Chilo suppressalis adult feeding double attractant and application

Abstract

The invention belongs to the technical field of biological control, and discloses a chilo suppressalis adult feeding double attractant and application. The adult chilo suppressalis feeding double attractant comprises the following components in percentage by mass: 60-98% of a slow-release carrier and 2-40% of an active substance, the active substances comprise 96.3 to 99.93 percent of chilo suppressalis riboflavin and 0.07 to 6.7 percent of chilo suppressalis sex pheromone. The sex pheromone is selected from substances except for chilo suppressalis and capable of stimulating chilo suppressalis adults to eat and lay eggs, and the sex pheromone of the chilo suppressalis is selected from chemical substances of female moths and capable of attracting male moths to mate. According to the invention, the formula of the chilo suppressalis food attractant is innovatively improved, and the food attractant component and the sex attractant component which attract chilo suppressalis are combined according to a certain proportion to form a new food double-attractant component, so that the attraction capability of the attractant to chilo suppressalis can be remarkably improved.

Description

Technical Field

[0001] The invention belongs to the technical field of biological control and relates to a striped stem borer attractant, in particular to a striped stem borer adult feeding double attractant and application thereof. Background Art

[0002] Chilo suppressalis (Walker), belonging to the class Insecta, the order Lepidoptera, the family Pyralidae, is widely distributed in temperate, subtropical and tropical regions and is a worldwide rice pest. The distribution of Chilo suppressalis in China is almost everywhere in rice-growing areas. The main damage caused by Chilo suppressalis to rice is dead sheaths, dead and pregnant panicles, white panicles and insect-damaged plants, which greatly reduces rice yields. The control of Chilo suppressalis is usually carried out with chemical agents, but in the long run, Chilo suppressalis will inevitably develop different degrees of resistance to a variety of agents. Chilo suppressalis in many rice-growing areas has developed serious resistance to conventional insecticides, and with the rise in global temperatures, changes in field farming systems and the emergence of resistance to pesticides, the control of Chilo suppressalis is facing a crisis. The continuous increase in the base number of insects and the continuous increase in control costs each year have caused serious losses to farmers' income and rice production. Therefore, it is necessary to actively seek a variety of control methods and comprehensively control the large-scale occurrence of Chilo suppressalis.

[0003] Attractants have played an irreplaceable role in the field of agricultural plant protection and have effectively controlled the insect population base. However, there are currently few types of Chilo suppressalis attractants on the market, and the trapping effects are uneven. Currently, the main Chilo suppressalis attractants used are broad-spectrum attractants, and there are almost no special attractants. Moreover, the effect of Chilo suppressalis attractants is poor, and their attraction to Chilo suppressalis is poor. Although Chilo suppressalis sex attractants have certain effects, such attractants can only attract male Chilo suppressalis, cannot effectively control the number of female moths, and the duration of effectiveness is short. Summary of the invention

[0004] The purpose of the present invention is to solve the above technical defects of the existing striped stem borer food attractants, and to provide a striped stem borer adult food double attractant and its application which can significantly improve the striped stem borer attracting ability.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The first aspect of the present invention is to provide a double attractant for the feeding habits of adult striped stem borers, which comprises, by mass percentage, 60-98% of a slow-release carrier and 2-40% of an active substance, wherein the active substance comprises 96.3-99.93% of striped stem borer kairomones and 0.07-6.7% of striped stem borer sex pheromones.

[0007] Preferably, the kairomone is selected from substances other than the Chilo suppressalis that can stimulate the adult Chilo suppressalis to feed and lay eggs, and the Chilo suppressalis sex pheromone is selected from chemical substances of the female moth itself that can lure male moths to mate.

[0008] Preferably, in terms of mass percentage, the sustained-release carrier accounts for 80-90%, and the active substance accounts for 10-20%.

[0009] More preferably, in terms of mass percentage, the sustained-release carrier accounts for 82-88%, and the active substance accounts for 12-16%.

[0010] More preferably, by mass percentage, the sustained-release carrier accounts for 85% and the active substance accounts for 15%.

[0011] Preferably, the sustained-release carrier is solid, liquid or solid-liquid mixture, and its main function is to adsorb active substances and slowly release them, and it has good solubility and adsorption.

