1821 results about "Pesticide application" patented technology

The invention relates to a stable controlled release particle pesticide-containing fertilizer. The pesticide-containing fertilizer has a core-shell structure, is granular and comprises a core which is composed of a fertilizer and a microcapsule pesticide or pesticide pulvis adsorbed by a porous material, and a shell which is used as a controlled release layer. The invention enables the pesticide and the fertilizer to stably exist and to be slowly released, frequency of pesticide application and fertilizer application in growth stages of crops to be reduced and field labor to be saved.

The invention relates to a self-controlled efficient and electrostatic-spraying pesticide application machine for greenhouses, and the machine provided by the invention comprises a spraying dolly, a pesticide supply system, a pressure fluctuation elimination system, an HMI-PLC (human-machine interface-programmable logic controller) human-machine interactive automatic logic control system, a rotating electrostatic spray system, a high-definition mistform vedio monitoring system, a machine frame and a power supply system, wherein the pesticide supply system, the pressure fluctuation elimination system, the HMI-PLC man-machine interactive automatic logic control system, the rotating electrostatic spray system and the power supply system are arranged in a spraying dolly shell (42); the high-definition mistform vedio monitoring system is arranged at the top of the spraying dolly; and the HMI-PLC man-machine interactive automatic logic control system is connected between the pesticide supply system and the rotating electrostatic spray system by virtue of a pipeline. By using the machine provided by the invention, on the premise of ensuring the pest control effect, the utilization rate of pesticides is improved, the pest control cost is reduced, the environmental pollution is reduced, the production efficiency and the social efficiency are improved simultaneously, and the labor intensity is reduced.

The present invention provides an environmentally friendly breeding method of ricefield eels and loaches, belonging to the stereoscopic environmentally friendly agriculture development mode and the matching technology. The technical scheme for solving the problem is as follows: 1, rice field construction; 2, rice field fertilization; 3, rational pesticide application; 4, breeding the ricefield eels and the loaches; 5, feeding management; 6, the ricefield eels and the loaches recapturing; 7, escape-proof technology of the ricefield eels and the loaches. The method has the following beneficial effects: 1, the rate of output is high; the annual rate of output of the ricefield eels and the loaches in each area unit is more than 1 / 3; 2, the management is convenient; the ricefield eels and the loaches can be placed simply, namely, only the seeds need to be placed into the rice field and the earthworms need to be placed on the ridge; 3, the economic benefit is good: the net profit of the ricefield eels and the loaches in the rice field in each area unit can be more than 3000 Yuan; 4, the environmentally protection effect is good, the soil can be loose and the soil fertility can be enhanced; simultaneously, with lots of organic fertilizers, the dosage of the chemical fertilizer is reduced and there is no need for the pesticide such as organic phosphorus.

The invention relates to the technical field of agricultural pesticide application, in particular to an airborne variable pesticide application system and method for an agricultural unmanned aerial vehicle. The airborne variable pesticide application system comprises the unmanned aerial vehicle, a prescription map aerial pesticide application system, a monitoring center, a GPS positioning mechanism and a meteorological station. The prescription map aerial pesticide application system is installed on the unmanned aerial vehicle and used for decision making of pesticide application prescriptions of the unmanned aerial vehicle. Decision making signals are sent to a lower computer through an upper computer, and the lower computer is used for carrying out online dynamic adjustment on the pesticide application mechanism of the unmanned aerial vehicle. The monitoring center is used for monitoring the work speed and the drifting condition of the unmanned aerial vehicle. The GPS positioning mechanism is used for positioning the geographic position of the GPS positioning mechanism. According to variable pesticide application, the system combines the advantages of equipment and decision making software to carry out prescription map generation and research on guiding variable work of pesticide application equipment, and use and popularization are facilitated.

