87 results about "Gummy stem blight" patented technology

The invention discloses a Hami melon planting method, and belongs to the technical field of melon fruit planting. The method includes the following steps of field preparation, wherein loam or sandy loam facilitating water drainage is selected, a melon filed with the soil pH value of 7-8 is selected; soil preparation and frame erecting, wherein a shed frame is erected in a melon ditch over ridges, base fertilizers are applied to the inside of the melon ditch to form a melon ridge, and holes are dug in the melon ridge; seed selection and sowing, wherein seeds are sown in the holes in the step B after sterilization and insect prevention; planting, wherein when melon seedlings grow to have four true leaves, the melon seedlings are transplanted to the melon ditch in the step C for planting; melon field management, wherein melon vines grow upward along the shed frame, lateral branches of the melon vines are cut timely to guarantee that each melon vine only bears one fruit, and when setting fruits of the melon vines are as big as eggs, the fruits are supported through a string bag; harvest of proper ripe fruits. By means of the method, the problems that cracked melons and rotten melons are prone to being generated during hami melon planting, the melon seedings are prone to being infected by bacteria, gummy stem blight and anthracnose are caused, and quality of the melons is reduced can be solved.

The invention belongs to the technical field of crop genetic and breeding and biology and relates to an SSR (Simple Sequence Repeats) marker of a gummy stem blight resistant gene Gsb-4 of a melon resource PI482398; an SSR primer marker CMAT170a is utilized to amplify a breeding material or a variety DNA of the gummy stem blight resistant gene Gsb-4 of the melon resource PI482398 to obtain a 120 bp amplified fragment which is the SSR marker of the gummy stem blight resistant gene Gsb-4 of the melon resource PI482398; and the genetic distance from the SSR marker to a resistant gene is 5.14cM. In the invention, an SSR molecular marker tightly linked with the gummy stem blight resistant gene Gsb-4 of the melon is internationally obtained for the first time. The gummy stem blight resistance of the melon can be predicted by detecting the molecular marker and further a disease-resistant variety or a strain is quickly screened out for breeding the melons. The disease-resistant gene locus is convenient and quick to detect without being limited by environmental conditions.

The invention relates to a molecular marker method for a melon blight resistance gene, belonging to the field of biotechnology. There are four AFLP molecular markers that are linked to the gene for resistance to blight blight, the marker EcoRI-TG / MseI-CTC200 is a 200bp band; the marker EcoRI-AT / MseI-CTG90 is a 90bp band; the EcoRI-TC / MseI-CAG60 is a 60bp band band; the marker EcoRI-TG / MseI-CTA70 is a 70bp band; the linkage distances are 2.0, 6.0, 5.4 and 6.0cM, respectively. Detect whether PI 420145 and its derivative varieties (lines) contain the gene through the molecular marker method provided by the present invention, predict its resistance level to vine blight, improve the selection efficiency, and help to accelerate the selection of excellent vine blight-resistant melon varieties in my country It is used in the production process to identify the purity of muskmelon varieties resistant to vine blight.

The invention discloses a water-saving simple cultivation technology for crispy-flesh muskmelons and relates to the technical field of plant cultivation. The cultivation technology is suitable for spring creep cultivation of muskmelons and comprises irrigation, soil preparation and film mulching, field planting and transplant, applying fertilizers, pruning, pollination, and optimum period harvesting. Due to the fact that irrigation is performed before and after soil preparation and rich water dressing afterwards is omitted, under the condition that cultivation water volatilization is low in early spring, water requirements of the muskmelons during the whole growing period can be satisfied, manpower is saved, and diseases are reduced. Weeds are killed by covering silver and black mulching films, and soil temperature is increased. Natural pollination aided by insects is adopted, and manpower for artificial pollination is reduced. Compared with traditional cultivation technology, the cultivation technology has the advantages that water is saved by 40%, manpower is saved by 30%, diseases such as powdery mildew, gummy stem blight and virus disease can be relieved, and quality and commodity of the muskmelons are increased.

