453 results about "Nutrient absorption" patented technology

The invention relates to the technical field of temperature regulation, in particular to an intelligent root temperature regulation system for hydroponic crops and an implementation method thereof, and the system comprises a root system oxygen consumption monitoring module, an osmotic pressure state monitoring module, a root system metabolism state analysis module, a root temperature parameter reconstruction module and a nutrient solution circulation linkage module. According to the method, the metabolic rhythm state of the root system is judged through oxygen consumption rate gradient difference calculation and trend analysis, the cell injury risk is recognized through two-parameter logic judgment by combining the osmotic pressure change amplitude and the oxygen consumption trend, and the target root temperature is selected through gray correlation analysis according to the abnormal triggering temperature and the stable state temperature; a regulation and control instruction is generated, a PID algorithm is called in combination with real-time circulation flow velocity data to adjust the pump speed, closed-loop dynamic matching of a root temperature set value and a flow velocity behavior is achieved, the adaptability of root temperature response is enhanced, the real-time regulation and control capacity for metabolic imbalance is improved, and the stability and the moisture and nutrient absorption efficiency of a water culture environment root system are effectively improved.

The invention relates to the technical field of intelligent control, in particular to a monopotassium phosphate intelligent control method and system.The method comprises the following steps that rhizosphere phosphorus and potassium concentration changes are obtained, whether the rhizosphere phosphorus and potassium concentration changes are in a critical rate interval or not is judged, an effective absorption time period identifier is generated, and an organ amplification ratio is analyzed to judge a cooperation period; and extracting a stalk concentration ratio, comparing the stalk concentration ratio with a reference interval to generate an application inhibition identifier, fusing information to judge a fertilization window, adjusting the concentration according to the root hair amplification and the water consumption rate, and generating a control instruction set. According to the method, the effective time period of phosphorus and potassium nutrient absorption of the crops is determined through crop rhizosphere phosphorus and potassium ion concentration difference calculation and average treatment, the objective interval of crop nutrient absorption rate indexes is defined, blind fertilization is avoided, the pertinence and accuracy of nutrient absorption and utilization of the crops are enhanced, the excessive application state of nutrient elements is dynamically identified, and the crop quality is improved. The risk of excessive nutrients caused by nutrient enrichment of crops is prevented, and resource waste and environmental burden are effectively reduced.

The invention relates to the field of microbial fertilizers, in particular to a microbial fertilizer containing a composite biological agent and a preparation method of the microbial fertilizer, which are used for solving the problems that the existing microbial fertilizer has short survival time in soil, the nutrient release speed is difficult to control, and the effects of improving the soil environment and promoting plant growth have certain limitations. According to the preparation method, root development and nutrient absorption of crops can be effectively promoted by adding the composite biological agent, the yield and quality of the crops are improved, a membrane material with good mechanical strength and slow release performance is formed through crosslinking of sodium alginate and chitosan, effective slow release and long-term application of microorganisms and fertilizer are achieved, and the yield and quality of the crops are improved. The utilization rate of the fertilizer is increased, the validity period of the fertilizer is prolonged, the usage amount of the fertilizer is reduced, the growth and yield of crops are effectively improved, and the fertilizer has a good agricultural application prospect.

The invention discloses a regulation and control method and system for rice production, relates to the technical field of agricultural production and intelligent control, is used for solving the problems of low production efficiency, uneven crop growth and unstable quality, and calculates a light-temperature matching coefficient through real-time monitoring of a root activity index and a leaf surface transpiration amount in combination with illumination intensity and canopy temperature difference. The nutrient absorption capacity of the rice is evaluated by detecting the rhizosphere conductivity change and the soil nutrient content, when the rice growth state is poor and the resource regulation capacity is high, an enhanced regulation and control mechanism is automatically entered, and regulation and control increasing levels are set according to the current rice canopy carbon dioxide exchange rate and the current air flow disturbance index; the resource supply coefficient is calculated and the regulation rate is determined through regulation and control level increase, so that the resource supply is optimized, and the agricultural production efficiency and the resource utilization rate are improved.

