518 results about "Nutrient content" patented technology

The invention provides linseed oil rich in vitamin E and capable of enhancing linolenic acid activity and a preparation method of the linseed oil, and belongs to the technical field of edible oil processing. The preparation method of the flaxseed oil comprises the following steps: mechanically polishing and degumming flaxseeds, and then carrying out microwave thermal refining and low-temperature squeezing to obtain virgin flaxseed oil and a squeezed cake; adsorbing and deacidifying the primary oil through modified diatomite to obtain refined oil; carrying out ethanol solution ultrasonic extraction and supercritical CO2 extraction on the pressed cake to obtain a high-purity vitamin E extract; and finally, mixing the extract with the refined linseed oil to obtain the linseed oil. Through the whole-process low-temperature, physical adsorption and efficient extraction and purification process, the retention rate and enrichment degree of vitamin E are remarkably improved, meanwhile, nutritional ingredients such as alpha-linolenic acid are effectively protected, use of synthetic antioxidants is avoided, and the product has the advantages of being high in oxidation stability, good in safety, excellent in sensory quality and the like and is suitable for industrial production. The edible oil is suitable for being used as a nutritional supplement, edible oil or food additive.

The invention relates to the technical field of nutritious food configuration, and discloses a system and a method for configuring personalized nutritious food, and the method for configuring personalized nutritious food comprises the following steps: collecting spectral characteristic data and chemical component data of a food material sample by adopting a hyperspectral imaging and mass spectrum combined technology, and obtaining holographic chemical fingerprint information; processing the collected spectral data by using a multi-scale feature extraction algorithm, extracting multi-level feature information of the food materials, and carrying out standardization and dimension reduction processing on the feature data; according to the method, high-precision prediction of the nutrient content of the food material is realized through combination of hyperspectral imaging and mass spectrometry technologies and a deep learning model, so that the nutrient content prediction accuracy and the configuration scheme accuracy are improved, the nutrient balance achievement rate is also improved, and meanwhile, the limitation of a static database is broken through; real-time nutritional ingredient analysis of any food material is achieved, the method can adapt to individual differences and freshness changes of the food materials, and accurate configuration based on actual food material characteristics is provided.

The invention discloses a seed coating containing an arbuscular mycorrhizal inoculant. The seed coating is prepared from the following components in parts by weight: 25 to 35 parts of the arbuscular mycorrhizal inoculant, 35 to 45 parts of a soil conditioner, 15 to 20 parts of talcum powder and 15 to 20 parts of polyvinyl acetate. The invention further provides a preparation method of the seed coating containing the arbuscular mycorrhizal inoculant and application of the seed coating to reduction of soil heavy metal pollution, increase of disease resistance and stress resistance of crops and promotion of crop growth. The seed coating containing the arbuscular mycorrhizal inoculant wraps the surfaces of plant seeds, provides good nutritional ingredients for growth and development of the seeds, and is beneficial to improving the germination rate of the seeds under heavy metal cadmium stress, reducing soil heavy metal cadmium pollution, improving soil quality, increasing soil fertility and improving disease resistance and stress resistance of crops; growth of seedlings is promoted, and crop quality and yield are improved.

The invention discloses artificial soil based on manganese slag, red mud and ardealite. The artificial soil is mainly prepared from a manganese slag-red mud-ardealite mixed matrix and a modifier, the weight ratio of the manganese slag to the red mud to the ardealite in the manganese slag-red mud-ardealite mixed matrix is (0.4-1.6): (0.1-0.5): (0.5-0.9); the modifier comprises calcium oxide, and further comprises rice straw, biochar, zeolite or a combination thereof, and the modifier accounts for 1-15% of the weight of the artificial soil. Accordingly, a corresponding preparation method is also established. According to the method, the three solid wastes are mixed according to the characteristics, so that specific pollutants such as ammonia nitrogen, phosphorus, fluorine and Mn < 2 + > can be fixed, the reduction of heavy metals is realized, the nutrients beneficial to plant growth are reserved, the artificial soil with rich nutrients is synchronously reconstructed, the qualitative change from waste residues to resources is realized, the process is simple, and the effect is good. The obtained artificial soil can be used for greening planting, supplementing manganese ore, aluminum ore and phosphorite surrounding soil deficiency areas, and solving the problems of no soil, ploughability and ecological restoration of mining areas.

