Special pest control agent for garden green land and preparation method of special pest control agent

Abstract

The invention provides a special pest control agent for garden green land and a preparation method thereof, and belongs to the technical field of pest control. The prepared special pest control agent for the garden green land is prepared from the following raw materials: Chinese juniper leaves, oleander, pomegranate rind, radix sophorae flavescentis, tripterygium wilfordii, pyrethrum, tobacco, cinnamon and a surfactant. According to the prepared special pest control agent for the garden green land, multiple plant raw materials are adopted as main components, the proportion of the plant raw materials is adjusted, and the prepared pest control agent has a high control effect on multiple pests in the garden green land and has the advantages of being environmentally friendly and high in safety; and no influence is caused on the health of people in the garden green land.

Description

Technical Field

[0001] The invention relates to the technical field of pest control, and in particular to a special pest control agent for gardens and green lands and a preparation method thereof. Background Art

[0002] Green gardens are an important guarantee for the quality of the urban ecological environment. They play a pivotal role in improving the urban ecosystem. Green gardens can not only purify the air, but also reduce noise pollution, monitor the climate environment, conserve water resources, and improve the urban climate. Green gardens are usually open to the public and are mainly used for recreation. They also have ecological, beautification, and disaster prevention functions.

[0003] With the acceleration of the urban greening process in my country, the proportion of greening in urban construction is getting larger and larger. Due to the large amount of vegetation, garden green land is a good habitat for many mosquitoes and insects, and it is also a good place for breeding many mosquitoes and insects. However, the large number of mosquitoes and insects often cause intrusion to people in the park green land and cause certain damage to the vegetation. In the prior art, pesticides are often used to kill mosquitoes, and most of the pesticides are chemical agents. Although they are highly effective, the pesticides remain on the vegetation green land, which will pollute the environment on the one hand and do not meet the environmental protection requirements, and on the other hand, it will cause health risks to people in the park green land.

[0004] In addition, existing technologies also provide physical control and biological control, but the effects of physical and biological control are relatively poor, and usually need to be combined with chemical control, or a combination of multiple control methods.

[0005] For example, Chinese patent CN112166912A discloses a method for controlling lawn pests and diseases, which specifically discloses that the disease control is carried out by applying corresponding agents and pruning operations according to the disease type and lawn control area, and the pest control is carried out by using drugs and biological control according to the pest index. When the pest index is low, drug control is used, and when the pest index is high, biological control is used first and then drug control. The patent provides a means of combining physical control, biological control and chemical control, proving the important role of pest control agents in lawn pests and diseases.

[0006] Chinese patent CN102669190A discloses a botanical insecticide for garden plants, its preparation method and use, which is composed of 70-90 parts of plant dry powder, 2-6 parts of inorganic base, and 5-10 parts of powdered surfactant. Although the insecticide can work against most pests, it has poor control effect on many pests.

[0007] It can be seen that preparing an environmentally friendly, residue-free, and effective insect pest control agent is crucial for insect pest control in gardens and green spaces. Summary of the invention

[0008] In view of this, the purpose of the present invention is to provide a special pest control agent for gardens and green spaces which can have good control effects on various diseases and insect pests in gardens and green spaces and is environmentally friendly and residue-free.

[0009] In order to achieve the above object, the present invention provides the following technical solutions:

[0010] A special insect pest control agent for gardens and green lands, comprising the following raw materials in parts by weight:

[0011] 3-5 parts of cypress leaves, 0.5-2 parts of oleander, 8-12 parts of pomegranate peels, 8-12 parts of sophora flavescens, 2-5 parts of tripterygium wilfordii, 1-2 parts of pyrethrum, 3-10 parts of tobacco, 2-3 parts of cinnamon, and 0.5-2 parts of a surfactant.

[0012] Preferably, the garden green land special insect pest control agent comprises the following raw materials in parts by weight:

[0013] 5 parts of juniper leaves, 1.5 parts of oleander, 10 parts of pomegranate peels, 9 parts of sophora flavescens, 3 parts of tripterygium wilfordii, 2 parts of pyrethrum, 10 parts of tobacco, 2 parts of cinnamon, and 1.2 parts of surfactant.

[0014] Preferably, the surfactant is a silicone surfactant.

[0015] More preferably, the organosilicon surfactant is ethoxy-modified polytrisiloxane.

[0016] Another object of the present invention is to provide a method for preparing a special insect pest control agent for gardens and green lands.