The present disclosure provides compositions, kits, and systems comprising engineered bacteria and agricultural biologics, and methods of using the same to treat plants and improve one or more plant beneficial traits, such as plant yield, nutrient uptake, and resistance to abiotic or biological stress. Using the compositions, kits, and systems disclosed herein can further 5 reduce fertilizer usage. The present disclosure also proposes methods of treating plants using the engineered bacteria with agricultural biologics.

The invention discloses a fertilization recommendation method combined with a rice seedling raising fertilizer carrying technology in the technical field of agricultural production. The fertilization recommendation method comprises the following steps: S1, acquiring geology and seedling raising states; s2, presetting rice growth requirements; s3, calculating to obtain an additional nutrient amount; s4, dividing the growth cycle of the rice; s5, recommending the fertilization amount according to stages; according to the method, nutrient supply of seedling raising fertilizer is brought into a whole-growth-period fertilization plan, and accurate matching is achieved; on the premise that the yield is not affected, the fertilizing amount in the early and whole growth periods of rice is remarkably reduced, and the fertilizer utilization rate is increased; through dynamic matching of the early-stage fertilizer loading and supplying amount and the middle and later-stage fertilizer needing amount, resource waste caused by excessive fertilization is avoided, and the fertilizer cost is reduced; the nutrient proportion is scientifically distributed according to the nutrient absorption efficiency of each stage, and the fertilizer utilization rate is increased; the final yield can be improved; soil fertility indexes and historical data are combined, the profit and loss trend of soil nutrients is recognized, and cyclic utilization of the soil nutrients is achieved through dynamic matching of the sustained and controlled release fertilizer and the organic fertilizer.

The invention relates to the technical field of fertilizers, in particular to an environment-friendly water-soluble fertilizer containing a seaweed extract and polyglutamic acid. The water-soluble fertilizer is prepared by preparing seaweed oligosaccharide and double-grafted poly-L-gamma-sodium glutamate and compounding and complexing the seaweed oligosaccharide and the double-grafted poly-L-gamma-sodium glutamate, has the characteristics of low salting-out, high stability, no precipitation, good slow release performance and the like, and can continuously release nutrients and keep a solution clear and transparent under a low-salt condition; and because the polyglutamic acid and seaweed extract compound drip irrigation agent has the chelation and water retention characteristics of the polyglutamic acid and the natural growth promoting effect of the seaweed extract, the crop rhizosphere nutrient absorption efficiency and stress resistance are remarkably improved, the compound drip irrigation agent is suitable for drip irrigation and water and fertilizer integrated application of greenhouse vegetables, fruit trees and field crops, and the comprehensive effects of high efficiency, low salt load and environment friendliness are achieved.

The invention relates to the technical field of biological medicine, and discloses a formula of compound probiotic enzyme powder for promoting gastrointestinal microecological balance and nutrient absorption, by constructing a cross feeding system of bifidobacteria, lactobacillus and butyric acid bacteria and combining a stomach-intestine stage enzyme activity gradient adaptation strategy and a microenvironment response type double-layer embedding technology, the gastrointestinal microecological balance and nutrient absorption can be promoted, and the gastrointestinal microecological balance and nutrient absorption can be promoted. And cross-scale synergy of flora metabolism, substrate conversion and targeted release is realized. Wherein the sodium alginate-pectin composite embedding structure forms a pH buffer micro-area in a gastric acid environment, and proton pump gene expression of the acid-resistant strain is synchronously triggered; the prebiotics compounding and step-by-step enzymolysis process breaks through a closed-loop path of fiber degradation-flora proliferation-short-chain fatty acid generation. Compared with a traditional single-strain intervention scheme, the method has the advantages that double limitations of flora function splitting and process isolation are broken through, and systematic technical advantages are formed in the aspects of improving flora colonization stability, enhancing metabolite conversion efficiency and inhibiting pathogenic bacterium colonization.