The invention relates to a spraying machine. The spraying machine comprises a cab, a cab lifting device, a variable-tread assembly, a chassis power system, a spraying frame lifting device, a spraying rod assembly, a pesticide box assembly, a wheel assembly and a whole machine hydraulic system, wherein the cab lifting device comprises upper cab parallel rods, cab lifting cylinders, transverse cab stabilizing rods, a fixed cab lifting frame, lower cab parallel rods and a movable cab lifting frame; the upper cab parallel rods and the lower cab parallel rods are equal in length, one end of each parallel rod is hinged to the fixed cab lifting frame, and the other end of each parallel rod is hinged to the movable cab lifting frame; one end of each cab lifting cylinder is hinged to the corresponding upper cab parallel rod, the other end is hinged to the fixed cab lifting frame, and a cab is lifted and lowered under the telescopic action of the cylinders. The spraying machine adopts a hydraulic self-propelling manner, the tread can be adjusted to adapt to ridging spaces of different crops, large-area pesticide application can be performed, the height of a spraying rod can be adjusted according to crop height change, and flexible steering is realized.

The invention discloses a route planning method for pesticide application aided by multiple unmanned aerial vehicles. The method comprises the following steps: determining the course and spraying width of the unmanned aerial vehicles and dividing a pesticide application area into a plurality of parallel sub-areas accordingly; then determining optimization standards and constraint conditions and accordingly establishing a target function for the route of pesticide application aided by the multiple unmanned aerial vehicles; and optimizing the established target function by using an optimization method which integrates genetic algorithm and simulated annealing algorithm into one so as to eventually obtain an optimal flight route for the unmanned aerial vehicles. According to the invention, the dual optimization scheme of a combination of GA and SA is employed, and the route for coordinated flight of the multiple unmanned aerial vehicles is provided on the basis of the optimization scheme, so the technical problem that common agricultural machines cannot accurately accomplish pesticide application in agriculture is overcome.

The invention discloses an agricultural unmanned gyroplane optimal working parameter testing device and method. The agricultural unmanned gyroplane optimal working parameter testing device comprises a gyroplane, a flight attitude console, a working altitude lifting platform, a pesticide spraying system, a wind speed flow field testing system and a spraying characteristic testing system, wherein the spraying characteristic testing system comprises a fogdrop flow field testing system, a fogdrop particle size measuring system and a spraying sedimentation testing system. According to the testing device and method, influences of single-rotor airplane structures, multi-rotor airplane structures, pesticide spraying parameters of pesticide application flow, pesticide application pressure, working altitudes and positions of spray nozzles relative to centers of airplane bodies, environmental influences of wind speed, wind direction, temperature and humidity and airplane attitude parameters of roll angles, pitching angles and yaw angles on fogdrop uniformity, wind speed flow field uniformity, fogdrop particle size distribution, other pesticide application effects and pesticide application efficiency can be provided comprehensively, systematically, synthetically and quantitatively, spraying characteristics of agricultural gyroplane spraying operation are tested, and optimal pesticide application combined parameters are researched.

The invention belongs to the technical field of intelligent management of water-saving irrigation and relates to an intelligent drop irrigation cloud service management system based on a microservice-oriented architecture. The system adopts an architecture with a layer structure and comprises a user layer, an application layer, a gateway layer, a microservice layer, a data layer, an internet of things layer and a resource layer. In the system, a business is split into small-granularity microservice, so that the problems of high coupling degree, high maintenance cost and low reliability of a single architecture are solved; due to the combination of distributed deployment, the request processing capacity is improved, the flexibility is stronger, and the performance advantages is obvious; andthe functional combination is flexibly regulated, according to the engineering scale, crop variety and investment level as well as the practical condition, so that it is convenient to realize rapid upgrading, the problems of long development period, high investment and maintaining and upgrading difficulty are solved, and the universality and adaptability are improved. Microservice covers the links such as operation, maintenance, irrigation, fertilization, pesticide application, agricultural machinery and agricultural technologies of a drop irrigation system, the operation management level ofthe drop irrigation system is comprehensively promoted, the informatization advantage of a platform is exerted, and the water saving, beneficiating and quality improving levels are improved.

