79 results about "Phylloxera" patented technology

The invention discloses a binary composite insecticidal compound, which is characterized in that the binary composite insecticidal compound comprises active components A and B, wherein, the active component A is pymetrozine, the active component B is one of acephate, Imidaclothiz, Dinotefuran and Diafenthiuron, and the weight ratio of the two active components is 1-90:90-1. The compound in the invention can be widely applied to crops, such as grain crop, rice, corn, cotton, vegetable, fruit trees and the like, has an active effect in preventing and curing sucking mouthparts pests which are harmful for growth of crops in hemiptera, Thysanoptera, Homoptera, dipteron and the like, such as plant hopper, thrips, cicada, leafhopper, aleyrodid, phylloxera, aphid, scale insect, Sitodiplosis mosellana Gehin, pachydiplosis oryzae wood-mason and the like. The compound of the invention has obvious synergy and is different from other insecticides.

The invention belongs to the field of disease and insect pest control of agriculture and particularly relates to a method for preparing a pesticide for preventing and treating citrusyellowshoot. According to the method, firstly, citrus tender shoots and the like are subjected to extraction by using the habit of phylloxera, orange peels and herba menthae are added during extraction to attract the phylloxera, a lure solution contains Chinaberry seeds, the phylloxera are killed by the Chinaberry seeds after the phylloxera are lured, and the phylloxera are adhered by using stickiness of a mixed solution; the lure solution contains rich nutrients which can be absorbed and utilized by citrus; then, substances such as eggplant leaves are subjected to extraction, and substances in an extract are compounded with essential oil, so that the extract is diffused to attract natural enemies of the phylloxera, and the phylloxera are killed and prevented and treated; and the added essential oil plays arole in driving the phylloxera. According to the method, the problem in the current killing of citrus phylloxera by using chemical pesticides that the pesticide effect time is short, the generation of pesticide resistance of the citrus phylloxera to a large number of pesticides is easily caused, and the pesticidal effect is obviously lowered is avoided, and the method is safe and is free of harm.

The invention relates to an insect-killing composition suitable for drip irrigation to prevent and control diaphorina citri. The effective components of the insect-killing composition are binary compounding of sulfoxaflor and cyantraniliprole. According to indoor bioassay, the optimal synergic ratio of the insect-killing composition to diaphorina citri is 5:3. The insect-killing composition has the advantages that the insect-killing composition has an obvious synergistic effect; an insecticidal spectrum is expanded, and the pesticide resistance of pests is lowered; the pesticide dose is reduced; pesticide residues are lowered; meanwhile, the pesticide cost and labor force cost are saved. By means of the insect-killing composition suitable for drip irrigation to prevent and control diaphorina citri, the problems that agent is not uniformly sprayed when the agent is applied by being sprayed, phylloxera cannot be prevented and controlled at a hidden place, and the pesticide applying timeand the pesticide applying frequency cannot be controlled can be solved. With the assistance of an existing drip irrigation system, the composition is directionally applied to root areas of crops, through root systems, the composition is absorbed and transferred to tender parts of citrus leaves, and diaphorina citri can be directionally prevented and controlled.

The invention discloses a microcapsule suspending agent preapred from carbosulfan, chlorpyrifos and abamectin by compounding, and a preparation method thereof. The microcapsule suspending agent mainly comprises 5-20% of carbosulfan, 5-20% of chlorpyrifos, 0.1-5% of abamectin, 5-15% of solvent, 2-25% of capsule wall materials, 3-8% of emulsifier, 0.1-0.4% of thickener, 3-5% of antifreezing agent, 0.01-0.5% of corrosion remover, 0.1-1% of defoamer and the balance of water. By adopting the preparation, the effective components are coated with a capsule wall to form a microcapsule of an environment-friendly and low-public hazard slow-release pesticide suspending in water by adopting an interfacial polymerization method and a coating method. The compound preparation has a broad insecticidal spectrum, has good prevention and treatment effects on soil insects such as stem borers, grubs, cutworms, root-knot nematodes, bradysia odoriphaga and the like, and over-ground insects such as phylloxera, plutella xylostella and the like on crops such as corns, peanuts, vegetables, fruit trees and the like, and is long in lasting period, and the service efficiency of the effective components of the pesticide is improved.

