CN114097791A - Scouring-resistant powder with attracting, preventing and controlling effects on pine wood nematode disease and vector insects thereof - Google Patents
Scouring-resistant powder with attracting, preventing and controlling effects on pine wood nematode disease and vector insects thereof Download PDFInfo
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- CN114097791A CN114097791A CN202010876914.XA CN202010876914A CN114097791A CN 114097791 A CN114097791 A CN 114097791A CN 202010876914 A CN202010876914 A CN 202010876914A CN 114097791 A CN114097791 A CN 114097791A
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- powder
- pine
- scouring
- fluopyram
- imidacloprid
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- 239000000843 powder Substances 0.000 title claims abstract description 97
- 201000010099 disease Diseases 0.000 title claims abstract description 44
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 title claims abstract description 44
- 241000243771 Bursaphelenchus xylophilus Species 0.000 title claims abstract description 31
- 238000009991 scouring Methods 0.000 title claims abstract description 15
- 241000238631 Hexapoda Species 0.000 title claims abstract description 10
- 230000001276 controlling effect Effects 0.000 title claims abstract description 10
- 230000003405 preventing effect Effects 0.000 title description 13
- 239000005906 Imidacloprid Substances 0.000 claims abstract description 23
- 229940056881 imidacloprid Drugs 0.000 claims abstract description 23
- 239000005783 Fluopyram Substances 0.000 claims abstract description 22
- KVDJTXBXMWJJEF-UHFFFAOYSA-N fluopyram Chemical compound ClC1=CC(C(F)(F)F)=CN=C1CCNC(=O)C1=CC=CC=C1C(F)(F)F KVDJTXBXMWJJEF-UHFFFAOYSA-N 0.000 claims abstract description 22
- YWTYJOPNNQFBPC-UHFFFAOYSA-N imidacloprid Chemical compound [O-][N+](=O)\N=C1/NCCN1CC1=CC=C(Cl)N=C1 YWTYJOPNNQFBPC-UHFFFAOYSA-N 0.000 claims abstract description 22
- KLMGMPDXSPSCOC-UHFFFAOYSA-N 2-undecoxyethanol Chemical compound CCCCCCCCCCCOCCO KLMGMPDXSPSCOC-UHFFFAOYSA-N 0.000 claims abstract description 16
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- CJZGTCYPCWQAJB-UHFFFAOYSA-L calcium stearate Chemical compound [Ca+2].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O CJZGTCYPCWQAJB-UHFFFAOYSA-L 0.000 claims description 3
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- UMKARVFXJJITLN-UHFFFAOYSA-N lead;phosphorous acid Chemical compound [Pb].OP(O)O UMKARVFXJJITLN-UHFFFAOYSA-N 0.000 claims description 2
- SJOCPYUKFOTDAN-ZSOIEALJSA-N methyl (4z)-4-hydroxyimino-6,6-dimethyl-3-methylsulfanyl-5,7-dihydro-2-benzothiophene-1-carboxylate Chemical compound C1C(C)(C)C\C(=N\O)C=2C1=C(C(=O)OC)SC=2SC SJOCPYUKFOTDAN-ZSOIEALJSA-N 0.000 claims description 2
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- 244000215068 Acacia senegal Species 0.000 claims 1
- 229920000084 Gum arabic Polymers 0.000 claims 1
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- 230000003628 erosive effect Effects 0.000 claims 1
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- 239000000454 talc Substances 0.000 claims 1
- 229910052623 talc Inorganic materials 0.000 claims 1
- 235000012222 talc Nutrition 0.000 claims 1
- 235000008331 Pinus X rigitaeda Nutrition 0.000 abstract description 40
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- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
- A01N43/34—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom
- A01N43/40—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds having rings with one nitrogen atom as the only ring hetero atom six-membered rings
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N25/00—Biocides, pest repellants or attractants, or plant growth regulators, characterised by their forms, or by their non-active ingredients or by their methods of application, e.g. seed treatment or sequential application; Substances for reducing the noxious effect of the active ingredients to organisms other than pests
- A01N25/12—Powders or granules
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N51/00—Biocides, pest repellants or attractants, or plant growth regulators containing organic compounds having the sequences of atoms O—N—S, X—O—S, N—N—S, O—N—N or O-halogen, regardless of the number of bonds each atom has and with no atom of these sequences forming part of a heterocyclic ring
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- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Environmental Sciences (AREA)
- Wood Science & Technology (AREA)
- Plant Pathology (AREA)
- Engineering & Computer Science (AREA)
- Dentistry (AREA)
- Pest Control & Pesticides (AREA)
- Zoology (AREA)
- Agronomy & Crop Science (AREA)