The invention provides a nutrient balance calculation method, device and equipment and a storage medium, and the method comprises the steps: obtaining crop related data of crops in a target region, the nutrient content of an organic fertilizer, the heavy metal content of manure, and soil related data of the target region, determining the maximum application amount and the safety upper limit of the manure based on the related data, the manure heavy metal content, the organic fertilizer nutrient content and the soil related data, and determining the safety upper limit of the manure based on the safety upper limit and the maximum application amount of the manure; determining total nutrient data of the crop in the whole growth period based on the related data, and determining restrictive elements based on the total nutrient data; determining the maximum application amount of the organic fertilizer based on the restrictive elements, the manure safety upper limit and the total nutrient data; and based on the maximum application amount of the organic fertilizer, the total nutrient data and the manure nutrient content, determining the chemical fertilizer supplement amount of the target area.

The invention discloses a water-soluble fertilizer containing humic acid. The water-soluble fertilizer comprises the following components in parts by weight: 5-8 parts of ammonium sulfate, 28-32 parts of calcium ammonium nitrate, 18-22 parts of monoammonium phosphate, 32-38 parts of potassium sulfate and 10-15 parts of modified potassium humate. The preparation method comprises the following steps: carrying out alkali extraction on modified humic acid obtained by modifying lignite to prepare modified potassium humate, adding the modified potassium humate into a fertilizer raw material, and granulating to prepare the humic acid-containing water-soluble fertilizer. The preparation process comprises the following steps: S1, crushing and sieving the ammonium sulfate, the calcium ammonium nitrate, the monoammonium phosphate and the potassium sulfate, adding the modified potassium humate into a granulator in proportion, and uniformly stirring to obtain a mixture; s2, urea and water are prepared into a solution according to the mass ratio of 1: 3; and S3, uniformly spraying the urea guniting solution prepared in S2 into the raw material layer, and stirring until liquid drops and powder are in full contact to form particles to prepare the fertilizer. The humic acid-containing water-soluble fertilizer produced by the invention has the advantages of high nutrient content, soil structure improvement, crop root growth promotion and yield increase.

The invention relates to a fertilization prescription map rapid generation method and system based on multispectral detection, and belongs to the technical field of agriculture. Comprising the following steps: multi-source data acquisition: synchronously acquiring a 450-900nm wave band crop multi-spectral image acquired by a multi-spectral camera carried by an unmanned aerial vehicle, laboratory detection nutrient data of a preset soil sampling point, real-time soil humidity data, plot boundary vector data and a crop recommended fertilization model; data preprocessing: carrying out radiation correction, geometric correction and de-noising processing on the multispectral image; performing crop nutrient demand inversion; according to the method, the multi-spectral image of the unmanned aerial vehicle, the soil sampling data, the real-time soil humidity and the plot boundary vector data are synchronously integrated, a raster data set of a unified coordinate system is constructed, and crop nutrient requirements and environment variables are comprehensively covered. In combination with vegetation index combinations such as NDVI, RENDVI and RVI, the crop nutrient content is inverted through the PLSR algorithm, and the prediction precision R2 is greater than 0.85 and is significantly superior to that of a single index model.