The invention relates to a pesticide composition with spirotetramat and dinotefuran. The effective components of the pesticide composition are the spirotetramat and the dinotefuran. The mass ratio of the spirotetramat to the dinotefuran is (1-40):(40-1); and the total mass of the effective components, namely the spirotetramat and the dinotefuran, in the preparation accounts for 1-80 percent of the mass of the whole preparation, and the rests are auxiliary components which are allowed to be used and are accepted in pesticides. The pesticide composition can be missible oil, a suspending agent, wettable powder, a water scattering agent, water emulsion, microemulsion, granula and micro capsules, can effectively prevent and treat insects such as aphids, leafhopper, plant hopper, thrips, aleyrodid, phylloxera, mealybug and scale insect and is mainly used for treating and preventing insects on various crops such as wheat, rice, cotton, vegetables, fruit trees, tobaccos, soy beans, oranges, tropical fruit trees, nuts, grapes, hops and potatoes.

The invention provides a tung bran biotransformation microbial agent for preventing and treating citrus huanglongbing and a preparation method thereof. The tung bran biotransformation microbial agentfor preventing and treating the citrus huanglongbing comprises the following steps: taking loose soils; drying and screening the loose soils; adding a domesticated culture medium solution containing tung bran and honey to the loose soils; successively shaking a bottle and performing standing for culturing; removing a liquid part; adding a domesticated culture medium solution to the loose soils torepeatedly culture the loose soils; adding a precipitate part to an LB culture medium; uniformly shaking the precipitate part and the LB culture medium; diluting, coating, separating and culturing theprecipitate part and the LB culture medium to obtain bacillus subtilis, bacillus amyloliquefaciens, bacillus pumilus and bacillus licheniformis; mixing the bacillus subtilis, the bacillus amyloliquefaciens, the bacillus pumilus and the bacillus licheniformis to obtain a microbial strain; grafting the microbial strain to tung bran fermentation liquor containing tung bran and honey; carrying out oxygen limited fermentation on a grafted product; and filtering the fermented product to obtain the tung bran biotransformation microbial agent for preventing and treating the citrus huanglongbing. Thetung bran biotransformation microbial agent for preventing and treating the citrus huanglongbing, provided by the invention, has the advantages that the tung bran biotransformation microbial agent isprepared by using tung bran growth-promoting bacteria to ferment tung bran raw materials; and multiple effects of killing phylloxera, killing pathogenic bacteria, inducing plant wide-spectrum diseaseresistance and promoting plant inorganic nutrition and leaf photosynthesis are realized.

The invention discloses a spirotetramat containing pesticide composition, which is a pesticide composition containing an active component A and an active component B, wherein the active component A is spirotetramat, the active component B is any one of the following pesticides: chlorpyrifos, MTMC (meta-tolyl-N-meth ylcarbamate) and isoprocarb, and the weight ratio of the two active components is 60:1-1:80. The composition disclosed by the invention can control various insect pests, has an obvious synergistic effect, expands the insecticidal spectrum, and has high activities to aphids, thrips, phylloxera, mealybug, aleyrodid, scale insects, rice planthopper, rice leaf folders, prodenia litura, bradysia odoriphaga, tryporyza incertulas, leafhopper, phyllocnistis citrella stainton, cotton aphid, cotton bollworms, phyllocoptes oleivorus ash, tea lesser leafhopper, plutella xylostella, cabbage caterpillar, and asparagus caterpillar; the application amount of pesticides is reduced, the residues of pesticides on crops are reduced, and the environment pollution is reduced; and the composition is safe to people and livestock and good in environmental compatibility, and pests are unlikely to produce pesticide resistance.