[0012] Preferably, the solid part in the sustained-release carrier is selected from one or more of rubber particles, silica gel particles, foamed silica gel particles, activated carbon particles, and silicon dioxide powder.

[0013] Preferably, the liquid part of the sustained-release carrier is selected from one or more of paraffin oil, phenoxyethanol, N-methylpyrrolidone, N,N-dimethylacetamide, dichloromethane, n-hexane, ethyl acetate, and vegetable oil.

[0014] More preferably, the sustained-release carrier is composed of 10-40% paraffin oil and 60-90% rubber particles in terms of mass percentage.

[0015] More preferably, the sustained-release carrier is composed of 10-20% paraffin oil and 80-90% rubber particles in terms of mass percentage.

[0016] More preferably, the sustained-release carrier is composed of 10% paraffin oil and 90% rubber particles by mass percentage.

[0017] Preferably, the Chilo suppressalis kairomone is selected from one or a combination of the following: methyl salicylate, linalool, nerolidol, linoleic acid, 2-heptanol, 4′-methylacetophenone, benzaldehyde, methyl jasmonate, β-caryophyllene, caryophyllene, trans-2-hexenal, cedrol, farnesol, 2-pentadecanone, farnesene, β-ionone, lauryl aldehyde, and vetiver essential oil.

[0018] Preferably, the components of the Chilo suppressalis kairomone are: benzaldehyde, methyl salicylate, methyl jasmonate, caryophyllene, trans-2-hexenal, linalool, jasmine essence, and vetiver essential oil.

[0019] Preferably, the Chilo suppressalis sex pheromone is selected from one or a combination of Z-11-hexadecenal, Z-13-octadecenal, and Z-9-hexadecenal.

[0020] Preferably, the ratio of the components in the Chilo suppressalis sex pheromone is Z-11-hexadecenal, Z-13-octadecenal, and Z-9-hexadecenal=(40-50):(3-10):(2-8).

[0021] More preferably, the ratio of the components in the Chilo suppressalis sex pheromone is Z-11-hexadecenal, Z-13-octadecenal, and Z-9-hexadecenal=48:6:5.

[0022] Preferably, the proportions of the components in the active substance are: benzaldehyde 0.4-6.7%, methyl salicylate 0.07-6.7%, methyl jasmonate 3.3-67%, caryophyllene 0.33-6.7%, trans-2-hexenal 0.7-53%, linalool 0.7-50%, jasmine essence 0.7-70%, vetiver essential oil 6.7-50%, and Chilo suppressalis sex pheromone 0.07-6.7%.

[0023] Preferably, the proportions of the components in the active substance are: benzaldehyde 0.9-3.5%, methyl salicylate 0.6-2.5%, methyl jasmonate 5-20%, caryophyllene 0.8-2.8%, trans-2-hexenal 6-30%, linalool 6-30%, jasmine essence 12-50%, vetiver essential oil 5-35%, and Chilo suppressalis sex pheromone 0.2-3.5%.

[0024] More preferably, the proportions of the components in the active substance are: benzaldehyde 1.5%, methyl salicylate 1.3%, methyl jasmonate 6.7%, caryophyllene 1.3%, trans-2-hexenal 13.3%, linalool 20%, jasmine essence 30%, vetiver essential oil 25%, and Chilo suppressalis sex pheromone 0.90%.

[0025] The second aspect of the present invention is to provide a method for preparing the double attractant for feeding on adult Chilo suppressalis as described above, wherein the slow-release carrier and the active substance components are mixed and combined in any order.

[0026] Preferably, the preparation method is: weigh 10.5 g of paraffin oil, add vetiver essential oil, linalool, benzaldehyde, trans-2-hexenal, Chilo suppressalis sex pheromone, caryophyllene, methyl salicylate, methyl jasmonate and jasmine essence in the formula ratio into the paraffin oil in sequence, stir evenly and set aside.

[0027] The third aspect of the present invention is to provide a use of the double attractant for the feeding habits of adult striped stem borers as described above, wherein the double attractant for the feeding habits of adult striped stem borers is packed into a bagged or boxed container and placed in a trap for use.

