77results about How to "To achieve the effect of prevention" patented technology

The invention discloses a liquid formulation containing imidacloprid for trunk injection, which comprises (by weight ratio) the following raw materials, imidacloprid 1.0-8.0%, insecticidal agent 0.01-15.0%, surface active agent 1-10%, and balancing solvent. The agent is applied mainly through dry injection method and can be use for controlling various insects on trees.

The invention discloses a trichoderma spore powder as well as a preparation method and application thereof. The trichoderma spore powder contains trichoderma spore powder and a drying aid, wherein the trichoderma spore powder is the spore powder of Trichoderma sperellum T1 which is preserved in the general microorganism center of CCCCM (China Committee for Culture Collection of Microorganisms) and has the preservation number of CGMCC NO: 3531 and a rDNA ITS region segment sequence shown in SEQ ID NO:1; the drying aid is one or more of beta-cyclodextrin, potato starch and soluble starch. The trichoderma spore powder has an effective prevention and control effect on banana vasicular wilt, and has a remarkable antagonism effect on various pathogenic funguses, especially on soil-borne funguses. The preparation time is saved with the preparation method of the trichoderma spore powder, which can be used for preparing the trichoderma spore powder which has high density, high germination rateand high drying efficiency and is easy to store, transport and use.

The invention discloses a lymantria dispar linnaeus heatshock protein Hsp23 gene and application of dsRNA thereof in nuisanceless control. A nucleotide sequence and a coded amino acid sequence of the Hsp23 gene are shown by SEQ ID No.1, the dsRNA is synthesized from part of sequence fragments of the gene, and the sequence of the dsRNA is shown by SEQ ID No.2. The dsRNA of the Hsp23 gene can be applied to control of the growth and development of lymantria dispar linnaeus. An experimental result shows that after the dsRNA of the Hsp23 gene is injected into a lymantria dispar linnaeus larva, compared with a contrast (injected with ddH2O and GFP gene dsRNA), a relatively strong silencing effect is achieved, so that the growth and development of the lymantria dispar linnaeus larva are inhibited. Therefore, the invention provides a silencing technology capable of using Hsp23 to control an important forest pest, namely the lymantria dispar linnaeus and lepidopterous pests with similar structural domains, thereby providing a new train of thought and a new technology for green control of forest pests.

The invention discloses Acinetobacter lactucae and an application thereof to degradation of a quorum-sensing signal molecule DSF (diffusible signal factor). The invention provides a bacterial strain of Acinetobacter lactucae QL-1, the bacterial strain is preserved in a China Center for Type Culture Collection on September 11th, 2017, and the preservation number is CCTCC NO: M2017487. The bacterialstrain can employ the quorum-sensing signal molecule DSF as a sole carbon source for growth, and 2mM of DSF signal molecules can be completely degraded in 15 hours with high degradation activity andstable degradation performance. The bacterial strain QL-1 has substantial biocontrol effects for black rot caused by Xanthomonas campestris XC1, and the bacterial strain also has characteristics of fast growth speed, simple cultivation method, good adaptation capability without easy variation, and great application potential for promotion of control of pathogens which are pathogenic depending on DSF; and at the same time, the product can reduce the problem of abuse of pesticides, and provides a new thinking for biological control of plant diseases.

The invention discloses a pesticide microcapsule with an easily-adjusted release rate. The pesticide microcapsule comprises a capsule core and a capsule material; the capsule material is polyurethaneobtained by cross-linking curing of isocyanate, a polyurethane soft segment and a chain extender, and the capsule material accounts for 2%-40% by mass of the pesticide microcapsule; and the capsule core includes an oil-soluble pesticide and an organic solvent, wherein the organic solvent accounts for 0-45% by mass of the pesticide microcapsule. According to the pesticide microcapsule provided by the invention, the oil-soluble pesticide is used as the capsule core and can cooperate with the capsule material in the preparation process to form the structurally-stable pesticide microcapsule; and the capsule material is obtained by a curing cross-linking reaction of the isocyanate, the polyurethane soft segment and the chain extender, the reaction speed is easy to control, and therefore the release rate of the pesticide microcapsule can be conveniently adjusted.