The invention discloses a nutrition improvement nursing method for a gastrointestinal digestion patient, and relates to the field of medical monitoring, and the method comprises the following steps: analyzing to obtain the current absorption amount of to-be-supplemented nutrient elements of the gastrointestinal digestion patient; analyzing to obtain a health influence coefficient of the to-be-supplemented nutrient elements on the gastrointestinal digestion patient; acquiring an absorption promotion coefficient between the to-be-supplemented nutrient elements and other to-be-supplemented nutrient elements; forming a to-be-updated recipe of the current recipe; calculating a health contribution value of the to-be-updated recipe to the gastrointestinal digestion patient; and calculating the coincidence proportion of the to-be-updated recipe relative to the current recipe, and performing recipe change on the current recipe. According to the method, the health influence coefficient is obtained through analysis, the absorption promotion coefficient is obtained, the to-be-updated recipe is formed, the corresponding health influence is obtained according to the deficiency of different to-be-supplemented nutrient elements, and the mutual influence condition existing between the different to-be-supplemented nutrient elements is also considered, so that the prediction result of nutrient absorption is closer to the reality.

The invention discloses a microbial agent for improving the yield and quality of strawberries and a preparation method and application thereof, and belongs to the technical field of microorganisms. The microbial agent comprises the following raw materials in parts by weight: 40-50 parts of a compound microbial agent, 0.3-0.5 part of xanthan gum, 1.5-2 parts of glycerol, 4-5 parts of a citric acid-sodium citrate buffer solution, 1-1.5 parts of potassium humate, 0.3-0.5 part of monopotassium phosphate, 0.2-0.3 part of chelated calcium magnesium and the balance of water, wherein the total parts by weight of the raw materials are 100; the compound microbial agent is prepared from arthrobacter Xinjiang, linear Prussella bursa-pastoris and bacillus coagulans. The microbial agent disclosed by the invention can be used for effectively preventing and treating strawberry diseases, including root rot, fusarium wilt, gray mold and anthracnose; through the synergistic effects of hormone secretion, nutrient activation, disease inhibition and the like, the microbial agent comprehensively promotes root development and nutrient absorption of strawberry plants, promotes strawberry growth, remarkably improves the strawberry yield and fruit quality, and meanwhile remarkably reduces the strawberry storage rotting rate.

The invention relates to the field of compound fertilizer analysis, and discloses an analysis method and device for combining polyglutamic acid and a compound fertilizer, computing equipment and a storage medium, and the method comprises the following steps: determining a growth cycle and a critical period of crops of which a fertilization scheme needs to be analyzed; determining environment conditions and nutrient absorption characteristics of crop growth; determining types of fertilizer raw materials and fertilization modes according to environmental conditions and nutrient absorption characteristics; combined fertilization schemes corresponding to different growth cycles are generated according to fertilizer raw material types and fertilization modes; inputting the plurality of combined fertilization schemes into a first fertilizer effect prediction model to obtain evaluation results of the plurality of combined fertilization schemes; and determining an optimal combined fertilization scheme according to the evaluation results of the plurality of combined fertilization schemes. According to the application, a polyglutamic acid and compound fertilizer combination scheme is designed according to crop requirements, and then a scheme with an optimal crop growth effect is selected according to the evaluation model, so that crops can obtain required nutrients, and the production cost is reduced.

The invention discloses a fruit and vegetable nutrition dynamic monitoring and intelligent fertilizer supplementing system, belongs to the field of fruit and vegetable planting management systems, replaces a traditional manual observation or regular soil sampling detection mode, effectively avoids subjectivity and hysteresis of manual judgment, can reflect the current nutrition state of crops in real time, provides accurate data support for dynamic nutrition management, and improves the management efficiency. The problem that in the prior art, real-time management is difficult to achieve according to the current nutrition state of crops is solved, meanwhile, accurate matching of the fertilizer type, concentration and dosage with the crop growth stage and environmental conditions is achieved in the fertilizer supplementing process, a traditional one-step nutrition supply mode is avoided, the nutrient absorption efficiency is remarkably improved, and healthy growth of the crops is promoted.

The invention provides a precise fertilization method and device for potatoes. The method comprises the following steps: acquiring a remote sensing image of a target growth stage of the potatoes; inputting the remote sensing image into a trained nutrient absorption amount inversion model, and obtaining the actual nutrient absorption amount corresponding to each pixel output by the nutrient absorption amount inversion model; based on the total nutrient demand and the actual nutrient absorption amount corresponding to each pixel, determining the nutrient deficiency amount corresponding to each pixel; and based on the nutrient deficiency amount corresponding to each pixel, by taking the plot corresponding to the pixel as a unit, carrying out precise fertilization on the potatoes. According to the precise fertilization method and device for the potatoes, the QUEFTS model and nutrient deficiency remote sensing diagnosis are combined, the nutrient deficiency amount corresponding to each pixel is determined, precise fertilization is conducted on the potatoes with the land parcels corresponding to the pixels as units, and the utilization rate of the potato fertilizer is increased.