[0028] Preferably, the double attractant for the feeding habits of the striped stem borer is put into a tea bag and placed in a bucket trap for use;

[0029] Preferably, the total weight of the double attractant product for feeding on Chilo suppressalis can be 10g to 25g;

[0030] Preferably, the total weight of the double attractant product for feeding on Chilo suppressalis is 18 g.

[0031] The present invention adopts the above technical solution, which has the following technical effects compared with the prior art:

[0032] The striped stem borer feeding dual attractant of the present invention is mainly used for attracting adult striped stem borers, can be used in conjunction with a trap, and comprises two parts, namely a slow-release carrier and an active substance. The active substance adopts striped stem borer kairomones and striped stem borer sex pheromones. The kairomones adopt substances other than striped stem borers that can stimulate striped stem borer adults to feed and lay eggs, and the sex pheromones adopt chemical substances that come from female moths themselves and can attract male moths for mating. The formula of the striped stem borer feeding attractant is innovatively improved, and a feeding attractant component that has an attractive effect on striped stem borers is combined with a sex attractant component in a certain proportion to form a new feeding dual attractant component, thereby significantly improving the attractant's ability to attract striped stem borers. DETAILED DESCRIPTION

[0033] The present invention is described in detail and specifically by specific examples below to provide a better understanding of the present invention, but the following examples do not limit the scope of the present invention.

[0034] Example 1

[0035] A double attractant for feeding on striped stem borer, comprising the following components in parts by weight: 90 parts of a slow-release carrier and 10 parts of an active substance. The slow-release carrier is composed of 10% paraffin oil and 90% rubber particles; the proportions of the components in the active substance are: 1.3% benzaldehyde, 3.0% methyl salicylate, 5.0% methyl jasmonate, 0.7% caryophyllene, 10.0% trans-2-hexenal, 15.0% linalool, 20.0% jasmine essence, 40.0% vetiver essential oil, and 5.0% sex pheromone of striped stem borer.

[0036] The preparation method is as follows: according to the above formula ratio, the components of the sustained-release carrier and the active substance are weighed, and the vetiver essential oil, linalool, benzaldehyde, trans-2-hexenal, striped stem borer sex pheromone, caryophyllene, methyl salicylate, methyl jasmonate and jasmine essence in the formula ratio are added to the mixture of paraffin oil and rubber particles in sequence, and the mixture is stirred evenly for later use.

[0037] Example 2

[0038] A double attractant for feeding on striped stem borer, comprising the following components in parts by weight: 92 parts of a slow-release carrier and 8 parts of an active substance. The slow-release carrier is composed of 10% paraffin oil and 90% rubber particles; the proportions of the components in the active substance are: 1.5% benzaldehyde, 2.0% methyl salicylate, 5.5% methyl jasmonate, 1.0% caryophyllene, 11.0% trans-2-hexenal, 15.0% linalool, 25.0% jasmine essence, 35.0% vetiver essential oil, and 4.0% sex pheromone of striped stem borer.

[0039] The preparation method is as follows: according to the above formula ratio, the components of the sustained-release carrier and the active substance are weighed, and the vetiver essential oil, linalool, benzaldehyde, trans-2-hexenal, striped stem borer sex pheromone, caryophyllene, methyl salicylate, methyl jasmonate and jasmine essence in the formula ratio are added to the mixture of paraffin oil and rubber particles in sequence, and the mixture is stirred evenly for later use.

[0040] Example 3

[0041] A double attractant for feeding on striped stem borer, comprising the following components in parts by weight: 93 parts of a slow-release carrier and 7 parts of an active substance. The slow-release carrier is composed of 10% paraffin oil and 90% rubber particles; the proportions of the components in the active substance are: 1.2% benzaldehyde, 1.8% methyl salicylate, 6.0% methyl jasmonate, 1.0% caryophyllene, 12.0% trans-2-hexenal, 18.0% linalool, 25.0% jasmine essence, 32.0% vetiver essential oil, and 3.0% sex pheromone of striped stem borer.