The invention belongs to the field of biological prevention and treatment, and provides antibiological inoculant for preventing and treating cucumber root knot nematode disease. The composite microbial inoculant is prepared from glomus mosseae inoculums and bacillus subtilis fermentation broth; the composite inoculants is selected from nine simple inoculants and twelve composite inoculants according to the development condition and nematode resistance condition; each composite microbial inoculant includes 5000 inoculum potential glomus mosseae; the total viable counts of bacillus subtilis fermentation broth reach 3*10<8>CFU / ml; glomus mosseae and bacillus subtilis inoculants are compounded and show obvious a synergistic interaction effect on preventing and treating root knot nematode by being compared with individual glomus mosseae inoculants or bacillus subtilis inoculants, and the preventing effect of root knot nematode is also obviously improved.

The invention discloses a control method for colletotrichum gloeosporioides penz. The control method comprises the following steps: sterilizing seeds, carrying out soil treatment, carrying out pest control, weeding, pruning and carrying out tree trunk treatment. By adopting a comprehensive control method, quantity of anthrax fungi in anise field pieces can be fundamentally reduced, damage degree can be alleviated, occurrence and transmission routes can be controlled, and finally the aim of comprehensively controlling the colletotrichum gloeosporioides penz is achieved. The control method disclosed by the invention has the advantage that control effect on the colletotrichum gloeosporioides penz can reach more than or equal to 90% and is much higher than the control effect of the conventional drug, so that the control method disclosed by the invention has a broad market popularization prospect.

The invention relates to a Chinese veterinary drug for treating yellow scours of newborn piglets and a preparation method thereof. The Chinese veterinary drug comprises the following components in parts by weight respectively: 15-25 parts of Chinese pulsatilla root, 25-30 parts of double blossom, 10-20 parts of astragalus root, 10-20 parts of cyrtomium rhizome, 5-10 parts of herba houttuyniae, 5-10 parts of coptis chinensis, 5-10 parts of indigowoad root, 10-20 parts of phellodendron amurense, 5-15 parts of cortex fraxini, 5-15 parts of serpent grass and 10-20 parts of angelica. The prepared Chinese veterinary drug for treating the yellow scours of newborn piglets belongs to pure natural Chinese herbal medicines, can treat the yellow scours of the newborn piglets, adjust the balance of entrails of the piglets and enhance the immunity of the piglets, is safe and environment-friendly without drug residues, and also has an effect on strains with drug tolerance to antibiotics. The Chinese veterinary drug is good in oral taking absorption effect, simple in process and suitable for industrial production, and has the characteristics of simplicity, convenience and fastness in use; and compared with other dosage forms, the Chinese veterinary drug is more suitable for treating the yellow scours of the newborn piglets in a large-scale farm.

The invention discloses a method for RNA (ribonucleic acid) interference of panonychus citri mites. The method includes the steps of feeding the panonychus citri mites, treating the panonychus citri mites with dsRNA solution, determining the molting and survival situation of treated the panonychus citri mites, and evaluating the effect of the RNA interference. The method has novel and reasonable design, enables the panonychus citri mites not to complete the normal molting so as to die with RNA interference, and thus, the purpose of preventing the panonychus citri mites is achieved, the amount of the chemical pesticides to be used can be reduced, and accordingly the method has a broad application prospect.

The invention relates to a titanium-sulfur powdery mildew prevention mixture. The mixture comprises the following ingredients: 3 to 5 parts of shell-core structure 70-nm titanium microspheres, 6 to 10 parts of sulfur and 30 to 50 parts of 27% lipid film. The mixture is processed into emulsion and mainly used for preventing pumpkin powdery mildew, pepper powdery mildew and strawberry powdery mildew. According to the mechanism of action of the titanium-sulfur powdery mildew prevention liquid, a fatty acid film is formed on a leaf to prevent the invasion of germs and prevent the growth diffusion of the germs on a disease part and to produce little heat under the sunlight so as to damage the protective film and cell wall of germs, infect the wound of the germs by the sulfur which is sensitive to the germs, to alleviate the activity and diffusion of the germs and to kill the germs are further killed, so that the titanium-sulfur powdery mildew prevention mixture is a physical prevention method; in addition, an effect on preventing sunscald caused by high-intensity sunlight and improving photosynthesis and hydrophilia can be achieved. The titanium-sulfur powdery mildew prevention mixture is a safe, environment-friendly, toxic-free and no-drug-fast powdery mildew prevention mixture.

