157 results about "Psylla" patented technology

The invention discloses a compounded botanical synergistic pesticide. The obtained compounded botanical synergistic pesticide takes sophocarpidine and macleaya alkaloids as main components, and is added with accessory ingredients in a synergistic manner; the morphology of the compounded botanical synergistic pesticide is environment-friendly missible oil, water aqua or soluble liquid; and in addition, the compounded botanical synergistic pesticide comprises sophocarpidine accounting for 0.1 to 20 percent and the macleaya alkaloids accounting for 0.1 to 20 percent, and the rest is the accessory ingredients. The compounded botanical synergistic pesticide is mainly used for controlling aphides on melons, fruits and vegetables as well as agricultural pests such as red spiders, Chinese chive maggot, poratrioza sinica yang et li, psylla chinensis, imported cabbageworm, cabbage moths and army worms. The compounded botanical synergistic pesticide does not contain any chemical pesticide component, is easy to degrade in environment, has no consideration of environment pollution and residual hazard, is safe to human, livestock and environment; pests are not easy to be drug-resistant to the compounded botanical synergistic pesticide; the compounded botanical synergistic pesticide is of great value to be applied and popularized on main agricultural and sideline products that earn foreign exchange through exports, such as the melons, the fruits, the vegetables, flowers and medicinal materials; and in addition, the compounded botanical synergistic pesticide is an ideal novel pollution-free pesticide.

The invention discloses a plant source pesticide for efficiently preventing and controlling main golden autumn pear diseases and insect pests (psylla chinensis, pear yellow meal aphid, schizaphis piricola, fruit piercing moth and pear black spot). The plant source pesticide is mainly prepared from ginkgo leaf, stem and leaf of tung tree, oleander leaf, arborvitae leaf, Chinese red pine leaf, litsea cubeba fruit, tea-oil tree residue cake, marigold root and sabina vulgaris leaf by extracting and processing. Meanwhile, the invention discloses a preparation method and application of the plant source pesticide, and belongs to the technical field of plant protection. The plant source pesticide can efficiently prevent and control the main golden autumn pear diseases and insect pests such as psylla chinensis, pear yellow meal aphid, schizaphis piricola, fruit piercing moth and the like, can effectively inhibit the growth of pathogenic bacteria of the pear black spot of the golden autumn pears at the same time, and has good environmental safety and good development and application prospects.

The invention belongs to the technical field of plant disease and insect pest control, and particularly discloses a method for preventing the citrus tristeza virus. The method is especially suitable for preventing the citrus tristeza virus of fruit bearing production type citrus trees. According to the method, through special management of spring shoots, summer shoots, early and late autumn shoots and winter shoots of the citrus trees every year, the food sources and breeding sites of citrus psylla spreading the citrus tristeza virus can be effectively eliminated so that eggs and nymphs can not grow and develop normally, the number of subcultured pest sources is reduced greatly, and then an ideal preventing effect is realized; meanwhile, the usage amount of insecticides can be reduced, natural enemy protection is achieved, and prevention cost is reduced; furthermore, compared with the shoot control scheme, the method has the advantages that the growth of the citrus trees is not affected, and the effect of eliminating the food sources and breeding sites of citrus psylla spreading the citrus tristeza virus is remarkable.

The invention relates to the technical field of orange insect disease prevention and treatment and discloses a composition for trapping diaphorina citri and a trapping method using the same. The composition comprises gamma-terpinene, linalool, beta-caryophyllene and alpha-copaene. The trapping method comprises the following steps of putting the composition into a transparent plastic insect-trapping bottle, covering the bottom with a bottle cover, spraying an insect binder to the outer part of the insect-trapping bottle to obtain an insect binding bottle, hanging the insect binding bottle on a diaphorina citri host plant, and carrying out diaphorina citri trapping and binding. The composition can improve a trapping amount by 62 times in the case of high diaphorina citri density, has substantial trapping effects, can be used for preventing, treating and forecasting diaphorina citri, and can also be used for preventing citrus Huanglongbing propagated by diaphorina citri.

