Attractive toxicant for killing termites and preparation method thereof

Abstract

The invention discloses an attractive toxicant for killing termites and a preparation method of the attractive toxicant, and relates to the technical field of insecticides. The attractive toxicant for killing the termites comprises the following raw materials in parts by weight: 60-90 parts of an attractant, 7-12 parts of brown sugar, 1-4 parts of an insect growth regulator, 2-4 parts of a metabolic inhibitor, 0.1-0.3 part of a novel heterocyclic ring, 1-3 parts of a termite phagostimulant and 1-3 parts of an insecticidal synergist. The termite attractant disclosed by the invention can be used for efficiently killing termites in groups, and is simple in use method and high in stability; the termite trapping and killing agent is low in raw material cost, good in termite trapping and killing effect and long in storage time.

Description

Technical Field

[0001] The invention relates to the technical field of insecticides, and in particular to an attractant for killing termites and a preparation method thereof. Background Art

[0002] Termites belong to the order Isoptera of the class Insecta of the phylum Arthropoda, and they lead a social life similar to that of ants. Termites feed on cellulose and mainly harm trees and wooden houses. Their life history is complex and they can be divided into three categories according to their living habits. The first is wood-dwelling termites, which build nests in hollows of wooden products and dead trees, feed on wood fiber, and are major pests of wooden products. The second is soil-dwelling termites, which build nests in the soil or build towers on the ground with soil, which are called anthills. The third is soil-dwelling amphibious termites, which are the most widely distributed and most harmful type of household termites. Termites cause serious damage to housing construction, agriculture, forestry, water conservancy, transportation, etc., and have caused significant economic losses.

[0003] The termite trapping method utilizes the termites' own living habits, social groups, and the inevitable connection between the worker ants that go out to find food or the worker ants lured into the box and the termites in the nest, so that the worker ants pass the agent to other termites in the nest, thereby achieving the purpose of killing the entire nest.

[0004] At present, the main varieties of termite traps used at home and abroad are benzoylureas, which are a type of insect growth regulator that affects insect growth and development by inhibiting chitin synthesis. Fluflumuron has achieved remarkable results in the control of termites. In addition, in terms of the speed of action, transmissibility, repellency, and antifeedant properties of the drugs, agents such as imidacloprid, fipronil, and ivermectin have been tested on termites and are expected to be used in termite trapping methods. The toxic agents of termite traps should have the characteristics of slow efficacy and strong transmissibility. At present, there are few types of traps and the effects are not obvious. Therefore, it is necessary to actively screen out agents with slow efficacy, strong transmissibility, and good effects for termite control.

[0005] The Chinese invention patent (application number 202311567628.5) discloses a trapping strip for controlling termites and a preparation method thereof, wherein the trapping strip is made by mixing an attractant and a killing agent; the attractant includes an attractant, an additive and a termite inducing pheromone; the attractant includes the following weight parts: 4-7 parts of pine sawdust powder, 5-9 parts of paulownia wood powder, 2.5-3 parts of bagasse extract, 6-8 parts of black fungus extract, 2-5 parts of fish meal and 3-6 parts of yeast extract; the killing agent includes the following weight parts: 3-4 parts of thiocarbamide, 1.7-2.5 parts of flumuron, 4-6 parts of diflubenzuron and 2 parts of ammonium chloride. Although the trapping strip prepared by the invention has a good killing effect on termites, the dosage of the invention is large. And the stability is not good. In order to reduce the amount of the agent used, adding a plant-derived synergist can achieve the purpose of reducing the amount of pesticides and increasing their efficiency and protecting the environment. Summary of the invention

[0006] In view of the above-mentioned deficiencies in the prior art, the present invention provides an attractant for killing termites and a preparation method thereof.

[0007] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0008] A trap for killing termites comprises the following raw materials in parts by weight: 60-90 parts by weight of an attractant, 7-12 parts by weight of brown sugar, 1-4 parts by weight of an insect growth regulator, 2-4 parts by weight of a metabolic inhibitor, 0.1-0.3 parts by weight of a new heterocycle, 1-3 parts by weight of a termite attractant pheromone, and 1-3 parts by weight of an insecticide synergist.

[0009] The insect growth regulator is at least one of chlorpyrifos, hexaflumuron and bistrifluan.