- Toxicology (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention discloses a scouring-resistant powder with attracting and controlling effects on pine wood nematode disease and vector insects thereof, which comprises the following components in percentage by mass: 0.1-30% of fluopyram, 0.1-30% of imidacloprid, 0.1-1% of ethylene glycol monoundecyl ether, 1-8% of adhesive, 1-7% of stabilizer and 45-95% of filler. The three effective components of the fluopyram, the imidacloprid and the ethylene glycol monoundecyl ether are mixed with the adhesive, the stabilizing agent and part of the filler carrier by coarse crushing and superfine grinding and then are fully mixed with the rest carrier to prepare the fluopyram-imidacloprid powder. The powder of the invention can control the pine wilt disease by controlling the transmission medium and transmission source of the pine wilt disease. The presence of the adhesive can make the medicament adsorbed on the pine needles and resist scouring. The powder is sprayed, the use method is simple, the prevention and treatment effect is obvious, and the lasting period is long.
Description
Technical Field
The invention belongs to the field of chemical prevention and control of forestry diseases and insect pests, and particularly relates to scouring-resistant powder with attracting, preventing and controlling effects on pine wood nematode diseases and vector insects thereof.
Background
The pine wood nematode disease is caused by pine wood nematode (pine wood nematode)Bursaphelenchus xylophilus) The pine wilt caused by the pine wilt disease can be died in a short time after the pine is infected with pine nematode disease, and the pine wilt disease has extremely strong spreading property, once the pine wilt disease occurs, the yield of pine forest can be reduced in a large area, great economic loss of forestry is caused, and the pine wilt disease is a destructive epidemic disease. The transmission of the pine wilt disease is mainly transmitted among plants by means of forest activities of a midhost monochamus alternatus besides artificial long-distance transportation of epidemic trees. In recent years, quarantine and control of trans-regional pine wood transportation by forestry law enforcement departments in various places are increasingly strict, so that the control of monochamus alternatus hope and pine wood nematodes becomes a main battlefield for preventing and controlling pine wood nematode diseases. The pine wood nematode parasitizes in pine resin canal of pine trees and blocks nutrition and moisture conduction of the pine trees, and the pesticide which is commonly used in agriculture and is effective to the soil nematode is difficult to act on the pine wood nematode. Adult monochamus alternatus feeding and breeding in forests, the larvae are pine trunk borers, the pine forest is dense in vegetation, the traditional pesticide formulation and the pesticide application mode are difficult to act on the adults and the larvae in the trunks in the forests, the control effect on the monochamus alternatus is not ideal, and in addition, the problems of rain wash and the like are solved, the duration is short, and the environment is adversely affected.
The prevention and control method of the pine wood nematode disease mainly comprises physical prevention and control, chemical prevention and control, biological prevention and control, forest control and trap control and the like, wherein the chemical prevention and control is used as a traditional prevention and control mode, the labor and material cost is low, the effect is fast, the action range is wide, and along with the continuous appearance of novel medicaments, environment-friendly short versions of the novel medicaments gradually appear, and the novel prevention and control method plays an important role in the overall prevention and control of the pine wood nematode disease. The existing main pesticide formulations comprise powder, granules, wettable powder, soluble powder, water dispersible granules, suspending agents, missible oil, aqueous emulsion, soluble liquid, microcapsules and the like, the physical and chemical properties and the storage and transportation modes of the formulations are different, and different formulations can be selected according to different application requirements and conditions. In forestry, the operating conditions are more complicated compared with agriculture, the requirements on medicaments, application modes and equipment are different, stronger adsorbability and dispersion are needed, and traffic and water taking are difficult in a forest environment, so that the common spray formulation is difficult to apply. The powder is a traditional pesticide formulation and is prepared by simply mixing solid raw pesticide, a carrier and a stabilizer. When the powder is used, the powder is sprayed in a forest by a powder sprayer, is easy to fly and can be well attached to the surface of a plant, so that the powder is more suitable for large-area application in forestry compared with missible oil, granules and a suspending agent.