[0042] The preparation method is as follows: according to the above formula ratio, the components of the sustained-release carrier and the active substance are weighed, and the vetiver essential oil, linalool, benzaldehyde, trans-2-hexenal, striped stem borer sex pheromone, caryophyllene, methyl salicylate, methyl jasmonate and jasmine essence in the formula ratio are added to the mixture of paraffin oil and rubber particles in sequence, and the mixture is stirred evenly for later use.

[0043] Example 4

[0044] A double attractant for feeding on striped stem borer, comprising the following components in parts by weight: 94 parts of a slow-release carrier and 6 parts of an active substance. The slow-release carrier is composed of 10% paraffin oil and 90% rubber particles; the proportions of the components in the active substance are: 1.4% benzaldehyde, 1.6% methyl salicylate, 6.0% methyl jasmonate, 1.0% caryophyllene, 12.0% trans-2-hexenal, 18.0% linalool, 28.0% jasmine essence, 30.0% vetiver essential oil, and 2.0% sex pheromone of striped stem borer.

[0045] The preparation method is as follows: according to the above formula ratio, the components of the sustained-release carrier and the active substance are weighed, and the vetiver essential oil, linalool, benzaldehyde, trans-2-hexenal, striped stem borer sex pheromone, caryophyllene, methyl salicylate, methyl jasmonate and jasmine essence in the formula ratio are added to the mixture of paraffin oil and rubber particles in sequence, and the mixture is stirred evenly for later use.

[0046] Example 5

[0047] A double attractant for feeding on striped stem borer, comprising the following components in parts by weight: 95 parts of a slow-release carrier and 5 parts of an active substance. The slow-release carrier is composed of 10% paraffin oil and 90% rubber particles; the proportions of the components in the active substance are: 1.5% benzaldehyde, 1.5% methyl salicylate, 6.5% methyl jasmonate, 1.2% caryophyllene, 13.3% trans-2-hexenal, 19.0% linalool, 28.0% jasmine essence, 28.0% vetiver essential oil, and 1.0% sex pheromone of striped stem borer.

[0048] The preparation method is as follows: according to the above formula ratio, the components of the sustained-release carrier and the active substance are weighed, and the vetiver essential oil, linalool, benzaldehyde, trans-2-hexenal, striped stem borer sex pheromone, caryophyllene, methyl salicylate, methyl jasmonate and jasmine essence in the formula ratio are added to the mixture of paraffin oil and rubber particles in sequence, and the mixture is stirred evenly for later use.

[0049] Example 6

[0050] A double attractant for feeding on striped stem borer, comprising the following components in parts by weight: 96 parts of a slow-release carrier and 4 parts of an active substance. The slow-release carrier is composed of 10% paraffin oil and 90% rubber particles; the proportions of the components in the active substance are: 1.5% benzaldehyde, 1.3% methyl salicylate, 6.7% methyl jasmonate, 1.3% caryophyllene, 13.3% trans-2-hexenal, 20% linalool, 30% jasmine essence, 25% vetiver essential oil, and 0.90% sex pheromone of striped stem borer.

[0051] The preparation method is as follows: according to the above formula ratio, the components of the sustained-release carrier and the active substance are weighed, and the vetiver essential oil, linalool, benzaldehyde, trans-2-hexenal, striped stem borer sex pheromone, caryophyllene, methyl salicylate, methyl jasmonate and jasmine essence in the formula ratio are added to the mixture of paraffin oil and rubber particles in sequence, and the mixture is stirred evenly for later use.

[0052] Comparative Example 1

[0053] A striped stem borer attractant is composed of the following components in parts by weight: 90 parts of a slow-release carrier and 10 parts of an active substance. The slow-release carrier is composed of 10% paraffin oil and 90% rubber particles; the proportions of the components in the active substance are: 0.4% benzaldehyde, 6.7% methyl salicylate, 3.0% methyl jasmonate, 7.0% caryophyllene, 0.6% trans-2-hexenal, 70.0% linalool, 0.6% jasmine essence, 5.0% vetiver essential oil, and 6.7% striped stem borer sex pheromone.