The invention discloses a formula, a preparation method and an application of a dispersible oil suspending agent containing spirotetramat and dinotefuran. The formula comprises 5-50% of spirotetramat, 5-50% of dinotefuran, 5-25% of emulsifying agent, 2-15% of dispersing agent, 1-8% of wetting agent, 1-7% of thickening agent, 1-6% of stabilizing agent and the balance of dispersion medium. The suspending agent has the characteristics of environmental protection, high crop safety, rain drop erosion resistance, long lasting period and the like, and has a good control effect on scale insects, aphis, phylloxera and trialeurodes vaporariorum.

The invention discloses a combination light source with a good trapping effect for citrus psylla adults. The combination light source at least comprises an LED lamp drive power source and two kinds of LED lamps connected with the LED lamp drive power source, wherein one kind of LED lamps can generate light with the wave length of 340 nm; the other kind of LED lamps can generate light with the wave length of 545 nm. The combination light source is composed of the two kinds of LED lamps capable of generating light with the wave length of 340 nm and 545 nm. Experiments show that the combination light source has the good trapping effect for citrus psylla adults; compared with single light with the wave length of 340 nm and single light with the wave length of 545 nm, the trapping effect is better, and the effect improving function is achieved.

The invention discloses a prevention and treatment method for citrus huanglongbing. The method comprises the following steps: cleaning an orchard in winter; spraying a chemical drug normally used for killing citrus psylla; and spraying a chemical drug capable of inhibiting bud germination before germination of summer shoots of citrus every year. According to the method, directed at the living habit of the huanglongbing propagating source--citrus psylla, the chemical drug capable of inhibiting bud germination is sprayed so as to effectively cut off places where citrus psylla grows, lays eggs and propagates, so the amount of citrus psylla population is drastically decreased, thereby achieving the purposes of prevention and treatment of huanglongbing; moreover, the disadvantages of fruit drop and damage to the tree shape of citrus caused by excess consumption of tree nutrients by considerable production of summer shoots are overcome. Compared with conventional spraying manners for chemical drugs used for killing citrus psylla, the method provided by the invention has obvious prevention and treatment effects.

The invention relates to the fields of prevention and treatment of citrus plant diseases and insect pests, and particularly relates to a composition for trapping diaphorina citri kuwayama and an application method of the composition. The composition comprises gamma-terpinene, alpha-pinene and linalool. The method comprises the following steps: putting the prepared composition into a transparent plastic trapping bottle; covering by a bottle cap, and spraying an insect sticker outside the trapping bottle to prepare an insect sticking bottle; and hanging the insect sticking bottle on a host plant of the diaphorina citri kuwayama to trap and stick the diaphorina citri kuwayama, wherein the trap quantity of the composition under the condition of high diaphorina citri kuwayama density can be increased by 49.3 times, and the trapping quantity at low diaphorina citri kuwayama density is also increased by 5.17 times. The trapping effect of the composition is significant; the composition can be applied to prevention, treatment and prediction of the diaphorina citri kuwayama; and meanwhile, the propagated citrus yellow shoot is prevented.

The invention discloses a citrus psylla attractant which is prepared from the following components in percentage by weight: 1%-5% of alpha-pinene, 50%-80% of D-limonene, 1%-5% of ocimene, 1%-5% of linalool, 10%-20% of gamma-terpinene, 1%-5% of naphthalene, 1%-5% of n-tetradecane, 1%-5% of linalyl acetate, 1%-5% of methyl salicylate, 1%-5% of lauric acid, 1%-5% of citral, and 1%-5% of acetic acid.The citrus psylla attractant has the advantages of good attracting effect, strong specificity, long lasting time, high efficiency, natural property, environmental protection and the like, and does notcause harm to natural enemies, beneficial insects, human and livestock and crops, and target pests do not produce resistance to the attractant.