[0010] The metabolic inhibitor is at least one of sulfluramid and hydrazone.

[0011] The novel heterocycle is at least one of fipronil, chlorfenapyr and chlorantraniliprole.

[0012] The termite attracting pheromone is hydroquinone.

[0013] The attractant is at least one of black fungus powder, fish meal, corn cob powder and bone meal; preferably, the attractant is a mixture of black fungus powder, fish meal, corn cob powder and bone meal in a mass ratio of (3-5):(0.5-2):(2-4):(1-3).

[0014] Termite traps usually take advantage of termites' tendency to food. By providing baits containing drugs, worker ants in the termite colony eat the baits, and then spread the drugs through food within the colony, thereby killing the entire termite colony. The addition of capsaicin may enhance the attractiveness and killing effect of this bait on termites. Capsaicin is a type of alkaloid component extracted from peppers. It has contact and repellent effects. It can also be used as a repellent and antifeedant. It can significantly prolong the development period of nymphs and reduce the rate of adult emergence, thereby inhibiting their reproductive capacity. It can also inhibit the activity of enzymes related to nerve conduction in termites, causing their death. It has a contact effect on pests.

[0015] The specific killing mechanism of capsaicin on pests: In the field of biological pesticides, capsaicin is a new type of green pesticide with good contact killing and repellent activity. After the pests come into contact with capsaicin, they will show paralysis (inactivity, no feeding) and paralysis, which will eventually lead to their death. At the same time, capsaicin also has a stomach poisoning effect. After the pests feed, the detoxification enzyme system is inhibited, which in turn affects their digestion and absorption, interferes with respiratory metabolism, and causes physiological lesions due to the obstruction of normal physiological activities of the pests, and ultimately their growth and development are inhibited and they die.

[0016] The insecticide synergist is at least one of capsaicin and diethyl maleate; preferably, the insecticide synergist is a mixture of capsaicin and diethyl maleate in a mass ratio of 1:(8-15).

[0017] The inventors found that the insecticidal effect was significantly increased by compounding capsaicin and diethyl maleate during research. The possible reason is that capsaicin has significant toxicity and control effect on certain pests such as termites. It can achieve the killing effect by affecting the nervous system or digestive system of the pest. Diethyl maleate is mainly used as a bactericidal synergist in the field of pesticides. It can enhance the toxicity of the bactericide and improve the sensitivity of drug-resistant strains to the bactericide, thereby improving the disease prevention and control effect. When capsaicin is compounded with diethyl maleate, a synergistic effect can be shown.

[0018] Possible synergistic mechanism: When capsaicin and diethyl maleate act together, capsaicin may attract termites, while diethyl maleate may enhance the toxicity of the overall bait; capsaicin affects the nervous system, while diethyl maleate may enhance toxicity through other pathways (such as inhibiting energy metabolism). Diethyl maleate may help stabilize the activity of capsaicin in the environment, improve its environmental stability, and prolong its duration of action. Therefore, the combination of capsaicin and diethyl maleate may produce a synergistic effect through different mechanisms and pathways, thereby killing termites more effectively.

[0019] The preparation method of capsaicin is as follows:

[0020] S1: crushing pepper to obtain pepper powder; adding water and enzyme, performing enzymolysis, inactivating the enzyme, filtering, and retaining the enzymolysis solution;

[0021] S2. Add ethanol aqueous solution to the filter residue, reflux extraction, filter, retain the filtrate, combine the filtrate and the enzymatic hydrolyzate, and concentrate under reduced pressure to obtain a concentrated solution;

[0022] S3 adjust the pH of the concentrated solution with an aqueous sodium hydroxide solution, add activated carbon and stir thoroughly, filter to remove the activated carbon, and obtain a purified solution;

[0023] S4 uses hydrochloric acid to adjust the pH of the purified solution, crystallizes, filters, washes, and dries to obtain capsaicin.