The invention relates to a rapid identification method of combined resistance to watermelon and melon wilt and gummy stem blight in the seedling stage. The method comprises immersing watermelon and melon seeds to be identified in warm water, carrying out disinfection and sowing, after the seedling has 3-5 main leaves, taking leaves, carrying out spray-inoculation with a didymella bryoniae spore suspension, washing roots of the seedling through water, dipping the roots in the didymella bryoniae spore suspension, transferring the seedling into a container with a matrix, carrying out culture at the room temperature, observing the disease cases at 3-7 days after inoculation, surveying cases of the watermelon and melon wilt and gummy stem blight, carrying out statistics on the morbidity of wiltand the morbidity and disease index of gummy stem blight, and carrying out classification prediction on the watermelon and melon wilt and gummy stem blight in the seedling stage according to the morbidity and disease index. The method can fast identify the watermelon and melon seed resources with wilt and gummy stem blight resistance based on the same type of the same plant, improve the identification efficiency and shorten the cycle and save test materials such as seeds and is suitable for fast screening of a large number of watermelon and melon antigens.

The invention discloses bacillus subtilis Pro1A2, a microbial agent thereof, a preparation method and application of the microbial agent in melon cultivation, and aims to solve the technical problemsthat the disease control effect is poor and continuous cropping obstacles are difficult to overcome in melon cultivation. The bacillus subtilis Pro1A2 is screened for the first time and preserved in the China Center for Type Culture Collection, and the preservation number is CCTCC NO: M 2017194. The microbial agent prepared from the bacillus subtilis Pro1A2 can have a good control effect on plantfungal diseases such as melon gummy stem blight, melon fusarium wilt, wheat take-all and rice blast, and also has a good effect on controlling bacterial diseases, such as melon bacterial fruit blotchbacteria, peach bacterial perforating bacteria, tobacco bacterial wilt bacteria, Chinese cabbage soft rot bacteria and tomato canker bacteria; the microbial agent can also overcome the obstacles of premature senility and continuous cropping of melons; the control is efficient, the use is simple, and NO environmental pollution is caused.

The invention discloses a method for obtaining a molecular marker linked with gummy stem blight resistance gene Gsb-2 and application of the molecular marker. An F2 group is constructed by PI 157082 carrying the gummy stem blight resistance gene Gsb-2 and a local susceptible variety of white skin crisp, gummy stem blight conidiospore suspension is artificially inoculated in a seedling period, and the molecular marker ISSR-57560 linked with the Gsb-2 is obtained through a simple sequence repeat (ISSR) technology. The molecular marker ISSR-57560 is used for detecting genotypes of melon varieties or strains taking PI 157082 as a parent, and can judge that whether the varieties or strains resist gummy stem blight. The invention overcomes the defects of high difficulty and longer period in breeding stable gummy stem blight resistant strains in the prior art, and provides a marker-assisted selection technology for gummy stem blight resistant breeding so as to reduce cost, improve selection efficiency, and quicken the progress of culturing good stem blight resistant melon strains.

The invention provides a cantaloupe cultivation method in clay regions; the method comprises the following steps: 1, planting soil selection; 2, cantaloupe variety selection; 3, ridging and soil working; 4, colonization; 5, vine hanging and cultivation; 6, dual-vine pruning; 7, post-planting management; 8, fruit management; 9, maturation and harvesting. The method uses connecting greenhouse to provide warming and rainproof effects, uses high ridging to provide waterproof and waterlogging preventing effects, uses biological bacterial manure to improve soil bacterium colony composition, uses dual-vine hanging to enhance planting vigor, thus effectively reducing gummy stem blight, die-back, downy mildew and powdery mildew diseases, so the cantaloupe can grow in local regions with health, thus realizing high yield and high quality effects.

A pesticide composition containing cytosinpeptidemycin and ningnanmycin for preventing and controlling plant virus diseases. The effective components cytosinpeptidemycin and ningnanmycin of the pesticide composition are compounded, and the others are auxiliary components. The pesticide composition comprises effective components of cytosinpeptidemycin and ningnanmycin in a weight ratio of 1-40:40-1; and the preparation contains 1%-80% of the effective components of cytosinpeptidemycin and ningnanmycin, and the balance is the auxiliary components allowed and acceptable by the pesticide. The dosage form of the pesticide composition provided by the invention is missible oil, a suspending agent, a wettable powder, a water dispersible granule, an aqueous emulsion and a microemulsion; the pesticide composition is mainly used for the control of virus diseases of tobacco, tomato, peppers, melons, rice, wheat, vegetables, fruits and beans, control of fungal diseases, such as powdery mildew, root rot, stalk rot, Rhizoctonia solani, blight, gummy stem blight, anthracnose and rice sclerotium disease, and control of bacterial diseases, such as rice bacterial leaf, Chinese cabbage soft rot and bacterial wilt of solanaceous crops.