The invention relates to an insecticidal compound containing clothianidin and bifenthrin as effective components and an application thereof. The insecticidal compound provided by the invention is mainly used in the research and application of controlling whitefly and aphid. The insecticidal compound provided by the invention is characterized by containing the active components of clothianidin and bifenthrin. The compound contains 0.1-50 wt% of clothianidin, 50-0.1 wt% of bifenthrin and the balance being auxiliary components which are allowed and can be accepted in pesticides. The insecticidal compound provided by the invention can be applied to control a plurality of Hemiptera, coleopteran and Lepidoptera insects, such as whitefly, plant hopper, aphid, leafhopper, thrip, Psylla chinensis Yang et Li, Myzus persicae, yellow aphids, Myzus persicae, pod borer and the like, on paddy rice, vegetables, fruit trees and other crops. The insecticidal compound provided by the invention has an outstanding effect of controlling lepidoptera insects and piercing-sucking insects on crops.

The invention discloses application of a special light source in the aspect of diaphorina citri trapping and a diaphorina citri trapper. The wavelength of the special light source is 409.9-511.6 nanometers. Light of different wavelengths has different trapping rates for diaphorina citri trapping, the diaphorina citri has the high response index and the positive phototaxis index for the light source with the wavelength being 409.9-469.2 nanometers or 491.6-511.6 nanometers. When the light source of the wavelength is adopted, the effect of trapping diaphorina citri through lamplight can be greatly improved; meanwhile, the wavelength of the special light source is single, the pertinence is high, the diaphorina citri trapping specificity is high, and damage caused to other insects, particularly beneficial insects is small. The light source of the specific wavelength is adopted for trapping diaphorina citri, the effect of trapper lamplight trapping can be remarkably improved, the diaphorinacitri prevention effect of the trapper is improved, the consumption of chemical pesticide is lowered, pesticide residues on diaphorina citri are reduced, generation of chemical pesticide resistance of diaphorina citri is delayed, and contaminations of chemical pesticide to the environment are reduced.

The invention discloses a method for preventing and treating citrus yellow shoot. The method includes the steps: cleaning an orchard in winter; spraying normal medicines for killing citrus psylla; spraying medicine compositions for preventing the citrus yellow shoot for 1-3 times before citrus summer shoot germination every year. By the method for preventing and treating the citrus yellow shoot, yield and sugar content can be increased, citruses are good in taste, mellow and full in appearance and high in quality, and use effects of the medicine compositions are higher than those of conventional medicine compositions for preventing the citrus yellow shoot.

The invention discloses an artificial feeding method for diaphorina citri. The method includes the following steps that feed plant cultivation and management are conducted, wherein feed plants include murraya paniculata and citrus; woodlice are fed; a woodlouse feeding cage is cleaned; and the feed plants are repaired. According to the method, a large number of woodlouse imagoes and nymphs not carrying Candidatus liberobacter asiaticus can be bred, and a large number of indoor woodlouse insect sources not carrying germs can be provided for areas where few woodlice or no woodlouse exists so as to meet needs of relevant tests.

The invention discloses a Paecilonyces variotii bacterial strain having high virulence to citrus psylla and an application thereof and relates to the technical field of biological prevention and control. The bacterial strain is Paecilonyces variotii GZMS-11, preserved in China Center for Type Culture Collection on October 29, 2015 with the preservation number CCTCC NO: 2015651. The Paecilonyces variotii GZMS-11 has high virulence to citrus psylla, can be developed into biopesticide for biological prevention and control of citrus psylla. Compared with existing chemicals for prevention and control of citrus psylla, the Paecilonyces variotii GZMS-11 has the advantages of being highly efficient, environment-friendly, high in persistence and not easy to cause drug resistance, and has no pollution to the environment and results in no residue. The bacterial strain of the Paecilonyces variotii GZMS-11 grows fast, has high sporulation yield and high germination rate of spores, is easy to prepare, and has good market perspective.

