76results about How to "Solve the disease problem" patented technology

The present invention discloses a solid soiless cultivation organic substrate and organic solid fertilizer for use by this substrate. Said substrate mainly is composed of organic substrate material and inert substrate material, the solid fertilizer mainly is composed of dung fertilizer and cake fertilizer and inorganic fertilizer. The present invention also discloses soilless cultivation method using said solid substrate. The present invention can be used in commercial production of vegetables. It is simple in raw material compoistion which is broad in source. It is also simple in technology, low in cost, no pollution to environment etc.

The invention discloses a water-rich weak surrounding rock long-and-big tunnel construction method. The method includes that a tunnel inclined shaft is arranged on one side of a main tunnel of a tunnel to be constructed, the main tunnel is divided into a tunnel entry section, a tunnel exit section and a middle connecting section connected between the tunnel entry section and the tunnel exit section, the middle connecting section is divided into an inclined shaft assisting construction entry section and an inclined shaft assisting construction exit section, and each of the tunnel entry section, the tunnel exit section, the inclined shaft assisting construction entry section and the inclined shaft assisting construction exit section is divided into multiple sections for construction. A construction method of each section includes: step 1, performing geological forecasting in advance, and when a debris flow formation exists ahead, entering a step 2, or else, entering a step 3; step 2, performing stability control construction; step 3, determining a primary supporting scheme; step 4, excavating the tunnel, and performing primary supporting construction; step 5, performing secondary lining construction on the tunnel. The water-rich weak surrounding rock long-big tunnel construction method is simple in step, reasonable in design, simple and convenient to construct, good in using effect, capable of meeting construction requirements of water-rich weak surrounding rock long-and-big tunnels, short in construction period and safe in construction process.

The invention relates to a novel crop seeding raising method, belonging to the field of crop seeding raising. The seedling raising method is characterized in that a seedling raising matrix or porous seeding raising hole trays filled with the seedling raising matrix is / are placed on a slope nursery bed, which has a certain inclination angle and covered or not by a barrier material on the surface, a water and fertilizer supplying facility is erected at the high end of the slope nursery bed, water and fertilizer are provided for the seedling raising matrix by utilizing the inclined guiding action of the slope to promote the crop seeds transplanted in the seedling raising matrix to germinate, root and grow, seeding raising management is carried out, and seedlings are lifted and transplanted when the seedlings achieve proper transplanting seedling age. By adopting the method, the water and fertilizer are agilely managed, the inland inundation or drought is prevented, the disease and pest are reduced, the seedling forming rate is high, and seedling domestication is carried out by inverting the seedling raising hole trays or the nursery bed, thus the strong seedlings are effectively cultured and the seedling recovering stage is shortened; and the cultured seedlings have the characteristics of flourishing root systems, strong and trim seedlings, strong viability, few or no disease plants, short seedling recovering stage, convenience for seedling taking and seedling transport for transplanting, simplicity in operation, labor saving, cost saving, high survival rate and the like.

The invention discloses a high-yield cultivation method of fresh gingers. The high-yield cultivation method comprises following steps of: firstly, preparation of a soil conditioner, secondly, preparation of special-purpose insecticide; thirdly, preparation of soil and application of fertilizers; fourthly, seed selection and germination; fifthly, cultivation in high ridges; sixthly, cultivation and management; and seventhly, harvest and storage. The high-yield cultivation method of fresh gingers has following beneficial effects: a pest control problem mainly existing during a plantation process of fresh gingers is solved; fresh gingers are planted in a standardized manner; quality and yield of produced fresh gingers are enhanced; and the high-yield cultivation method is suitable for promotion and application of a large-scale plantation garden of vegetables.