The invention relates to a natural pharmaceutical composition as well as a traditional Chinese medicine composition containing the same and application of the natural pharmaceutical composition. The natural composition comprises the following raw materials in weight ratio: 40 to 200 parts of paeoniflorin, 1 to 20 parts of ferulic acid, 10 to 50 parts of hydroxysafflor yellow and 1 to 20 parts of protocatechuic aldehyde. The traditional Chinese medicine composition is a composition containing the natural pharmaceutical. The natural pharmaceutical composition and the traditional Chinese medicinecomposition have anti-aGvHD and anti-fungal infection effects, and are of great significance to improve the success rate of transplantation, improve the prognosis of patients, and increase the long-term survival rate of patients with hematological diseases, recipients of allogeneic hematopoietic stem cells and patients with fungal sepsis.

The invention relates to the technical field of pesticides, and particularly provides a pest and disease resistant composition containing hypersensitive protein, which comprises an active component Aand an active component B, wherein the active component A comprises Harpin protein; the active component B is selected from: amino-oligosaccharin, lentinan, nitenpyram, pymetrozine, imidacloprid, acetamiprid, dicyclanil, ethiprole, butene-fipronil, mandipropamid, fluopicolide, boscalid, fluopyram, tebuconazole, epoxiconazole, cyproconazole, tetraconazole, difenoconazole, hexaconazole, flutriafol,prothioconazole, penconazole, myclobutanil, flusilazole, propiconazole, pyraclostrobin, garlicin, and ethylicin, wherein the weight ratio of the active component A to the active component B is 100:1- 1:100; wherein the amino-oligosaccharin comprises amino-oligosaccharin with high molecular weight and amino-oligosaccharin with low molecular weight.

The invention discloses a control method for the nutrition deficiency yellows of cherries, and belongs to the technical field of fruit and vegetable cultivation. The control method for the cherry nutrition deficiency yellows achieves the purposes that operation is easy, cost is low, and the cure rate is high. According to the technical scheme, balanced fertilization of cherries is enhanced, different types of fertilizer is applied to cherry trees in the time period from the first ten days of September to the end of September, the time period before sprouting in the spring of the next year, the time period after blossom drop in spring and the time period after harvesting of cherries, the fertilizer utilization efficiency of cherries is maximum, the yellows caused by nutrition deficiency is eradicated, and the method can also be used for treating the nutrition deficiency yellows of cherries.

The invention relates to a traditional Chinese veterinary medicine for preventing and treating clostridial enteritis of piglets and a preparation method of the medicine. The medicine comprises the following components in parts by weight: 10-20 parts of coptis chinensis, 10-20 parts of scutellaria baicalensis, 5-15 parts of fructus forsythiae, 5-15 parts of honeysuckle, 10-20 parts of angelica sinensis, 10-20 parts of radix paeoniae alba, 1-5 parts of pseudo-ginseng powder, 5-15 parts of ginseng stems and leaves and 5-10 parts of liquorice. The Chinese veterinary medicine for preventing and treating clostridial enteritis of piglets belongs to natural pure Chinese medicine preparations, is high in inhibition on C-type clostridium perfringens, can treat clostridial enteritis of piglets, regulate viscera heat and improve the piglet immunity and body disease resistance, is safe, environmental-friendly and free from medicine residue, and has specific effects on clostridial enteritis of piglets in artificial infection blank models and clinical prevention and treatment experiment without side effect. The medicine is good in absorption in oral taking, simple in process and suitable for industrial production, and has the characteristics of simple use, convenience and rapidness; compared with other preparations, the medicine is suitable for prevention and treatment on clostridial enteritis of piglets in large-scale farms.

The invention discloses a green environmental-protection agricultural spraying oil and a preparation method thereof. According to the present invention, the light and wet hydrogenation distillate in the Jinan refinery heavy base oil bright oil project process is used as a raw material, and further precision fractionation-white clay refining-steam stripping treatment is performed to produce the environmental-protection agricultural spraying oil product, wherein the environmental-protection agricultural spraying oil meets the green environmental protection requirement, can meet the FDA certification requirement, and has advantages of high saturated hydrocarbon content, colorlessness, excellent light stability, excellent thermal stability, extremely low sulfur nitrogen content, no aromatic hydrocarbon, no harmful solvent, narrow distillation range, and good effect.