The invention discloses an element liquid fertilizer for promoting nutrient absorption and a preparation method thereof, and belongs to the technical field of fertilizers. Comprising monoammonium phosphate; urea; potassium nitrate; cake fertilizer leach liquor; trace elements; a wetting agent; a stabilizer; a biological agent; an adsorbent; deionized water; the preparation method of the adsorbent comprises the following steps: A1, taking loofah sponge powder, and removing lignin and hemicellulose to obtain loofah sponge cellulose powder; a2, mixing the loofah sponge cellulose powder, deionized water, a chitosan solution and plant ash, mechanically pulping uniformly, performing vacuum freeze-drying treatment to form holes, crushing and grinding to obtain the adsorbent, root development can be promoted, elongation and thickening of stems are promoted, the photosynthetic rate of plants is increased, and the crop yield is increased.

The invention provides infant rapid brewing rice flour based on enzymolysis and superfine water grinding and a preparation method thereof, and belongs to the technical field of food processing. Rice is subjected to raw material differential temperature pretreatment and multi-stage hydration pulping, and a stable three-dimensional microscopic network structure with starch particles as filler and soluble protein and colloid as a continuous phase is constructed; then, food-grade lactic acid bacteria pre-fermentation is combined with sequential action of various enzymes, and starch and protein are subjected to mild directional hydrolysis under the condition of simulating dynamic pH of gastrointestinal tract digestion, so that the nutritional and digestible infant healthy rice flour is prepared, and the problems that the rice flour is easy to agglomerate, non-uniform in dispersion and low in nutritional value during brewing are solved. The digestion and absorption efficiency of macromolecular nutrient components such as starch and protein is relatively low, and the nutrition and flavor of the product mainly depend on exogenous addition, so that the naturalness and functionality are insufficient. The rice flour disclosed by the invention has excellent reconstituability and nutrient absorption rate, and is suitable for being used as a healthy nutritional complementary food for infants of 6-36 months.

The invention relates to a shiny-leaved yellowhorn cultivation regulation and control method, device and equipment based on digital twinning and a medium. The method comprises the steps that spectral signals of shiny-leaved yellowhorn plants are collected in real time through an optical fiber sensor, and a nutrient prediction model driven by machine learning is built in combination with historical data; generating an initial fertilization curve based on the current spectral signal and a preset fertilization function database, and driving the intelligent sprayer to execute precise fertilization; furthermore, a digital twinning technology is utilized to fuse and update a spectral signal and a shiny-leaved yellowhorn nutrient absorption model, the influence of different fertilization strategies on nutrient absorption is dynamically simulated, the element ratio is optimized, and a closed-loop regulation and control scheme is generated. According to the method, the problems of resource waste and yield fluctuation caused by fertilization decision lag, model stiffness and element antagonism effect in the traditional technology can be solved through real-time sensing of the plant nutrient state, dynamic adjustment of the fertilization strategy and multi-element collaborative optimization, and the precision and ecological economic benefits of shiny-leaved yellowhorn cultivation are remarkably improved.

The invention belongs to the technical field of chemical fertilizer preparation, and discloses an efficient water-soluble fertilizer based on polyglutamic acid and a preparation method thereof.The efficient water-soluble fertilizer comprises the following raw materials: polyglutamic acid which is prepared through a microbial fermentation method, has the molecular weight range of 500-1500 kDa and the purity of more than or equal to 95% and serves as a core water and fertilizer retention and nutrient slow release carrier; the high-quality fulvic acid is derived from weathered coal or biochemical extraction, the content of the fulvic acid is greater than or equal to 50%, and the fulvic acid is used for promoting root development and nutrient absorption; the humic acid takes young lignite as a raw material, the content of the humic acid is greater than or equal to 70%, and the humic acid is used for improving the granular structure and microbial activity of soil; the calcium element is added in the form of soluble calcium salt such as calcium nitrate and calcium amino acid chelate, the calcium content is larger than or equal to 10%, and the calcium element is used for enhancing the stability and stress resistance of cell walls of crops in terms of CaO; and the acid-base equilibrium stress-resistant factor comprises a silicon nanowire. The invention provides an efficient water-soluble fertilizer based on polyglutamic acid and a preparation method of the efficient water-soluble fertilizer. The water-soluble fertilizer has higher fertilizer utilization rate, better crop growth promoting effect and stronger stress resistance.