The invention discloses a rapid identification method of melon gummy stem blight resistance, belonging to the plant disease resistance identification technical field. The method comprises steps as follows: (1) preparing a plant seedling; (2) preparing gummy stem blight bacteria spore suspension; (3) preparing a culture dish; (4) preparing a leaf; (5) spore inoculation; (6) thermal-insulation and moisturizing cultivation; and (7) investigation of state of disease: disease grade and disease index are investigated 3 to 5 days after inoculation and cultivation. The method has a clear technical basis, and is characterized by simple equipment, convenience and speediness as well as accurate judgment, and the like; compared with traditional identification methods, the method not only can save more than 10 days, but also can simplify the identification and inoculation conditions, lower the cost of identification, and improve the working efficiency. The method can be used in melon pathogenic bacteria pathogenicity determination or melon species resistance identification.

The invention provides a special primer for identifying gummy stem blight resistance of muskmelon and a molecular marking method. Specific to the problems existing in gummy stem blight resisting breeding work of the muskmelon, such as the defects of inaccuracy and large workload in manual inoculation of pathogenic bacteria and identification of gummy stem blight resistance, the method comprises the following steps: extracting a genome DNA (Deoxyribonucleic Acid) of a muskmelon sample to be detected to serve as a template; performing polymerase chain reaction (PCR) amplification by using a primer special for molecular marking; detecting an amplification product through electrophoresis. By adopting the SSR (Simple Sequence Repeat) molecular marker for identifying the gummy stem blight resistance and the special primer thereof, the aim of screening muskmelon materials resisting to the gummy stem blight and not resisting to the gummy stem blight can be fulfilled at the early growth period of muskmelon plants, and the molecular marker and the special primer have the advantages of accurate identification, freeness from limitations by infection conditions, adoption of readily-available raw materials and the like. Muskmelon auxiliary breeding is performed, so that the special primer has the advantages of definite target selection, saving in breeding time and labor cost, and increase of the breeding efficiency.

The invention discloses indole compounds and an application thereof in control of agricultural fungal diseases and belongs to the technical field of chemical agriculture. The compounds are mainly usedfor control of the fungal diseases and can effectively control fungal diseases of plants, such as banded sclerotial blight, bakanae diseases, bipolaris oryzae, gummy stem blight, wilt, botrytis cinereal, target leaf spot, alternaria alternata and the like. An agricultural fungal disease bactericide prepared from the compounds as an active ingredient has the characteristics of good control effect,wide spectrum, low toxicity, no residues, no pollution and no harm and is particularly beneficial to environment protection. Therefore, some bactericides can be prepared from the compounds to protectagriculture from invasion by fungal diseases.

The invention discloses a watermelon planting method, and belongs to the technical field of watermelon planting. The method includes the following steps of A, land selection, B, grafting, C, soil preparation and frame erecting, D, field planting, E, watermelon patch management and F, properly ripe harvesting. In the step of land selection, the watermelon land from the east longitude 110 degrees 3 minutes to the east longitude 111 degrees 22 minutes and from the northern latitude 22 degrees 37 minutes to the northern latitude 23 degrees 13 minutes is selected, and the soil Ph value of the watermelon land is six to seven. In the step of grafting, a cucurbit is used as the rootstock for grafting. In the step of soil preparation and frame erecting, a shed frame which stretches across ridges is erected in a watermelon ridge. In the step of field planting, when three main leaves grow on each watermelon seedling, the watermelon seedlings are moved to the watermelon ridge in the step C for field planting. In the step of watermelon patch management, daily irrigation, topdressing and disease and insect pest management are conducted on the watermelon seedlings, the temperature inside a shed is kept below 35 DEG C, and the humidity is 70%-80%. By the adoption of the watermelon planting method, the problems that watermelon cracking and rotting happen easily in watermelon planting, due to pathogenic bacterium infection, gummy stem blight and anthracnose can be caused, and the watermelon quality is lowered can be solved.

