1824 results about "Nutrient content" patented technology

The invention discloses a crop sowing parameter control optimization method applied to multi-target precise fertilization, and relates to the technical field of agricultural crop sowing, and the method comprises the following steps: collecting a soil sample, carrying out spectrum scanning and analysis, combining with known soil nutrient data, building a soil nutrient content prediction model, and calculating a soil nutrient content prediction model; and combining spectral data to predict the nutrient content in the soil. According to the invention, through accurate evaluation of soil nutrient conditions and deep analysis of crop growth demands, fertilization and sowing parameters are optimized, so that crops can obtain required nutrients in the growth process, the optimized sowing depth, row spacing and plant spacing can effectively promote the development of crop roots, the absorption ability of the crops to moisture and nutrients is enhanced, and the quality of the crops is improved. And through real-time monitoring and adjustment of the intelligent fertilization equipment, the fertilization amount can be dynamically adjusted according to actual demands of crops, and the common problem of excessive or insufficient fertilizer in a traditional fertilization method is avoided.

A high-nutrient and high-activity chemical fertilizer-biological compound fertilizer, and a preparation method and application thereof are provided. The high-nutrient and high-activity chemical fertilizer-biological compound fertilizer includes an inorganic chemical fertilizer and a microbial agent. The chemical fertilizer-biological compound fertilizer has nutrient contents of nitrogen, phosphorus, and potassium of greater than 40% and a viable number of microorganisms of 200 million cfu / g or more. The chemical fertilizer-biological compound fertilizer further includes a microbial protectant, and a mass ratio of the microbial protectant to the microbial agent is ≥1.

The invention relates to the technical field of water treatment, in particular to a denitrification slow-release composite carbon source as well as a preparation method and application thereof. Comprising the following components in percentage by weight: 2-10% of hydroxy acrylic acid, 2-10% of saccharides, 5-15% of straw waste liquid, 5-15% of kitchen waste liquid, 2-10% of saccharides, 3-15% of porous volcanic ash, 5-15% of polyvinyl alcohol, 0.2-1% of inorganic salt, 1-2% of polypeptide, 0.5-1% of growth factors, 0.2-1.5% of MFC agar, 0.1-0.5% of cellulase, 0.1-0.5% of protease, 0.1-0.5% of denitrifying bacteria and the balance of water. The sum of the percentages of the raw materials is 100%. The invention has the advantages that: each nutrient component is balanced, the nutrition is comprehensive, the activity of denitrifying bacteria is improved, the number of species and community layers of a biological system of a sewage treatment plant are increased, the growth of various microorganisms is facilitated, nutrient substances can be fully utilized, and the denitrification effect is far higher than that of related carbon sources such as single methanol, glucose and the like.

The invention discloses a soilless culture nutrient solution containing a solid hydrogen supply material and an irrigation method and system. Raw materials of the soilless culture nutrient solution comprise the solid hydrogen supply material, a nutrient solution and a pH regulator. The use amount of the solid hydrogen supply material is 0.05-5 mmol / L; the dosage of the pH regulator is 0.01 to 50 mmol; all the raw materials are mixed, and the soilless culture nutrient solution with the irrigation hydrogen concentration larger than or equal to 500 ppb / L and the pH value of 5-8 is provided. On the basis of applying the soilless culture nutrient solution, the pH value and the hydrogen concentration of the soilless culture nutrient solution are monitored in real time, and the pH value and the hydrogen concentration of the soilless culture nutrient solution are adjusted and controlled by adjusting and controlling at least one of the applying amount of the soilless culture nutrient solution, the applying speed of the soilless culture nutrient solution, the using amount of a solid hydrogen supply material and the using amount of a pH adjusting agent. The hydrogen-rich nutrient solution can be controllably provided for soilless culture plants, stable release of hydrogen and proper adjustment of the pH value and nutritional ingredients are achieved, and the requirements of different crops and different growth stages are met.