The invention provides a method for grafting a grapevine, and relates to the technical field of fruit tree cultivation. According to the method, when seedling-raising by grafting is conducted, selection of a grapevine rootstock is the first issue to be taken into consideration, different rootstocks have different adaptations and requirements on the environment, are different in rooting situations and scion variety grafting compatibility situations, and especially have different resistances to soil-borne diseases and pests, such as phylloxera, nematodes and agrobacterium tumefactions, so that the variety of a grapevine rootstock suitable for the local area or a local wild grapevine is selected as the rootstock by comprehensively taking the soil, climate and local diseases and pests in the grape development area, the market required grapevines and other factors into consideration before seedling cultivation; grafting is conducted by adopting a grafting and cuttage propagation method or rooted nursery stock grafting method; and after-grafting management should be taken into consideration. The method is simple, is convenient for practical operation, has a high survival rate, is convenient to manage, and can be used for effectively improving the disease resistance of grapevines and increasing yield.

The invention discloses a plant medicament for controlling phylloxera, comprising the components of 5000g of strophanthus divaricatus branches and leaves, 6000g of yellow fortune paulownia leaf, 6000g of polygonum hydropiper, 2000g of garlic head, 3000g of ginger, 5000g of peach leaves, 1000g of kusnezoff monkshood, 3000g of lime water and 5000g of carbendazim. The plant medicament can be prepared by the following steps of: respectively crushing and completely combining the strophanthus divaricatus branches and leaves, the yellow fortune paulownia leaf, the polygonum hydropiper, the garlic head, the ginger, the peach leave and the kusnezoff monkshood together according to the proportion; pouring the mixture in a large iron pan, adding 500jin of warm water, and soaking for 1.5 hours; boiling with big fire for 30 minutes; stopping heating, filtering and obtaining medicament juice liquid; cooling and adding the lime water and the carbendazim by stirring; and after adding, stirring for 10 minutes to obtain a finished product of the plant medicament.

The invention discloses a chromafenozide-containing insecticidal composition. The insecticidal composition contains an active ingredient A and an active ingredient B, the active ingredient A is selected from chromafenozide, and the active ingredient B is any compound of the following: tolfenpyrad, spirotetramat and metaflumizone, and the active ingredient A and the active ingredient are in a weight ratio of 1:70-70:1. The composition provided in the invention can control a plurality of pests, has an obvious synergistic effect, expands the insecticidal spectrum, and has high activity on Chilo suppressalis, beet armyworms, peach fruit moths, olethreutid, cotton bollworms, Pierisrapae Linne, plutella xylostella, aphids, thrips, phylloxeras, mealybugs, aleyrodid, scale insects, Cnaphalocrocis medinalis, pectinophora gossypiella, Mamestra brassicae, and Agrotis ypsilon on fruit trees, vegetables, rice, cotton and beans. Also, the dosage of pesticides is reduced, the pesticide residue on crops is lowered, and the environmental pollution is alleviated. Being safe to human and livestock, the insecticidal composition has good environmental compatibility, and pests are less likely to generate drug resistance.

The invention discloses a pesticide composition, which is characterized in that the composition comprises an active component of acetamiprid and carbosufan, the weight ratio of two active components is 1: (0.05 to 30).The pesticide composition has the advantages of being widely applicable to the crop plants such as grain crops, cereals, corns, cotton, vegetables, and fruit trees, having positive effect of preventing and curing the crop harmful sucking pests in the families of hemiptera, thrips, homoptera, and dipteral, such as pentatomid, thrips, cicada, leafhopper, plant hopper, whitefly, phylloxera, aphid, scale insect, wheatmidge, pachydiplosis oryzae, acarid, and the other pests, and demonstrating the significant synergistic activity, which is different from the prior other pesticides.