[0017] The preparation method of the special insect pest control agent for gardens and green lands comprises the following steps:

[0018] (1) Weigh plant raw materials including cypress leaves, oleander, pomegranate peel, sophora flavescens, tripterygium wilfordii, pyrethrum, tobacco, and cinnamon according to proportion and wash them;

[0019] (2) mixing the washed plant material with water, beating the mixture, boiling and filtering the mixture to obtain a residue A and a filtrate A;

[0020] (3) adding water to the filter residue A, boiling and filtering again to obtain filter residue B and filtrate B;

[0021] (4) adding ethanol to the filter residue B, extracting and filtering to obtain filter residue C and filtrate C;

[0022] (5) washing the filter residue C 3 to 4 times to obtain a washing liquid;

[0023] (6) mixing and concentrating the filtrate A, the filtrate B, the filtrate C and the washing liquid to obtain a plant extract;

[0024] (7) The plant extract is mixed with a surfactant to obtain the special insect pest control agent for gardens and green spaces.

[0025] Preferably, in step (2), the mass ratio of the plant material to water is 1:3-4; and the boiling time is 0.5-1 h.

[0026] Preferably, in step (3), the mass ratio of the filter residue A to water is 1:2-3; and the boiling time is 0.5-1 h.

[0027] Preferably, in step (4), the mass ratio of the filter residue B to ethanol is 1:2-4; and the extraction time is 1-3 hours.

[0028] Preferably, the washing detergent in step (5) is water or ethanol; and the mass ratio of the filter residue C to the washing detergent is 1:2-3.

[0029] Preferably, the liquid content in the concentrated plant extract in step (6) is 30-60 wt%.

[0030] The plant raw materials used in the invention, namely, cypress leaves, oleander, pomegranate peel, sophora flavescens, tripterygium wilfordii, pyrethrum, tobacco and cinnamon, have the following effects.

[0031] Cypress leaves: have the effects of killing insects, removing filth, dispersing knots and detoxifying, and contain ingredients such as cypress brain and cypress oil.

[0032] Oleander: The leaves, bark, roots, flowers and seeds of oleander contain a variety of glycosides, which are extremely toxic.

[0033] Pomegranate peel: Contains a large amount of tannins and alkaloids, has antibacterial and antiviral effects, can inhibit the respiration of insects after poisoning, and achieve the effect of repelling insects and killing insects.

[0034] Sophora flavescens: Contains matrine, which has insecticidal effects and a wide range of insecticidal effects.

[0035] Tripterygium wilfordii: It has the effects of dispelling wind and dampness, promoting blood circulation and unblocking meridians, reducing swelling and relieving pain, killing insects and detoxifying. It is commonly used for rheumatoid arthritis, rheumatic arthritis, glomerulonephritis, nephrotic syndrome, lupus erythematosus, Sjögren's syndrome, Behcet's disease, eczema, psoriasis, leprosy, scabies, and stubborn ringworm.

[0036] Pyrethrum: Contains pyrethrin and pyrethrin. Pyrethrin, also known as pyrethrin, is a colorless, viscous, oily liquid. When mosquitoes come into contact with it, they will suffer from nerve paralysis, poisoning and death.

[0037] Tobacco: Tobacco is warm in nature, sweet in taste, and poisonous. It has the effects of reducing swelling, detoxifying, and killing insects. It is mainly used for carbuncle, tinea capitis, white ringworm, baldness, snake bites, etc. It can also treat neck carbuncle, back carbuncle, wind phlegm, and goose knee.

[0038] Cinnamon: Cinnamon is an evergreen tree of the Lauraceae family, containing cinnamon oil, whose main chemical components are trans-cinnamaldehyde, trans-o-methoxycinnamaldehyde and cinnamyl acetate. Cinnamaldehyde has multiple activities against pests, such as contact stomach poison, antifeedant, growth and development inhibition, repellent and attractant.