The invention discloses a method for breeding earthworms in a greenhouse. The method comprises the following steps: a place is selected to build an ecological greenhouse, wherein a ventilating system, breeding ponds and a vaporous water spray device are arranged in the greenhouse; a breeding feed is a mixture of fermented corn straw and cow dung, the fermented feed is put into the breeding ponds, a layer of loose soil with good air permeability is laid, 10000-15000 young earthworms are placed in each breeding pond, during daily management, the humidity of the breeding soil is controlled to be 20-70%, and the environment temperature is controlled to be 15-25 DEG C. According to the invention, a greenhouse breeding technology is adopted, the problems of diseases caused by environment temperature change can be effectively avoided during the breeding process, and a relatively stable growing environment is provided for earthworms; meanwhile, the breeding temperature is controlled to be 15-25 DEG C, so that the breeding period is shortened greatly; breeding in different ponds is adopted, so that a farmer can manage conveniently, the phenomenon that earthworms fleeing to other places during breeding is avoided, epidemic diseases can be effectively avoided, and breeding benefits of the farmer are increased.

The invention relates to a method capable of effectively preventing and treating leaf spot of rhizoma paridis yunnanensis and belongs to the technical field of plant protection and Chinese medicinal plant cultivation. The method is used for preventing and treating leaf spot of rhizoma paridis yunnanensis, mainly takes agricultural prevention measures and secondarily adopts medicaments for prevention and treatment. The method includes the following steps: planting a disease-resistant variety, enhancing the management of fertilizer water, improving permeability of fields, clearing ill and fadingleaves in time, conducting rational crop rotation and mainly applying low-toxicity and less-persistent pesticide for chemical prevention and treatment in a land parcel easily attacked and severely affected by diseases. Shown by typical survey adopting the technology, the economical loss of farmers can be redeemed by 30-40 percent in the equal situation. The method has simple, convenient operation, low cost and the advantages of effectively solving the leaf spot problem of rhizoma paridis yunnanensis, being capable of ensuring the quality and safety of medicinal materials while adding the output of rhizoma paridis yunnanensis and being prominent in economic and social benefits, and is widely suitable for planting medicinal materials of rhizoma paridis yunnanensis.

The invention relates to a UHPC (ultra-high performance concrete) poured orthotropic steel bridge deck combination structure and a manufacturing method thereof. The UHPC poured orthotropic steel deck combination structure comprises a bottom steel bridge deck, shear nails, a reinforcing mesh and an UHPC pavement layer, wherein the shear nails and the reinforcing mesh are arranged on the steel bridge deck, the UHPC pavement layer is poured by UHPC and wraps the shear nails and the reinforcing mesh, and the UHPC pavement layer and the steel bridge deck form the bridge deck combination structure. Compared with existing steel bridge deck pavement, the strength, toughness and durability of the steel bridge deck combination structure can be remarkably improved, curing condition requirements are low, steam curing and pressure forming are omitted, construction technology is simple and convenient, construction quality is easily controlled, the tension resistance and the shear resistance of the pavement layer are effectively enhanced by the shear nails and the reinforcing mesh, the problem of diseases caused by asphalt pavement is solved, and damage to the pavement layer such as cracking, upheaval, displacement and pit slots is avoided.

The invention discloses a method for treating a shallow disease of an expansive soil slope. The method comprises the following steps of: 1, excavating the slope into different levels; 2, constructing a protection foundation by using cement mortar: uniformly painting a cement mortar layer on a slope base of each level of the excavated multi-level stepped slope to form a slope base protection foundation; 3, treating the slope level by level: treating the multi-level slope of the multi-level stepped slope level by level from top to bottom or from bottom to top, wherein for any level of the slope Ai, the treatment process comprises the following steps of: laying and fixing waste tires; overlaying a mixed material; covering geogrids; and paving non-woven fabrics; and 4, post-stage curing: curing the mixed material according to a conventional herbaceous plant curing method. The method for treating the shallow disease of the expansive soil slope has the advantages of novel and reasonable design, simple and practical operation, low cost, good treatment effect and capacity of effectively solving the problem of shallow diseases of the expansive soil slope.