The invention discloses a method for controlling ichthyophthirius during trachinotus-ovatus cage culturing. The method includes the steps of observing and preventing, making of a netting device for controlling the ichthyophthirius in the mode that the trachinotus ovatus is soaked with fresh water, fresh water soaking, medicine treating, physical enhancing and the like. According to the method, the trachinotus ovatus is soaked with fresh water, cryptocaryon irritans loses the adsorption capacity in fresh water through sudden changing of osmotic pressure and is separated from a fish body, and if soaking time is long, polypide cells can be ruptured and died; after the ichthyophthirius is infected to the fish body and developed and matured, the ichthyophthirius is separated from a host after 3 days to 5 days, a cyst is formed and is subjected to asexual reproduction to be split into a plurality of larvae capable of infecting the fish body; if a cage is moved to a deep sea area with the good water quality and the high flowing speed, the cyst can be separated from the host to be taken away by water flow, and the controlling effect is better achieved. By means of the method, it can be achieved that the trachinotus ovatus is soaked with fresh water in a sea cage for controlling the cryptocaryon irritans; meanwhile, trachinotus ovatus cannot be directly caught in the whole course, and stress responses caused by catching are reduced.

The invention provides a large-scale nasonia artificial-feeding method. Compared with the prior art, the method has advantages that by 300Gry irradiation of 2-day-old musca domestica pupae, the Muscadomestica pupae unavailable for emergence are provided under the condition that pupa structures are undamaged, so that a step of adult musca domestica treatment is saved; by adoption of CO2 for anesthesia of nasonia, host musca domestica pupae and parasitic nasonia are separated after parasitism, escape in host replacement and parasitic wasp transferring processes is avoided, and efficiency improvement and cost saving are realized; after 10-day development, the host irradiated pupae are transferred to a refrigerating chamber at the temperature of 8-10 DEG C and in humidity of 75%-85%, development of nasonia is retarded under the condition of low-temperature constant-humidity storage, and centralized storage and release of parasitic nasonia are benefited. In addition, compared with frozen musca domestica pupae, the irradiated musca domestica pupae have the advantage that natural energy parasitic nasonia bred with the irradiated musca domestica pupae serving as hosts are high in female descendant yield, and high ecological benefits are achieved.

The invention discloses a spirodiclofen hot aerosol and a preparation method thereof. The spirodiclofen hot aerosol and the preparation method thereof are characterized in that: the spirodiclofen hot aerosol comprises the following raw materials in percentage by weight: 5 to 20 percent of spirodiclofen, 2 to 25 percent of surface active agent, 1to 2 percent of organic silicon defoamer, 0.5 to 2 percent of anti-freeze agent, 0.5 to 1 percent of antioxidant, and the balance of solvent. The spirodiclofen hot aerosol has the advantages of wide acarid killing spectrum, killing of egg and larva, strong contact poisoning action, long effective period, high utilization efficiency, no cross resistance with the conventional acaricide, and also suitability for preventing and controlling the harm of eotetranychus sexmaculatus riley to a rubber tree, and a high fruit tree, an ornamental plant, protected agriculture and the like.

The invention provides a water surface floatation sustained release medicament for prevention and cure of schistosomiasis, which is a granular sustained release medicament prepared from medicinal active constituent 5.0-60 wt%, solid state carrier material 30.0-90.0wt%, dispersing agent 0.1-10.0 wt%, coating agent 2.0-10.0 wt%, and hydrophobing agent 0.1-5.0 wt%.

The invention discloses washing powder for preventing and treating nose diseases. The formula comprises 2.10-4.30 parts of sea salt enriched in mineral substances and multiple trace elements, 0.10-0.20 part of a medical active ingredient and 0.60-1.20 parts of a buffer agent. By virtue of nasal wash, the washing powder disclosed by the invention can achieve effects of effectively alleviating and preventing damage of various traumas and inflammations on nasal mucosa and protecting the nasal mucosa, and is applicable to health washing of occupational inhalation dust and daily nasal nursing. Thewashing powder disclosed by the invention is based on a control principle of mineral substances, trace elements and biological components, and can achieve effects of eliminating nasal mucosa edema, promoting nasal cilium wiggle, protecting and repairing the nasal mucosa and cleaning and wetting the nasal cavity by virtue of deep washing in reference with modern pharmacological researches, so thatthe prevention and treatment effect is safely and effectively achieved.

The invention discloses lily bulb camellia nitidissima. The lily bulb camellia nitidissima is characterized by comprising 3g of burdock roots, 2g of platycodon roots, 1g of lophatherum herbs, 1g of camellia nitidissima and 3g of lily bulbs, wherein the burdock roots are used as a monarch drug of a prescription, the lily bulbs are used as a minister drug of the prescription, and the lophatherum herbs and the platycodon roots are used in combination and are both used as assistant drugs of the prescription. The lily bulb camellia nitidissima disclosed by the invention can invigorate the spleen, benefit the lung, clear heat and remove toxicity, and has the efficacy of resisting haze, resisting inflammation, resisting bacteria, enhancing immunity, removing toxicity, removing pathogenic bacteriaand resisting viruses to achieve the preventing and treating effect that strengthening vital qi and eliminating pathogenic factors are combined together.