The invention discloses a self-adaptive intelligent device system for water ecological restoration and water quality improvement, and particularly relates to the field of water ecological restoration, the self-adaptive intelligent device system comprises a monitoring module, a control module, a restoration module, an energy supply module and a remote communication module, and the modules are connected through signals; the monitoring module is used for monitoring the temperature, the pH value, the dissolved oxygen, the turbidity and the nutritive salt content of the water body in real time as well as the water level change, the water flow speed and the meteorological conditions; the control module analyzes and processes the monitoring data, automatically generates a control instruction according to a preset target and rule, and adjusts the operation parameters and the working state of the repair module; the restoration module is used for restoring the water body; the energy supply module is used for providing stable and reliable energy supply for the whole device system. The change trend of the water quality parameters can be predicted in advance, so that the system can take measures in advance, manual intervention is reduced, and the automation degree and the operation efficiency of the system are improved.

The invention provides a process for preparing various nutritional ingredients from oats, and relates to the technical field of deep processing of oats. The process comprises the following steps: crushing and sieving oats to obtain oat bran; the method comprises the following steps: extracting oat bran through a supercritical extraction technology to obtain pretreated oat bran and an extract, and carrying out gradient membrane treatment and membrane ultrafiltration on the extract to obtain oat oil; extracting the pretreated oat bran through continuous sectional extraction equipment; after first-stage protein extraction, second-stage dextran extraction, third-stage immobilized enzymolysis and fourth-stage filler decoloration, the materials enter a system balance tank, and membrane separation and concentration are performed to obtain the oat beta-dextran. According to the invention, various nutrient substances such as oat beta-glucan, oat protein, oat oil and the like can be extracted at the same time, the defects in the prior art are overcome, the automation degree is high, and energy conservation and emission reduction are realized.

The invention discloses a water-retaining controlled-release fertilizer and a preparation method thereof, and relates to the technical field of controlled-release fertilizers. According to the invention, the attapulgite is modified by a phosphoric acid solution, so that the surface of the attapulgite has acidic groups, and the groups can be adsorbed with positive ions in the fertilizer, so that nutrients are adsorbed and fixed on the surface of the attapulgite, and the speed of releasing the fertilizer nutrients into a soil solution is delayed; meanwhile, the modified attapulgite and some nutritional ingredients in the fertilizer can form indissolvable compounds, so that the nutrients are slowly released along with gradual dissolution of the compounds, and the fertilizer efficiency of the fertilizer is prolonged; when the modified attapulgite encounters water, the entering speed of water can be effectively slowed down, dissolution of nutrients in fertilizer particles is controlled, and then the slow and controlled release effect is achieved; and the modified attapulgite can regulate the pH value of the soil, so that the soil environment is more suitable for plant growth and slow release of fertilizer nutrients.

The invention relates to the technical field of edible fungus cultivation and soilless culture, in particular to a preparation method and application of an organic ecological soilless culture substrate for dictyophora rubrovolvata. Auxiliary materials such as perlite, vermiculite, river sand and wood chips are mixed according to the proportion, and the soilless culture substrate is prepared. The matrix is completely used for soil-covered cultivation of dictyophora rubrovolvata, compared with a traditional cultivation mode, dictyophora rubrovolvata hyphae germinate quickly and grow vigorously, the conversion rate of mushroom buds (mushroom eggs) is high, the fruiting amount is large, meanwhile, the content of nutritional ingredients is increased, limited indexes such as heavy metal are obviously reduced, and the quality of dictyophora rubrovolvata products is effectively improved. According to the method, a new mode of soilless culture of edible mushrooms is constructed.

The invention provides a red ginseng processing method capable of increasing the content of rare ginsenoside and reducing pesticide residues, and relates to the technical field of medicinal material processing, the red ginseng processing method comprises the following steps: A, steaming fresh ginseng by using atomized probiotic fermentation liquor; b, drying the steamed fresh ginseng to obtain red ginseng; the pH (Potential of Hydrogen) of the probiotic fermentation liquor is 3.0 to 4.0; the OD600 value of the probiotic fermentation liquor is 1.2-2.5, the probiotic fermentation liquor is obtained through probiotic fermentation, the fermentation liquor with the pH value being 3.0-4.0 is adopted as an acid catalyst to replace purified water, in the ginseng steaming process, steaming is conducted through the atomized probiotic fermentation liquor, conversion of ginsenoside is promoted, and meanwhile organophosphorus pesticide residues in ginseng are degraded. The method is safe, efficient, green and natural, and loss of nutritional ingredients and functional ingredients caused by cooking is avoided. The technical problems that red ginseng processed and prepared in the prior art is low in rare saponin content and poor in effect and pesticide residues exist are solved.