In practical application, particularly in woodland application, the influence of weather is serious, and under the condition of rain wash, the action effect of the powder is limited to a great extent, so that the expected effect is difficult to achieve. The adsorption effect plays an important role in the effect exertion of the powder, and the powder can be adsorbed on leaves and branches of a forest in rainy days for a longer time, so that the drug effect is fully exerted. The invention adopts the sodium cellulose, xanthan gum and other adhesives, and the powder has the characteristics of scouring resistance and long lasting period in proper proportion.
The monochamus alternatus is the main propagation medium of the pine wood nematodes, and when adult worms of the monochamus alternatus eclosion and fly out, the monochamus alternatus can carry a large amount of pine wood nematodes and propagate the pine wood nematodes to a new plant when the new plant is eaten, so that the pine wood nematodes are rapidly diffused. At present, the monochamus alternatus trapper widely used nationwide greatly reduces the population density of monochamus alternatus and has obvious effect of preventing and treating pine wilt disease. However, since monochamus alternatus responds to attractant stimuli only for a short specific period after adult eclosion, many monochamus alternatus have already spread to pine wood nematodes before they are trapped by the trap. The chemical prevention and control are not limited by the physiological stage of Monochamus alternatus, the death speed is high, and the prevention and control efficiency is high. Imidacloprid is a nitromethylene heterocyclic compound which can form antagonism with acetylcholine receptor, thus achieving poisoning effect by influencing the function of nervous system of insects. The imidacloprid is used as a high-efficiency systemic insecticide with broad spectrum, low toxicity, long residual effect period, environmental protection, no cross resistance, strong contact killing capability, quick response and wide application in agriculture.
Pine wood nematodes parasitize inside the body of pine trees, and in order to act on pine wood nematodes, it is required that the agent must be absorbed by pine trees, i.e., have systemic properties. Fluopyram is a novel excellent nematicide appearing in recent years, is also a broad-spectrum bactericide, has the function of killing nematodes by inhibiting the activity of succinate dehydrogenase and interfering the respiration of the nematodes, and is a novel action mechanism. At present, fluopyram as an efficient nematicide and prophylactic agent is widely applied in agriculture, and has obvious effect in nematode control of vegetables and fruits such as tomatoes, bananas and the like.
At present, most of common agents for preventing and treating the pine wood nematode disease have drug effect only on one of the pine wood nematode disease or monochamus alternatus disease, and the common agents are fresh and effective on the pine wood nematode disease and the monochamus alternatus disease simultaneously.
Disclosure of Invention
The invention aims to provide a powder which has contact toxicity to Monochamus alternatus while preventing the pine wilt disease. The powder has an attraction effect on monochamus alternatus hope, and is sprayed in forests to kill a wide range of bursaphelenchus xylophilus disease transmission media by attracting a large amount of monochamus alternatus hope. Before the pine wilt disease occurs, the pine forest is sprayed to kill the nematode in pine body, block the transmission path of monochamus alternatus to make healthy plant possess resistance and eliminate infection source.
In order to achieve the purpose, the invention adopts the following technical scheme:
the scouring-resistant powder with attracting, preventing and controlling effects on the pine wilt disease and vector insects thereof comprises the following components in percentage by mass: 0.1-30% of fluopyram, 0.1-30% of imidacloprid, 0.1-1% of ethylene glycol monoundecyl ether, 1-8% of adhesive, 1-7% of stabilizer and 45-95% of filler, wherein the sum of the components is 100%.
The stabilizer comprises one or more of calcium-zinc composite stabilizer, dibasic lead stearate, dibasic lead phosphite, calcium stearate and calcium stearate.