The invention provides an agricultural acaricidal composition and application thereof, and belongs to the field of acaricides. The acaricidal composition selects effective components pyridaben and fenoxycarb for compounding, and the acaricidal composition has the characteristics of high acaricidal activity, long lasting time, low toxicity, environmental protection and the like. The acaricidal composition comprises effective components, namely pyridaben and fenoxycarb, wherein the mass ratio of pyridaben to fenoxycarb is (40: 1)-(1: 40). The pyridaben and the fenoxycarb are reasonably compounded, so that the prevention and treatment range of the pesticide can be expanded, and the effects of improving pesticide effect and delaying pesticide resistance are achieved. The acaricidal compositioncan be used as an agricultural acaricide and can be used for preventing and treating pests with piercing-sucking mouthparts and especially has obvious effects on phytophagous mites, citrus red mites,aphids, phylloxera, whiteflies, scale insects, cabbage caterpillars, plutella xylostella, leaf miners and the like and has great popularization and use prospects.

The invention relates to an insecticidal composition containing 1-((6-chloropyridine-3-yl) methyl)-5-propoxy-7-methyl-8-nitryl-1,2,3,5,6,7-hexahydroimidazo[1,2-alpha] pyridine) and cypermethrin, and the insecticidal composition is highly effective for preventing animal pests. The insecticidal composition comprises the active ingredients the 1-((6-chloropyridine-3-yl) methyl)-5-propoxy-7-methyl-8-nitryl-1,2,3,5,6,7-hexahydroimidazo[1,2-alpha] pyridine) and the cypermethrin, wherein the weight ratio of the 1-((6-chloropyridine-3-yl) methyl)-5-propoxy-7-methyl-8-nitryl-1,2,3,5,6,7-hexahydroimidazo[1,2-alpha] pyridine) to the cypermethrin is (1:25)-(25:1), and the percentage composition of the 1-((6-chloropyridine-3-yl) methyl)-5-propoxy-7-methyl-8-nitryl-1,2,3,5,6,7-hexahydroimidazo[1,2-alpha] pyridine) and the cypermethrin in total is 1%-80%. According to the invention, the binary combination is performed on the 1-((6-chloropyridine-3-yl) methyl)-5-propoxy-7-methyl-8-nitryl-1,2,3,5,6,7-hexahydroimidazo[1,2-alpha] pyridine) and the cypermethrin so as to achieve a synergic effect on the insecticidal efficacy, the control effects on preventing lepidoptera, homoptera and arachnoidea pests on wheat, rice and vegetables are remarkable, and particularly, the insecticidal composition has remarkable effects on preventing froghoppers, leafhoppers, treehoppers, fulgoras, plant hoppers, phylloxeras, whiteflies, aphids, scale insects, cotton bollworms, leaf mites, thrips and stinkbugs.

Rootstock ‘8909-05’ is a cross of Vitis rupestris ‘A. de Serres’×Muscadinia rotundifolia ‘Cowart’. This invention relates to a new and distinct variety of grape rootstock with resistance to a broad array of soil-borne nematodes including root-knot, dagger, citrus, lesion, and ring nematodes. The rootstock also resists grape phylloxera. Rootstock ‘8909-05’ is one of the rare sources of resistance to ring nematode. The rootstock has extremely strong and broad nematode resistance.

The invention discloses a method for preventing and treating citrus yellow shoot. The problem that an existing method for treatment of citrus yellow shoot is poor in effect is solved. The method comprises the following specific steps: step 1, punching a citrus tree; step 2, performing perforating by an injector; 3, preparing a prevention and treatment liquid medicine; 4, injecting the prevention and treatment liquid medicine; and step 5, pulling out the injector, and smearing lime slurry. A prevention and treatment medicine obtained by combining plant extracts is mixed with water to form the prevention and treatment liquid medicine, and the prevention and treatment liquid medicine is injected into citrus trees by adopting an injector injection mode, so that the medicine rapidly enters phloem of diseased trees, has an obvious inhibition effect on gram-negative bacteria causing the yellow shoot, and can effectively kill pathogens, and the citrus tree body generates an antibody and is notafraid of secondary pathogen transmission of phylloxera, so that the purpose of preventing and treating citrus yellow shoot is achieved, the operation is simple, time and labor are saved, economic losses caused by digging or cutting off citrus trees are avoided, and the application prospect is wide.

