31 results about "Crop biomass" patented technology

The invention provides a saline-alkali soil conditioner as well as a preparation method and application thereof, and belongs to the technical field of soil improvement. The saline-alkali soil conditioner is prepared from the following raw material components in parts by mass: 80 to 90 parts of edible fungus residues, 10 to 20 parts of humic acid and 0.1 to 0.3 part of a microbial agent. The saline-alkali soil conditioner provided by the invention can obviously reduce the pH and total salt content of the surface layer of soil, obviously improve the content of nitrogen nutrients in the soil, optimize the distribution structure of the nitrogen nutrients and reduce the risk of nitrogen leaching loss. Meanwhile, the water and fertilizer retention capacity of soil can be improved, soil nutrients can be supplemented, the soil fertility can be improved, the harm of soil salinity to crops can be reduced, and the stress resistance and the yield of the crops can be improved. The soil conditioner for the saline-alkali land can solve the problems that at present, soil of salinized farmland in Hetao irrigation districts is prone to hardening, the soil fertility is low, the soil water and fertilizer utilization rate is low, and the crop biomass is low.

The invention relates to the field of microbial technology and ecological restoration of saline-alkali soil, in particular to plant growth-promoting paenibacillus for saline-alkali soil and application of the plant growth-promoting paenibacillus. The microbial inoculum comprises paenibacillus sp. XJ-1, P.megatherium Y-39, Endophytic glutamicum G-30 and Enterobacter C-29, and is prepared by mixing the paenibacillus sp. XJ-1, the P.megatherium Y-39, the Endophytic glutamicum G-30 and the Enterobacter C-29 according to a ratio of 1: 1: 1: 1: 1 and carrying out co-culture domestication, function synergistic induction and adaptability synchronous reinforcement. The viable count of the microbial agent is larger than or equal to 1 * 10 cfu / mL, the microbial agent can tolerate 15% NaCl, the pH value of the microbial agent is 9.5, the pH value of soil can be remarkably reduced through root irrigation or seed dressing application, the soil enzyme activity and the crop biomass can be improved, and the microbial agent is suitable for saline-alkali soil crops such as oilseed rape and wheat, has the advantages of being high in stress tolerance, synergistic in function, safe in ecology and the like and has wide application prospects.

The invention provides preparation of an S / N co-doped modified biochar composite material and application of the S / N co-doped modified biochar composite material in activated persulfate resource degradation and removal of antibiotics, belongs to the technical field of wastewater treatment, and aims to efficiently degrade and remove antibiotics in wastewater and avoid environmental risks of a metal catalyst at the same time. The method is a green, environment-friendly, economical and efficient water treatment method; the preparation method comprises the following specific steps: S1, mixing and grinding waste crop biomass and metal salt to prepare modified biochar; s2, mixing and grinding the modified charcoal and a sulfur-containing compound; s3, performing high-temperature pyrolysis on the ground mixture to obtain an S / N co-doped modified charcoal composite material, and using the S / N co-doped modified charcoal composite material as a persulfate catalyst to effectively degrade and remove tetracycline in polluted wastewater; the S / N co-doped modified biochar composite material prepared by the invention effectively solves the problem of secondary utilization of waste crops, mainly improves the degradation and removal efficiency of tetracycline and realizes resource conversion of tetracycline.

The invention relates to the field of microorganism screening, in particular to a microorganism screening method capable of improving saline-alkali soil crop stress resistance and application thereof.The microorganism screening method comprises the following steps that S1, in saline-alkali soil with Na < + > larger than 0.6% and pH 8.5-10.0, suaeda glauca rhizosphere soil and root system tissue are collected and inoculated to 0.6 moL / L NaCl, and the saline-alkali soil is inoculated to a culture medium; in a liquid culture medium with the pH value of 8.0, through a gradient saline-alkaline stress enrichment-bifunctional bacterium collaborative screening technology and in combination with an embedding matrix and modified biochar compounded microbial screening agent, compared with the prior art, salt ion adsorption, flora survival rate improvement, root system nitrogen fixation and phosphate solubilizing bacterium standard-reaching rate improvement and crop biomass increase are synchronously realized, and the yield of the crops is increased. And moreover, the toxicity of salt ions is remarkably reduced, the soil micro-ecology is systematically optimized, and the method has a wide application prospect in marginal land agricultural development and saline-alkali soil ecological restoration.