[0054] The preparation method is as follows: according to the above formula ratio, the components of the sustained-release carrier and the active substance are weighed, and the vetiver essential oil, linalool, benzaldehyde, trans-2-hexenal, striped stem borer sex pheromone, caryophyllene, methyl salicylate, methyl jasmonate and jasmine essence in the formula ratio are added to the mixture of paraffin oil and rubber particles in sequence, and the mixture is stirred evenly for later use.

[0055] Comparative Example 2

[0056] A striped stem borer attractant is composed of the following components in parts by weight: 95 parts of a slow-release carrier and 5 parts of an active substance. The slow-release carrier is composed of 10% paraffin oil and 90% rubber particles; the proportions of the components in the active substance are: 0.4% benzaldehyde, 7.0% methyl salicylate, 3.0% methyl jasmonate, 10.0% caryophyllene, 0.7% trans-2-hexenal, 65.0% linalool, 0.7% jasmine essence, 6.2% vetiver essential oil, and 7.0% striped stem borer sex pheromone.

[0057] The preparation method is as follows: according to the above formula ratio, a sustained-release carrier is weighed, and vetiver essential oil, linalool, benzaldehyde, trans-2-hexenal, striped stem borer sex pheromone, caryophyllene, methyl salicylate, methyl jasmonate and jasmine essence in the formula ratio are added to the mixture of paraffin oil and rubber particles in sequence, and the mixture is stirred evenly for later use.

[0058] Comparative Example 3

[0059] A striped stem borer attractant, comprising the following components in parts by weight: 96 parts of a slow-release carrier and 4 parts of an active substance. The slow-release carrier is composed of 10% paraffin oil and 90% rubber particles; the proportions of the components in the active substance are: 7.0% benzaldehyde, 7.0% methyl salicylate, 70.0% methyl jasmonate, 1.0% caryophyllene, 0.6% trans-2-hexenal, 0.7% linalool, 0.7% jasmine essence, 8.0% vetiver essential oil, and 5.0% striped stem borer sex pheromone.

[0060] The preparation method is as follows: according to the above formula ratio, the components of the sustained-release carrier and the active substance are weighed, and the vetiver essential oil, linalool, benzaldehyde, trans-2-hexenal, striped stem borer sex pheromone, caryophyllene, methyl salicylate, methyl jasmonate and jasmine essence in the formula ratio are added to the mixture of paraffin oil and rubber particles in sequence, and the mixture is stirred evenly for later use.

[0061] Comparative Example 4

[0062] A striped stem borer attractant, comprising the following components in parts by weight: 95 parts of a slow-release carrier and 5 parts of an active substance. The slow-release carrier is composed of 10% paraffin oil and 90% rubber particles; the proportions of the components in the active substance are: 7.0% benzaldehyde, 7.0% methyl salicylate, 3.0% methyl jasmonate, 7.0% caryophyllene, 0.7% trans-2-hexenal, 10.0% linalool, 0.3% jasmine essence, 60.0% vetiver essential oil, and 5.0% striped stem borer sex pheromone.

[0063] The preparation method is as follows: according to the above formula ratio, the components of the sustained-release carrier and the active substance are weighed, and the vetiver essential oil, linalool, benzaldehyde, trans-2-hexenal, striped stem borer sex pheromone, caryophyllene, methyl salicylate, methyl jasmonate and jasmine essence in the formula ratio are added to the mixture of paraffin oil and rubber particles in sequence, and the mixture is stirred evenly for later use.

[0064] Verification test: In order to further illustrate the feasibility of the Chilo suppressalis attractant provided by the present invention, it is described below in conjunction with specific tests.

[0065] Test time: April 24-May 24, 2024

[0066] Test site: Laboratory of Hubei Baimi Biological Industry Co., Ltd.

[0067] Experimental method: Using a multi-channel wind tunnel test device, 50 pairs of newly emerged adult Chilo suppressalis were placed in the pupation box of the device, and then attractants of different components were placed on the loading platform of the wind tunnel test device. The device was turned on and each group of experiments was repeated 3 times. The capture rate of Chilo suppressalis by each group of attractants was counted.