The invention discloses a pesticide composition containing sulfoxaflor and d-limonene. The effective active components of the pesticide composition are sulfoxaflor and d-limonene, and the weight ratioof sulfoxaflor to d-limonene is 30: 1 to 1: 30. The pesticide composition disclosed by the invention has excellent prevention and treatment effects on various pests on crops, especially on thrips, scale insects, phylloxera, aphids, leafhoppers, plant hoppers, whiteflies, stink bugs and other pests. After sulfoxaflor and d-limonene are compounded, a remarkable synergistic effect is achieved. The use amount of pesticide can be reduced, the use cost is reduced, pollution to the environment is reduced, generation of pest resistance to insecticide is delayed, and the service life of the pesticideis prolonged.

The invention provides an efficient insect attracting composition for evergreen trees. The efficient insect attracting composition is prepared from, by weight, 4-6 parts of hydroxypropyl-beta-cyclodextrin, 10-20 parts of fluid wax, 4-6 parts of sodium alginate, 2-3 parts of glucolactone, 1.5-2.5 parts of Vaseline, 1.5-2.5 parts of rosemary essential oil, 0.15-0.25 part of peptide sweeteners, 1-2 parts of octadecanol, 0.15-0.2 part of azadirachtin, 0.2-0.4 part of hydroxy propyl cellulose, 1-2 parts of strawberry essence, 2-3 parts of rose hydrosol and 0.08-0.15 part of potassium sorbate. The efficient insect attracting composition has a good attracting effect on stem and leaf decaying pests such as aphids, phylloxeras and ceroplastes rubens, the lasting effective time of one bottle of the compositions is more than 90 days, not only is the attracting activity high, but also the environment is not polluted, the preparation technology is simple, the cost is saved, the labor amount is greatly reduced, and safety, directness, environment protection and high efficiency are achieved.

Rootstock ‘9365-85’ is a cross of ‘L514-10’ (Vitis rufotomentosa×V. champinii ‘Dog Ridge’×V. riparia ‘Riparia Gloire’))×V. champinii ‘c9038’. This invention relates to a new and distinct variety of grapevine rootstock plant with resistance to a broad array of soil-borne nematodes including root-knot, dagger, lesion and citrus nematodes. The variety is moderately susceptible to ring nematode, but has strong resistance to grape phylloxera.

The invention discloses a pesticide composition with xiaochongthion and cyenopyrafen. The pesticide composition consists of effective active components, namely xiaochongthion and cyenopyrafen, whereinthe weight ratio of the xiaochongthion to the cyenopyrafen is (30:1)-(1:1). The pesticide composition disclosed by the invention is excellent in effect of preventing and treating scale insects, phylloxera, red spiders and the like on citrus trees and is long in effect lasting time and safe to citrus trees. After being compounded, the xiaochongthion and the cyenopyrafen have a remarkable synergistic function, the use amount of pesticides is reduced, the use cost is reduced, environment pollution is reduced, drug resistance of insects is delayed, and the service life of the pesticide is prolonged.

The invention relates to an insecticidal composition containing spirotetramat and thiacloprid, and active ingredients of the insecticidal composition include spirotetramat and thiacloprid. The mass ratio of spirotetramat to thiacloprid is 1-50: 50-1. The mass fraction ratio of spirotetramat and thiacloprid in the preparation is 1%-80%. The rest is auxiliary ingredients which are allowed to be used and accepted in a pesticide. Dosage forms of the insecticidal composition include emulsifiable concentrate, a suspending agent, wettable powder, water dispersible granules, an emulsion in water, a microemulsion, water dispersible granules, microcapsules and soluble concentrate. The insecticidal composition can be used for effectively control various piercing-sucking mouthpart injurious insects (such as aphid, thrips, phylloxera, mealybug, aleyrodid, scale insect and the like) on cotton, soybean, orange, tropical fruit trees, nut, grape, hop, potato and vegetables.