[0024] Preferably, the preparation method of capsaicin is as follows:

[0025] S1: Crush the chili pepper and pass it through a 5-20 mesh sieve to obtain chili pepper powder; take 30-60 parts by weight of the chili pepper powder, add 150-240 parts by weight of water and 0.5-2 parts by weight of cellulase and 0.1-0.4 parts by weight of pectinase, mix well, perform enzymolysis at a pH of 5.5-6.5, 40-50° C., and 300-500 rpm for 2-6 hours, inactivate the enzyme, filter, and retain the enzymolysis solution;

[0026] S2: adding 6-12 times 60-80wt% ethanol aqueous solution to the filter residue, reflux extraction at 70-80°C for 0.5-2h, filtering, retaining the filtrate, combining the filtrate and the enzymatic hydrolyzate, and concentrating under reduced pressure to 15-25% of the original volume to obtain a concentrated solution;

[0027] S3 adjust the pH of the concentrate to 8.5-9.5 with 0.05-0.2 mol / L sodium hydroxide aqueous solution, add 5-10 parts by weight of activated carbon and stir for 3-6 hours, filter and remove the activated carbon to obtain a purified solution;

[0028] S4: adjusting the pH of the purified solution to 6.5-7.2 with 0.05-0.2 mol / L hydrochloric acid, standing at 0-6°C for crystallization for 4-10 hours, filtering, washing, and drying to obtain capsaicin.

[0029] The preparation method of the attractant for killing termites comprises the following steps: uniformly mixing the attractant and brown sugar to obtain a premix; adding an insect growth regulator, a metabolic inhibitor, a novel heterocycle, a termite attractant pheromone and an insecticide synergist into the premix, stirring for 10-30 minutes, and sealing and packaging to obtain the attractant for killing termites.

[0030] The beneficial effects of the present invention are as follows: 1. The present invention provides a termite killer and a preparation method thereof, conducts new termite killer composition, ratio, and screening tests, and screens out several new termite killers that are highly effective, pollution-free, have slow efficacy, long lasting effect, and are chemically stable, and have achieved highly effective beneficial effects.

[0031] 2. The termite attractant of the present invention can kill termites in groups efficiently, has a simple method of use, and is less restricted by regions; the present invention has abundant raw materials, low cost, and good effects in attracting and killing termites. DETAILED DESCRIPTION

[0032] The above content of the present invention is further described in detail below in conjunction with specific implementation modes, but this should not be understood as the scope of the above subject matter of the present invention being limited to the following embodiments.

[0033] The raw materials of the embodiments and comparative examples of the present invention are all commercially available. The introduction of some raw materials in this application is as follows:

[0034] Cellulase was purchased from Jiangsu Yihaotian Biotechnology Co., Ltd., with an enzyme activity of 100,000 U / g.

[0035] Pectinase was purchased from Zhejiang Yicun Biotechnology Co., Ltd., with an enzyme activity of 30,000 U / g.

[0036] Example 1

[0037] A trap for killing termites comprises the following raw materials in parts by weight: 80 parts by weight of an attractant, 10 parts by weight of brown sugar, 3 parts by weight of an insect growth regulator, 3 parts by weight of a metabolic inhibitor, 0.2 parts by weight of a new heterocycle, 2 parts by weight of a termite attractant pheromone, and 2 parts by weight of an insecticide synergist.

[0038] The insect growth regulator is triflumuron.

[0039] The metabolic inhibitor is hydrazone.

[0040] The novel heterocycle is chlorfenapyr.

[0041] The termite attracting pheromone is hydroquinone.

[0042] The attractant is a mixture of black fungus powder, fish meal, corn cob powder and bone meal; the attractant is a mixture of black fungus powder, fish meal, corn cob powder and bone meal in a mass ratio of 4:1:3:2.

[0043] The insecticide synergist is a mixture of capsaicin and diethyl maleate in a mass ratio of 1:10.

[0044] The preparation method of capsaicin is as follows:

[0045] S1: Crush the pepper and pass it through a 10-mesh sieve to obtain pepper powder; take 40 parts by weight of the pepper powder, add 200 parts by weight of water and 1 part by weight of cellulase and 0.2 parts by weight of pectinase, mix well, perform enzymolysis at pH 6, 45° C. and 400 rpm for 3 hours, inactivate the enzyme, filter and retain the enzymolysis solution;

[0046] S2: adding 10 times 70 wt% ethanol aqueous solution to the filter residue, reflux extraction at 78°C for 1 hour, filtering, retaining the filtrate, combining the filtrate and the enzymatic hydrolyzate, and concentrating under reduced pressure to 20% of the original volume to obtain a concentrated solution;

[0047] S3 adjust the pH of the concentrate to 9 with 0.1 mol / L sodium hydroxide aqueous solution, add 8 parts by weight of activated carbon and stir for 4 hours, filter and remove the activated carbon to obtain a purified solution;

[0048] S4: adjust the pH of the purified solution to 7 with 0.1 mol / L hydrochloric acid, let it stand at 4°C for 6 hours to crystallize, filter, wash, and dry to obtain capsaicin.