A takifugu obscurus parent and scatophagus argus pond greenhouse overwintering mixed culture method is characterized in that a land with a flat floor is selected, the depth of a pond is more than 2m, a steel wire rope flexible plastic film greenhouse is built above the pond, takifugu obscurus parents are transferred into the pond greenhouse for overwintering when the water temperature of an external pond is reduced to 13 DEG C in November, scatophagus argus overwintering stocking time is similar to takifugu obscurus overwintering stocking time, a takifugu obscurus feedstuff feeding method is as same as an external pond conventional culture method, feeding of commercial feedstuff is omitted if aquatic macrophytes are placed in the scatophagus argus pond, water change is avoided when the water temperature of the pond in the greenhouse is lower than 12 DEG C, water is changed once every three weeks when the water temperature of the pond in the greenhouse is higher than 12 DEG C to 15 DEG C, the water temperature of the external pond is kept higher than 15 DEG C in April every year, takifugu obscurus and scatophagus argus are dragged out of the greenhouse through a net and cultured in the external pond, the scatophagus argus is firstly picked out and placed into another net cage when the net is dragged, the takifugu obscurus parents are directly transported, and the scatophagus argus is dragged out of the greenhouse or cultured in the pond after the takifugu obscurus is dragged out of the pond through the net.

The invention discloses a method for effectively preventing and controlling the leaf spot disease of radix pseudostellariae. The method includes the following operation steps that 1 part of a suspension agent contains 15-25% of pyraclostrobin and 15-25% of fluxapyroxad according to weight ratio, and pyraclostrobin and fluxapyroxad are mixed into the suspension agent; the suspension agent is diluted by 2000-4000 folds; the suspension agent is evenly sprayed to leaf surfaces of radix pseudostellariae plants, spraying is performed one time every other 10-15 days, and the suspension agent is continuously used 3-4 times. According to the method, chemical prevention and control are combined with agricultural measures so that the leaf spot disease of radix pseudostellariae can be effectively prevented and controlled, the preventing and controlling effect can be more than 90%, the leaf spot disease problem of radix pseudostellariae is effectively solved, medicinal material quality and safety can be guaranteed while the yield of radix pseudostellariae is increased, and the method is widely suitable for growing radix pseudostellariae medicinal materials and can be applied and popularized.

The invention relates to an ultra-high performance concrete slab seam connecting structure and a construction method thereof. The ultra-high performance concrete slab seam connecting structure comprises two ultra-high performance concrete slabs positioned in the same plane, wherein a cast-in-situ seam is left in the middle between the two ultra-high performance concrete slabs; a high-strength steel wire mesh is arranged in each ultra-high performance concrete slab; one side, facing the cast-in-situ seam, of the high-strength steel wire mesh penetrates out from the lateral part of the same sideof the ultra-high performance concrete slab and extends into the cast-in-situ seam; the extending-out parts of the high-strength steel wire meshes at two sides are connected through a high-strength steel wire mesh sheet; and an ultra-high performance concrete slab seam plate for connecting the ultra-high performance concrete slabs at two sides is cast in the cast-in-situ seam. The ultra-high performance concrete slab seam connecting structure has the advantages that the stress is reasonable; the strength is high; the structure dead weight can be greatly reduced; the mechanical property is excellent; the durability is high; the problem of damage of concrete slabs and concrete slab seam regions is effectively solved; the capability of high strength, high toughness and crack resistance of the ultra-high performance concrete is fully realized; and great practical values and good economic benefits are realized in the engineering practice.

The invention discloses a planting method capable of improving the quality of wheat. The planting method comprises the following steps: irrigating water and carrying out plowing for the first time; sterilizing and disinfecting soil by utilizing high-temperature vapor; measuring the pH value of the soil; applying a wheat base fertilizer for the soil; carrying out plowing for the second time, and conducting mulching; subjecting wheat seeds to microwave treatment; dressing the wheat seeds with a seed dressing agent which is a traditional Chinese herbal agent, and allowing the wheat seeds to germinate; planting the wheat seeds into the soil; managing a field, i.e., topdressing the wheat with a fertilizer; spraying the wheat with a traditional Chinese herbal agent before a wheat flowering period so as to prevent diseases and pests for the wheat; allowing a warm air blower to slightly blow the wheat in the wheat flowering period; and spraying the wheat with the traditional Chinese herbal agent again after the wheat flowering period. The method provided by the invention can improve the germination rate of seeds, reduce diseases and pests of the wheat, and improve the yield of the wheat.