The invention relates to a clothianidin and chlopyrifos containing composite pesticide with high efficiency and low toxicity, and is especially used for an application research of preventing and controlling rice planthopper. The active ingredients of the insecticidal composition are clothianidin and chlopyrifos, the weight percentage of two active ingredients are 0.1%-50% of clothianidin and 50%-0.1% of chlopyrifos, the balance are an auxiliary agent and a carrier. The application range of the insecticidal composition is for preventing and controlling a plurality of hemiptera insects, coleopteran insects, diptera insects and certain lepidopterathe insects such as aphid, leafhopper, thrips, plant hopper and the like on paddy rice, vegetable, fruit tree and other crops, the insects are plant hopper, rice leaf roller, chilo suppressalis, sulzers, peach aphid, psylla pyrisuga, whitefly and the like.

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 belongs to the field of agricultural science and in particular relates to an artificial feeding method of diaphorina citri kuwayama. The method comprises the following steps: putting nutrient soil into a small transparent plastic cup, and culturing a diaphorina citri kuwayama host plant, wherein drainage holes are formed in the bottom of the small plastic cup; inoculating diaphorinacitri kuwayama with the host plant, covering the small plastic cup by using a large transparent plastic cup in an embedding manner, and performing culture under conditions that the temperature is keptto 28+ / -0.5 DEG C, the relative humidity is 60+ / -5% and the light cycle is 14L:10D, so as to obtain imagoes of diaphorina citri kuwayama, wherein vent holes are formed in the top of the covering large plastic cup. The artificial feeding method of the diaphorina citri kuwayama, which is provided by the invention, is simple and feasible, and is particularly applicable to indoor breeding, and the life history of the diaphorina citri kuwayama can be observed. By adopting the method, an insect source material can be provided for research and development of sex pheromone, screening of medicines, resistance monitoring and resistance risk evaluation on the diaphorina citri kuwayama, meanwhile, a breeding device is simple, the breeding cost is low, breeding host plants and the like can be repeatedly used for multiple times, and the cost can be reduced.

dsRNA generated from D. citri trehalase gene is effective in reducing fitness and / or survival of D. citri. Thus genetically altered plants expressing the dsRNA and plants to which dsRNA solutions are applied increase D. citri mortality and reduce D. citri infestation. With reduced D. citri population, the spread of microorganisms for which D. citri is a vector is reduced. Such microorganisms include, but are not limited to, C. Liberibacter species, including: CLas, CLam, and CLaf. Thus, applying of the D. citri trehalase dsRNA to a plant reduces disease and / or microorganism transmission by killing D. citri that feed on the treated plant.

The invention relates to an application of a cynanchum glaucescens extract in controlling psylla chinensis, belonging to the field of biological control of plant sources. Control effects of cynanchum glaucescens extract water aqua on overwintering psylla chinensis adults are preliminarily studied by using indoor toxicity measurement and field trial methods. Researches show that the cynanchum glaucescens extract water aqua in different concentrations has remarkable lethal effect on the overwintering psylla chinensis adults; after the overwintering psylla chinensis adults are treated for 24 hours, the field control effect of 0.07mg / mL of cynanchum glaucescens extract water aqua on psylla chinensis adults reaches 66.8%, and the indoor biological measurement effect reaches 100%; and the concentration of a formula is positively associated with the lethal effect on the overwintering psylla chinensis adults. Research results provide a green control medicament and technology for control of the overwintering psylla chinensis adults in pear orchard.

Provided are chimeric Hemiptera-active insecticidal toxin proteins comprising a Bt toxin peptide with activity against Hemiptera, a peptide multimer or fusion protein containing such peptide which binds to the gut of sap-sucking insects, preferably the Asian citrus psyllid, Diaphorina citri. This insect carries a bacterium associated with Huanlongbing disease or citrus greening and damages citrus crops. When bound, this peptide mediates the binding of the chimeric insecticidal protein to the target insect gut. Also described are coding sequences, vectors, and transgenic plants genetically modified to contain and express such insecticidal proteins. Other delivery mechanisms such as use of phloem-inhabiting bacteria, are also contemplated. Thus, the use of these toxins reduces economic loss due to feeding by the target insect and also reduces loss due to plant diseases spread by the target insect.