The invention relates to the field of research and development of biopesticide preparation, concretely, relates to a tetramycin complex and an application. the tetramycin complex comprises tetramycin and active substances; the active substances comprise one or more of the following substances: azoles, pyrimidinyl methanol, 2-amino-miazines, morpholines, aniline pyrimidines, pyrroles, benzamides, benzimidazoles, dicarboximides, methanamides, kresoxim-methyl, dithiocarbamates, N-halomethylthio-dicarboximides, copper compounds, nitrophenol derivatives, organophosphates, guanidines, trace elements, carbamates and pyrethroids. According to the invention, compared with the prior art, the tetramycin complex and the application are capable of reducing the danger of resistant fungal strains selectivity, prolonging the service life of active substances, enlarging prevention and treatment scope, increasing diseases prevention effect and delaying or overcoming resistance of pathogenic bacteria, the cost is saved, and the application frequency of pesticide can be reduced.

The invention provides an intelligent pesticide application unmanned helicopter and belongs to the technical field of agriculture. The unmanned helicopter comprises a helicopter body frame, wherein the helicopter body frame is provided with a rotary wing flight system and a undercarriage component which are controlled by a flight control main engine; the communication end of the flight control main engine is communicated with a global position system (GPS), the master control output end of the flight control main engine is connected with the controlled end of the rotary wing flight system and is used for sending a navigation control signal to the flight system according to a contemplated route and real-time position information transmitted from the GPS; the central part below the helicopter body frame is also provided with a pesticide application device consisting of a pesticide chest, a liquid pump, a spray beam and a spray nozzle; the liquid outlet of the pesticide chest is communicated with the spray beam with the spray nozzle through a liquid infusion pipeline and the liquid pump; the flight control main engine also comprises an auxiliary control output end; and the auxiliary control output end is connected with the controlled end of the liquid pump and is used for sending a pesticide application control signal to the liquid pump according to the preset pesticide application sites and the real-time position information transmitted from the GPS. The unmanned helicopter can realize automatic navigation flight and can automatically control the pesticide application operation.

The invention discloses a plant protection unmanned plane spraying control system which performs pesticide spraying according to the flight height and flight speed and a spraying control method. The spraying control method comprises steps of (A) determining pesticide spraying amount, (B) detecting flight speed and flight height of the unmanned plane, (C) calculating the spraying speed, wherein the spraying speed =pesticide spraying amount *flight speed* spraying swath and the spraying swath and the flight height satisfy the function relation: spraying swath=f (flight height), (D) calculating the pumping speed of a water pump and the rotation speed of the centrifugation atomization sprayer according to the spraying speed, (E) transmitting a corresponding signal to a water pump controller and a centrifugation atomization sprayer controller by the unmanned plane navigation controller according to the pumping speed of the water pump and the rotation speed of the centrifugation atomization sprayer. The plant protection unmanned plane spraying control system can automatically regulate according to the flight speed and the flight height of the plant protection unmanned plane, guarantees the effective adhesion amount and the uniform distribution rate of the pesticide droplet on the crop and improves the pesticide application effect.

The invention relates to an elastic inner cavity type anti-vibration pesticide box for a plant protection unmanned aerial vehicle. The elastic inner cavity type anti-vibration pesticide box is characterized in that a check valve is fixed into a water injection opening, a ball valve is arranged at a water outlet, and a liquid storage bag is arranged between the check valve and the ball valve in a connected manner. The elastic inner cavity type anti-vibration pesticide box has the advantages that the liquid storage bag is elastic and anticorrosion, gaps between the liquid storage bag and a pesticide box are filled with elastic materials, the elastic materials can be compressed when the liquid storage bag is filled with pesticide liquid and is expanded, and can be expanded when the pesticide liquid in the liquid storage bag is reduced and the liquid storage bag is contracted, the gaps between the pesticide box and the liquid storage bag are always filled with the elastic materials, the inner wall of the liquid storage bag always clings to the pesticide liquid, and accordingly the liquid storage bag assuredly always keeps being fixedly positioned in the pesticide box when the plant protection unmanned aerial vehicle shakes; the integral gravity center of anti-vibration pesticide box only can longitudinally change without transverse changing along with reduction of the pesticide liquid in pesticide application procedures of the plant protection unmanned aerial vehicle, accordingly, the integral stability of the pesticide box can be greatly enhanced, and the problem of deterioration of the flight stability of an existing plant protection unmanned aerial vehicle in pesticide application procedures due to vibration of pesticide liquid in an existing pesticide box can be fundamentally solved.

