the method is characterized by The concentration of the imidacloprid is 70%.

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