The invention discloses a compound microbial organic fertilizer and a preparation method thereof, and belongs to the technical field of compound microbial organic fertilizers. The compound microbial organic fertilizer is prepared from the following raw materials in parts by weight: 8-12 parts of a microbial agent, 30-35 parts of livestock and poultry manure, 20-25 parts of crop straws, 10-15 parts of humic acid, 10-12 parts of bagasse carbon, 3-5 parts of rumen bypass fat powder, 3-5 parts of molasses and 1-3 parts of chitosan oligosaccharide. According to the compound microbial organic fertilizer, the nitrogen-fixing pseudomonas, the streptomyces elongisporus and the paenibacillus polymyxa are selected to be compounded, and the three strains comprehensively promote root development, nutrient absorption and stress resistance of strawberry plants through the synergistic effect of nitrogen fixation, nutrient activation, hormone secretion and disease inhibition. The compound microbial organic fertilizer can effectively promote growth of strawberry plants, improve the quality of strawberries, increase the yield, reduce chemical fertilizer and pesticide residues, reduce the risk of soil pollution and meet the requirements of consumers for safe and organic strawberries.

A novel hollow tine aerator has been developed that features a bevel tip and bevel ejection system for enhanced soil penetration and seamless soil core removal. This innovative design addresses the limitations of conventional aerators, enabling efficient soil aeration and improved turfgrass health. The bevel tip design, with its inclined cutting edge, minimizes resistance and facilitates smoother penetration of hard or compacted soil. The bevel ejection system, comprising an angled base on top of the tine, guides the soil core upwards and exits through the open groove, eliminating the need for manual intervention. The integration of the bevel tip and bevel ejection system offers several benefits over conventional aerator designs. Enhanced soil penetration enables deeper aeration, promoting root growth and nutrient uptake. Seamless soil core removal eliminates the need for manual dislodgement, saving time and labor. Reduced operator fatigue enhances comfort and efficiency during aeration tasks.

The invention belongs to the technical field of tree planting, and discloses an afforestation seedling raising device which comprises a base and further comprises a seedling raising assembly fixedly installed in the base and used for raising seedlings. The plastic film is placed at the top of the base, so that the plastic film forms the planting groove located in the cultivation pot, soil and the cultivation pot are separated through the plastic film, seeds can be placed in the soil of the groove for seedling raising, and after seedling raising of seedlings is completed, the plastic film is cut by means of a cutting tool such as an art knife or scissors. Each groove forms an independent individual, the seedlings in the cultivation pot can be taken out through the independent grooves formed by the plastic film, and the phenomenon that roots of the seedlings grow vigorously in the seedling cultivation process and are tightly attached to the inner walls of the seedling cultivation grooves, so that fibrous roots are broken due to excessive force in the taking-out process is avoided; the water and nutrient absorption capacity of seedling transplanting is improved, and the survival rate of seedlings is guaranteed.

The invention discloses a bacterial strain for antagonizing multiple pathogenic fungi of potatoes and simultaneously promoting growth and application of the bacterial strain, and relates to the field of microbial agents, the bacterial strain is bacillus wiedmannii Bw34, the bacterial strain is preserved in China General Microbiological Culture Collection Center, the preservation address is No. 3, No.1 yard, Beichen West Road, Chaoyang District, Beijing, the preservation date is November 11, 2024, and the preservation number is CGMCC NO. The preservation number is CGMCC (China General Microbiological Culture Collection Center) The compound is used for preparing a fungicide for antagonizing potato pathogenic fungi and a fungicide for promoting potato growth. The Bw34 has the effect of comprehensively preventing and treating potato soil-borne diseases, meanwhile, potato growth and nutrient absorption are promoted, and the application prospect is good.