[0039] Compared with the prior art, the present invention has the following beneficial effects: the present invention provides a special insect pest control agent for gardens and green spaces, which adopts a variety of plant raw materials as main ingredients, among which oleander, tripterygium wilfordii, pomegranate peel, pyrethrum, tobacco, and cinnamon have good insecticidal effects; cypress leaves and pomegranate peels have both insect repellent effects, and improve the contact killing effect on pests. The present invention adds a surfactant, which can improve the dispersibility, uniformity, and film-forming properties of the agent on the plant surface, and improve the insecticidal effect. In addition, the present invention adjusts the plant components and their proportions, and the prepared insect pest control agent is green and environmentally friendly, has high safety, and will not affect the health of people in gardens and green spaces. The present invention adopts a preparation method combining water extraction and alcohol extraction to improve the extraction efficiency of effective ingredients in plants, increase the content of effective ingredients in the insect pest control agent, and further improve the insecticidal effect. The special insect pest control agent for gardens and green spaces prepared by the present invention has a strong control effect on a variety of pests in gardens and green spaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] Figure 1 The safety test results of the garden green land special insect pest control agent prepared in Example 1 of the present invention. DETAILED DESCRIPTION

[0041] The present invention is further described below in conjunction with the examples. The raw material parts in the following examples are all parts by mass; the preparation methods in the following examples are all conventional methods in the art unless otherwise specified.

[0042] Example 1

[0043] A special insect pest control agent for gardens and green lands, comprising the following raw materials in parts by weight:

[0044] 5 parts of cypress leaves, 1.5 parts of oleander, 10 parts of pomegranate peels, 9 parts of sophora flavescens, 3 parts of tripterygium wilfordii, 2 parts of pyrethrum, 10 parts of tobacco, 2 parts of cinnamon, and 1.2 parts of ethoxy-modified polytrisiloxane.

[0045] The preparation method of the special insect pest control agent for gardens and green lands comprises the following steps:

[0046] (1) Weigh plant raw materials including cypress leaves, oleander, pomegranate peel, sophora flavescens, tripterygium wilfordii, pyrethrum, tobacco, and cinnamon according to proportion and wash them;

[0047] (2) adding 3 times the mass of water to the washed plant material, slurrying, then boiling for 0.5 h, filtering to obtain residue A and filtrate A;

[0048] (3) adding 3 times the mass of water to the filter residue A, boiling again for 0.5 h, and filtering to obtain filter residue B and filtrate B;

[0049] (4) adding 4 times the mass of ethanol (98%) to the filter residue B, leaching for 2 hours, filtering, and obtaining a filter residue C and a filtrate C;

[0050] (5) washing the filter residue C four times with water as a detergent to obtain a washing liquid; the mass ratio of the filter residue C to the detergent in each washing process is 1:2;

[0051] (6) mixing and concentrating the filtrate A, the filtrate B, the filtrate C and the washing liquid to obtain a plant extract, wherein the liquid content in the plant extract is 50 wt %;

[0052] (7) The plant extract is mixed with a surfactant to obtain the special insect pest control agent for gardens and green spaces.

[0053] Example 2

[0054] A special insect pest control agent for gardens and green lands, comprising the following raw materials in parts by weight:

[0055] 5 parts of cypress leaves, 2 parts of oleander, 9 parts of pomegranate peels, 11 parts of sophora flavescens, 2 parts of tripterygium wilfordii, 1 part of pyrethrum, 4 parts of tobacco, 3 parts of cinnamon, and 1.5 parts of ethoxy-modified polytrisiloxane.

[0056] The preparation method is the same as that in Example 1.

[0057] Example 3

[0058] A special insect pest control agent for gardens and green lands, comprising the following raw materials in parts by weight:

[0059] 4 parts of cypress leaves, 1 part of oleander, 10 parts of pomegranate peels, 8 parts of sophora flavescens, 2 parts of tripterygium wilfordii, 2 parts of pyrethrum, 5 parts of tobacco, 3 parts of cinnamon, and 1 part of ethoxy-modified polytrisiloxane.

[0060] The preparation method is the same as that in Example 1.

[0061] Example 4

[0062] A special insect pest control agent for gardens and green lands, comprising the following raw materials in parts by weight:

[0063] 5 parts of cypress leaves, 2 parts of oleander, 10 parts of pomegranate peels, 9 parts of bitter, 3 parts of tripterygium wilfordii, 2 parts of pyrethrum, 4 parts of tobacco, 3 parts of cinnamon, and 1.5 parts of ethoxy-modified polytrisiloxane.

[0064] The preparation method is the same as that in Example 1.

[0065] Example 5

[0066] A special insect pest control agent for gardens and green lands, comprising the following raw materials in parts by weight:

[0067] 4 parts of cypress leaves, 2 parts of oleander, 9 parts of pomegranate peels, 10 parts of sophora flavescens, 4 parts of tripterygium wilfordii, 2 parts of pyrethrum, 7 parts of tobacco, 3 parts of cinnamon, and 1.5 parts of ethoxy-modified polytrisiloxane.