The invention discloses a hyperspectral plant leaf disease and insect pest diagnosis system belonging to the field of agriculture. A hyperspectral imager and a line light source are together fixedly connected with an electric control displacement platform, and move together by control of a displacement platform control device; in the process of moving, the line light source irradiates a calibration board and a to-be-measured plant leaf, the hyperspectral imager collects data and uploads to a computer in real time; through image analysis and processing by processing software, the data is inputted into a disease and insect pest triple diagnosis model, the plant disease and insect pest infection degree can be quantitatively obtained in real time, according to the analysis, decision on whether a to-be-measured plant needs to be sprayed with a pesticide can be made, and decision on pesticide dose and type and spray head form can be made. The hyperspectral plant leaf disease and insect pest diagnosis system is mainly used for the fast nondestructive diagnosis of plant diseases and insect pest infection degree, and can play a positive role to improve the decision-making level of precision pesticide application and implement precision agriculture.

The invention discloses a composite organic fertilizer of waste oil residue and cake meal and its preparation method, the organic fertilizer is prepared from the following raw materials: by weight, 12-15 parts of the waste oil residue, 30-35 parts of soybean meal, 10-12 parts of medical stone powder, 10-12 parts of zeolite powder, 20-25 parts of oil shale powder, 2-3 parts of sophora flavescens powder, 1-2 parts of quisqualis powder, 10-12 parts of coleus blumei powder, 50-55 parts of manioca leaf powder, 30-35 parts of tea-leaf, 100-120 parts of vinasse, 40-50 parts of vinegar residue, 10-15 parts of edible fungus chaff, 30-35 parts of ammonium dihydrogen phosphate, 16-19 parts of potassium sulfate, 50-55 parts of ammonium bicarbonate, 3-4 parts of a multielement slow release fertilizer and 1-2 parts of an EM (Effective Microorganism) bacteria agent; according to the composite organic fertilizer, the soybean meal, the oil residue, the medical stone powder, the zeolite powder and the like contain large quantities of trace elements and plant chemical components, the contents of related beneficial components in crops can be increased by crop absorption, the nutrition and health care values can be increased, at the same time, the sophora flavescens powder and the quisqualis powder have bactericidal effects, can reduce agricultural crop diseases and insect pests, can reduce chemical pesticide application amount to promote environmental protection.

The invention relates to a method for planting dendrobium nobile, in particular to a pollution-free method for planting the dendrobium nobile lindl. The pollution-free method for planting the dendrobium nobile lindl comprises the steps of tissue culture seedling breeding, site selection, ground cultivation under a greenhouse, matrix laying, field planting of seedlings, daily planting environment management, daily management and harvest and storage. After tissue culture seedling transplanting, the survival rate is high, growth is fast, the yield is high, nutrition ingredients of the dendrobium nobile lindl are close to those of wild dendrobium nobile lindl, the medicinal value is high, pesticide application is reduced, and plant diseases and insect pests seldom occur.

The invention discloses a telemetry system and a method of pesticide mist distribution and drift trend in aerial pesticide application, and relates to the technical field of harmful substance monitoring. The system comprises: an acquisition module which is used to acquire infrared light radiation in a detection area, and to allow the infrared light to enter into an optical module; an optical module which is used to obtain an infrared imaging spectrum of the detection area with distributed pesticide mist cloud cluster according to the incident infrared light radiation, and to send the infraredimaging spectrum to a treatment module; a treatment module which is used to perform characteristic analysis of the infrared imaging spectrum, to identify the pesticide mist cloud cluster, to retrievea concentration image of the pesticide mist cloud cluster, and to predict the pesticide mist drift trend according to the concentration image. The system and the method of the invention can comprehensively reflect the drift condition of the pesticide mist, has strong real-time performance, and can obtain the concentration and components of the pesticide mist. The invention facilitates the improvement of pesticide application benefits, not only is saving and economical, but also avoids the damage to environment and residential places.