The invention provides a temperature-increasing oxygen-increasing agent for waterlogging type medium and low yield fields and a preparation method of the temperature-increasing oxygen-increasing agent. The temperature-increasing oxygen-increasing agent is prepared from the following raw materials in parts by weight: 80 to 130 parts of tea seed cakes, 80 to 110 parts of aged chicken manure, 140 to 180 parts of straw powder, 7.7 to 10 parts of beneficial bacteria, 0.3 to 0.8 part of alginate oligosaccharide, 9.5 to 12 parts of silicon-calcium-magnesium ore powder, 200 to 220 parts of activated humic acid and 340 to 430 parts of calcium peroxide. The fertilizer has comprehensive nutrients, can effectively improve the utilization rate of the fertilizer, improve the soil structure and promote production and income increase, takes organic matters as a carrier, is added with a large amount of activated humic acid and silico-calcium-magnesium ore powder, has strong chelating ability, promotes the formation of soil aggregates and improves the absorption and utilization rate of plant nutrients, and has good application prospects through a unique coating technology. The active ingredients and the granulation rate of the product are effectively improved.

The invention discloses a composition for promoting skeletal growth and physical development of children and a preparation method, the composition comprises a plurality of nutrient elements and Chinese herbal medicine components, and the components have the effects of promoting skeletal health, enhancing immunity, improving nutrient absorption, regulating metabolism, improving sleep quality, promoting secretion of growth hormone and the like. The healthy growth of bones and the overall development of a body are jointly promoted.

The invention relates to the technical field of health management, and relates to a feeding chewing monitoring method and system, and the method comprises the steps: obtaining an image of to-be-eaten food; based on the food image, physical attributes of food are determined through an analysis model, preset user personalized information is combined, a recommended chewing target containing recommended chewing times and recommended chewing quality threshold values is generated, and the recommended chewing quality threshold values comprise a myoelectric force threshold value and a breaking degree threshold value; the chewing action of the user is monitored in real time through an acquisition unit worn on the head and face of the user to obtain actual chewing data, and the actual chewing data comprises actual chewing times and actual chewing quality parameters; and comparing the actual chewing data with the recommended chewing target, and outputting instructive feedback information to the user based on a comparison result, the chewing process of the user is monitored through an intelligent means, and personalized chewing guidance is provided, so that the eating efficiency, nutrition absorption and oral health of the user are improved.

The invention discloses an AIoT water and fertilizer integrated regulation and control method and system based on a crop growth dynamic model, and relates to the technical field of water and fertilizer regulation and control, and the method comprises the steps: firstly obtaining multi-dimensional environment parameters and soil characteristics through an AIoT sensing network, and deeply analyzing a restriction mechanism of soil moisture on nutrient effectiveness based on the crop growth dynamic model; and quantifying the nutrient effectiveness coefficient. And then, inputting the coefficient into a water-fertilizer coupling prediction model, and dynamically deducing the actual nutrient absorption amount and the moisture evapotranspiration amount of the crop in a specific water-fertilizer interaction environment, so as to realize digital representation of the physiological demand. And further, in combination with future meteorological information and cost constraints, multi-target collaborative optimization is carried out by using a rolling time domain optimization algorithm, and an optimal regulation and control strategy considering growth requirements and economic benefits is generated and driven to be executed. In this way, quantitative and accurate regulation and control of the water and fertilizer synergistic effect can be achieved, and therefore the resource utilization efficiency and agricultural production economic benefits in the whole growth cycle of crops are greatly improved.

The invention belongs to the technical field of fertilization, and particularly relates to a method for promoting corn growth through root-leaf complementary nitrogen application under the salt stress condition and application. The invention provides a method for promoting corn growth by root-leaf complementary nitrogen application under a salt stress condition, corn is planted in saline soil, soil nitrogen application and leaf surface nitrogen application are performed, the soil nitrogen application amount is a soil nitrogen application amount threshold value, and the leaf surface nitrogen application amount is a leaf surface nitrogen application amount threshold value. As nutrient absorption of corn roots is blocked under the salt stress condition, nitrogen fertilizer is applied through soil and leaf surface complementation, and the nitrogen fertilizer is applied through leaf surfaces to supplement insufficient nitrogen fertilizer absorption of the corn roots, so that nitrogen absorption of the corn can be improved, stress resistance of the corn is improved, and growth of the corn is promoted.