The adhesive comprises one or more of Arabic gum, reducing gum and sodium cellulose.
The filler comprises one or more of bentonite, montmorillonite, talcum powder, kaolin, corn starch, diatomite, attapulgite, white carbon black and sepiolite, and is preferably bentonite and montmorillonite.
The components in the proportion are preferably as follows: 1% fluopyram; 2% imidacloprid; 1% ethylene glycol monoundecyl ether; 2% of a stabilizer; 1% of a binder; 93% of filler.
A preparation method of scouring-resistant powder with attracting and controlling effects on bursaphelenchus xylophilus and vector insects thereof comprises the following steps:
(1) coarsely crushing and mixing fluopyram, imidacloprid, ethylene glycol monoundecyl ether, a stabilizer and part of filler to form a coarse mixture;
(2) carrying out superfine grinding on the coarse mixture until the particle size is about 10 mu m to form effective powder;
(3) grinding the rest filler into particles with the particle size of about 10 mu m;
(4) mixing the adhesive with the rest of the filler to form uneven powder;
(5) and (4) fully mixing the effective powder and the powder obtained in the step (4) to form the finished product of the scouring-resistant powder.
The scouring-resistant powder is used for simultaneously preventing and treating monochamus alternatus and pine wood nematode diseases, and the method comprises the following steps:
(1) before the pine wilt disease occurs, the powder is sprayed in agricultural mode to prevent and spray the powder on the pine canopy, and the reference dosage per mu is 500 g. Can kill pine wood nematode which is not erupted in pine trees, and kill Monochamus alternatus which is a transmission medium.
(2) Before the pine wilt disease occurs, the powder is sprayed under the forest by using a backpack type medical instrument to irrigate roots, and the reference dosage per mu is 500 g. Can kill pine wood nematode which is not erupted in pine trees, and kill Monochamus alternatus which is a transmission medium.
(3) After the pine wood nematode disease is developed, the powder is sprayed in a forest by using a backpack type medical instrument, and the reference dosage per mu is 500 g. Killing monochamus alternatus in forests and blocking the channel for the pine wood nematodes to continuously spread. The diluent can also be used for treating dead wood, killing pine wood nematodes in epidemic trees and reducing infection sources.
Compared with the prior art, the invention has the following advantages:
(1) the powder can kill the pine wood nematodes hidden in an infection source before the pine wood nematodes are attacked, and has the attraction capability and the insecticidal toxicity on the pine wood nematode propagation medium monochamus alternatus. The novel efficient nematicide fluopyram adopted by the medicament can influence the metabolism of succinate dehydrogenase in the pine wood nematode, thereby inhibiting the respiration of the pine wood nematode and achieving the purpose of nematocidal, is a novel nematocidal mechanism and has low toxicity to users and environment. Meanwhile, imidacloprid, another active ingredient of the pesticide, is a systemic pesticide widely applied in agriculture, has broad-spectrum insecticidal property, can influence the nervous system function of target pests, thereby quickly killing the pests, having high efficiency and low toxicity, being difficult to generate resistance and having good insecticidal activity on coleoptera insects such as Monochamus alternatus and the like. The main characteristic of the invention is that the powder is prepared by combining fluopyram and imidacloprid.
(2) On the basis of simultaneously preventing and controlling monochamus alternatus and pine wood nematodes, the addition of the auxiliary agent ethylene glycol mono-undecyl ether improves the insecticidal capacity of the mixed drug and enlarges the prevention and control effect on the pine wood nematode disease to a great extent.
(3) The small amount of the binder makes the invention have higher adsorbability compared with the prior common powder. Unlike common powder which is washed away when meeting rain, the invention can be strongly adsorbed on a control object when meeting water, so that the lasting period is prolonged; compared with the prior art under the same application dosage, the prevention and treatment effect is more remarkable.
(4) In forestry, the operating conditions are more complicated compared with agriculture, the requirements on medicaments, application modes and equipment are different, stronger adsorbability and dispersion are needed, and traffic and water taking are difficult in a forest environment, so that the common spray formulation is difficult to apply. The powder is a traditional pesticide formulation and is prepared by simply mixing solid raw pesticide, a carrier and a stabilizer. When the powder is used, the powder is sprayed in a forest by a powder sprayer, is easy to fly and can be well attached to the surface of a plant, so that the powder is more suitable for large-area application in forestry compared with missible oil, granules and a suspending agent.