[0049] The method for preparing the attractant for killing termites comprises the following method:

[0050] The black fungus powder, fish meal, corn cob powder, bone meal and brown sugar are uniformly mixed to obtain a premix; an insect growth regulator, a metabolic inhibitor, a novel heterocycle, a termite attractant pheromone and an insecticide synergist are added to the premix, stirred for 20 minutes, and sealed and packaged to obtain an attractant for killing termites.

[0051] Example 2

[0052] A trap for killing termites comprises the following raw materials in parts by weight: 60 parts by weight of an attractant, 12 parts by weight of brown sugar, 1 part by weight of an insect growth regulator, 4 parts by weight of a metabolic inhibitor, 0.1 parts by weight of a new heterocycle, 3 parts by weight of termite attractant pheromones, and 1 part by weight of an insecticide synergist.

[0053] The insect growth regulator is triflumuron.

[0054] The metabolic inhibitor is hydrazone.

[0055] The novel heterocycle is chlorfenapyr.

[0056] The termite attracting pheromone is hydroquinone.

[0057] The attractant is a mixture of black fungus powder, fish meal, corn cob powder and bone meal; the attractant is a mixture of black fungus powder, fish meal, corn cob powder and bone meal in a mass ratio of 3:2:2:3.

[0058] The insecticide synergist is a mixture of capsaicin and diethyl maleate in a mass ratio of 1:8.

[0059] The preparation method of capsaicin is as follows:

[0060] S1: Crush the chili pepper and pass it through a 20-mesh sieve to obtain chili pepper powder; take 30 parts by weight of the chili pepper powder, add 240 parts by weight of water and 0.5 parts by weight of cellulase and 0.4 parts by weight of pectinase, mix well, perform enzymolysis at pH 5.5, 50°C, and 300 rpm for 2 hours, inactivate the enzyme, filter, and retain the enzymolysis solution;

[0061] S2: adding 6 times 80 wt% ethanol aqueous solution to the filter residue, reflux extraction at 70°C for 0.5 h, filtering, retaining the filtrate, combining the filtrate and the enzymatic hydrolyzate, and concentrating under reduced pressure to 25% of the original volume to obtain a concentrated solution;

[0062] S3 adjust the pH of the concentrate to 9.5 with 0.05 mol / L sodium hydroxide aqueous solution, add 5 parts by weight of activated carbon and stir for 3 hours, filter and remove the activated carbon to obtain a purified solution;

[0063] S4: adjust the pH of the purified solution to 6.5 with 0.2 mol / L hydrochloric acid, let it stand at 0°C for 10 hours to crystallize, filter, wash, and dry to obtain capsaicin.

[0064] The method for preparing the attractant for killing termites comprises the following method:

[0065] The black fungus powder, fish meal, corn cob powder, bone meal and brown sugar are uniformly mixed to obtain a premix; an insect growth regulator, a metabolic inhibitor, a novel heterocycle, a termite attractant pheromone and an insecticide synergist are added to the premix, stirred for 10 minutes, and sealed and packaged to obtain an attractant for killing termites.

[0066] Example 3

[0067] A trap for killing termites comprises the following raw materials in parts by weight: 90 parts by weight of an attractant, 7 parts by weight of brown sugar, 4 parts by weight of an insect growth regulator, 2 parts by weight of a metabolic inhibitor, 0.3 parts by weight of a new heterocycle, 1 part by weight of a termite attractant pheromone, and 3 parts by weight of an insecticide synergist.

[0068] The insect growth regulator is triflumuron.

[0069] The metabolic inhibitor is hydrazone.

[0070] The novel heterocycle is chlorfenapyr.

[0071] The termite attracting pheromone is hydroquinone.

[0072] The attractant is a mixture of black fungus powder, fish meal, corn cob powder and bone meal; the attractant is a mixture of black fungus powder, fish meal, corn cob powder and bone meal in a mass ratio of 5:0.5:4:1.