The invention provides a hydroponic symbiotic microbial system and a hydroponic symbiotic method, and relates to the technical field of microbiology. The hydroponic symbiotic microbial system comprises an arbuscular mycorrhizal fungus community, broom cladosporium, aspergillus, pseudomonas and blastomonas. According to the method, a microbial structure in a natural environment is simulated by constructing diversified microbial communities, so that the synergistic effect of the microbial communities is fully exerted; through interaction of modes of co-decomposing organic matters, promoting nutrient absorption, promoting biological control, enhancing plant stress resistance and the like, the stability of an ecological system is co-maintained, and the growth of plants is promoted.

The invention discloses a plant source leaf surface resistance and control agent for efficiently reducing the cadmium content of wheat and a preparation method thereof. According to the invention, S-allyl-L-cysteine is used as an important component of the foliar blocking and controlling agent, so that the bioavailability of cadmium ions is effectively reduced, and the absorption and transport of cadmium in plants are reduced, thereby reducing the cadmium content in wheat grains. Meanwhile, S-allyl-L-cysteine has relatively strong antioxidant capacity, so that free radicals in the plant body can be removed, and cells are protected from oxidative damage. As a plant growth regulator, S-allyl-L-cysteine can improve nutrient absorption and utilization of plants and promote photosynthesis and energy metabolism of the plants, so that the yield and quality of wheat are improved. The S-allyl-L-cysteine can activate a defense mechanism in a plant body, enhance the resistance of the plant to environmental stress, including the resistance to heavy metal pollution, and improve the overall health and yield of wheat.

The invention relates to a random forest and model predictive control (RF-MPC) cooperation-based wheat water and fertilizer amount intelligent decision-making method and system, environmental data are collected in real time by deploying a sensor network module, and a multi-dimensional decision-making system comprising a crop growth stage model, a soil layered moisture dynamic model and a nutrient absorption efficiency prediction model is constructed. Wherein the random forest algorithm is used for predicting key environment parameters in the next eight days, and inputting a prediction result into the MPC controller; and the MPC controller dynamically solves an irrigation volume distribution scheme and an optimal ratio of nitrogen to phosphorus to potassium in the whole growth cycle through a rolling time domain optimization method based on 9 growth stages of wheat and terrain and illumination differences of an irrigation area. According to the system, by establishing a dynamic moisture balance equation of soil at different depths, accurate quantitative coupling of root system water absorption, irrigation supply and deep seepage is achieved; and the fertilization module dynamically optimizes the nitrogen-phosphorus-potassium ratio based on an irrigation event triggering mechanism, so that accurate matching of nutrient supply and demand is realized.

The invention discloses a polypeptide fertilizer beneficial to cold resistance of crops and a preparation method thereof, and belongs to the technical field of agricultural fertilizers, the fertilizer is prepared by taking livestock and poultry blood (preferably pig blood) as a raw material, preparing high iron protein peptide through a compound protease hydrolysis process, and matching with a trace element compound, humic acid and a carrier. The preparation process comprises the steps of enzymolysis preparation of the ferritin peptide, fertilizer mixing, granulation, drying and the like. The polypeptide fertilizer disclosed by the invention takes the high-iron protein peptide as a core, the contained small-molecular amino acid polypeptide can enhance the antioxidant enzyme activity of crops at low temperature and reduce malonaldehyde accumulation, the porphyrin iron can promote chlorophyll synthesis and energy metabolism, and the high-iron protein peptide and the porphyrin iron cooperate to remarkably improve the cold resistance of the crops. Meanwhile, by cooperating with trace elements and humic acid, the cold resistance is enhanced, nutrient absorption of crops is promoted, the yield and quality are improved, multiple effects of resisting cold, improving quality, increasing yield and the like are achieved, the raw materials are wide in source, the cost is low, the preparation process is simple, and large-scale production and application are facilitated.