[0068] The preparation method is the same as that in Example 1.

[0069] Comparative Example 1

[0070] A special insect pest control agent for gardens and green lands, comprising the following raw materials in parts by weight:

[0071] 5 parts of juniper leaves, 10 parts of pomegranate peels, 9 parts of sophora flavescens, 3 parts of tripterygium wilfordii, 2 parts of pyrethrum, 10 parts of tobacco, 2 parts of cinnamon, and 1.2 parts of ethoxy-modified polytrisiloxane.

[0072] The preparation method is the same as that in Example 1.

[0073] Comparative Example 2

[0074] A special insect pest control agent for gardens and green lands, comprising the following raw materials in parts by weight:

[0075] 5 parts of cypress leaves, 1.5 parts of oleander, 10 parts of pomegranate peels, 3 parts of tripterygium wilfordii, 2 parts of pyrethrum, 10 parts of tobacco, 2 parts of cinnamon, and 1.2 parts of ethoxy-modified polytrisiloxane.

[0076] The preparation method is the same as that in Example 1.

[0077] Comparative Example 3

[0078] A special insect pest control agent for gardens and green lands, comprising the following raw materials in parts by weight:

[0079] 5 parts of cypress leaves, 1.5 parts of oleander, 10 parts of pomegranate peels, 9 parts of sophora flavescens, 2 parts of pyrethrum, 10 parts of tobacco, 2 parts of cinnamon, and 1.2 parts of ethoxy-modified polytrisiloxane.

[0080] The preparation method is the same as that in Example 1.

[0081] Comparative Example 4

[0082] A special insect pest control agent for gardens and green lands, comprising the following raw materials in parts by weight:

[0083] 5 parts of juniper leaves, 1.5 parts of oleander, 10 parts of pomegranate peels, 9 parts of sophora flavescens, 3 parts of tripterygium wilfordii, 2 parts of pyrethrum, 10 parts of tobaccos, and 2 parts of cinnamon bars.

[0084] The preparation method is the same as that in Example 1.

[0085] Comparative Example 5

[0086] A special insect pest control agent for gardens and green lands, comprising the following raw materials in parts by weight:

[0087] 5 parts of cypress leaves, 1.5 parts of oleander, 10 parts of pomegranate peels, 9 parts of sophora flavescens, 3 parts of tripterygium wilfordii, 2 parts of pyrethrum, 10 parts of tobacco, 2 parts of cinnamon, and 1.2 parts of ethoxy-modified polytrisiloxane.

[0088] The preparation method is the same as that of Example 1, except that the second water extraction is not performed in Comparative Example 5.

[0089] Comparative Example 6

[0090] A special insect pest control agent for gardens and green lands, comprising the following raw materials in parts by weight:

[0091] 5 parts of cypress leaves, 1.5 parts of oleander, 10 parts of pomegranate peels, 9 parts of sophora flavescens, 3 parts of tripterygium wilfordii, 2 parts of pyrethrum, 10 parts of tobacco, 2 parts of cinnamon, and 1.2 parts of ethoxy-modified polytrisiloxane.

[0092] The preparation method is the same as that of Example 1, except that alcohol extraction is not performed in Comparative Example 6.

[0093] Test 1: Insecticidal effect test

[0094] Take 10g of the garden green land special insect pest control agent prepared in Examples 1 to 5 and Comparative Examples 6 respectively, add 4kg of water and mix evenly to obtain a water dispersant, use the above water dispersant to spray insecticide, and record the insecticide effect:

[0095] 1. The insecticidal effect on aphids, the results are shown in Table 1:

[0096] Table 1

[0097]

[0098] 2. The control effect on Spodoptera litura is shown in Table 2.

[0099] Table 2

[0100]

[0101]

[0102] 3. The control effect on scale insects. The results are shown in Table 3.

[0103] Table 3

[0104]

[0105] 4. The control effect on rose sawfly. The results are shown in Table 4.

[0106] Table 4

[0107]

[0108]

[0109] Test 2: Safety test

[0110] The garden green land special insect pest control agent prepared in Example 1 was subjected to a safety test of acute toxicity in rats to evaluate the safety of the sample of the present invention.

