Attractant for taxolonghorn beetles

Abstract

The invention belongs to the technical field of forestry pest prevention and control, and particularly relates to an attractant for fir-brown longhorn beetles. According to the invention, the 3-hydroxy-2-hexanone, the 4-n-heptyloxybutyraldehyde and the polyol mixture are mixed according to an ecological principle to attract natural enemy insects to gather, so that the harm of pests is controlled; according to the invention, the mass ratio of 3-hydroxy-2-hexanone to 4-n-heptyloxybutyraldehyde to a polyol mixture is (2-3): (0.2-0.8): (0.5-1); the attractant is reasonable in proportion, has a remarkable attraction effect on the taxolonghorn beetles, has the advantages of being efficient, environmentally friendly, safe, long in lasting period and the like, and has important significance on protection of common tree species such as cedarwood, cryptomeria fortunei and cedarwood harmed by the taxolonghorn beetles.

Description

Technical Field

[0001] The invention belongs to the technical field of forest pest control, and in particular relates to an attractant for palm beetles. Background Art

[0002] The fir palm beetle can harm fir, cryptomeria, cypress, etc. The newly hatched larvae can feed, first eating the rough bark, and then boring into the phloem and sapwood. The mature larvae bore into the heartwood of the xylem, interrupting the transportation of water and nutrients, causing the affected trees to wither and die. The larvae of the fir palm beetle do not excrete feces outside the trunk during the entire feeding process, but first bore and then fill, so its feeding process is very concealed. At the same time, because the adult insects have a strong selectivity in laying eggs, the insect population density per plant is relatively large, and the damage is serious. For many years, how to effectively prevent and control the fir palm beetle has been a key research topic for many scientific researchers.

[0003] In current production, the control of cedar palm beetle mainly includes chemical pesticide control, physical control and biological control. At present, chemical pesticide control is still the main method. Commonly used agents include trichlorfon, cypermethrin and pyrethrin. The characteristics of chemical pesticide control are easy to use and quick effect, but the long-term and large-scale use of chemical pesticides has caused problems such as agricultural product pollution and ecological environment pollution. Physical control mainly adopts methods such as manual killing and light trapping. This method is suitable for the peak period of adult emergence and has obvious effects, but it consumes a lot of manpower and material resources. Chemical information refers to some chemical substances that can transmit information produced by organisms during their life activities. People often use insect pheromones to trap harmful organisms to reduce the population density of pests. The use of pheromones is an important representative of biological control. The use of chemical pheromones to control cedar palm beetle has the characteristics of environmental friendliness, long-lasting effect and convenience of use, which is of great significance for the control of cedar pests. Summary of the invention

[0004] The object of the present invention is to provide an attractant for Psoralea corylifolia to solve the problems raised in the above-mentioned background technology.

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

[0006] An attractant for palm leaf beetle comprises an active ingredient and a solvent, wherein the active ingredient comprises 3-hydroxy-2-hexanone, 4-n-heptyloxybutyraldehyde and a polyol mixture, and the mass ratio of 3-hydroxy-2-hexanone:4-n-heptyloxybutyraldehyde:polyol mixture is 2-3:0.2-0.8:0.5-1; and the solvent is an alcohol organic solvent.

[0007] Among them, the English chemical name of 3-hydroxy-2-hexanone is: 3-hydroxyhexan-2-one.

[0008] Among them, the English chemical name of 4-n-heptyloxybutanal is: 4-heptyloxy butanol.

[0009] It should be further explained that the mass ratio of the active ingredient 3-hydroxy-2-hexanone to 4-n-heptyloxybutyraldehyde is 4:1.

[0010] It should be further explained that the mass ratio of 3-hydroxy-2-hexanone to the polyol mixture is 2:1.

[0011] A more optimal ratio of the active ingredients is: the mass ratio of 3-hydroxy-2-hexanone: 4-n-heptyloxybutyraldehyde: polyol mixture is 2:0.5:1.

[0012] Among them, the mass concentration of 3-hydroxy-2-hexanone is 50 mg / ml

[0013] It should be further explained that the solvent is isopropanol.

[0014] Further, the polyol mixture includes 6,10-dimethylundecane-5,9-dien-2-ol, methylthioamino alcohol, and monoheterocarbyl alcohol, wherein the mass ratio of 6,10-dimethylundecane-5,9-dien-2-ol:methylthioamino alcohol:monoheterocarbyl alcohol is 3:1:2.

[0015] Among them, the English chemical name of 6,10-dimethylundeca-5,9-dien-2-ol is: fuscumol.

[0016] Among them, the English chemical name of methionine is: Methionol.

[0017] Among them, the English chemical name of monochamol is: monochamol.

[0018] The above polyol mixture also includes one or a combination of (2R*,3R*)-2,3-hexanediol, (2R*,3R*)-2,3-octanediol, (2R*,3S*)-2,3-hexanediol, and (2R*,3S*)-2,3-octanediol, and the mass of which accounts for 10% to 15% of the total mass of the polyol mixture.