[0073] The insecticide synergist is a mixture of capsaicin and diethyl maleate in a mass ratio of 1:15.

[0074] The preparation method of capsaicin is as follows:

[0075] S1: Crush the pepper and pass it through a 5-mesh sieve to obtain pepper powder; take 60 parts by weight of pepper powder, add 150 parts by weight of water and 2 parts by weight of cellulase and 0.1 parts by weight of pectinase, mix well, perform enzymolysis at pH 6.5, 40°C, and 500 rpm for 6 hours, inactivate the enzyme, filter, and retain the enzymolysis solution;

[0076] S2: adding 12 times 60 wt% ethanol aqueous solution to the filter residue, reflux extraction at 80°C for 2h, filtering, retaining the filtrate, combining the filtrate and the enzymatic hydrolyzate, and concentrating under reduced pressure to 15% of the original volume to obtain a concentrated solution;

[0077] S3 adjust the pH of the concentrate to 8.5 with 0.2 mol / L sodium hydroxide aqueous solution, add 10 parts by weight of activated carbon and stir for 6 hours, filter and remove the activated carbon to obtain a purified solution;

[0078] S4: adjust the pH of the purified solution to 7.2 with 0.05 mol / L hydrochloric acid, let it stand at 6°C for 4 hours to crystallize, filter, wash, and dry to obtain capsaicin.

[0079] The method for preparing the attractant for killing termites comprises the following method:

[0080] Black fungus powder, fish meal, corn cob powder, bone meal and brown sugar are uniformly mixed to obtain a premix; insect growth regulators, metabolic inhibitors, novel heterocycles, termite attractant pheromones and insecticide synergists are added to the premix, stirred for 30 minutes, and sealed and packaged to obtain an attractant for killing termites.

[0081] Comparative Example 1

[0082] A trap for killing termites comprises the following raw materials in parts by weight: 80 parts by weight of an attractant, 10 parts by weight of brown sugar, 3 parts by weight of an insect growth regulator, 3 parts by weight of a metabolic inhibitor, 0.2 parts by weight of a new heterocycle, 2 parts by weight of a termite attractant pheromone, and 2 parts by weight of an insecticide synergist.

[0083] The insect growth regulator is triflumuron.

[0084] The metabolic inhibitor is hydrazone.

[0085] The novel heterocycle is chlorfenapyr.

[0086] The termite attracting pheromone is hydroquinone.

[0087] The attractant is a mixture of black fungus powder, fish meal, corn cob powder and bone meal; the attractant is a mixture of black fungus powder, fish meal, corn cob powder and bone meal in a mass ratio of 4:1:3:2.

[0088] The insecticide synergist is capsaicin.

[0089] The preparation method of capsaicin is as follows:

[0090] S1: Crush the pepper and pass it through a 10-mesh sieve to obtain pepper powder; take 40 parts by weight of the pepper powder, add 200 parts by weight of water and 1 part by weight of cellulase and 0.2 parts by weight of pectinase, mix well, perform enzymolysis at pH 6, 45° C. and 400 rpm for 3 hours, inactivate the enzyme, filter and retain the enzymolysis solution;

[0091] S2: adding 10 times 70 wt% ethanol aqueous solution to the filter residue, reflux extraction at 78°C for 1 hour, filtering, retaining the filtrate, combining the filtrate and the enzymatic hydrolyzate, and concentrating under reduced pressure to 20% of the original volume to obtain a concentrated solution;

[0092] S3 adjust the pH of the concentrate to 9 with 0.1 mol / L sodium hydroxide aqueous solution, add 8 parts by weight of activated carbon and stir for 4 hours, filter and remove the activated carbon to obtain a purified solution;

[0093] S4: adjust the pH of the purified solution to 7 with 0.1 mol / L hydrochloric acid, let it stand at 4°C for 6 hours to crystallize, filter, wash, and dry to obtain capsaicin.

[0094] The method for preparing the attractant for killing termites comprises the following method:

[0095] The black fungus powder, fish meal, corn cob powder, bone meal and brown sugar are uniformly mixed to obtain a premix; an insect growth regulator, a metabolic inhibitor, a novel heterocycle, a termite attractant pheromone and an insecticide synergist are added to the premix, stirred for 20 minutes, and sealed and packaged to obtain an attractant for killing termites.