The invention discloses a precise fertilization method, system and device for a rice transplanter, and relates to the technical field of rice cultivation. Comprising the following steps: dividing a to-be-fertilized field into a plurality of sub-regions, analyzing the concentrations of nitrogen, phosphorus, potassium and organic matters, and taking an average value as the nutrient content of the field; the soil compactness is analyzed, and the nutrient penetration depth index is calculated in combination with environmental parameters such as soil temperature and humidity mean values; acquiring field salinity and alkalinity data, and calculating a soil nutrient effectiveness index in combination with the environmental parameters; correcting the fertilization longitudinal spacing and the fertilization depth according to the nutrient effectiveness index and the penetration depth index to obtain an accurate value; finally, the rice precise fertilization operation is completed through a rice transplanter according to the precise fertilization depth and the longitudinal distance. According to the method, soil nutrients and environmental parameters are dynamically combined, the fertilization precision is optimized, and the fertilizer utilization efficiency is improved.

The invention provides a remote sensing data analysis-combined fertilizer proportion management method and system, and relates to the technical field of remote sensing data, the method comprises the following steps: using an unmanned aerial vehicle to shoot an original data set of crops in a key growth period of a target field, and preprocessing the original data set to obtain a remote sensing image set; calculating a vegetation index according to the remote sensing image set, and generating a vegetation index map in combination with GIS software; obtaining a soil nutrient content data set and a crop nutrient content data set; performing correlation modeling on the crop nutrient content data set and the vegetation index map by using a random forest regression algorithm, and performing nutrient inversion calculation on the target field by using the model to obtain a nutrient spatial distribution map; generating a fertilizer ratio decision; spatial expression is carried out on the decision result through GIS software, and a digital fertilization prescription map is obtained. The technical problems of low efficiency, large error, incomplete coverage and slow response in the prior art are solved.

The invention relates to the field of environment and agricultural biotechnology, in particular to an application of a composite phosphate-solubilizing bacterial agent in promoting wheat growth, which is characterized in that germinated wheat is cultivated firstly, then the germinated wheat is placed in soil mixed with the composite phosphate-solubilizing bacterial agent to be cultivated, and then the germinated wheat is cultivated in soil mixed with the composite phosphate-solubilizing bacterial agent. Furthermore, the growth of wheat is promoted by the cooperation of enterobacter hormaechei HS6, pantoea agglomerans CT3 and wheat bran in the compound phosphate-solubilizing bacterium agent. Wherein the enterobacter hormaechei HS6 and the pantoea agglomerans CT3 can efficiently convert insoluble phosphorus in the soil into soluble phosphorus, the utilization rate of phosphorus in the soil is effectively increased, the use amount of chemical phosphate fertilizer is reduced, nutritional ingredients are increased for the soil, the physical and chemical properties of the soil are improved, wheat growth can be well promoted, and the application prospect is good.

The invention discloses a soil main nutrient content estimation method, system and equipment, and belongs to the technical field of soil nutrient detection. The method comprises the following steps: acquiring spectral image data of a target area, and preprocessing the spectral image data; collecting soil sample data of a target area, and preprocessing the spectral image data; determining the main nutrient content of the soil in the target area, performing correlation analysis on the preprocessed spectral image data and soil sample data and the main nutrient content of the soil, and screening a characteristic wave band of the nutrient content of the soil; based on the screened characteristic wave bands, constructing a multiple linear regression model of the soil nutrient content; and estimating the soil nutrient content of the to-be-detected area by using the multiple linear regression model, and making a soil nutrient content distribution map by using an estimation result. And a solution is provided for realizing rapid and accurate estimation of the content of main nutrients.