The invention discloses a DNA (Deoxyribonucleic Acid) molecular marker for rapidly identifying phylloxera resistance of grape stock. The method comprises the following steps: by taking grape stock to be detected as a DNA template and oligodeoxynucleotide sequences Seq01 and Seq02 as a primer pair, carrying out polymerase chain reaction amplification on the DNA molecular marker interlocked with the phylloxera resistance; and carrying out electrophoretic detection on the product obtained by amplification, if a DNA stripe corresponding to the DNA molecular marker exists in the electrophoretic result, showing that corresponding grape stock has phylloxera resistance, and if the DNA stripe corresponding to the DNA molecular marker does not exist in the electrophoretic result, showing that corresponding grape stock does not have the phylloxera resistance. The molecular marker can be used for DNA molecular marker-assisted selective breeding for phylloxera resistance character. By taking a special DNA molecular marker stripe as a road sign, the phylloxera resistance gene can be precisely positioned or the phylloxera resistance gene is approached by a genome walking method, thereby laying a foundation for cloning the phylloxera resistance gene.

The inventin discloses an insecticidal composition. Active ingredients of the insecticidal composition at least comprise destruxins and spirotetramat; the weight ratio of the destruxins to the spirotetramat is 1: 15-15: 1, and is 1: 10-1: 1 preferably. Prevention and control of the insecticidal composition on crop pests in the proportional region show a certain synergetic effect. The insecticidal composition can be prepared into an optional dosage suitable for agricultural production, includes but not limited to any one of emulsifiable concentrate, wettable powder, water dispersible granules, suspension agent, aqueous emulsion, microemulsion and a suspended emulsion agent, and is particularly suitable for preventing and controlling pests such as aleyrodid, aphid, phylloxera, thrips and beetles.

Rootstock ‘9365-43’ is a cross of ‘L514-10’ (Vitis rufotomentosa×(V. champinii ‘Dog Ridge’×V. riparia ‘Riparia Gloire’))×V. champinii ‘c9038’. The rootstock is a new and distinct variety of grape rootstock with resistance to a broad array of soil-borne nematodes including root-knot, dagger, lesion and citrus nematodes. The rootstock is susceptible to ring nematode, but has strong resistance to grape phylloxera.

The invention relates to an insecticidal composition containing spirotetramat and fufenozide. The effective ingredients are the spirotetramat and fufenozide, wherein the mass ratio of the spirotetramat to the fufenozide is (1-50):(50-1), the mass fraction of the effective ingredients of spirotetramat and fufenozide in the preparation is 1-80 percent, and the rest is auxiliary ingredients used and accepted by pesticides. The dosage forms of the insecticidal composition include missible oil, suspending agent, wettable powder, water dispersible granule, emulsion in water, microemulsion, granule, microcapsule and aqueous solution, and the insecticidal composition is mainly used for preventing and controlling lepidoptera pests such as beet armyworms and plutella xylostella, and pests with piercing-sucking mouthparts, such as aphids, thrips, phylloxera, mealybugs and scale insects.

The invention discloses an amitraz-containing high-efficient compounding pesticide composition, and belongs to the technical field of chemical prevention and treatment of injurious insects. The first active component in the pesticide composition is amitraz and the second active component is cyantraniliprole, wherein the mass ratio of the first active component and the second active component is (1-20): (1-12). The compounding pesticide composition is used for preventing orange phylloxera, the partition ratio of every component is reasonable; the activity and insecticidal efficacy have significant synergism, the drug cost is low; the resistant generation can be released, and the composition is good for crops safety.

The invention provides a novel insecticidal composition which comprises the active ingredients of a celastrus angulatus root extract and a Chinese prickly ash extract. The preparation method comprises the following steps of (1) mixing the active ingredients with cyclohexanone to obtain an oil-phase mixture; (2) mixing a pesticide emulsifier 2201, sodium benzoate, ethylene glycol, piperonyl butoxide, 1,2-butanediol and 1 / 2 of water to obtain a water-phase mixture; and (3) adding the water-phase mixture obtained in the step (2) into the oil-phase mixture obtained in the step (1), and simultaneously supplementing the balance of water to form an oil-in-water type insecticidal water emulsion. Water is taken as a matrix, so that the preparation is safe to the environment, not easy to combust and convenient to store and transport; compared with a single agent, the novel insecticidal composition has the advantages of high pesticide effect and long lasting period and the pest resistance to insecticides is delayed; the novel insecticidal composition has good prevention and treatment effects on resistant aphids and phylloxera; and the active ingredients can be degraded in nature, so that the insecticidal composition has the characteristics of being good in environmental compatibility, free of residue, free of pollution, safe, environment-friendly and safe to people and animals.