The invention discloses graphene nanomaterial-containing tree trunk injection liquid for preventing and treating citrus psylla. The graphene nanomaterial-containing tree trunk injection liquid is prepared from the following raw materials in percentage by mass: 0.2 to 20.0 percent of an active component and 0.1 to 30 percent of a graphene nanomaterial, wherein a weight ratio of the active componentto the graphene nanomaterial is (100:10) to (100:500); the pesticide active component comprises a nicotine insecticide. The graphene nanomaterial-containing tree trunk injection liquid prepared by the invention is used for injecting medicine into tree trunks, the active component has very good vertical conductivity on a citrus wood layer after the graphene nanomaterial-containing tree trunk injection liquid is injected to the citrus wood layer, and the active component can also be easily conducted to a citrus phloem part in aspect of horizontal conduction so as to be conducted to tender tipsand roots, so that the effect of preventing and treating the citrus psylla can be achieved; the graphene nanomaterial-containing tree trunk injection liquid prepared by the invention is used for preventing and treating the citrus psylla, and the corrective control effect can be up to 93.4 percent after 40 days, so that the purpose of preventing and treating citrus huanglongbing can be achieved.

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 discloses a diaphorina citri kuwayama green prevention and control method, and belongs to the field of crop pest control. The method comprises the following steps of planting a host plant of the diaphorina citri kuwayama around a citrus fruit tree as a trap, spraying a repellent on the citrus fruit tree, and arranging a trap containing the attractant on the host plant, so that the diaphorina citri kuwayama is driven away from the citrus fruit tree and lured to the host plant for elimination. Compared with the prior art, the method has the advantages of being high in prevention and treatment efficiency, green, environmentally friendly, not prone to generating resistance and the like.

The invention discloses a pesticide composition containing cyenopyrafen and spirotetramat and a preparation method thereof, which belong to the technical field of pesticides and solve the problem thata single pesticide can hardly have both quick-acting property and persistence. The pesticide composition is mainly prepared from active components and pesticide-acceptable excipient, and the active components include cyenopyrafen and spirotetramat; and among the active components, the mass ratio of cyenopyrafen to spirotetramat is (0.5 to 3) to 1. The compounding of cyenopyrafen and spirotetramathas the advantages of good quick-acting property and long persistence; the compounding of cyenopyrafen and spirotetramat solves the problem that the effect of cyenopyrafen in preventing and controlling phyllocoptruta oleivora ashmead is poor, meanwhile, the pesticidal range of spirotetramat is wider, and piercing-sucking pests, such as scale insects, psyllidae and aleyrodidae, can also be prevented and controlled; the acting sites of cyenopyrafen and spirotetramat are different, the acting mechanisms are also different, and the compounding of both can retard the occurrence of resistance of pest mites.

The invention belongs to the field of citrus planting, and particularly relates to a citrus orchard conducive pest control planting method. Guava fruiters are planted in a citrus orchard to increase the population quantity of phytoseiid mites in the citrus orchard, an independent environment is formed, citruses are planted, the periphery of each citrus tree is enclosed by the guava fruiters to form double barriers in a checkered manner, petroleum oils are sprayed in a matched manner, and pest control is fundamentally performed in the citrus planting process. According to the citrus orchard conducive pest control planting method, based on the capability of naturally breeding the phytoseiid mites by the planted guava fruiters, the guava fruiters and the citrus trees are planted in the checkered manner, the citruses are planted after the guava fruiters form crowns, and the petroleum oils are sprayed to control citrus tristeza viruses. The pest control function of natural enemies is a direct effective means for killing sole insect-borne citrus psyllas of citrus tristeza virus transmission pathogens in citrus planting.

