A kind of slug repellent and preparation method thereof

Abstract

The present invention discloses a slug repellent, comprising a liquid volatile chemical standard and a liquid auxiliary component, wherein the mass percentage of the liquid volatile chemical standard is 0.01%-1%. The liquid volatile chemical standard is one or more of hexanal, nonanal, decanal, and β-cyclocitral, and the purity of hexanal, nonanal, decanal, and β-cyclocitral is all greater than 97%. The auxiliary component is liquid paraffin. The present invention also discloses a method for preparing a slug repellent. The present invention adopts the above-mentioned slug repellent and its preparation method, which can reduce environmental pollution caused by chemical pesticides and solve problems such as toxicity to non-target organisms.

Description

Technical Field

[0001] The invention relates to the technical field of repellents, and in particular to a slug repellent and a preparation method thereof. Background Art

[0002] Slugs, also known as slugs, are hermaphroditic, omnivorous mollusks that mainly harm lettuce, cabbage, rapeseed, tobacco, etc., posing a huge threat to agricultural production in many countries and regions in Asia and Europe. At present, the control methods for slugs in agricultural production rely on chemical agents such as carbaryl, metaldehyde, and their combination. Due to the side effects of chemical pesticides such as environmental pollution and toxicity to non-target organisms, green and efficient pest control measures such as attractants and repellents are being promoted in the market. Repellents have been widely used in the control of agricultural insects, but no repellents have been reported for slugs. The development of repellents for mollusks such as slugs has broad market application prospects and can directly reduce the amount of pesticides used and reduce the harm caused by chemical pesticides. Summary of the invention

[0003] The purpose of the present invention is to provide a slug repellent and a preparation method thereof, so as to reduce environmental pollution caused by chemical pesticides and solve the problems of toxicity to non-target organisms.

[0004] To achieve the above object, the present invention provides a slug repellent, comprising a liquid volatile chemical standard and a liquid auxiliary component, wherein the mass percentage of the liquid volatile chemical standard is 0.01%-1%.

[0005] Preselected, the liquid volatile chemical standard is one or more of hexanal, nonanal, decanal, β-cyclocitral, benzyl alcohol, α-ionone, β-pinene, geraniol, and 2-hexanol, and the purity of hexanal, nonanal, decanal, β-cyclocitral, benzyl alcohol, α-ionone, β-pinene, geraniol, and 2-hexanol is all greater than 97%.

[0006] Preferably, the liquid auxiliary component is liquid paraffin.

[0007] The preparation method of the slug repellent comprises: adding 0.01% to 1% by mass of one or more of hexanal, nonanal, decanal, β-cyclocitral, benzyl alcohol, α-ionone, β-pinene, geraniol and 2-hexanol to the remaining amount of liquid paraffin, shaking and mixing evenly to obtain the repellent.

[0008] The advantages and positive effects of the slug repellent and the preparation method thereof described in the present invention are: the present invention adopts hexanal, nonanal, decanal, β-cyclocitral, benzyl alcohol, α-ionone, β-pinene, geraniol, and 2-hexanol as liquid volatile chemical standard products, and utilizes their volatile odor to achieve the repellent effect on slugs, and a lower concentration can achieve a better repellent effect, thereby reducing the use of chemical drugs, and reducing the pollution of chemical pesticides to the environment and the toxicity to non-target organisms. The preparation method of the repellent is simple, and only the volatile chemical standard product needs to be evenly mixed with liquid paraffin, and then sprayed for use, and the use method is simple and easy to operate. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 The present invention is a schematic diagram of a behavioral test of a slug repellent and a preparation method thereof. DETAILED DESCRIPTION

[0010] The technical solution of the present invention is further described below through the accompanying drawings and embodiments.

[0011] Example 1

[0012] Add 0.01% by mass of one of hexanal, nonanal, decanal, β-cyclocitral, benzyl alcohol, α-ionone, β-pinene, geraniol, and 2-hexanol to the remaining amount of liquid paraffin, shake and mix evenly to obtain a repellent with a concentration of 0.01%.

[0013] Example 2

[0014] Add 0.1% by mass of one of hexanal, nonanal, decanal, β-cyclocitral, benzyl alcohol, α-ionone, β-pinene, geraniol and 2-hexanol to the remaining amount of liquid paraffin, shake and mix evenly to obtain a repellent with a concentration of 0.1%.

[0015] Example 3

[0016] Add 1% by mass of one of hexanal, nonanal, decanal, β-cyclocitral, benzyl alcohol, α-ionone, β-pinene, geraniol, and 2-hexanol to the remaining amount of liquid paraffin, shake and mix evenly, and obtain a repellent with a concentration of 1%. Slugs hide during the day and come out at night. Under dark conditions, smell is an important sense for slugs to locate hosts. The way they locate hosts is mainly to rely on the sense of smell to sense the volatile chemicals released by the host plants. Therefore, the olfactory behavior is used to determine the repellent effect of the repellent on slugs.

[0017] Use a puncher to punch a 2 cm diameter lettuce leaf disc on the lettuce leaf, spray the repellent prepared in Example 1-3 on the leaf disc, spraying a layer of it, the group sprayed with the repellent is the treatment group, and the group sprayed with only liquid paraffin is the control group, the lettuce leaf disc is symmetrically placed in a glass culture dish with a diameter of 19 cm, and the treatment group and the control group are spaced apart, as shown in FIG. Figure 1 As shown. Then the slugs that had been starved for 24 hours were placed one by one in the center of the culture dish and placed in a dark environment. The olfactory choice of the slugs was observed after 5 minutes. At least 40 slugs were tested in each experiment, and the culture dish was cleaned after every 5 slugs tested. The number of slugs in the treatment group and the control group was counted and converted into a percentage. The chi-square test was used to analyze the significance of the difference between the treatment group and the control group to determine the effect of the compound on the olfactory choice behavior of the slug. The test results are shown in Table 1.

[0018] Table 1 Behavioral response of slugs to different concentrations of repellents

[0019]

[0020]

[0021] According to the data analysis in Table 1, it can be seen that hexanal, nonanal, β-pinene, and geraniol have the best repellent effect on slugs at a concentration of 1%, β-cyclocitral, benzyl alcohol, α-ionone, and 2-hexanol have the best repellent effect on slugs at a concentration of 0.1%-1%, and decanal has the strongest repellent effect on slugs at a concentration of 0.01%, and can be used as the main ingredients for developing field slug repellents.

[0022] Therefore, the present invention adopts the above-mentioned slug repellent and the preparation method thereof, which can solve the problems of environmental pollution caused by chemical pesticides and toxicity to non-target organisms.

[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that they can still modify or replace the technical solution of the present invention with equivalents, and these modifications or equivalent replacements cannot cause the modified technical solution to deviate from the spirit and scope of the technical solution of the present invention.

Claims

1. The use of hexanal as a slug repellent, characterized in that: The mass percentage of hexanal is 0.1%-1%.

2. The use of hexanal as a slug repellent according to claim 1, characterized in that: The purity of the hexanal is >97%.

3. The use of hexanal as a slug repellent according to claim 2, characterized in that: The slug repellent comprises a liquid auxiliary component, and the liquid auxiliary component is liquid paraffin.

4. The use of hexanal as a slug repellent according to claim 3, characterized in that: The preparation method of the slug repellent is as follows: 0.1%-1% of hexanal by mass is added into the remaining amount of liquid paraffin, and the mixture is shaken and mixed evenly to obtain the repellent.

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