The invention discloses a preparation method of Chinese herbal medicine compound fermented feed for procambarus clarkia. The feed is prepared from a fermentation substrate, a bacterial agent and a Chinese herbal medicine compound extract by a multiple fermentation process; the mass ratio of the bacterial agent, the Chinese herbal medicine compound extract and the fermentation substrate is (0.2-5):(0.2-4):50000, and the fermentation substrate comprises, in parts by mass, 5-15 parts of soybean meal, 30-40 parts of wheat, 30-40 parts of corn, 10-15 parts of bran, 1-5 parts of molasses, 1-3 partsof compound premix and 10-20 parts of water; and the Chinese herbal medicine compound extract comprises, in parts by mass, 15-20 parts of yucca, 15-20 parts of cortex eucommiae, 15-20 parts of radix astragali, 10-15 parts of garlic, 10-15 parts of common fenugreek seeds and 10-15 parts of folium mori. The number, activity and survival time of intestinal probiotics in the product are guaranteed, the Chinese herbal medicine compound extract and the compound premix with specific composition have characteristics of micro ecological preparation and functions of antibiotic-like growth factors, the immunity and disease resistance of the procambarus clarkia can be significantly enhanced, the disease incidence can be decreased, and the feeding quality can be improved.

The invention discloses an existing old small bridge and culvert corrugated steel reinforcing construction method. The method comprises the steps: S1, carrying out on-site survey setting-out; S2, carrying out corrugated steel component manufacturing and entry inspection; S3, excavating the foundation of the old small bridge; S4, constructing a solid wall type abutment on the foundation;S5, pre-burying channel steel connecting pieces on the top surface of the foundation or the abutment;S6, carrying out corrugated steel plate piece assembling and arch installation; S7, carrying out anticorrosivecoating on the inner side of the corrugated steel plate on site; and S8, filling the space between the corrugated steel plate arch and the original bridge with concrete. The method has the advantagesof being safe and rapid in construction, short in construction period, environmentally friendly in construction, low in construction cost, remarkable in benefit, capable of effectively solving the problem that diseases are gradually generated in the using process of existing old small bridges and culverts and the like.

The invention discloses an ultra-high-performance concrete-partial profile steel combined beam unit. An ultra-high-performance concrete beam comprises a top plate, a web and a bottom plate, half notches are formed in the ends of the top plate, a top plate reinforcing steel plate which is arranged in the longitudinal direction of a bridge is arranged at each of the half notches, one ends of the topplate reinforcing steel plates are fixedly arranged in the top plate, and the other ends of the top plate reinforcing steel plates extend out of the end of the top plate, a web reinforcing steel plate which is arranged in the longitudinal direction of the bridge is arranged in the web, one end of the web reinforcing steel plate is fixedly arranged in the web, and the other end of the web reinforcing steel plate extends out of the end of the web. The invention further provides an ultra-high-performance concrete-profile steel combined beam unit. The invention further provides a combined beam formed by connecting the two beam units. By means of the ultra-high-performance concrete-partial profile steel combined beam unit or the ultra-high-performance concrete-profile steel combined beam unit,the connection structure at the joint of the adjacent beam units is simple and reasonable, and the stress performance is excellent.

The invention relates to a tunnel corrugated steel dual-layer primary lining supporting method and structure. The method comprises the following steps that firstly, the position in front of a tunnel face is subjected to ahead pre-reinforcing; secondly, according to the surrounding rock large-deforming condition, a reserved deforming amount is set, and the tunnel excavated section is determined; thirdly, splicing of first-layer corrugated steel preliminary bracing is carried out; fourthly, the gap between the corrugated steel and the surrounding rock is subjected to backfill grouting filling, and an anchor rod drilling machine is used for constructing a system anchor rod; fifthly, an inverted arch second lining and inverted arch backfill are subjected to cast-in-place operation, a second-layer corrugated steel primary lining assembly joint and a second lining assembly joint are reserved; sixthly, assembly of second-layer corrugated steel preliminary bracing is carried out, and groutingfilling of the gap between the first-layer corrugated steel preliminary bracing and the second-layer corrugated steel preliminary bracing can be finished; seventhly, second lining pouring or assemblyand backfill grouting of a second lining precast pipe piece can be carried out; and eighthly, a road surface, drainage ditches on the two sides and cable ducts on the two sides are constructed. Compared with the prior art, the method has the advantages that full-section rapid mechanical and intelligent building are achieved, and construction efficiency is improved.