The invention discloses single-dose pymetrozine. The single-dose pymetrozine comprises 10-80wt% of a pymetrozine solution, and can be processed to prepare a water dispersible granule of pymetrozine, a pymetrozine suspension and a wettable pulvis of pymetrozine. A pesticide composition containing pymetrozine comprises pymetrozine and thiacloprid, and a mass ratio of pymetrozine to thiacloprid is 80:1-1:80. Pymetrozine is prepared by extracting from a natural plant source raw material and processing, has the advantages of no pollution, no residual, advanced technology, good control effect and no influences on the quality of agricultural products, can be widely used in crops comprising grain crops, rice, corn, cotton, vegetables, fruits and the like, has active control effects on sucking pests of Heteroptera, Thysanoptera, Homoptera, Diptera and the like and harmful to the growth of the crops, such as plant hoppers, thrips, cicadas, leafhoppers, whiteflies, psyllids, aphids, scale insects, wheat midge, rice gall midges, mites, and is a new environmentally-friendly pesticide at present in China.

The invention provides a method for fast-growing high-yield afforestation of hackberries. The afforestation method comprises the following steps that (1) nursery stocks are chosen, wherein the nursery stocks which are robust, straight, upright, complete in root and free of plant diseases and insect pests are chosen; (2) afforestation is conducted; (3) cultivation management is conducted; (4) main diseases and insect pests are prevented, wherein slug moths, cotton aphids, plant louses and fall webworms are mainly prevented; (5) file management is conducted, wherein labor using and material consumption of various operations such as the positions and area of planting places, seedling sources, soil preparation, afforestation, cultivation management and the like are managed. According to the method, the robust nursery stocks with the ground diameters and the heights both achieving a certain level are chosen, then good afforestation lands are chosen for afforestation and planting, after soil preparation and base fertilizer application, the appropriate planting density is chosen for planting, then branches and trunks are trimmed after planting, and weeding and management of water and fertilizer are conducted. According to the method for fast-growing high-yield afforestation of hackberries, the cost is low, popularization is easy, the survival rate of afforestation can be achieved, forest stand plant diseases and insect pests can be lowered, the increment of forest stand plant average diameter at breast height is improved, and economic benefits are improved.

The invention discloses a method for controlling citrus yellow shoot.The particular method includes immediately controlling generation of new shoots when citrus fruits are just formed and preventing growth of the new shoots; promoting growth of autumn shoots when the fruits are ripe.The method has the advantages that the yellow shoot of citrus trees can be reduced by 80%-90%; the new shoots are controlled when citruses bloom and bear the fruits in April, so that infection of woodlice can be prevented, all nutritional ingredients of the citrus trees can be advantageously supplied to the fruits, and the yield can be greatly increased; the autumn shoots are allowed to grow when the fruits are ripe in the middle ten days and the last ten days in September, so that good fruit harvest in a next year can be guaranteed.

The invention discloses a botanical pesticide prepared by the following steps: immersing plant materials kuhseng, hellebore and lilac daphne in ethanol; press filtering, extracting and crystalling to obtain three discard solutions and three alkaloids of kuhseng, hellebore and lilac daphne; wherein, pesticide B is prepared by concentrating the three discard solutions and remixing emulsifiable concentrates in the following ratio: 3-9.6% by weight of kuhseng concentrated solution, 3-9.6% by weight of hellebore concentrated solution and 3-9.6% by weight of lilac daphne concentrated solution. According to the invention, the pesticide is a pure natural botanical pesticide that has the advantages of no pollution to environment, no residue, easy decomposition, no easy generation of drug tolerance, benefit and no harm to the crop, stimulation to the growth effect of fruit tree and vegetable of the crops. The vegetable insecticide has an obvious disinfestation effect to mythimna separate, aphid, fruit borer, red spider, cabbage worm, pear leaf psylla, leaf mite, etc. The vegetable insecticide has no harm to the crop and has excellent function for killing or inhibiting the fungi, and the effectiveness ratio can be above 90%.

The invention provides a novel technique for treatment of psylla chinensis in a pear orchard in winter. The technique is characterized by selecting measures like agricultural prevention and treatment, biological prevention and treatment and chemical prevention and treatment. Thus, the technique provided by the invention can realize the purposes of prevention and treatment of psylla chinensis, is favorable for growth and development of a pear tree, improves the quality of pear fruits, and is applicable to prevention and treatment of psylla chinensis in the pear orchard in winter.