[0111] SD rats were used as experimental animals. Experimental procedures: 30 male and female rats, a total of 60 rats were randomly divided into 3 groups, 20 rats in each group. After the animals were fasted overnight, the drug solution was prepared according to the high, medium and low (0.5, 2.5, 5g / kg) dose groups of rat weight for gavage. After 1 hour, the poisoning symptoms of the rats were observed and recorded, and the status of the poisoned mice was continuously observed, and the death was recorded. The results are shown in Table 5.

[0112] Table 5

[0113] dose Number of animals Number of poisonings (pcs) Poisoning rate (%) Number of deaths (individuals) mortality rate(%) 0.5g / kg 20 0 0 0 0 2.5g / kg 20 0 0 0 0 5g / kg 20 3 15 1 5

[0114] After intragastric administration, the number of mice that survived, survived, and died was recorded. Figure 1 .

[0115] The test results show that after oral administration to rats, the low-dose group and the medium-dose group did not show obvious poisoning symptoms; individual rats in the high-dose group gradually began to show poisoning symptoms after 1 hour, such as malaise, decreased appetite, and weight loss, but gradually returned to normal after 1-2 weeks. Individual poisoned rats in the high-dose group died after oral administration. The experimental results show that the product of the present invention is non-toxic to humans and animals and is safe to use.

[0116] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A special insect pest control agent for gardens and green spaces, characterized in that: The invention comprises the following raw materials in parts by weight: 3-5 parts of cypress leaves, 0.5-2 parts of oleander, 8-12 parts of pomegranate peels, 8-12 parts of sophora flavescens, 2-5 parts of tripterygium wilfordii, 1-2 parts of pyrethrum, 3-10 parts of tobacco, 2-3 parts of cinnamon, and 0.5-2 parts of a surfactant.

2. The garden green land special insect pest control agent according to claim 1, characterized in that: The invention comprises the following raw materials in parts by weight: 5 parts of juniper leaves, 1.5 parts of oleander, 10 parts of pomegranate peels, 9 parts of sophora flavescens, 3 parts of tripterygium wilfordii, 2 parts of pyrethrum, 10 parts of tobacco, 2 parts of cinnamon, and 1.2 parts of surfactant.

3. The garden green land special insect pest control agent according to claim 1, characterized in that: The surfactant is an organosilicon surfactant.

4. The garden green land special insect pest control agent according to claim 3, characterized in that: The organosilicon surfactant is ethoxy-modified polytrisiloxane.

5. The method for preparing the special insect pest control agent for gardens and green spaces according to any one of claims 1 to 4, characterized in that: The following steps are involved: (1) Weigh plant raw materials including cypress leaves, oleander, pomegranate peel, sophora flavescens, tripterygium wilfordii, pyrethrum, tobacco, and cinnamon according to proportion and wash them; (2) mixing the washed plant material with water, beating the mixture, boiling and filtering the mixture to obtain a residue A and a filtrate A; (3) adding water to the filter residue A, boiling and filtering again to obtain filter residue B and filtrate B; (4) adding ethanol to the filter residue B, extracting and filtering to obtain filter residue C and filtrate C; (5) washing the filter residue C 3 to 4 times to obtain a washing liquid; (6) mixing and concentrating the filtrate A, the filtrate B, the filtrate C and the washing liquid to obtain a plant extract; (7) The plant extract is mixed with a surfactant to obtain the special insect pest control agent for gardens and green spaces.

6. The method for preparing the special insect pest control agent for gardens and green spaces according to claim 5, characterized in that: In step (2), the mass ratio of the plant material to water is 1:3-4; and the boiling time is 0.5-1h.

7. The method for preparing the special insect pest control agent for gardens and green spaces according to claim 5, characterized in that: In step (3), the mass ratio of the filter residue A to water is 1:2-3; and the boiling time is 0.5-1h.

8. The method for preparing the special insect pest control agent for gardens and green spaces according to claim 5, characterized in that: In step (4), the mass ratio of the filter residue B to ethanol is 1:2-4; and the extraction time is 1-3 hours.

9. The method for preparing the special insect pest control agent for gardens and green spaces according to claim 5, characterized in that: The washing detergent in step (5) is water or ethanol; the mass ratio of the filter residue C to the washing detergent is 1:2-3.

10. The method for preparing the special insect pest control agent for gardens and green spaces according to claim 5, characterized in that: The liquid content in the concentrated plant extract in step (6) is 30-60wt%.

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