The invention discloses an insect and mite killing composition containing pyriproxyfen and cyflumetofen. Effective components of the insect and mite killing composition are pyriproxyfen and cyflumetofen, wherein the weight ratio of pyriproxyfen to cyflumetofen is (30 to 1)-(1 to 30). The insect and mite killing composition has an obvious synergistic interaction effect and can be used for preventing and controlling multiple insects, such as red spiders, aleyrodid, phylloxera, thrips, aphids and testas in agriculture; meanwhile, the use amount of pesticides is reduced, so that the residual amount of the pesticides on crops is reduced; therefore, the pollution to the environment is alleviated, and the pesticide resistance of the insects is delayed.

The invention discloses a citrus seedling microwave heating sterilization device. The citrus seedling microwave heating sterilization device comprises an assembly line transportation device, a microwave sterilization device and a plant essential oil atomization device, wherein the microwave sterilization device and the plant essential oil atomization device are respectively arranged above the assembly line transportation device; and one part of the assembly line transportation device sequentially penetrates through the microwave sterilization device and the plant essential oil atomization device in the transportation direction. The citrus seedling microwave heating sterilization device is reasonable in structural arrangement, bast stalk bacteria (yellow shoot bacteria and phylloxera) can be efficiently, rapidly and environmentally friendly killed before the citrus seedlings are planted or grafted through one-time microwave heating of the microwave sterilization device and chemical disinfection of the plant essential oil atomization device in the citrus seedling conveying process, and detoxification of the citrus seedlings is assisted, so that the propagation and spreading of the citrus yellow shoot are controlled, the citrus yellow shoot is effectively prevented and treated, the moisture in the citrus seedlings can be fully protected, and the damage and death rate are reduced.

The invention discloses an insecticidal and acaricidal composition containing buprofezin and spirodiclofen. The composition contains buprofezin and spirodiclofen which serve as active ingredients, wherein a ratio of buprofezin to spirodiclofen is equal to (1:40) to (40:1) in parts by mass. In practical application, the composition can be prepared into such application dosage forms as a suspending agent, an emulsion in water, a microemulsion, water dispersible granules, wettable powder, ultra-low volume liquor, a microcapsule suspending agent and hot fogging concentrate, and the total weight of buprofezin and spirodiclofen accounts for 1%-85% of the weight of the composition. The insecticidal and acaricidal composition disclosed by the invention has a synergistic effect, widens a prevention and control spectrum and can be used for preventing and controlling various agricultural pests such as red spiders, leafhopper, aleyrodid, phylloxera and scale insects.

The invention relates to the field of biological prevention and control of agricultural pests, and discloses a large-scale production method of diaphorina algida. The large-scale production method of the diaphorina algida mainly comprises the following four steps of (1) establishing a diaphorina algida population; (2) preparing a diaphorina citri population to be parasitized; (3) inoculating a parasitic wasp of diaphorina citri, namely the diaphorina algida, into the diaphorina citri population to be parasitized; and (4) collecting the parasitic wasps. The large-scale production method of the diaphorina algida is simple in process and controllable in breeding scale, and propagation expanding work can be carried out all year round and is not limited by seasons; meanwhile, eclosion time of the parasitic wasps is concentrated, population quantity is controllable, interference of phylloxera does not need to be considered during wasp collection, and operation is simple; meanwhile, the method has no special rigid requirements on the types and sizes of host plants and is suitable for all the host plants of the diaphorina citri, and the utilization rate of the host plants is high.