The invention discloses an insect antifeedant 15beta-hydroxyklaineanone conducted in plants and application. The 15beta-hydroxyklaineanone has antifeeding activity on various insects and can be conducted in the plants; the antifeeding effect is better than that of the antifeedant applied to the surfaces of the plants; the 15beta-hydroxyklaineanone can be used for preparing a systemic insect antifeedant, is more convenient to use, is not influenced by interferences of an external environment and has a good application prospect; the insect antifeedant is separated and purified from natural plants and has low toxicity, no residues, no pollution and no nuisance on economic crops including various grains, melons and vegetables; a series of problems produced by the drug resistance caused by traditional insecticide in the prior art can be solved.

The invention relates to a Chinese herbal medicine preparation for preventing and curing mycotic diseases infected by beasts and birds. The Chinese herbal medicine preparation is prepared from the following bulk drugs in parts by weight: 10-40 parts of baical skullcap roots, 10-20 parts of rheum officinale, 10-40 parts of hawthorns, 10-30 parts of medicated leaven, 10-30 parts of silybum marianum and 10-30 parts of pine needle meal. The Chinese herbal medicine preparation provided by the invention has a strong mycete restraining and killing capability, can resolve toxicant, is liver protective and cholagogue, and cardiotonic and diuretic, and has good preventing and curing effects.

The invention relates to a composition for preventing and controlling cucumber downy mildew and a preparation method thereof. The composition comprises, by weight, 3-5 parts of fluoride ether bacteria amide, 1-3 parts of Bituo microbicide, 1-3 parts of Coptis chinensis extract, 1-3 parts of garlic oil, 3-5 parts of medical stone, 0.1-0.5 part of pesticide fertilizer sustained release agent, 5-10 parts of wetting agent, 3-10 parts of dispersant, 25-35 parts of kieselguhr and 15-20 parts of water. The composition is reasonable in prescription and simple to prepare, is a novel environment-friendly preparation, and has significant effect in cucumber downy mildew prevention and control. During cucumber production, various pests exist at the same time frequently, and mixed application of four kinds of microbicides can enlarge the control range, enhance prevention and control effect, lower toxicity of the agents, prolong appropriate period for spraying, save prevention and control cost, reduce application times, enhance adaptability and delay development of target drug resistance.

The invention discloses a lymantria dispar linnaeus glutathione-S-transferase GSTe4 gene, dsRNA and application in prevention and treatment of lymantria dispar linnaeus. The nucleotide sequence of thetransferase GSTe4 gene is as shown in SEQ ID No. 1, and the transferase GSTe4 gene encodes a protein with an amino acid sequence as shown in SEQ ID No. 2. The nucleotide sequence of the dsRNA of thetransferase GSTe4 gene is as shown in SEQ ID No. 3. The invention also discloses application of the lymantria dispar linnaeus glutathione S-transferase GSTe4 gene dsRNA in prevention and treatment orpreparation of lymantria dispar linnaeus prevention and treatment products. According to the method, physiological metabolism of the lymantria dispar linnaeus larvae to poplar secondary substances canbe affected, so that the growth and development duration of the lymantria dispar linnaeus larvae is prolonged, the weight of the larvae is reduced, the food conversion rate (ECD) is reduced, the purpose of weakening the vitality of the lymantria dispar linnaeus larvae is achieved, and finally the prevention and treatment effect is achieved.

The invention discloses a combined pollution site biological permeable reactive barrier which comprises a concrete base, a concrete top cover, a reactive barrier cavity and a reaction area filler, andthe reaction area filler comprises a phosphate-solubilizing bacillus mineralization layer, an anaerobic bacillus degradation layer and an aerobic bacillus degradation and oxygen release layer which are sequentially arranged in the seepage direction of underground water; the phosphate-solubilizing bacillus mineralization layer comprises phosphate-solubilizing bacillus, first quartz sand and phosphate ore powder; the anaerobic bacillus degradation layer comprises anaerobic bacillus, second quartz sand and first activated carbon; the aerobic bacillus degradation and oxygen release layer comprises aerobic bacillus, peroxide, third quartz sand and second activated carbon; heavy metal-organic matter combined pollution remediation can be achieved, and the purification capacity is high; the service strength can be elastically adjusted according to pollution degree changes, and the reactive barrier service life is prolonged; the combined pollution site biological permeable reactive barrier canbe used for preventing and treating high-risk sudden pollution sites.