[0096] Comparative Example 2

[0097] A trap for killing termites comprises the following raw materials in parts by weight: 80 parts by weight of an attractant, 10 parts by weight of brown sugar, 3 parts by weight of an insect growth regulator, 3 parts by weight of a metabolic inhibitor, 0.2 parts by weight of a new heterocycle, 2 parts by weight of a termite attractant pheromone, and 2 parts by weight of an insecticide synergist.

[0098] The insect growth regulator is triflumuron.

[0099] The metabolic inhibitor is hydrazone.

[0100] The novel heterocycle is chlorfenapyr.

[0101] The termite attracting pheromone is hydroquinone.

[0102] The attractant is a mixture of black fungus powder, fish meal, corn cob powder and bone meal; the attractant is a mixture of black fungus powder, fish meal, corn cob powder and bone meal in a mass ratio of 4:1:3:2.

[0103] The insecticide synergist is diethyl maleate.

[0104] The method for preparing the attractant for killing termites comprises the following method:

[0105] The black fungus powder, fish meal, corn cob powder, bone meal and brown sugar are uniformly mixed to obtain a premix; an insect growth regulator, a metabolic inhibitor, a novel heterocycle, a termite attractant pheromone and an insecticide synergist are added to the premix, stirred for 20 minutes, and sealed and packaged to obtain an attractant for killing termites.

[0106] Comparative Example 3

[0107] A trap for killing termites comprises the following raw materials in parts by weight: 80 parts by weight of attractant, 10 parts by weight of brown sugar, 3 parts by weight of insect growth regulator, 3 parts by weight of metabolic inhibitor, 0.2 parts by weight of new heterocycle and 2 parts by weight of termite attractant pheromone.

[0108] The insect growth regulator is triflumuron.

[0109] The metabolic inhibitor is hydrazone.

[0110] The novel heterocycle is chlorfenapyr.

[0111] The termite attracting pheromone is hydroquinone.

[0112] The attractant is a mixture of black fungus powder, fish meal, corn cob powder and bone meal; the attractant is a mixture of black fungus powder, fish meal, corn cob powder and bone meal in a mass ratio of 4:1:3:2.

[0113] The method for preparing the attractant for killing termites comprises the following method:

[0114] The black fungus powder, fish meal, corn cob powder, bone meal and brown sugar are uniformly mixed to obtain a premix; an insect growth regulator, a metabolic inhibitor, a new heterocycle and a termite attractant pheromone are added to the premix, stirred for 20 minutes, and sealed and packaged to obtain an attractant for killing termites.

[0115] Comparative Example 4

[0116] It is basically the same as Example 1, the only difference being that the insecticide synergist is a mixture of capsaicin and diethyl maleate in a mass ratio of 1:5.

[0117] Comparative Example 5

[0118] It is basically the same as Example 1, the only difference being that the insecticide synergist is a mixture of capsaicin and diethyl maleate in a mass ratio of 1:15.

[0119] Test Example 1

[0120] Termite killing rate test: prepare several test boxes, and pile 1kg of fine sand at the bottom of each container, the moisture content of the fine sand is 12%, then place 40 termites in each test box, and then place 300g of pine wood blocks in the container, protect from light, and feed the termites normally for 3 days. After the 3-day feeding, prepare samples of the termite attractants of Examples 1-3 and Comparative Examples 1-5, the weight of the samples is 4g, and then moisten them with water to make their moisture content 65%, and place them in the test boxes respectively, and count the number of termites killed in 12h, 18h, and 24h. The test results are shown in Table 1.

[0121] Table 1 Termite killing rate test

[0122] Number of termite deaths (12h) Number of termite deaths (18h) Number of dead termites (24h) Example 1 20 34 40 Example 2 19 31 40 Example 3 19 32 40 Comparative Example 1 10 22 34 Comparative Example 2 7 20 33 Comparative Example 3 1 10 20 Comparative Example 4 12 27 38 Comparative Example 5 10 25 37

[0123] Test Example 2

[0124] Stability test: The termite killing attractants prepared in the above embodiments and comparative examples were placed at 54°C for a heat stability storage stability test. The heat stability storage test was carried out according to the standards 4.1-4.4 in GB / T19136-2021 and was heat stored for 14 days. The experimental results are shown in Table 2.