The invention relates to the technical field of agricultural irrigation, and discloses an intelligent agricultural water-saving irrigation and fertilization device which comprises an irrigation box, sliding rails, an irrigation assembly, a self-walking stirring assembly, a scraping and blowing assembly and a cylindrical filter part, the irrigation box is arranged on the two sliding rails, the cylindrical filter part is arranged in the irrigation box, the irrigation assembly is installed on one side of the irrigation box, and the self-walking stirring assembly is installed on the other side of the irrigation box. The spraying device is used for spraying water and fertilizer to crops; the self-walking stirring assembly comprises a rolling wheel, a rod type stirring piece and a driving piece. Water-soluble fertilizer water beads on the surfaces of seedlings are scraped and blown through the scraping and blowing assembly, water-soluble fertilizer attached to the surfaces of leaves and stalks of the seedlings can be effectively removed and shaken off to the bottoms of the seedlings, and therefore waste of the water-soluble fertilizer is reduced, meanwhile, the water-soluble fertilizer can directly act on root systems of the seedlings and is fully absorbed by crops, and the water-soluble fertilizer can be applied to the roots of the seedlings. The utilization rate of the water-soluble fertilizer is increased, and the problem of volatilization of nutritional ingredients caused by strong quick-acting property and short lasting period of the water-soluble fertilizer is reduced.

The invention discloses a soil ecological restoration method suitable for plant transplantation and a plant transplantation method, and relates to the technical field of soil ecological restoration, and the method comprises the following specific implementation steps: S1, soil evaluation; s2, pollutant treatment; s3, soil improvement; s4, covering and protecting soil; in the step S1, the structure, texture, pH value, nutrient content, pollutant level and the like of the soil are comprehensively analyzed; the method comprises the following steps: testing the pH value and saline-alkali content of polluted soil needing planting, digging away soil with high saline-alkali content, and backfilling soil with low saline-alkali content; or an isolation system is arranged, materials such as lime and slag are used for isolating saline-alkali soil from alien soil, films and the like are transversely used for isolating surrounding saline-alkali soil, and the cost is low. According to the soil ecological restoration method suitable for transplanting the plants and the plant transplanting method, the water content and permeability of the soil are improved through layer-by-layer improvement of the soil, the physical properties of the soil are improved, and growth of the plants is facilitated.

The invention discloses a winter wheat field soil fertility evaluation data processing method based on comprehensive weight calculation, and relates to the technical field of data processing, and the method comprises the steps: S1, collecting nutrient content and moisture retention data from field soil through a sensor network, performing grouping processing on the acquired nutrient content and moisture retention data by adopting decision node splitting and entropy calculation to obtain a soil fertility layering result; s2, according to a soil fertility layering result, acquiring root depth and leaf moisture content indexes of the winter wheat in different layers of soil from crop monitoring equipment, analyzing association strength of the root depth and leaf moisture content indexes and fertility layering by adopting leaf node classification and feature selection standards, and determining a fertility contribution coefficient; according to the winter wheat field soil fertility evaluation data processing method based on comprehensive weight calculation, efficient resource allocation and stable yield are realized, and the drought resistance and resource utilization efficiency of winter wheat in a drought environment are remarkably improved.

The application discloses a kind of traditional Chinese medicine rose flower fermentation method and fermentation composition, it is related to fermentation technical field.The traditional Chinese medicine rose flower fermentation method includes: traditional Chinese medicine rose flower is crushed, mixed with water, and after sterilization, fermentation base material is obtained, yeast peptone solution is added, as blank fermentation pre-liquid;Activated rhamnolipid lactose casein bacillus liquid is inoculated in blank fermentation pre-liquid, and fermentation is carried out.The traditional Chinese medicine rose flower fermentation method provided by the application uses traditional Chinese medicine rose flower as raw material, and utilizes activated rhamnolipid lactose casein bacillus liquid to ferment, without adding exogenous sugar in the fermentation process, but before fermentation, yeast peptone is added first, the addition of yeast peptone can supplement nitrogen source for the fermentation process of subsequent activated rhamnolipid lactose casein bacillus liquid, so that the nutrient content of fermented rose flower is more, and component conversion is more thorough.It is favorable to improve the DPPH free radical scavenging rate, total phenol content and antioxidant property of fermentation composition.