The invention belongs to the technical field of plant cultivation, in particular to a floating seedling method for kiwifruit rootstocks. The floating seedling method for the kiwifruit rootstocks comprises the following steps: A, constructing a seedling shed; B, disinfecting the seedling shed and a floating seedling plate; C, pretreating kiwifruit seeds; D, filling the plate with a substrate; E, sowing; F, putting the floating seedling plate into a tank; G, conducting seedling management; H, applying fertilizer. The method has the characteristics of being less in substrate consumption and less in seed consumption, saving plenty of labor and reducing cost, being simple in process, convenient to operate, high in survival rate of transplantation and suitable for factory production, and the like.

The invention discloses a bactericidal composition containing fluxapyroxad and zinc thiozole. The bactericidal composition comprises active ingredients such as fluxapyroxad and zinc thiozole, and chemical additives, the weight ratio of the fluxapyroxad to zinc thiozole is (1 to 10) to (10 to 1), and the total weight of the fluxapyroxad and zinc thiozole in the composition is 1 to 95 percent; according to real application requirement, the bactericidal composition can be prepared into one of water emulsion, micro-emulsion, suspension agent, wettable powder and water dispersible granules and is used for preventing rhizoctonia solani. The pesticidal effect of the bactericidal composition can be played rapidly and lasts for a long time, the application cost is low, the use is convenient, time and labor are saved, and the economic benefit and social benefit are vast when the bactericidal composition is popularized to use.

The present invention discloses a method and an apparatus for monitoring the number of rolling passes of a roller and determining whether the rolling is qualified. The present invention belongs to thefield of road construction, and particularly relates to a method for monitoring the number of rolling passes of a roller and determining whether the rolling is qualified. The method comprises: S1: determining a range of each lane of a road section constructed by using a roller, and dividing each lane into cells; S2: calculating the number of rolling passes of each cell; S3: determining whether the number of rolling passes of the cell is qualified; and S4: determining whether the rolling overlap width between adjacent lanes meets the requirements. According to the technical scheme provided bythe present invention, the number of rolling passes of cells of each lane is monitored in real time, and the number of rolling passes of the lane is monitored to prevent missing rolling or excessive rolling and improve the rolling quality.

The invention provides an anti-freezing structure for a tunnel project in a permafrost region. The structure comprises a plurality of anti-freezing tubes and a plurality of cold and heat exchange tubes. A plurality of anti-freezing tubes are transversely arranged in a tunnel lining structure in an arch shape and are located between a preliminary support and a waterproof layer, a plurality of anti-freezing tubes are longitudinally arranged along a tunnel, and a gap is arranged between two adjacent anti-freezing tubes. The plurality of cold and heat exchange tubes are radially distributed alonga cross section of the tunnel, one end of each of the cold and heat exchange tubes communicates with one side of each of the anti-freezing tubes close to the waterproof layer, and the other end passesthrough a surrounding rock melting circle to extend into a deep frozen soil area. Both the anti-freezing tubes and the cold and heat exchange tubes are closed structures and are loaded with mediums for cold heat exchange. According to the anti-freezing structure for the tunnel project in the permafrost region, the cold and heat exchange between the deep frozen soil area and the surrounding rock melting circle can be quickly achieved, therefore, the ice melting phenomenon of a surrounding rock is improved, and the surrounding rock can be kept frozen to solve the problem of diseases in the tunnel project of the permafrost region.