The invention relates to an antagonistic bacterium for controlling leaf spot of peanut and a microbial preparation thereof, belonging to the field of biological control on crop disease. The invention provides a Bacillus amyloliquefaciens BA-KA1 of which the collection number is CGMCC No.8341 and a microbial inoculant containing the same, and also provides application of the Bacillus amyloliquefaciens or the microbial inoculant in control on leaf spot of peanut. According to the invention, the Bacillus amyloliquefaciens BA-KA1 of which the collection number is CGMCC No.8341 and the microbial inoculant thereof have obvious antagonistic action on leaf spot bacteria of peanut, and can control occurrence of leaf spot of peanut; the control efficiency is above 70%. The use of the strain and the microbial preparation thereof can reduce application of chemical pesticides in peanut production processes, thus having favorable ecological and social benefits.

The invention discloses a photovoltaic water-fertilizer-pesticide integrated drip irrigation system automatically collecting rainwater. The system comprises a photovoltaic device, a rainwater collecting device, an irrigation device, and a control device. The irrigation device and the control device are connected with the photovoltaic device. The irrigation device comprises a fertilization system, a pesticide application system, an energy storage system, and an irrigating pipeline system. The control device comprises a touchpad and a control cabinet. Beneficial effects of the system are that the system is high in automation degree, good in operability, stable in operation, and low in consumption, and is green, and is advantaged by saving water, saving fertilizer, and saving pesticide, and irrigation uniformity is high, and water and fertilizer utilization rate is high, and automatic water storage and pressurization and water-fertilizer-pesticide integrated irrigation are realized.

The invention relates to a novel rotational flow atomization apparatus and an application technology. The structure characteristics of a core unit, namely a novel rotary sprayer is that the upper part, connected with fluid, of the rotary sprayer is fixed, the lower part of the rotary sprayer is connected with the upper part through one or a plurality of nozzles by virtue of bearings, the lower part of the sprayer is pushed to rotate at high speed by reactive force formed when a part of kinetic energy of the fluid under pressure is ejected from the nozzles, and meanwhile, most of kinetic energy can be effectively converted into surface energy which can facilitate water flow atomization when impacting the bevel or oblique seam of the sprayer or passing through a hole. The novel sprayer has the advantages that the use pressure is low, the rotating speed is rapid, fogdrops are small and uniform, and the fog spraying coverage area is large. The novel rotational flow atomization apparatus can be applied to extinguishment, black smoke can be instantaneously eliminated, fire head is suppressed in seconds, and big fire can be extinguished within ten seconds; when the novel rotational flow atomization apparatus is applied to flue gas purification, rotational flow like tornado can be produced in a tower, and high-efficient desulfurization dust removal is realized; the novel rotational flow atomization apparatus can be widely applied to city purification, park green space watering, landscape decoration, and crop watering, fertilization, pesticide application and industrial mixing, separating, mass transfer and heat transfer processes, and the circumjacent PM 2.5 and other gaseous pollutant can be effectively removed.

The invention belongs to the technical field of pesticide application, and relates to new application of berberine, in particular to new application of berberine serving as an agricultural fungicide. The new application refers to preventing and controlling plant diseases caused by plant pathogenic bacteria. Studies show that berberine has good inhibiting effect on various plant pathogenic bacteria, and a theoretic foundation is laid for developing berberine into a new pesticide.