The invention discloses a combined drying method for maintaining color and nutrition of mango freeze-dried products, and belongs to the technical field of food processing. The preparation method comprises the following steps: cutting mangoes, performing vacuum impregnation in a composite protection solution containing maltodextrin, trehalose, L-ascorbic acid and citric acid, then performing quick-freezing treatment, and finally adopting a combined drying process combining microwave vacuum drying and vacuum freeze drying to reduce the water content of the materials to the final requirement in two stages. The method is mainly used for efficiently producing a high-quality mango freeze-dried product which can perfectly maintain the natural color, shape and nutritional ingredients of mangoes; the technical problems that the drying period is too long, the energy consumption is high, and color browning and heat-sensitive nutritional ingredient degradation are prone to occurring in the long drying process when mangoes are treated through a traditional freeze-drying technology are effectively solved.

The invention discloses a cleaning machine and a cleaning control method thereof.The cleaning machine comprises a water tank, a water outlet valve and at least one cleaning device, the water tank is used for containing objects to be cleaned, the water outlet valve is located above the water tank, and the cleaning device is installed below the water tank in an attached mode; the cleaning control method of the cleaning machine comprises the steps that when it is determined that a to-be-cleaned article is placed in a water tank, the type of the to-be-cleaned article and the stain thickness of the to-be-cleaned article are obtained; when it is determined that the stain thickness is larger than the first preset thickness, the water outlet valve is controlled to be opened, and the cleaning device is controlled to operate according to the type and the stain thickness, so that various pollutants including stubborn pesticide residues, microorganisms and embedded dirt can be efficiently removed; fruit and vegetable epidermis damage, tissue damage or nutritional ingredient loss caused by improper cleaning force is avoided to the maximum extent, and the dual purposes of efficient and deep cleaning and maximum protection of fruit and vegetable form integrity, taste and nutritional value can be achieved.

The application discloses a kind of mixed fertilizer nutrient detection methods, comprising the following steps: obtaining the image including mixed fertilizer;Different categories of raw materials in mixed fertilizer are screened according to the image, to separate different categories of raw materials;Determine the nutrient content in mixed fertilizer according to separated raw materials.The application also discloses a kind of mixed fertilizer nutrient detection device and computer storage medium.The application separates different categories of raw materials in mixed fertilizer through the image of mixed fertilizer, and calculates the nutrient of mixed fertilizer according to separated raw materials, compared with chemical detection method, it needs shorter time for detection, and detection precision is also high, to improve the detection efficiency of fertilizer nutrient.

The present application relates to a kind of high nutrient high activity chemical fertilizer biological compound fertilizer and its preparation and application, belong to agricultural fertilizer technical field.The high nutrient high activity chemical fertilizer biological compound fertilizer of the present application includes inorganic fertilizer and microbial inoculant, the nitrogen phosphorus potassium nutrient content of the chemical fertilizer biological compound fertilizer is greater than 40%, and microbial viable count is above 200 million cfu / g, also includes microbial protective agent, the mass ratio of the microbial protective agent and microbial inoculant is ≥1.The high nutrient high activity chemical fertilizer biological compound fertilizer product of the present application realizes the deep compound of chemical fertilizer and active microorganism, has multiple efficacy of chemical fertilizer and microbial fertilizer, overcomes the neck blocking technical problem that chemical fertilizer and microbial fertilizer are incompatible in production, storage and transportation, use process, significantly improves chemical fertilizer utilization efficiency, reduces fertilizer use cost, solves the problem that microbial fertilizer cannot be generally used in field crops, integrates fertilizer yield and quality improvement, fertile soil and pollution prevention and other functions.

This utility model discloses the method of producing coffee powder substitute from green papaya Carica papaya L. includes picking, washing, peeling, slicing, drying, roasting, cooling, grinding, and packaging of the coffee powder substitute. The method of producing green papaya coffee powder substitute helps people with minimal capacity of producing coffee powder due to availability of resources and ingredients. Thus, this method helps to minimize cost in production, elevate its nutrient content, extend shelf life and reduced waste, simplify production method, and uphold environmental sustainability production. Furthermore, this method uses of 100% by weight unripped green papaya of Solo variety Caricaceae, Carica papaya. Said utility model creates another value-added product from green papaya which maximizes its nutrient for human consumption and serves as another organic-sourced coffee powder substitute from a widely available resource in the country.