(5) The invention adopts powder, is convenient to use, is used in forestry, is easy to fly and disperse to each corner of a forest compared with suspending agents, missible oil and other dosage forms, has the scouring-resistant characteristic and is more beneficial to the exertion of the function of the powder and the reduction of the operation cost.
Detailed Description
Example 1: prevention of pine wood nematode disease of field pinus massoniana seedlings by powder
The formula is as follows: 1% of fluopyram, 2% of imidacloprid, 1% of ethylene glycol monoundecyl ether, 2% of calcium-zinc composite stabilizer, 93% of montmorillonite and 1% of reducing gum.
The preparation method comprises the following steps:
(1) coarsely crushing and mixing fluopyram, imidacloprid, ethylene glycol monoundecyl ether, a stabilizing agent and part of montmorillonite to form a coarse mixture;
(2) carrying out superfine grinding on the coarse mixture until the particle size is about 10 mu m to form effective powder;
(3) grinding the rest montmorillonite into particles of about 10 μm;
(4) mixing and dissolving the reducing gel and the rest montmorillonite to form uneven powder;
(5) and (4) fully mixing the effective powder and the powder obtained in the step (4) to form the finished product of the compound powder.
The experimental method comprises the following steps: 20 three-year-old pinus massoniana seedlings which are good in growth vigor, high in plant height, close in base diameter and other indexes are divided into two groups, one group is used as an experimental group, 5g of the powder is sprayed, the other group is used as a control group, and the same amount of montmorillonite powder is sprayed. After one week, two groups of seedlings were inoculated with nematodes, 3000 pine wood nematodes were inoculated per plant, and the disease was continuously observed and recorded as follows:
table 1: pine wood nematode disease prevention of powder field pinus massoniana seedlings
Note: degree of onset: no disease, green plants; + first stage, color change of partial needle leaves; + two stages; most of the needles discolor; and the color of the whole plant is changed to wither and death by + and + three stages.
As can be seen from the above, the powder of the present invention has a good effect of preventing pine wilt disease.
Example 2: prevention and control of powder to monochamus alternatus hope in forest
The formula is as follows:
1% of fluopyram, 2% of imidacloprid, 1% of ethylene glycol monoundecyl ether, 2% of calcium-zinc composite stabilizer, 93% of montmorillonite and 1% of reducing gum.
The preparation method comprises the following steps:
(1) 1% of fluopyram, 2% of imidacloprid, 1% of ethylene glycol monoundecyl ether, calcium-zinc composite stabilizer and part of montmorillonite are coarsely crushed and mixed to form a coarse mixture;
(2) carrying out superfine grinding on the coarse mixture until the particle size is about 10 mu m to form effective powder;
(3) grinding the rest montmorillonite into particles of about 10 μm;
(4) mixing and dissolving the reducing gel and the rest montmorillonite to form uneven powder;
(5) and (4) fully mixing the effective powder and the powder obtained in the step (4) to form the finished product of the compound powder.
The experimental method comprises the following steps:
in the woodland of the bursaphelenchus xylophilus disease affected area, 60 mu of sample land is selected, 3 traps are hung, the sample land is repeated for 3 times, the pesticide application time is 1-3 days in 7 months, the number of monochamus alternatus in the traps in the 6 months of the year is counted before the pesticide is applied by the powder, the number of monochamus alternatus in the 6 months of the sample land in the second year after pesticide application is counted, and the woodland of the affected area with the same area except 100 meters of each pesticide application sample land is used as a control, and 3 sample lands are used.