The invention discloses 1,2,4-triazole Mannich base derivatives containing substituted piperazidine, and a preparation method and application thereof. The structural formulae of the 1,2,4-triazole Mannich base derivatives containing substituted piperazidine are disclosed as general formulae I and II, wherein X, Y and Z are defined as Claim 1. The compounds have high bactericidal activity, have high in-vitro inhibition activity for ring rot of apple, sheath blight of wheat, scab of wheat, early blight of tomato and other plant pathogens, have favorable in-vivo control effects on corynespora leaf spot of cucumber, bacterial spot of cucumber, gummy stem blight of cucumber, downy mildew of cucumber, sclerotinia rot of cucumber and other plant fungi, and especially have special effects for bacterial spot of cucumber and Pseudoperonospora cubensis Rostov. The compounds disclosed as general formula I and general formula II have weeding activity. The 1,2,4-triazole Mannich base derivatives are suitable for integrated control of fungus attack and crop smothering on various crops.

The invention discloses a preparation method of a Streptomyces cacaoi biocontrol microbial agent for controlling apple tree fungal diseases and relates to the technical field of biological microbial agents. The preservation number of Streptomyces cacaoi is CGMCC No. 13080. The Streptomyces cacaoi biocontrol microbial agent has the advantages that the biocontrol microbial agent has an evident control effect on apple anthracnose and leaf blight and apple alternaria leaf spot and has a control effect on common apple tree leaf diseases and other apple tree diseases; the biocontrol microbial agent can completely replace a chemical control method and eliminate food potential safety hazard and is outstanding in control effectiveness on the common apple leaf diseases and outstanding in bacterium inhibiting spectrum broadness; in addition, the biocontrol microbial agent is high in fermentation activity, high in heat resistance, broad in bacterium inhibiting spectrum, capable of controlling common diseases such as cucumber gummy stem blight, cucumber seedling blight and tomato early blight of other fruits and vegetables, and the like.

The invention relates to a specific primer and kit for detecting melon gummy stem blight and a molecular detection method thereof. High specificity of the primer is verified. Didymella bryoniae can be fast and accurately detected by using the primer and the detecting method. The establishment of the detecting system is significant to early-stage fast detection of melon didymella bryoniae, soil didymella bryoniae group distribution detection, and prevention and cure of diseases.

The invention discloses a pesticide composition containing sedaxane. Effective active ingredients of the composition consist of sedaxane, tebuconazole and an effective ingredient C, wherein the effective ingredient C is thiamethoxam or imidacloprid, the weight ratio of sedaxane to tebuconazole to the effective ingredient C is (1-80): (1-80): (1-80), and the composition is made into a suspended seed coating. The composition disclosed by the invention can be used for preventing and treating a variety of underground pests and harmful bacteria and has an obvious synergistic effect, the control spectrum is enlarged, and the composition has relatively high activity to pests and harmful bacteria on wheat, vegetables, cotton, peanuts, watermelon and rice; the pests consist of aphids, midge, root-knot nematodes, wireworms, grubs, cutworms, thrips, mole crickets, athetis lepigone and borers, and diseases consist of sheath blight, bakanae disease, gummy stem blight, rust disease, stripe rust, root rot, head blight, powdery mildew, anthracnose, head smut and full rot. The composition has a sustained-release effect, the dosage of pesticides is reduced, and the composition is safe to human and livestock, is free from damage caused by chemicals and is good in environmental compatibility.

The invention belongs to the technical field of vegetable disease resistance molecular marker development and molecular marker assisted breeding, particularly relates to development and application ofa muskmelon vine blight resisting molecular marker, and provides a novel molecular marker and an assisted selection method for high-throughput screening identification and backcross breeding of vineblight resistance of muskmelons. The invention discloses two molecular markers which are developed on the basis of single nucleotide polymorphism linked with resistance to gummy stem blight, and are used for identifying vine blight resistance of the muskmelons. The invention also discloses application of the molecular markers, and the application is used for identification of vine blight resistinggermplasm of the muskmelons and auxiliary selected breeding of progenies of the muskmelons.