The invention provides a rice storage method and application, and belongs to the technical field of rice storage. The invention provides an unhulled rice storage method. The unhulled rice is stored by adopting a low-temperature combined controlled atmosphere method. The advantages of the two storage conditions are combined, so that the nutritional ingredients of the rice are reserved to the maximum extent, the production benefit and economic benefit of the rice are improved, and the process for improving the storage quality of the rice by combining low temperature and controlled atmosphere is short in operation treatment time, low in energy consumption and suitable for application and popularization. According to the rice storage method provided by the invention, the postpartum loss of the rice is reduced, and the production benefit of the rice is improved; the product quality of the rice is improved, the market value is improved, and the quality construction of the rice is promoted; an efficient production system is favorably established, and the food safety in China is guaranteed.

The invention belongs to the technical field of skin care products, and particularly relates to an anti-wrinkle mask and a processing system and method thereof. The production method has the beneficial effect that the masks with different nutrient contents in different partitions can be produced. An anti-wrinkle mask processing system comprises a shell and a conveying table, an electric control long sliding table and an electric control short sliding table are fixedly connected to the upper side in the shell, a fixing mechanism is slidably connected to the upper side in the shell, a packaging mechanism is slidably connected to the lower side of the electric control long sliding table, and a placing mechanism is slidably connected to the lower side of the electric control short sliding table. The fixing mechanism, the packaging mechanism and the placing mechanism are sequentially arranged on the upper side of the conveying table from left to right. The anti-wrinkle facial mask comprises an outer layer film, a facial mask body and an inner layer film, and a nutrient solution is packaged on the inner side of the outer layer film.

The invention relates to the technical field of soil improvement, and discloses a banana continuous cropping obstacle conditioner application method based on soil detection, and the method comprises the step of applying different types of conditioners according to soil detection results before planting, after field planting, in the middle stage of a vegetative period, in the initial stage of a reproductive period and after harvesting in banana continuous cropping. According to the method, core indexes such as the pH value, the organic matter, the number of pathogenic bacteria and the nutrient content of soil in different stages are accurately mastered, corresponding conditioners are selected in a targeted mode, for example, when the pH value is smaller than 5.5, a composite alkaline conditioner is applied, and when fusarium oxysporum exceeds the standard, a microbial agent is applied, so that on-demand conditioning and symptomatic strategy applying are achieved; the soil secondary pollution caused by excessive application of a single conditioner is avoided, the conditioning cost is reduced, and the resource utilization rate is increased.

The application discloses a method for removing impurities from cow urine and application thereof in preparation of algal culture solution, and relates to the technical field of biological treatment. The method for removing impurities from cow urine adopts a multistage treatment system of chelating agent removal, activated carbon adsorption, physical filtration, composite microbial fermentation and precision filtration; the physical filtration adopts a stainless steel filter screen; the microbial fermentation adopts a composite microbial agent containing bacillus pasteurii, bacillus subtilis and lactobacillus plantarum; and the precision filtration adopts a microporous filter membrane. The application develops an efficient, environment-friendly and low-cost method for removing impurities from cow urine, removes macromolecular contaminant substances and harmful microorganisms and the like impurities in the cow urine, and meanwhile retains beneficial nutrient components in the cow urine; high-quality algal culture solution is prepared through the impurity-removed cow urine, the cost of the algal culture solution is reduced, and the nutrient components in the cow urine are fully utilized, so that abundant nutrient substances are provided for the growth of algae.