The statistical time of the trapper monochamus alternatus is 6 months to a whole month, the trapper monochamus alternatus is hung on the mountain top, forest edge, open area in the forest or branches of the lower layer of pine trees, the lower end of the trapper needs to be more than l.5 m away from the ground, and the trapper monochamus alternatus is hung under the conditionThe higher the better, the more triangular or grid-shaped arrangement is in the forest. When the edge of the forest stand is hung, the edge is hung in the small class, and the distance between the edge and the small class is more than 150 m in principle. Trap is rated at 2 hm2The left and right sides are hung at a density of 1 piece, and the distance is 100-150 m. During hanging, the trap is managed by a specially-assigned person, artificial and extreme weather damage is prevented, meanwhile, the trapping quantity is counted periodically, the trapping core or the attractant is replaced (added), and dry branches and fallen leaves in the trap are cleaned.
TABLE 2. number of Monochamus alternatus Hope in-plot traps
From the table 2, the reduction rate of the Monochamus alternatus population in the application region can be calculated to be 71.05 percent, while the number of the Monochamus alternatus populations which are not applied is slightly increased, and the powder has an obvious control effect on the Monochamus alternatus population.
Example 3: prevention and treatment of woodland pine nematode disease by powder
The formula is as follows:
powder preparation: 1% of fluopyram, 2% of imidacloprid, 1% of ethylene glycol monoundecyl ether, 2% of calcium-zinc composite stabilizer, 93% of montmorillonite and 1% of reducing gum.
The preparation method comprises the following steps:
(1) 1% of fluopyram, 2% of imidacloprid, 1% of ethylene glycol monoundecyl ether, calcium-zinc composite stabilizer and part of montmorillonite are coarsely crushed and mixed to form a coarse mixture;
(2) carrying out superfine grinding on the coarse mixture until the particle size is about 10 mu m to form effective powder;
(3) grinding the rest montmorillonite into particles of about 10 μm;
(4) mixing and dissolving the reducing gel and the rest montmorillonite to form uneven powder;
(5) and (4) fully mixing the effective powder and the powder obtained in the step (4) to form the finished product of the compound powder.
The experimental method comprises the following steps:
taking 30 mu of land for each masson pine experiment in the forest land of the pine wilt disease epidemic area within 5 months and 20 days to 22 days, wherein the masson pine is all plantedThe diameter at breast height is about 15cm, the height is about 12m, and the degree of closure is about 0.7-0.8. The prepared powder is used at a rate of 500g/hm2The standard of (2) is that a duster is used for spraying in a masson pine forest, and the test is repeated for three times, and the area is totally 90 mu. The forest land without pesticide application is used as a control, the test method is the same, three plots are used, and the total area is 90 mu. And counting the death condition of the newly added masson pine after 6 months.
TABLE 3 dust control Condition
After the same column of data, different lower case letters indicated significant differences (p < 0.05) and different upper case letters indicated significant differences (p < 0.01).
According to the statistics of the number of newly added dead wood in the table 3, the number of pinus massoniana in the three application areas is 268, 256 and 348 respectively, the statistics of newly added dead wood after the application of the medicine is carried out in the test area, and the average growth rate of the dead wood is 1.02%; the number of pinus massoniana in the forest of the untreated control forest stand is 240, 187 and 315 respectively, and the average growth rate of the died epidemic trees is 4.40%. Under the comparison of the number of monochamus alternatus in a forest and the number of dead trees, the powder has an obvious effect of preventing and treating the pine wilt disease, and the prevention and treatment efficiency is 76.82%.
Example 4: influence of different powder additives on prevention and control effect of woodland pine nematode
The formula is as follows:
powder 1: 1% of fluopyram, 2% of imidacloprid, 1% of ethylene glycol monoundecyl ether, 2% of calcium-zinc composite stabilizer, 93% of montmorillonite and 1% of reducing gum.
Powder 2 contained no binder: 1% of fluopyram, 2% of imidacloprid, 1% of ethylene glycol monoundecyl ether, 2% of calcium-zinc composite stabilizer and 94% of montmorillonite.
Powder 3 contains no attractant: 1% of fluopyram, 2% of imidacloprid, 2% of calcium-zinc composite stabilizer, 94% of montmorillonite and 1% of reducing gel.
Powder 4 contains no binders and attractants: 1% of fluopyram, 2% of imidacloprid, 2% of calcium-zinc composite stabilizer and 95% of montmorillonite.