The invention discloses a disease-resistant organic fertilizer used in organic agricultural industrial parks and a preparation method thereof. The organic fertilizer is prepared by adding an organic fertilizer fermentation liquor, a liquid actinomycete agent, ascorbic acid, a synergistic microelement fertilizer, a soil water retaining agent, and the like by taking livestock and poultry manures, ground crop straws and rape seed cake as the main raw materials. Compounded with the ascorbic acid, the organic fertilizer can achieve the effects of boosting the immunities of crops, improving the disease and insect pest resistance capacities of the crops, especially reducing the disease and pest risks caused by continuous cropping of the crops and effectively resisting the common diseases of the crops, such as blights, greensickness, rhizoctonia solani, root rot, damping-off, anthracnose, sooty mold, gummy stem blights, gray mold and black roots, so that the usage amount of chemical pesticides is reduced, and the effect of simultaneous application of pesticides and fertilizers is achieved.

The present invention relates to an oxdiazole compound containing a pyrazole ring, and a preparation method thereof. The oxdiazole compound of the present invention has a structure represented by a formula (I), wherein R is a substituted phenyl, the benzene ring on the substituted phenyl is monosubstituted or polysubstituted, the substituted group is independently selected from one of H, C1-C6 alkyl, halogen, cyano, and nitro. The oxdiazole compound of the present invention has characteristics of simple preparation and excellent bactericidal activity, and can be used as a bactericidal agent for prevention and control of cucumber tan disease, cucumber bacterial angular leaf spot disease, cucumber gummy stem blight, cucumber downy mildew, and cucumber sclerotium disease. The present invention further relates to a bactericidal agent containing the compound.

The invention belongs to the field of farm chemical fungicide and particularly relates to a water suspending agent containing difenoconazole. The water suspending agent comprises difenoconazole, bismerthiazol, a surfactant and water, wherein the weight content of difenoconazole is 1-20%, and the weight ratio of difenoconazole to bismerthiazol is 5:1-1:5. The water suspending agent further comprises other functional promoters. The composition is mainly used for preventing and treating watermelon gummy stem blight, pepper anthracnose, strawberry powdery mildew, grape anthracnose, blacking disease, citrus scabs, rice bacterial leaf blight, cucumber brown patches and the like. The composition has the advantages of being obvious in synergism, broad in bacteria killing, long in effect persisting time, safe for crops and the like.

The invention relates to the technical field of pesticide preparation, in particular to a botanical pesticide and a preparation method thereof, and overcomes the defect that no efficient and low-toxicity botanical pesticide for diseases such as gummy stem blight and brown streak of cucurbitaceous crops exists in the prior art. The method comprises the following steps: S1, extracting; S2, concentrating; S3, extraction; S4 mixing. The invention aims to provide the botanical pesticide and the preparation method thereof, natural components are used as main raw materials, and no medium-high toxicity chemical synthetic component is added. The preparation method comprises the following steps: mixing oleander flower extract, radix sophorae flavescentis extract and cnidium lactone; one or more of polyoxin and spinosad can also be added, and the developed compound plant type medicament has a synergistic effect, has the characteristics of safety, broad spectrum and high efficiency, is suitable for pests such as melon aphids and plutella xylostella, and can also be used for effectively preventing and treating diseases such as melon gummy stem blight and rice brown streak.

The invention discloses a grafting method of pumpkin and Hami melon, and relates to the technical field of agricultural planting. The grafting method comprises the following steps: selecting a variety, treating seeds, breeding Hami melon seedlings, breeding pumpkin seedlings, and performing grafting and post-grafting management. The grafting method provided by the invention can be used to enhancethe antibacterial ability of grafted seedlings, promote fast healing of grafting wounds, and increase the grafting survival rate. After the seedlings obtained through the grafting method are planted,the incidence of soil-borne diseases such as gummy stem blight, blight and the like is low, the yield is high, the continuous cropping obstacle of Hami melon is overcome, and the economic benefit is increased.

The invention discloses a bactericidal composition containing active ingredients bellkute and triflumizole and application of the bactericidal composition, and relates to bactericidal composition having synergistic effect. The bactericidal composition is applied to the chemical protection field of agricultural plants. The weight ratio of bellkute to triflumizole is 1: 100 to 100: 1; and the total weight of bellkute and triflumizole accounts for 5-90% of the weight of the bactericidal composition. The bactericidal composition provided by the invention is used for cereals, fruits, vegetables and commercial crops, and applied to prevention and treatment of gray mold, powdery mildew, rust disease, stalk break, stem wilt, gummy stem blight, anthracnose, ring spot, scab, leaf spot disease, alternaria leaf spot, fruit soft rot, penicilliosis and penicillium digitatum. The bactericidal composition provided by the invention is used for protecting plant propagating materials and plant organs grown later. The composition provided by the invention is wide in antibacterial spectrum, capable of functioning in both prevention and treatment, good in prevention and treatment effect for plant diseases and also capable of retarding or avoiding pathogenic bacteria from having medicine resistance.