The invention discloses a method for preventing and curing prawn virus damage and improving prawn farming yield. The method is characterized by comprising the steps of pond disinfection treatment, natural bait cultivation, mixed cultivation, fertilization and pond water quality management. According to the method, dissolved oxygen is improved ceaselessly and substantially, hazardous substances like ammonia nitrogen, hydrogen sulfide and nitrite in water can be effectively degraded, microorganism ATP bacteria can maintain pond ecological environment, and it can be guaranteed that farming water quality is friendly to environment; immunoglobulin of yolk is fed reasonably to stimulate prawn organisms repeatedly, and the anti-virus and antibacterial ability of hepatopancreas can be improved; thus, the anti-virus and antibacterial ability of the whole organisms can be greatly improved, the development of aquaculture can be promoted, farmers can be driven to get rich, and rural ecological environment can be improved.

The invention discloses a low-carbon composite biological organosilicon magnesium potassium fertilizer which is prepared from the following raw materials in percentage by weight: 60-70% of organosilicon fertilizer base material, 5-10% of magnesium sulfate, 10-15% of calcium superphosphate and 10-15% of potassium sulfate, totaling 100%. The low-carbon composite biological organosilicon magnesium potassium fertilizer disclosed by the invention can reduce the pesticide consumption, enhance the yield of the agricultural product, improve the quality of the agricultural product, and eliminate the soil hardening and pollution caused by the fertilizer and pesticide, thereby improving the soil, enhancing the soil productivity and implementing high quality and yield increase of the agricultural product.

The invention discloses a karst stratum tunnel secondary lining renovation construction structure and method based on a sleeve lining. The structure comprises a grouting anchoring structure for supporting a tunnel section arch wall needing to be renovated and a strengthening sleeve lining for strengthening the tunnel section arch wall needing to be renovated. The strengthening sleeve lining is arranged on the inner side of a tunnel secondary lining, and the grouting anchoring structure is arranged on the outer side of the strengthening sleeve lining. The method comprises the steps including the first step of structural steel arch frame installing, the second step of grouting anchoring construction, the third step of tunnel secondary lining inner wall roughening treatment, the fourth step of arch-shaped steel bar structure construction and the fifth step of concrete sleeve lining construction. According to the karst stratum tunnel secondary lining renovation construction structure and method, design is reasonable, construction is simple and convenient, and the usage effect is good; the surrounding rock on the outer side of the tunnel section needing to be renovated is integrally strengthened through the grouting anchoring structure, and the tunnel outer side surrounding rock and the tunnel support structure are fastened and connected into a whole; and meanwhile, the strengthening sleeve lining is arranged in the tunnel secondary lining, the support strength and the support effect of the constructed formed sleeve lining are further effectively improved, and the renovation effect of the tunnel secondary lining is ensured.

The invention discloses a method for planting red rice comprising following steps: seedbed preparation, seed pretreatment, sowing management, and cultivation management. According to the method, cultivation technology control is performed during planting which provides sufficient nutrient for red rice and guarantees the normal growth of red rice; at the same time, seed coating agent is applied for mixed sowing to avoid seed disease effectively; with the combination of sowing management and cultivation management, the red rice planting hybridization and degeneration, rice ear downsizing, setting percentage reduction, empty-grain percentage incensement and thousand kernel weight reduction are solved; the red rice quality and output are effectively increased and economic benefit are increased.

The invention discloses a tunnel second lining remediation method for die cast construction of a lining. The method includes the following steps that firstly, a structural steel arch frame is mounted;secondly, hair cutting treatment is carried out on the inner wall of a tunnel second lining; thirdly, an arched steel bar structure is constructed; and fourthly, die cast construction is conducted onthe concrete lining, die cast construction is carried out on the concrete lining in the longitudinal extension direction of a tunnel from back to front, and the concrete lining is divided into a plurality of lining sections from back to front. According to the method, the design is reasonable, the construction is simple and convenient, the use effect is good, an arched template for carrying out molding construction on a construction lining is formed by splicing seven lining molding templates, meanwhile, assembled scaffolds are adopted, and subsection pouring is carried out on the constructionlining from bottom to top through the arched template; the adopted assembled scaffolds are disassembled and assembled on site simply and conveniently, and the construction efficiency of the lining can be effectively increased; and at the same time, a vault pouring section of the construction lining is poured through a vault pouring structure to ensure the concrete compactness and molding qualityof the vault pouring section, and the secondary remediation effect of the tunnel is ensured.