[0125] Table 2 Stability test of termite killing agent

[0126] Thermal storage decomposition rate (%) Example 1 0.67 Comparative Example 1 0.62 Comparative Example 2 1.27 Comparative Example 4 0.73 Comparative Example 5 0.71

[0127] The bait prepared by the present invention for killing termites has a good effect of killing termites, and the stability of the bait is relatively good, and the storage performance in summer can be improved. The inventor found that the insecticidal effect was significantly increased by compounding capsaicin and diethyl maleate during research. The possible reason is that capsaicin has significant toxicity and control effect on certain pests such as termites. It can achieve the killing effect by affecting the nervous system or digestive system of the pest. Diethyl maleate is mainly used as a bactericidal synergist in the field of pesticides. It can enhance the toxicity of the bactericide and improve the sensitivity of drug-resistant strains to the bactericide, thereby improving the disease prevention and control effect. When capsaicin is compounded with diethyl maleate, a synergistic effect can be shown.

[0128] Possible synergistic mechanism: When capsaicin and diethyl maleate act together, capsaicin may attract termites, while diethyl maleate may enhance the toxicity of the overall bait; capsaicin affects the nervous system, while diethyl maleate may enhance toxicity through other pathways (such as inhibiting energy metabolism). Diethyl maleate may help stabilize the activity of capsaicin in the environment, improve its environmental stability, and prolong its duration of action. Therefore, the combination of capsaicin and diethyl maleate may produce a synergistic effect through different mechanisms and pathways of action, thereby killing termites more effectively. At the same time, the simultaneous use of the two can effectively increase the storage time of the bait, extend the use time, and save costs.

Claims

1. A trap for killing termites, It is characterized in that The invention comprises the following raw materials in parts by weight: 60-90 parts by weight of attractant, 7-12 parts by weight of brown sugar, 1-4 parts by weight of insect growth regulator, 2-4 parts by weight of metabolic inhibitor, 0.1-0.3 parts by weight of novel heterocycle and 1-3 parts by weight of termite attractant pheromone.

2. The attractant for killing termites as claimed in claim 1, It is characterized in that It also includes 1-3 parts by weight of insecticide synergist.

3. The attractant for killing termites as claimed in claim 1, It is characterized in that The insect growth regulator is at least one of chlorpyrifos, hexaflumuron and bistrifluan.

4. The attractant for killing termites as claimed in claim 1, It is characterized in that The metabolic inhibitor is at least one of sulfluramid and hydrazone.

5. The attractant for killing termites as claimed in claim 1, It is characterized in that The novel heterocycle is at least one of fipronil, chlorfenapyr and chlorantraniliprole.

6. The attractant for killing termites as claimed in claim 1, It is characterized in that The termite attracting pheromone is hydroquinone.

7. The attractant for killing termites as claimed in claim 1, It is characterized in that The attractant is at least one of black fungus powder, fish meal, corn cob powder and bone meal.

8. The attractant for killing termites as claimed in claim 2, It is characterized in that The insecticide synergist is at least one of capsaicin and diethyl maleate.

9. The attractant for killing termites as claimed in claim 8, It is characterized in that The preparation method of capsaicin is as follows: S1: crushing pepper to obtain pepper powder; adding water and enzyme, performing enzymolysis, inactivating the enzyme, filtering, and retaining the enzymolysis solution; S2. Add ethanol aqueous solution to the filter residue, reflux extraction, filter, retain the filtrate, combine the filtrate and the enzymatic hydrolyzate, and concentrate under reduced pressure to obtain a concentrated solution; S3 adjust the pH of the concentrated solution with an aqueous sodium hydroxide solution, add activated carbon and stir thoroughly, filter to remove the activated carbon, and obtain a purified solution; S4 uses hydrochloric acid to adjust the pH of the purified solution, crystallizes, filters, washes, and dries to obtain capsaicin.

10. A method for preparing a termite-killing attractant according to any one of claims 1 to 9, It is characterized in that The method comprises the following steps: uniformly mixing an attractant and brown sugar to obtain a premix; adding an insect growth regulator, a metabolic inhibitor, a novel heterocycle, a termite attractant pheromone and an insecticide synergist into the premix, stirring, and sealing and packaging to obtain an attractant for killing termites.