[0019] The method for using the above attractant for the brown longhorn beetle comprises the following steps:

[0020] 1) Weigh 3-hydroxy-2-hexanone, 4-n-heptyloxybutyraldehyde, and polyol mixture respectively for later use;

[0021] 2) respectively adding 3-hydroxy-2-hexanone, 4-n-heptyloxybutyraldehyde and the polyol mixture in step 1) into a centrifuge tube containing 1 ml of isopropanol;

[0022] 3) Place the centrifuge tube in a 5.1×7.6 cm small bag, open the bottle cap and put slow-release cotton in the bottle mouth, and hang it in the trap to lure the cedar palm beetle.

[0023] Compared with the prior art, the beneficial effects of the present invention are: the present application has a reasonable ratio of 3-hydroxy-2-hexanone, 4-n-heptyloxybutyraldehyde, and a polyol mixture, has a significant luring effect on the brown longhorn beetle, has the advantages of high efficiency, environmental protection, safety, and long lasting effect. The present application is of great significance for protecting common tree species such as fir, cryptomeria, and cypress that are harmed by the brown longhorn beetle. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a comparative diagram of the trapping effects of 3R, S, and 3R+S on the brown longhorn beetle;

[0025] Figure 2 This is a comparative diagram of the trapping effects of 3R, L, and 3R+L on the brown longhorn beetle;

[0026] Figure 3 This is a comparison chart of the trapping effects of 3R, S+L, and 3R+S+L on the brown longhorn beetle. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] In the following examples, the abbreviations of 3-hydroxy-2-hexanone, 4-n-heptyloxybutyraldehyde and the polyol mixture are 3R, S and L, respectively.

[0029] Example 1

[0030] 1) In March 2019, the experiment was conducted at Gaofeng Forest Farm in Nanning City, Guangxi Zhuang Autonomous Region. 50 mg of 3-hydroxy-2-hexanone was measured and placed in a centrifuge tube containing 1 ml of isopropanol for later use;

[0031] 2) Place the centrifuge tube in a 5.1×7.6 cm small bag, open the bottle cap and put slow-release cotton in the bottle cap, and hang it in the trap to lure the cedar palm beetle. Repeat 4 times;

[0032] 3) Specific trapping effects such as Figure 1 shown.

[0033] Example 2

[0034] 1) In March 2019, the experiment was conducted at Gaofeng Forest Farm in Guangxi Zhuang Autonomous Region. 50 mg of 3-hydroxy-2-hexanone and 12.5 mg of 4-n-heptyloxybutyraldehyde were measured and placed in a centrifuge tube containing 1 ml of isopropanol for later use;

[0035] 2) Place the centrifuge tube in a 5.1×7.6 cm small bag, open the bottle cap and put slow-release cotton in the bottle cap, and hang it in the trap to lure the pine palm beetle. Repeat four times;

[0036] 3) Specific trapping effects such as Figure 1 shown.

[0037] Example 3

[0038] 1) In March 2019, the experiment was conducted at Gaofeng Forest Farm in Nanning City, Guangxi Zhuang Autonomous Region. 50 mg of 3-hydroxy-2-hexanone was measured and placed in a centrifuge tube containing 1 ml of isopropanol for later use;

[0039] 2) Place the centrifuge tube in a 5.1×7.6 cm small bag, open the bottle cap and put slow-release cotton in the bottle cap, and hang it in the trap to lure the cedar palm beetle;

[0040] 3) Specific trapping effects such as Figure 2 shown.

[0041] Example 4

[0042] 1) In March 2019, the experiment was conducted at Gaofeng Forest Farm in Nanning City, Guangxi Zhuang Autonomous Region. 50 mg of 3-hydroxy-2-hexanone and 25 mg of a polyol mixture were placed in a centrifuge tube containing 1 ml of isopropanol for later use;

[0043] 2) Place the centrifuge tube in a 5.1×7.6 cm small bag, open the bottle cap and put slow-release cotton in the bottle cap, and hang it in the trap to lure the cedar palm beetle;

[0044] 3) Specific trapping effects such as Figure 2 shown.

[0045] Example 5

[0046] 1) In March 2019, the experiment was conducted at Gaofeng Forest Farm in Nanning City, Guangxi Zhuang Autonomous Region. 50 mg of 3-hydroxy-2-hexanone was measured and placed in a centrifuge tube containing 1 ml of isopropanol for later use;

[0047] 2) Place the centrifuge tube in a 5.1×7.6 cm small bag, open the bottle cap and put slow-release cotton in the bottle cap, and hang it in the trap to lure the cedar palm beetle;

[0048] 3) Specific trapping effects such as Figure 3 shown.

[0049] Example 6

[0050] 1) In March 2019, the experiment was conducted at Gaofeng Forest Farm in Nanning City, Guangxi Zhuang Autonomous Region. 25 mg of polyol mixture and 12.5 mg of 4-n-heptyloxybutyraldehyde were measured and placed in a centrifuge tube containing 1 ml of isopropanol for later use;

[0051] 2) Place the centrifuge tube in a 5.1×7.6 cm small bag, open the bottle cap and put slow-release cotton in the bottle cap, and hang it in the trap to lure the cedar palm beetle;

[0052] 3) Specific trapping effects such as Figure 3 shown.