The invention relates to a nano titanium rice planthopper control agent and a preparation method thereof. The nano titanium rice planthopper control agent comprises the following ingredients: 70 g of nano titanium microspheres with a shell-core structure, 100 g of silicone dioxide, 300 g of acetic acid, 300 g of honey, 80 g of monascus and 20 g of streptomyces microflavus. The action mechanism of the nano titanium rice planthopper control agent is as follows: burning rice planthopper larva and eggs to break the protective membranes and cell walls of the rice planthopper larva and eggs by using a photocatalytic reduction and oxidation function of nano titanium, and charging the alkaloid of the monascus and the streptomyces microflavus through the wounds to enter the cells of the larva or the eggs to break the cells. According to the nano titanium rice planthopper control agent and the preparation method thereof, the propagation of the rice planthopper is controlled by a physical method, harmfulness and toxic effects on human bodies are avoided, the resistance to drugs is not generated, and the nano titanium rice planthopper control agent is a safe, environment-friendly and non-toxic biological control agent.

The invention provides a method for preventing and controlling greenhouse tomato whiteflies in a greenhouse by using a photosynthetic high-fat film agent. The method is characterized by adopting the photosynthetic high-fat film agent, wherein the photosynthetic high-fat film agent is prepared from, by weight, the following components: 200 parts of dodecanol, 50 parts of hexadecanol, 8 parts of anemulsifier, 5 parts of a co-emulsifier, 40 parts of a thickener and 800 parts of water. After the photosynthetic high-fat film agent is diluted by adding water, greenhouse tomato crops are sprayed. The method for preventing and controlling tomato whiteflies in the greenhouse by using the photosynthetic high-fat film agent has the advantages of being simple, high in efficiency, environmentally friendly and free of pollution, and has the promotion effects of improving the quality of tomatoes and guaranteeing the quality of tomatoes and selling the tomatoes in advance.

The invention discloses a coal mine thick and hard sandstone roof water disaster and rock burst composite disaster treatment method which comprises the following steps: determining the height of a water flowing fractured zone, and then determining the position of a thick and hard sandstone aquifer within the height range of the water flowing fractured zone; determining a thick and hard sandstone aquifer mining influence range boundary R; determining the horizontal distance S1 between the lateral curtain of the boundary of the first mining working face and the lateral boundary of the goaf; the arrangement position of a first continuous lateral curtain is determined; a boundary lateral curtain and a first continuous lateral curtain are constructed through hydraulic fracturing grouting; lateral water interception and seepage prevention and normal stoping of the first mining working face are completed; lateral water interception and seepage prevention and normal stoping of the first continuous working face are completed; lateral water interception and seepage prevention are conducted on the second continuous working face; and so on, until the coal seam in the mining area or the panel is completely mined. According to the method, cooperative prevention and control of roof water disasters and rock burst disasters are achieved, the mine water inflow is greatly reduced finally, and the prevention and control effect of getting twofold results with half the effort can be achieved.

The invention discloses a prevention and control method for canker of pitaya, and belongs to the technical field of pitaya cultivation. The prevention and control method for the canker of the pitaya comprises the steps of S1, checking whether a pitaya tree has canker or not, and if the pitaya tree has canker, removing disease spots; S2, cleaning an orchard, cutting off diseased branches, then, spraying the whole pitaya orchard with an equal amount of Bordeaux mixture, wherein spraying is continuously conducted four times, and the spraying interval time is 20 days; S3, carrying out pesticide protection, wherein in the high-temperature and high-humidity season, pitaya and new branches on the pitaya tree are sprayed with pesticide for protection, the pesticide spraying frequency includes thatthe pesticide spraying interval is 7 days in a young fruit period, the pesticide spraying interval in other periods is 20-30 days, the sprayed pesticide comprises Baitai bactericide liquid, mixed liquid of prochloraz and mancozeb and mixed liquid of ethylicin and chlorothalonil, the three kinds of liquid are used in turn, and only one kind of liquid is sprayed each time. The prevention and control method for the canker of the pitaya has an excellent canker prevention and control effect.