This invention provides a processing technology for honeysuckle black tea, belonging to the field of tea processing technology. The method includes steps such as raw material selection, simultaneous withering and rolling, using honeysuckle dew instead of ordinary water for fermentation, gradient drying, aroma enhancement, and packaging. By rationally combining honeysuckle at its bud stage and full bloom stage with fresh black tea leaves for simultaneous withering and rolling, a deep fusion of the two is achieved. During fermentation, honeysuckle dew is used instead of ordinary water to enhance the floral aroma, and microwave enzyme inactivation is used to precisely control the fermentation endpoint. The gradient drying process effectively preserves nutrients and improves the product's taste and stability. The honeysuckle black tea prepared by this invention combines the medicinal value of honeysuckle with a rich floral aroma. The black tea has a mellow taste, long-lasting aroma, and stable quality, making it suitable for industrial production and possessing good market promotion value.

The application discloses a non-water-returning fish bait and a preparation method thereof. The bait comprises the following components in percentage by weight: wheat germ powder 10-20%, snowflake powder 10-20%, shell powder 5-15%, wheat bran 10-25%, fermented rice husk powder 15-30%, and animal protein powder 8-20%. By adding various nutritional ingredients, the bait can maintain the state of entering water, and will not return water for a long time after being formed into a group. When used, the bait does not need to be kneaded and adjusted again, has good state maintaining property, and improves the fishing experience.

The utility model discloses a kind of observation devices for in-situ evaluation crop absorption fertilizer nutrient, from below to above sequentially include solution collection layer, agar layer, soil layer and gel layer;Wherein soil layer is inserted with first ion concentration sensor, solution collection layer is inserted with second ion concentration sensor.The utility model directly determines nutrient concentration (such as potassium, nitrogen ion) in soil layer and solution collection layer by ion concentration sensor, compared with the mode of traditional determination nutrient concentration, without destroying crop or harvesting plant, realize dynamic, continuous in-situ evaluation.Determination nutrient content in soil extract (not direct soil), avoid the error caused by traditional method because of soil uneven, significantly improve data accuracy.

The invention relates to the technical field of solid waste treatment, in particular to a method and a device for converting oily sludge pyrolysis residues into soil. Comprising the following steps: raw material preparation: mixing 40-50 parts by weight of oily sludge pyrolysis residues, 35-40 parts by weight of mushroom dregs, 4-10 parts by weight of vermiculite, 9-15 parts by weight of straws and 1-3 parts by weight of humic acid; performing fermentation treatment: performing composting fermentation on the prepared raw materials, controlling the fermentation temperature to be 30-60 DEG C, the water content of the materials to be 55-65% and the fermentation time to be 20-90 days, and performing intermittent stirring and ventilation in the fermentation process; according to the method for converting the oily sludge pyrolysis residues into the soil, the oily sludge pyrolysis residues can be converted into the soil improvement product with a good physical structure, rich nutritional ingredients and active microbial communities, and resource utilization of waste is achieved.

The invention discloses a non-destructive detection device and method for the moisture content of medical food, and the device comprises an outer box body, and the bottom of the outer box body is provided with a supporting assembly and a moving assembly; the sample water content detection mechanism comprises a drying box, a drying system and a condensing system; the weighing mechanism is mounted on the front side of the outer box body; the temperature and humidity monitoring module is mounted in the drying box; the image recognition modules are respectively mounted in the drying box and the weighing mechanism; the image recognition unit and the temperature and humidity monitoring module are connected with the terminal system. The medical food does not need to be smashed and sampled, the complete sample still keeps the original physical structure and nutritional ingredients after being dried at low temperature, the sample can be directly eaten by a patient after being detected, the problem of'sample waste 'of traditional destructive detection is thoroughly solved, the method is particularly suitable for small-batch customized medical food, and the clinical resource loss is reduced.