The invention belongs to the technical field of biology, and particularly relates to plant growth promoting performance of two alkali-producing strains, namely, Plutalophilous rhizobium and Pseudomonas moorsei, and application of the two alkali-producing strains to cadmium fixation and fertility increase of soil. The invention provides a multifunctional alcaligenes, which is any one of the following strains: Pentazobacterium mionense WW22, the preservation number of which is CGMCC (China General Microbiological Culture Collection Center) No. 27718, and the preservation number of which is CGMCC No. 27718. The invention discloses pseudomonas mohnii WW2, and the preservation number of the pseudomonas mohnii WW2 is CGMCC (China General Microbiological Culture Collection Center) No.27716. The invention also provides application of the strain for fixing cadmium and increasing fertility. The strain disclosed by the invention can promote the reduction of the effectiveness of cadmium in soil and increase the nutrient content in the soil, provides a technical basis for ensuring the safe production and utilization of crops in a cadmium-polluted farmland, and has a wide application prospect.

The invention belongs to the field of sewage treatment, and particularly relates to a preparation method and application of a biological composite carbon source, and the preparation method comprises the following steps: mixing waste beer yeast liquid and biodiesel byproducts, adding an enzyme preparation, carrying out mixing reaction, and separating out supernatant to obtain the biological composite carbon source. The biological composite carbon source disclosed by the invention is low in production cost, rich in nutritional ingredients and high in adaptability, and has long-term effectiveness, high denitrification rate and denitrification effect.

The invention relates to the technical field of agricultural precise management, and discloses an unmanned aerial vehicle precise variable rate fertilization method, which comprises the following steps: collecting vegetation indexes and color feature data of crops in a target plot through an unmanned aerial vehicle carrying a multispectral sensor and an RGB camera; acquiring soil characteristic data of the target land parcel, wherein the soil characteristic data comprises nitrogen, phosphorus and potassium nutrient content, humidity and pH value in soil; the invention further provides an unmanned aerial vehicle precise variable rate fertilization system which comprises a data acquisition module, and the data acquisition module is configured to acquire vegetation indexes, color characteristics, soil characteristics and meteorological data of the target land parcel through a multispectral sensor, an RGB camera, a soil sensor and a meteorological sensor carried by the unmanned aerial vehicle. Through multi-source data fusion, dynamic fertilization adjustment and path optimization, precise variable fertilization is realized, the fertilizer utilization efficiency is improved, the scientificity and efficiency of fertilization operation are improved, and meanwhile, the environmental influence is reduced.

The invention relates to the technical field of food wall-breaking equipment, and particularly discloses a food wall-breaking powder preparation technology which comprises a cup body, a wall-breaking knife I and a wall-breaking knife II are arranged in the cup body, and the wall-breaking knife II is obliquely arranged relative to the wall-breaking knife I. The food wall-breaking powder preparation technology further comprises a double-shaft transmission assembly in transmission connection with a linkage shaft sleeve and a blade assembly. The linkage shaft sleeve is driven by a motor arranged in the base, and the linkage shaft sleeve and the double-shaft transmission assembly synchronously rotate in opposite directions through transmission of the double-shaft transmission assembly, so that the wall breaking knife I and the wall breaking knife II synchronously rotate in opposite directions when wall breaking powder is prepared. The wall-breaking knife I and the wall-breaking knife II which are distributed up and down are arranged in the cup body, and the wall-breaking knife I and the wall-breaking knife II rotate in the synchronous direction to be matched, so that food materials can be better cut into finer particles, the wall-breaking effect is improved, the food materials are more fully cut and crushed in the wall-breaking machine, more nutritional ingredients are released, and the food materials can be better broken. The preparation effect of the wall-broken powder is improved.