[0053] Example 7

[0054] 1) In March 2019, the experiment was conducted at Gaofeng Forest Farm in Nanning City, Guangxi Zhuang Autonomous Region. 50 mg of 3-hydroxy-2-hexanone, 12.5 mg of 4-n-heptyloxybutyraldehyde and 25 mg of a polyol mixture were placed in a centrifuge tube containing 1 ml of isopropanol for later use;

[0055] 2) Place the centrifuge tube in a 5.1×7.6 cm small bag, open the bottle cap and put slow-release cotton in the bottle cap, and hang it in the trap to lure the cedar palm beetle;

[0056] 3) Specific trapping effects such as Figure 3 shown.

[0057] The polyol mixture in Examples 4, 6 and 7 includes 6,10-dimethylundecyl-5,9-diene-2-ol, methylthioamino alcohol and monohexanediol, wherein the mass ratio of 6,10-dimethylundecyl-5,9-diene-2-ol:methylthioamino alcohol:monohexanediol is 3:1:2; and also includes (2R*,3R*)-2,3-hexanediol,

[0058] The mass ratio of (2R*,3R*)-2,3-octanediol, (2R*,3S*)-2,3-hexanediol, (2R*,3S*)-2,3-octanediol, (2R*,3R*)-2,3-hexanediol: (2R*,3R*)-2,3-octanediol: (2R*,3S*)-2,3-hexanediol: (2R*,3S*)-2,3-octanediol is 1:1:1:1; (2R*,3R*)-2,3-hexanediol,

[0059] The total mass of (2R*,3R*)-2,3-octanediol, (2R*,3S*)-2,3-hexanediol and (2R*,3S*)-2,3-octanediol accounts for 10% to 15% of the total mass of the polyol mixture.

[0060] like Figure 1-3As shown, the trapping effect of 3R+S and 3R+L is significantly better than that of 3R, S, and L alone, and the effect of S+L is not ideal either; when 3R+S+L is used, the trapping effect is the best.

[0061] It will be apparent to those skilled in the art that the invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other specific forms without departing from the spirit or essential features of the invention. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations falling within the meaning and scope of the equivalent elements of the claims be included in the invention. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

[0062] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. An attractant for Cistanche deserticola, characterized in that: The invention comprises effective ingredients and solvents, wherein the effective ingredients comprise 3-hydroxy-2-hexanone, 4-n-heptyloxybutyraldehyde and a polyol mixture, and the mass ratio of 3-hydroxy-2-hexanone:4-n-heptyloxybutyraldehyde:polyol mixture is 2-3:0.2-0.8:0.5-1; and the solvent is an alcohol organic solvent.

2. The attractant for Cistanche deserticola according to claim 1, characterized in that: The mass ratio of the 3-hydroxy-2-hexanone to 4-n-heptyloxybutyraldehyde is 4:

1.

3. The attractant for Cistanche deserticola according to claim 1, characterized in that: The mass ratio of the 3-hydroxy-2-hexanone to the polyol mixture is 2:

1.

4. The attractant for Cistanche deserticola according to claim 1, characterized in that: The solvent is isopropanol.

5. The attractant for Cistanche deserticola according to claim 3, characterized in that: The polyol mixture includes 6,10-dimethylundecyl-5,9-dien-2-ol, methylthioamino alcohol, and monoheterocarbyl alcohol, wherein the mass ratio of 6,10-dimethylundecyl-5,9-dien-2-ol:methylthioamino alcohol:monoheterocarbyl alcohol is 3:1:

2.

6. The attractant for Cistanche deserticola according to claim 5, characterized in that: The polyol mixture also includes (2R*, 3R*)-2,3-hexanediol, (2R*, 3R*)-2,3-octanediol, (2R*,3S*)-2,3-hexanediol, (2R*,3S*)-2,3-octanediol or a combination of the two or more thereof.

7. A method for using an attractant for C. serrata, characterized in that The following steps are involved: 1) Weigh 3-hydroxy-2-hexanone, 4-n-heptyloxybutyraldehyde, and polyol mixture respectively for later use; 2) respectively adding 3-hydroxy-2-hexanone, 4-n-heptyloxybutyraldehyde and the polyol mixture in step 1) into a centrifuge tube containing 1 ml of isopropanol; 3) Place the centrifuge tube in a 5.1×7.6 cm small bag, open the bottle cap and put slow-release cotton in the bottle mouth, and hang it in the trap to lure the cedar palm beetle.

8. The method for using the attractant for Palmyra alternata according to claim 7, characterized in that: The mass ratio of 3-hydroxy-2-hexanone:4-n-heptyloxybutyraldehyde:polyol mixture is 2:0.5:1.

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