The invention discloses a water and fertilizer integrated drip irrigation and fertilization method and system for a bamboo forest based on soil detection, and belongs to the technical field of intelligent forestry and precise irrigation. According to the method, by arranging a soil multi-parameter sensor network, bamboo forest soil moisture and the content of key nutrients such as nitrogen, phosphorus and potassium are monitored in real time; based on the monitoring data, respectively calculating a deficit index reflecting the moisture condition and a demand index reflecting the multi-nutrient comprehensive demand degree; in combination with the current growth stage of the bamboo forest, dynamically determining the water demand of each irrigation and the application amount of the special fertilizer through an intelligent decision-making model, and accurately preparing a liquid fertilizer according to the actual deficit proportion of each nutrient; finally, according to the difference of water and fertilizer requirements of different areas in the land parcel, an irrigation system is controlled to achieve zoned variable precise fertilization. According to the method, collaborative intelligent decision and on-demand accurate supply of moisture and nutrients are realized, the utilization efficiency of water and fertilizer resources is remarkably improved, the labor cost and the environmental risk are reduced, and a complete technical solution is provided for modernization accurate management of the bamboo forest industry.

The invention belongs to the technical field of water-soluble fertilizer preparation, and particularly relates to a water-soluble biochar base fertilizer, which is prepared from the following raw materials in parts by mass: 30 to 40 parts of composite modified biochar, 15 to 20 parts of urea, 10 to 20 parts of potassium nitrate, 10 to 15 parts of sodium borate, 2 to 5 parts of copper sulfate, 0.5 to 1 part of zinc sulfate and 0.5 to 1 part of microbial agent. The surface of the biochar contains more oxygen-containing functional groups due to the excellent porous adsorption structure of the biochar, so that soil adsorbs a large number of positive ions, the cell biological permeability is improved, the photosynthesis of plants is enhanced, the nutrient and moisture absorption capacity of plant root systems is enhanced, and the yield and income of food crops and commercial crops are increased by matching with other nutritional ingredients.

The utility model discloses an aquaculture feed nutritional ingredient detection analyzer which comprises an installation base, a vibration assembly is arranged at the top of the installation base, a discharging plate is arranged at the top of the installation base through the vibration assembly, and fixing plates are fixedly arranged on the front side and the rear side of the discharging plate. A screen is fixedly arranged between the opposite faces of the fixing plates. The aquaculture feed is screened by the screen mesh, so that the particle sizes of detected aquaculture feed particles are kept consistent, meanwhile, the screened aquaculture feed is subjected to vibration discharging by the discharging plate, so that the aquaculture feed uniformly falls onto the conveying assembly, and the aquaculture feed is detected by the detection assembly; the influence on the accuracy of the detected sample caused by the drifting of the spectrum base line of the feed sample due to stacking is avoided, the accurate analysis on the content of each component due to the mutual overlapping interference of absorption peaks is avoided, and the influence on the accuracy of the final detected sample due to different particle sizes is avoided.

The utility model relates to the technical field of feed sampling, discloses a feed nutritional ingredient sampling device, and solves the problem that a sampling device is inconvenient to sample from different positions. Through the motor A, the lead screw A, the motor B, the lead screw B, the electric push rod A and the sampler, the motor A drives the lead screw A to rotate, so that the moving plate moves leftwards and rightwards, then the motor B drives the lead screw B to rotate, the moving frame moves forwards and backwards, and finally the electric push rod A stretches out and draws back, so that the placing plate is driven to move. In other words, the sampler is driven to move to different positions for accurate and uniform sampling, so that more accurate sampling data can be obtained.

The utility model belongs to the technical field of production batching equipment, and particularly relates to a fertilizer batching device for fertilizer production, which comprises a stirring and grinding barrel, a motor I is fixedly mounted at the top end of the stirring and grinding barrel, one end of the motor I is fixedly connected with a rotating shaft I, and a plurality of groups of fixed bases are fixedly mounted on the outer side of the rotating shaft I; telescopic rods are fixedly connected to the interiors of the multiple sets of fixed bases, springs are arranged on the outer sides of the telescopic rods, supporting plates are fixedly connected to one ends of the telescopic rods, grinding rolling wheels are arranged in the supporting plates, and an operator can visually control the feeding amount through a scale column movably installed in the feeding hopper; the quantity of fertilizer raw materials entering the stirring and grinding barrel is accurately controlled by controlling the start and stop of a motor II, so that the problem of low batching precision in the past is effectively solved, the accuracy of a fertilizer formula is ensured, various nutritional ingredients in the fertilizer are strictly mixed according to a preset proportion, the fertilizer efficiency of the fertilizer is exerted to the greatest extent, and the practicability of the fertilizer is improved.