The invention discloses a green, long-lasting antibacterial, mildew-resistant and insecticidal water-based micro-emulsifier. The green, long-lasting antibacterial, mildew-resistant and insecticidal water-based micro-emulsifier is characterized in that an insect growth regulator (IGR) is utilized as a main component; auxiliary components comprise multi-component plant essential oil and / or low-toxicity high-efficiency pesticides, bactericides, synergists, penetrants, water-soluble solvents, surfactants and a stabilizing agent; and the green, long-lasting antibacterial, mildew-resistant and insecticidal water-based micro-emulsifier satisfies prevention and control requirements of different places. The green, long-lasting antibacterial, mildew-resistant and insecticidal water-based micro-emulsifier has a wide insecticidal spectrum, high efficiency, an ovicidal function, an insect growth inhibition function and a long persistent period, avoids drug resistance, has bacteriostasis and mildew-resistance effects, a low residue amount and low toxicity to mammals, avoids pollution caused by pesticide application imbalance, and is conducive to the ecological environment. The green, long-lasting antibacterial, mildew-resistant and insecticidal water-based micro-emulsifier can be sprayed on an object, does not produce imprints, does not pollute stored objects, is suitable for bacteriostasis, mildew-resistance and pest killing of stored objects and plants, especially, is suitable for killing and control of insects, mites, mould and harmful bacteria on stored objects such as stored grains, tobacco, medicinal materials, leather, clothes, books, archives and historical relics, and can reduce the loss caused by insect damage and mildewing of stored objects and grains.

A self-adaptive orchard sprayer comprises a traction chassis, wherein a pesticide application device and a plurality of movable ultrasonic detection devices are arranged at the front end above the traction chassis. Each ultrasonic detection device mainly comprises an ultrasonic sensor and a vertical moving device, and a detection signal of the ultrasonic sensor is output and connected to an embedded control platform. The pesticide application device mainly comprises a pesticide spraying device and a stepping motor rotation control device, wherein the pesticide spraying device are provided with electric ball valves, flow sensors, pressure sensors and solenoid valves, and detection and control signals of the electric ball valves, the flow sensors, the pressure sensors and the solenoid valves are connected to the embedded control platform which integrates signals of the sensors to control opening of the electric ball valves and actions of the solenoid valves. By means of the self-adaptive orchard sprayer, tree form information of control targets in an orchard can be collected automatically; according to the information, the ultrasonic sensors can be distributed automatically, and rotating angles of an air bellow are regulated automatically, or rotating angles of the air bellow can be regulated manually according to actual needs. Therefore, pesticide application efficiency is increased, pollution to the environment and personal injury to operators caused by pesticide application are reduced.

The invention provides an aircraft spraying state monitoring device and an aircraft spraying operation area measurement system. The aircraft spraying state monitoring device comprises a spraying state monitoring unit, a global satellite navigation system GNSS, a height measuring unit, an airborne supervisory control unit and an airborne display unit. The airborne display unit is connected with the spraying state monitoring unit, the global satellite navigation system GNSS, the height measuring unit and the airborne supervisory control unit, and is used for displaying spraying state monitoring data collected by the spraying state monitoring unit, the position, velocity, course and flight height data of the aircraft operation, the distance data of a spray lance and the ground plant canopy, and aircraft pesticide application state data corresponding to different time nodes, wherein the position, velocity, course and flight height data of the aircraft operation are collected by the GNSS, and the distance data are collected by the height measuring unit. The aircraft spraying state monitoring device provided by the invention is capable of effectively monitoring the spraying state during aircraft operation.

The invention discloses a farm-oriented fertilizer. The fertilizer is prepared from following raw materials in parts by weight: 30-35 of biogas residue, 20-24 of bran, 12-15 of soybean meal, 10-13 of bone meal, 10-12 of lignite, 13-15 of medical stone, 10-13 of urea, 18-20 of potassium sulfate, 12-14 of potassium dihydrogen phosphate, 4-5 of ammonium molybdate, 4-6 of borax, 2-4 of humic acid and 9-12 of a soil conditioner. The biogas residue, the bran, the soybean meal, and other agricultural and sideline raw materials are adopted by the fertilizer. The agricultural and sideline raw materials are convenient to take, low in cost and rich in nutrition, and can improve the soil structure. The lignite and the medical stone, which have rich nutrition and multi functions and are natural raw materials, are added for supplement, thus fully utilizing resources, reducing the production investment and reducing pollution caused by chemical fertilizers. The added borax provides trace elements for plants, and the borax itself has a function of germ control. The biogas residue contains rich organic matters, humus, micronutrient elements, a plurality of amino acids, enzymes and beneficial microorganisms. The biogas residue has loose texture and a moderate acid-base value, and is capable of modifying the soil when the biogas residue is produced into fertilizers. In addition, the biogas residue is capable of reducing the using amount of chemical fertilizers and pesticides, reducing the cost and effectively improving the crop quality and the yield.