The present invention provides a hydrangea oral liquid and a preparation method thereof, and relates to the field of biological fermentation technology. The preparation method of the hydrangea oral liquid of the present invention comprises: crushing the dried hydrangea fruiting bodies, mixing with glucose and water, ultrasonic treatment, obtaining a mixed material, inoculating a composite bacterial agent for fermentation, adding a composite enzyme for enzymolysis, filtering and concentrating, and obtaining the hydrangea oral liquid. The present invention combines hydrangea crushing with ultrasound, improves the dissolution of nutrients in hydrangea, and shortens the fermentation time; the composite bacterial agent fermentation can significantly increase the polysaccharide substances in the hydrangea oral liquid, and enhances the antioxidant effect; the composite bacterial agent fermentation of hydrangea and the composite enzyme enzymolysis can significantly improve the mushroom smell caused by the hydrangea itself. The experimental results show that the hydrangea oral liquid prepared by the method of the present invention can improve the mushroom smell caused by hydrangea, increase the polysaccharide content, and enhance the antioxidant performance.

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 present application relates to the field of biotechnology, and discloses a strain of Bacillus velezensis, which is classified and named Bacillus velezensis ZM2024, and the deposit number is CCTCC NO: M2024695; the deposit date is April 15, 2024, and it is deposited in the China Center for Type Culture Collection. The Bacillus velezensis in the present application has good stress resistance and safety, high production of cellulase, and can significantly improve the nutritional content and feeding value of high-fiber plant feed raw materials such as palm meal; at the same time, the Bacillus velezensis can inhibit diarrhea-causing pathogens of livestock and poultry, and is suitable for livestock and poultry feed processing and feeding. In addition, the present application also discloses the use of the above-mentioned Bacillus velezensis and a feed.

The invention discloses a low-carbon freshwater fish feed added with fermented bamboo powder and application of the low-carbon freshwater fish feed, and belongs to the technical field of aquatic animal feeds. The low-carbon freshwater fish feed capable of reducing the fat rate of fish bodies and / or reducing nitrogen and phosphorus emission is prepared from the fermented bamboo powder, and the content of vitamins, enzymes and growth factors in the feed can be increased by adding the fermented bamboo powder, so that the freshwater fish bodies have good anti-pathogenic activity; the absorption and utilization of the freshwater fish on nutritional ingredients and fiber-rich ingredients in the feed are improved, so that the aim of reducing the emission of nitrogen and phosphorus is fulfilled; meanwhile, the fermented bamboo powder is used for partially replacing soybean meal in the freshwater fish feed, so that the dosage of feed raw materials such as the soybean meal is reduced, the intestinal health of the freshwater fish is improved, the muscle quality of the freshwater fish is improved, the earthy smell in muscles is reduced, the body type of the freshwater fish is also improved, and the fat content in abdominal muscles is reduced.

The invention provides an arid region saline-alkali soil treatment method which comprises the following steps: step 1, region division: dividing saline-alkali soil into a planting region and a saline-alkali water collection and treatment region; 2, a planting area is constructed, the planting area is composed of an original layer, a first water drainage and salt guide layer, an air permeation prevention layer, a second water drainage and salt guide layer and a planting layer from bottom to top, the air permeation prevention layer can prevent salt from ascending, and the water drainage and salt guide layer can drain saline-alkaline water in soil; and step 3, constructing a saline-alkaline water collection and treatment area, and performing filtration and electro-adsorption salt reduction on the collected saline-alkaline water to realize recycling of the saline-alkaline water. Layered improvement of the planting area is combined with an integrated structure of saline-alkali water collection, ion adsorption and storage, the salt content of soil is reduced, the nutrient content of the soil is increased, and all-round treatment and utilization of'blocking ', 'discharging', 'treating 'and'using' of the saline-alkali water are achieved.