The preparation method comprises the following steps:
(1) 1% of fluopyram, 2% of imidacloprid, 1% of ethylene glycol monoundecyl ether, calcium-zinc composite stabilizer and part of montmorillonite are coarsely crushed and mixed to form a coarse mixture;
(2) carrying out superfine grinding on the coarse mixture until the particle size is about 10 mu m to form effective powder;
(3) grinding the rest montmorillonite into particles of about 10 μm;
(4) mixing and dissolving the reducing gel and the rest montmorillonite to form uneven powder;
(5) and (4) fully mixing the effective powder and the powder obtained in the step (4) to form the finished product of the compound powder.
The experimental method comprises the following steps:
taking 30 mu of land for each masson pine forest experiment in the forest land of the pine wilt disease epidemic area within 5-10 days after 6 months, wherein the average diameter at breast height of the masson pine is about 15cm, the height of the masson pine is about 12m, and the degree of closure is about 0.7-0.8. The prepared powder is used at a rate of 500g/hm2The standard of (2) is that a duster is used for spraying in a masson pine forest, and the test is repeated for three times, and the area is totally 90 mu. In addition, the same effective component medicaments without the adhesive, the attractant and the adhesive and the attractant are respectively tested, and the method is the same as that of the powder of the invention. The forest land without pesticide application is used as a control, the test method is the same, three plots are used, and the total area is 90 mu. And counting the death condition of the newly added masson pine after 6 months.
Control effect (%) = [ (number of dead plants in blank control area-number of dead plants in treatment area)/number of dead plants in blank control area ]. times.100%
TABLE 4 control of different powders
After the same column of data, different lower case letters indicated significant differences (p < 0.05) and different upper case letters indicated significant differences (p < 0.01).
According to the statistics of the number of newly added dead wood in table 4, 12 newly added dead wood, 19 newly added dead wood in the test area without adhesive powder, 17 newly added dead wood in the test area without attractant powder, 26 newly added dead wood in the test area without adhesive and attractant powder and 53 newly added dead wood in the control area are found in the powder application area of the invention, and compared with the powder test area without adhesive and attractant, the number of dead wood in the powder application area of the invention is obviously reduced. The control effect of the pine wilt disease in the powder application area of the invention can be calculated to be 77.36%, which is the most obvious compared with the control effect of the powder with the same effective components without adding adhesive and attractant, and shows that the added adhesive and attractant have synergistic effect on the application of fluopyram and imidacloprid.
Under the comparison of the number of monochamus alternatus hopes and the number of dead and dead trees in the forest, the powder has obvious effect of preventing and treating the pine wilt disease.
The present invention is described in detail with reference to the above embodiments. It should be noted that the above embodiments are only for illustrating the present invention. Numerous alternatives and modifications can be devised by those skilled in the art without departing from the spirit and scope of the invention, which should be construed as within the scope of the invention.
Claims (5)
1. The scouring-resistant powder with attracting and controlling effects on pine wood nematode disease and vector insects thereof is characterized by comprising the following components in percentage by mass: 0.1-30% of fluopyram, 0.1-30% of imidacloprid, 0.1-1% of ethylene glycol monoundecyl ether, 1-8% of adhesive, 1-7% of stabilizer and 45-95% of filler, wherein the sum of the components is 100%.
2. The erosion resistant powder of claim 1 wherein the binder is one or more of starch, xanthan gum, sodium microcrystalline cellulose, gum arabic.
3. The scouring-resistant powder of claim 1, wherein the stabilizer is one or more of a calcium zinc composite stabilizer, dibasic lead stearate, dibasic lead phosphite and calcium stearate.
4. The scouring-resistant powder of claim 1, wherein the filler is one or more of bentonite, montmorillonite, talc, kaolin, corn starch, diatomaceous earth, attapulgite, white carbon black, and sepiolite.
5. Use of the scouring resistant powder of claim 1 for the simultaneous control of bursaphelenchus xylophilus and its vector insects.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114617013A (en) * | 2022-03-25 | 2022-06-14 | 安榆林 | Method for preventing and controlling pine wilt disease |
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