The invention discloses application of a compound paeonol as an agricultural bactericide. The compound is used as a bactericide for preventing and treating agricultural fungal diseases, and can effectively prevent and treat crop diseases such as fusarium wilt, gray mold, gibberellic disease, gummy stem blight and the like. The agricultural bactericide prepared from paeonol as an active component has the characteristics of good prevention and treatment effect, broad spectrum, low toxicity, no residue, no pollution and no public nuisance, and is particularly beneficial to environmental protection.

The invention discloses an application of a compound magnolol as an agricultural bactericide. The compound is used as a bactericide for preventing and treating agricultural fungal diseases, and can effectively prevent and treat crop diseases such as sclerotiniose, banded sclerotial blight, gray mold, gibberellic disease, anthracnose, bakanae disease, gummy stem blight, fusarium wilt and verticillium wilt. The agricultural bactericide prepared from magnolol as an active component has the characteristics of good control effect, broad spectrum, low toxicity, no residue, no pollution and no public nuisance, and is particularly beneficial to environmental protection.

The invention discloses an application of cinnamate compounds in prevention and control of fungal diseases of crops. The cinnamate compounds have one of chemical structures represented by formulas shown in the description. The cinnamate compounds have strong antibacterial activity, have a wide antibacterial spectrum on pathogenic fungi of crops, are safe to crops in order to avoid phytotoxicity, and have better or equivalent field pesticide effect than a control compound 3, 4-dimethoxycinnamate when used to prevent and control fungal diseases of crops, such as powdery mildew, damping-off, rot,gummy stem blight, anthracnose, white rot, leaf blight, late blight, gray mold, phytophthora, Fusarium Patch, early blight, blight, full rot, pythium rot, dry rot, ring rot, banded sclerotial blightand Sclerotinia sclerotiorum.

The invention provides a compound bactericide containing bronopol and amino-oligosaccharin and a preparation method thereof, the mass ratio of bronopol to amino-oligosaccharin is 25-60: 0.4-0.8. The bromonol and the aminooligosaccharide have synergistic effect within a certain compound proportion range, have chemical protection effect on crops in the actual use process, and obviously improve the prevention and control effect of the crops on bacterial diseases compared with single dose alone, the compound bactericide has wide sterilization range, is used for prevention and control of melon bacterial gummy stem blight, field melon bacterial angular leaf spot and most bacteria and fungi on vegetables, and has obvious prevention and treatment effects on pseudomonas, acidovorax, xanthomonas, erwinia and coryneform bacteria.

The invention relates to a sterilization composition containing picoxystrobin and difenoconazole and application of the composition. According to the composition, the weight part ratio of picoxystrobin to difenoconazole is (40 to 1) to (1 to 40) and the weight percent of active ingredients is 1-90%. The composition has a synergistic effect by compounding picoxystrobin with difenoconazole and is used for preventing and controlling various diseases such as leaf spot disease, anthracnose, downy mildew, brown blotch, gummy stem blight, rice false smut and rust disease on various crops such as bananas, apples, paddy rice, watermelons and hot peppers.

The invention belongs to the field of pesticide compositions, and particularly relates to a bactericidal composition containing indole hydrazide. The effective components of the bactericidal composition comprise indole hydrazide and hymexazol in a weight ratio of 50: 1 to 1: 50. The bactericidal composition can also be processed into a pesticide preparation. The bactericidal composition comprisesadjuvants and effective components, wherein the mass percentage content of indole hydrazide and hymexazol in the composition is 1%-80%, with the balance being the pesticide effective components. The pesticide composition has a special effect of preventing and treating fungal downy mildew and fusarium wilt of cucumber, and can also be used for preventing and treating plant diseases caused by infection of other fungi, e.g., Chinese cabbage root rot, cotton damping-off, tomato gray mold, pepper fungal anthracnose, rice sheath blight disease, wheat scab, green Chinese onion purple spot, eggplant sclerotinia sclerotiorum, watermelon gummy stem blight and tomato late blight. The invention has the characteristics of high efficiency, low toxicity and low residue, and is especially beneficial for the production of green food.