The invention relates to the technical field of food preservation, in particular to a vegetable preservation method based on an ultralow-temperature quick-freezing technology. Comprising the following steps: carrying out cleaning and impurity removal treatment on vegetables to be preserved; rapidly cooling the treated vegetables to a temperature ranging from-40 DEG C to-78 DEG C by using an ultra-low temperature technology for not less than 10 minutes; putting the quick-frozen vegetables into a vacuum package, and keeping the freshness of the vegetables in a low-oxygen environment; a natural antioxidant is added in the packaging process, so that the storage life of the vegetables is further prolonged. According to the vegetable fresh-keeping method based on the ultralow-temperature quick-freezing technology, the freezing technology and packaging materials are optimized, so that the storage time of the vegetables is effectively prolonged, and meanwhile, the original color, texture and nutritional ingredients of the vegetables are kept.

The invention relates to the field of agricultural fertilizers, in particular to an organic compound fertilizer for preventing and treating diseases and insect pests of spring rapes and a preparation method of the organic compound fertilizer. Diversified raw material compositions in the organic compound fertilizer for preventing and treating the diseases and insect pests of the spring rapes provide rich and comprehensive nutritional ingredients; the fertilizer can supply major elements such as nitrogen, phosphorus and potassium for growth of spring rapes, meets the requirements of the spring rapes for nutrients in different growth stages, prevents various soil-borne diseases, reduces the morbidity of the spring rapes through multiple insect killing and preventing mechanisms, reduces yield reduction loss caused by diseases and insect pests, and improves the yield of the spring rapes. In addition, a good soil environment can be created, the release period of fertilizer nutrients is prolonged, the utilization rate of the fertilizer is increased, various negative effects caused by large-scale use of traditional chemical pesticides are reduced, the utilization rate of effective components in the organic compound fertilizer is increased to the maximum extent, the photosynthesis of the spring rape is promoted, and the yield and quality of the spring rape are improved; wide application prospects are realized.

The invention relates to the technical field of agricultural fertilizers, and particularly discloses a polypeptide fish protein flushing water-soluble fertilizer and a preparation method thereof, the water-soluble fertilizer is prepared from the following raw materials: unrotten small fish or fish sewer, edible cane sugar or brown granulated sugar, a self-prepared fish protein enzymolysis agent, a self-prepared fish protein anaerobic fermentation inoculant and water; the preparation method comprises an enzymolysis stage and a fermentation stage. The compound fertilizer can be used as a nitrogen fertilizer to replace a traditional chemical nitrogen fertilizer, or is matched with a trace element fertilizer in a compound fertilizer to be used in crop planting; the water-soluble fertilizer has the beneficial effects that the water-soluble fertilizer can supplement soil protein amino acid fertilizer nutrition and increase the content of nutritional ingredients in crops, fermented polypeptide micromolecule sugar can be directly absorbed by the crops to improve the taste, ecological organic planting is realized, meanwhile, the planting cost is reduced, and the water-soluble fertilizer is suitable for fruit and vegetable planting families, farms, picking gardens, greenhouse farmers and the like, is simple and easy to operate, and is suitable for popularization and application. Raw materials are easy to collect, low in cost and obvious in effect.

The invention discloses a feed for improving earthworm breeding yield and a preparation method thereof, and belongs to the technical field of earthworm breeding, the feed comprises the following components: 30-50 parts of fermented livestock and poultry manure, 20-30 parts of crop straw, 10-20 parts of soybean curb residue, 10-15 parts of corn flour, 5-10 parts of wheat bran, 3-5 parts of bone meal, 2-4 parts of shell powder, 0.5-1 part of a microbial agent, 1-2 parts of brown sugar, and a proper amount of water. The fermented livestock and poultry manure is rich in various mineral elements and organic nutrients such as nitrogen, phosphorus and potassium, and is an important source of nutrients required by earthworm growth; the crop straws are rich in cellulose and can promote intestinal peristalsis of the earthworms and help digestion; the soybean curb residues, the corn flour and the wheat bran are rich in nutritional ingredients such as protein and carbohydrate, and sufficient energy is provided for the earthworms; the bone meal and the shell powder contain a large amount of mineral substances such as calcium and phosphorus, so that the development of bones and bodies of the earthworms is facilitated; the microbial agent can regulate microbial flora in the feed and promote the absorption and utilization of the earthworms to nutrient substances.