[0068] Table 1 The attracting effect of different formulas of double attractants on Chilo suppressalis

[0069]

[0070]

[0071] According to the test results in Table 1 above, after multiple experiments, it was found that the formula of Example 6 had the best attracting effect on the striped stem borer, and the attracting effect on male and female moths was close to 2:1. Compared with the formulas of Example 1, Example 2 and each comparative example, the attracting ability of the striped stem borer was significantly improved, and the number of female moths could be effectively controlled, and the duration of effect was longer.

[0072] The specific embodiments of the present invention are described in detail above, but they are only examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions made to the present invention are also within the scope of the present invention. Therefore, the equalization changes and modifications made without departing from the spirit and scope of the present invention should be included in the scope of the present invention.

Claims

1. A double attractant for the feeding habits of adult Chilo suppressalis, characterized in that: Calculated by mass percentage, the invention comprises 60-98% of a slow-release carrier and 2-40% of an active substance; the active substance comprises 96.3-99.93% of a striped stem borer kairomone and 0.07-6.7% of a striped stem borer sex pheromone.

2. The double attractant for the feeding habits of adult Chilo suppressalis according to claim 1, characterized in that: In terms of mass percentage, the sustained-release carrier accounts for 80-90%, and the active substance accounts for 10-20%.

3. The double attractant for the feeding habits of adult Chilo suppressalis according to claim 1, characterized in that: The sustained-release carrier is solid, liquid or a solid-liquid mixture, wherein: The solid part of the sustained-release carrier is selected from one or more of rubber particles, silica particles, foamed silica particles, activated carbon particles, and silicon dioxide powder; The liquid part of the sustained-release carrier is selected from one or more of paraffin oil, phenoxyethanol, N-methylpyrrolidone, N,N-dimethylacetamide, dichloromethane, n-hexane, ethyl acetate, and vegetable oil.

4. The double attractant for the feeding habits of adult Chilo suppressalis according to claim 3, characterized in that: Calculated by mass percentage, the sustained-release carrier consists of 10-40% paraffin oil and 60-90% rubber particles.

5. The double attractant for the feeding habits of adult Chilo suppressalis according to claim 1, characterized in that: The striped stem borer kairomone is selected from one or a combination of methyl salicylate, linalool, nerolidol, linoleic acid, 2-heptanol, 4'-methylacetophenone, benzaldehyde, methyl jasmonate, β-caryophyllene, caryophyllene, trans-2-hexenal, cedrol, farnesol, 2-pentadecanone, farnesene, β-ionone, lauryl aldehyde, and vetiver essential oil.

6. The double attractant for the feeding habits of adult Chilo suppressalis according to claim 1, characterized in that: The sex pheromone of the Chilo suppressalis is selected from one of Z-11-hexadecenal, Z-13-octadecenal, and Z-9-hexadecenal, or a combination of several of them.

7. The double attractant for the feeding habits of adult Chilo suppressalis according to claim 6, characterized in that: The ratio of the components in the Chilo suppressalis sex pheromone is Z-11-hexadecenal, Z-13-octadecenal, and Z-9-hexadecenal=48:6:

5.

8. The double attractant for the feeding habits of adult Chilo suppressalis according to claim 1, characterized in that: The proportions of the components in the active substance are as follows: benzaldehyde 0.4-6.7%, methyl salicylate 0.07-6.7%, methyl jasmonate 3.3-67%, caryophyllene 0.33-6.7%, trans-2-hexenal 0.7-53%, linalool 0.7-50%, jasmine essence 0.7-70%, vetiver essential oil 6.7-50%, and Chilo suppressalis sex pheromone 0.07-6.7%.

9. The double attractant for the feeding habits of adult Chilo suppressalis according to claim 8, characterized in that: The proportions of the components in the active substance are: benzaldehyde 1.5%, methyl salicylate 1.3%, methyl jasmonate 6.7%, caryophyllene 1.3%, trans-2-hexenal 13.3%, linalool 20%, jasmine essence 30%, vetiver essential oil 25%, and Chilo suppressalis sex pheromone 0.90%.

10. The use of the double attractant for the feeding habits of adult Chilo suppressalis according to any one of claims 1 to 9, characterized in that: The double attractant for the feeding habits of adult striped stem borers is put into a bagged or boxed container and placed in a trap for use.

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