The invention discloses a bactericidal composition containing penthiopyrad and meptyldinocap. Active components of the bactericidal composition are penthiopyrad and meptyldinocap. Weight ratio of penthiopyrad to meptyldinocap is 1:10-10:1. Total weight of penthiopyrad and meptyldinocap in the composition is 1-70 wt%. The bactericidal composition can be made into any one dosage form selected from emulsion in water, microemulsion, suspending agent, wettable powder and water dispersible granule. The bactericidal composition is used for controlling powdery mildew of melons, grape and strawberry. According to the invention, dosage of pesticide is reduced, frequency of drug administration is minimized, and medication cost is decreased. The bactericidal composition of the invention is safe to crops.

The invention discloses a pesticide composition containing tetramycin and sedaxane. The pesticide composition comprises an inert ingredient, tetramycin and the sedaxane; the ratio of the parts by weight of the tetramycin to the sedaxane ranges from 1:1 to 1:80, and the total weight of the tetramycin and the sedaxane in the composition ranges from 1% to 80%; the tetramycin and the sedaxane have the obvious synergistic interaction effect on pathogen fungi after being compounded, and the pesticide composition is suitable for preventing and treating crop diseases caused by the pathogen fungi, and is particularly suitable for preventing and treating rice blast caused by pyricularia oryae.

The invention discloses a sterilization composition containing amisulbrom and ametoctradin. According to the sterilization composition, amisulbrom and ametoctradin are taken as the active ingredients, and weight ratio of amisulbrom to ametoctradin ranges from 20:1 to 1:20; the total weight of amisulbrom and ametoctradin accounts for 5 to 80% of the weight of the sterilization composition; the sterilization composition can be prepared into one agent selected from a suspending agent, a dispersible oil suspended agent, a water dispersible granule, and a wettable powder, is used for preventing and treating crop diseases caused by fungal pathogens, and especially crop downy mildew and phytophthora disease caused by peronospora pathogens. Application amount of the sterilization composition is reduced, spraying times are reduced, application cost is reduced, and the sterilization composition is safe for crops.

The invention discloses a spiral type ventilation structure for an oil and gas delivery pipe in a permafrost region. The spiral type ventilation structure comprises an insulating layer arranged on theouter side of the oil and gas delivery pipeline, and a spiral type ventilation pipe. The insulating layer is pasted to the outer wall of the oil and gas delivery pipeline. A support is arranged between the insulating layer and the spiral type ventilation pipe. A vertical air inlet pipe and a vertical air outlet pipe of the oil and gas delivery pipeline extend out of the ground. Through the spiraltype ventilation structure, a frozen soil body around the oil and gas delivery pipeline can be protected effectively, thermal damage to the soil body around the oil and gas delivery pipeline in the permafrost region is avoided, pipeline damage is eliminated, and operation safety of the pipeline in the permafrost region is improved.

The invention discloses an insecticide composition containing fluxapyroxad and fludioxonil. Effective constituents include the fluxapyroxad and the fludioxonil, the rest is an inert ingredient, the weight ratio of the fluxapyroxad to the fludioxonil ranges from 1:5 to 5:1, and the total weight of the fluxapyroxad and the fludioxonil accounts for 1%-90% of the weight of the composition; according to practical application requirements, the insecticide composition can be manufactured into one of an emulsion in water, a microemulsion, a suspending agent, wettable powder and a water dispersible granule, and is used for preventing and treating botrytis cinerea and a mango anthracnose disease. The insecticide composition is rapid in pesticide effect taking, long in lasting period, low in using cost and convenient to use, saves time and labor, and has the huge economic benefit and the huge social benefit on application and popularization.