The present application belongs to the technical field of garbage resource processing, and specifically discloses a kind of kitchen garbage pyrolysis products and its processing method and application, processing method includes the following steps: taking un-screened kitchen garbage, in turn, biomass separation, magnetic separation, squeezing water treatment, etc., then dried to constant weight, sealed storage for standby;The dried raw material is sent into airtight continuous pyrolysis reactor, and oxygen-poor pyrolysis is carried out;After the pyrolysis reaction is completed, the pyrolysis product is obtained by grinding, screening and sealing storage. The present application adopts the above-mentioned kitchen garbage pyrolysis product and its processing method and application, aiming at the technical problems of unreasonable pyrolysis process parameters, poor product quality and low resource utilization rate of kitchen garbage in the prior art, the pyrolysis temperature and residence time are optimized, and the pyrolysis product with excellent physicochemical properties, high nutrient content and good environmental safety is obtained, realizing efficient resource utilization of kitchen garbage.

The invention relates to the technical field of farmland available nutrient information online acquisition, and discloses an online farmland available nitrogen and phosphorus nutrient networking monitoring method which comprises the following steps: firstly, burying a plurality of sensor combined probes and sampling probes in different depths of farmland monitoring area soil; secondly, constructing a monitoring device at a farmland intersection to extract soil leaching solutions at different depths and monitor the content of available nitrogen and phosphorus nutrients on line; and finally, uploading a monitoring result to a cloud platform for storage, analysis and processing. According to the method, the dynamic change of available nitrogen and phosphorus nutrients in different depths of soil is monitored on line, so that farmland available nutrient information is obtained on line, accurate management of crop nutrients is realized, and the problems of hysteresis and data distortion of a traditional sampling detection method are solved; meanwhile, nutrient distribution of a monitoring area is managed in combination with an internet cloud platform, space nutrient information of a certain farming area is obtained, the fertilization mode is dynamically adjusted, the utilization rate of chemical fertilizer is effectively increased, and a scientific basis is provided for agricultural non-point source pollution prevention and control.

Described herein is a method of analyzing nutrient content in soil, the method comprising a) obtaining a soil sample, b) adding a liquid to the soil sample to form a soil slurry, c) flowing the soil slurry through a filter, whereby the filter is oriented such that the soil slurry flows downward through the filter at least partially under the effects of gravity, d) blending a reagent composition with the soil slurry to form a soil mixture, and e) measuring an absorbance of the soil mixture.

The invention relates to the technical field of mother and baby products, and particularly provides a control method of a milk shaking device and the milk shaking device. The problem that the milk shaking effect is poor due to the fact that the milk shaking rotating speed of an existing milk shaking device is not accurately controlled is solved. Therefore, the milk shaking device has a plurality of milk shaking modes with different rotating speeds, and the control method comprises the steps that the milk amount in a milk bottle is obtained; determining a milk shaking mode of the milk shaker according to the milk amount; according to the milk shaking device, the milk shaking modes with the different rotating speeds are set, the milk amount in the milk bottle is obtained, and therefore the corresponding milk shaking modes and the milk shaking rotating speeds can be matched according to the different milk amounts, and the situation that due to the fact that the milk shaking rotating speed is too low, milk is not uniform, and the milk shaking speed is too high is avoided. The problems of milk foaming, nutrition loss and the like caused by too high milk shaking rotating speed are solved, so that the milk can be uniformly mixed, nutritional ingredients are locked, and the use experience of a user is improved.