The invention provides an aerial pesticide application spray automatic test system .The system comprises a true flight wind speed simulation device and a spray control device .The true flight wind speed simulation device comprises a draught fan device, a stabilization cavity and a shrinkage cavity .The stabilization cavity and the shrinkage cavity are connected in sequence .The draught fan device is arranged at an inlet of the stabilization cavity .The specific value of the cross section area of an inlet of the shrinkage cavity and the cross section area of an outlet of the shrinkage cavity is larger than a first preset threshold value .The spray control device comprises a water storage tank, a diaphragm pump, a guide pipeline, a spray nozzle, a laser particle analyzer and a data collection device .The spray control device further comprises a flow regulation device and / or a pipe pressure regulation device .The spray nozzle is arranged at the outlet of the shrinkage cavity .The laser particle analyzer is arranged on the side, away from the shrinkage cavity, of the spray nozzle and used for measuring the particle size of fog drops sprayed out of the spray nozzle and sending the measured particle analyzer of the fog drops to the data collection device .Through the system, the true flight wind speed can be effectively simulated, and particle size distribution of the fog drops sprayed out of the spray nozzle can be obtained directly.

The invention provides a method for locally culturing and producing arbuscular mycorrhiza fungus biological agent fertilizer in farmlands. The method is characterized by comprising the following steps of: 1, preparing a farmland culturing pond and a culture medium; 2, transplanting and culturing arbuscular mycorrhiza fungi; 3, absorbing and converting biological fertilizer; and 4, collecting biological fertilizer. Compared with the prior art, the technique adopted in the method has the advantages that: 1, the raw materials are readily available, the culture of the raw materials is easy, and the cost is low; 2, the culture technique and the production technique are conveniently popularized in rural areas; and 3, the production technique is green and environment friendly, which facilitates the development of modern agriculture. In addition, by using the fertilizer of the invention, the used amount of the quick-acting fertilizer is reduced and the used amount of partial fertilizer is reduced, so that the pollution to soil, water resources and air is lowered, and the fertilizer is particularly suitable to be used for planting seedlings of farm crops and medicinal plants. Tests show that the yield of the farm crops cultured by using the fertilizer of the method is improved by over 50 percent compared with that of the farm crops cultured by using the common fertilizer.

The invention discloses an automatic variable pesticide spraying system and a control method thereof. The automatic variable pesticide spraying system comprises a moving trolley, a pesticide box and a variable frequency pump, wherein the pesticide box and the variable frequency pump are mounted on the moving trolley. The pesticide box is connected with an inlet of the variable frequency pump through a pesticide conveying pipeline, an outlet of the variable frequency pump is connected with N pesticide conveying branch pipes through a pesticide conveying main pipe, and a shower nozzle is mounted at the end of each pesticide conveying branch pipe. Liquid pesticide output by the variable frequency pump can be further conveyed back into the pesticide box through a return pipe, the return pipe is provided with a first flow valve, and a flow sensor and a pressure sensor are further arranged on the pesticide conveying main pipe between the return pipe and each pesticide conveying branch pipe. A second flow valve is arranged on each pesticide conveying branch pipe. The automatic variable pesticide spraying system and the control method thereof have the obvious advantages that a variable pesticide application technology can be used for spraying pesticide as required according to acquired small-area difference information of farmland injurious insects, the pesticide spraying amount can be controlled accurately, pesticide waste can be avoided, the environment can be prevented from being polluted, and the system is even in pesticide spraying and good in atomization effect.