The present invention provides a method for preparing normal temperature and low pressure biomass particles, which include the following raw materials in parts by mass: 20-30 parts of cow dung, 10-15 parts of black pine leaves, 5-8 parts of poplar sawdust, 15-20 parts of coal slag, 8-12 parts of vegetable oil, 3-6 parts of bonding aid, and 1-3 parts of combustion improver. The method for preparing normal temperature and low pressure biomass particles includes the following steps: uniformly stirring cow dung, black pine leaves, coal slag, poplar sawdust, vegetable oil, bonding aid, and combustion improver, crushing, and sieving to obtain a mixture; then inoculating a fermentation agent into the mixture, fermenting in a stacking fermentation manner, and obtaining a fermented product; extruding the fermented product into cylindrical particles and drying. The present invention successfully solves the problem of low calorific value of crop biomass fuel, which not only greatly improves the economic benefits of crop waste, but also increases the energy density of biomass fuel.

The present application relates to a kind of water culture crop biomass prediction methods based on stage-specific feedback evapotranspiration calculation, comprising the following steps: according to growth day or accumulated temperature, water culture crop growth is divided into three stages;For current growth stage, calculate stress factor and regulate the weight corresponding to each stage stress factor;Multiply basic crop coefficient, canopy coverage, reference evapotranspiration and stress factor and corresponding weight, calculate stage-specific evapotranspiration;Multiply water productivity adjustment value, the ratio of stage-specific evapotranspiration and reference evapotranspiration and environmental stress factor and corresponding weight, predict biomass increment, obtain water culture crop biomass prediction value;Using ensemble Kalman filter, integrated assimilation canopy coverage and biomass prediction value, carry out sustained biomass prediction in the whole growth cycle of water culture crop.Compared with prior art, the present application has the advantages of biomass prediction accuracy.

The invention discloses a method for reducing emission of nitrous oxide (N2O) in farmland soil based on synergistic fertilization of bacillus amyloliquefaciens EBL11, and belongs to the technical field of agricultural environment treatment. Aiming at the problems of high cost, high environmental risk, poor stability and the like in the existing N2O emission reduction technology, the bacillus amyloliquefaciens EBL11 is cooperatively applied with a fertilizer in a solid microbial inoculum form, so that the N2O emission of the farmland is remarkably reduced. The method is characterized by comprising the following steps: (1) synergistically applying a compound fertilizer and a fungicide; (2) synergistically applying an organic fertilizer and a fungicide; and (3) mixing the microbial inoculum and the fertilizer, uniformly spreading the mixture to the soil, and combining intermittent irrigation and repeated quadrat monitoring management. Experiments show that the method can reduce the N2O emission rate of the paddy field by 131.2%-215.4% within one week, soil is converted into an absorption state from emission, and meanwhile, the biomass of crops such as oilseed rape is increased. The method has the characteristics of high efficiency, emission reduction, low cost and environmental friendliness, and is suitable for large-scale popularization in farmlands such as paddy fields and rape fields.

The invention relates to a natural biomass binder prepared based on cotton straw and a preparation method and application of the natural biomass binder compounded with the cotton straw to form solid briquette fuel, the natural biomass binder is prepared by taking the cotton straw as a raw material, and the preparation method comprises the following steps: crushing the cotton straw, carrying out alkalization treatment, carrying out hydrothermal reaction, and drying to obtain cotton straw binder particles. Cotton straw from Xinjiang is used for preparing the binder, and the problems that biomass resources are rich, but crop straw is low in utilization rate and low in high-value recycling rate are solved. The binder is low in preparation cost, high in performance and small in environmental load, the binding advantage of cotton straw biomass is fully utilized by the binder, and the biomass binder with excellent performance can be prepared. The biomass binder solves the problem of resource shortage to a certain extent, and waste crop biomass such as cotton straw is turned into wealth.

The invention discloses a phosphoric acid modified wheat straw biochar-based slow-release cluster bacterial fertilizer and a preparation method and application thereof.The method comprises the steps that wheat straw serves as a raw material, and phosphoric acid modified biochar (PWBC) with rich oxygen-containing functional groups and a multi-stage pore structure is prepared through phosphoric acid activation and programmed pyrolysis; then taking a granular nitrogen fertilizer as a core, constructing a PWBC coating layer by utilizing a fluidized bed spraying process, inoculating arbuscular mycorrhizal fungi (AMF) spores through low-pressure spraying, and finally, forming PWBC-AMF through secondary encapsulation of sodium alginate. According to the invention, a physical shelter is provided for AMF by using a pore structure of PWBC, and organic fusion of long-acting accurate release of nutrients (the slow release period is greater than or equal to 60 days) and high-power keep-alive of strains is realized. When the method is applied to a pakchoi-radish intercropping planting mode, rhizosphere micro-ecology can be remarkably optimized, interspecific nutrient competition can be relieved, crop biomass can be improved, farmland nitrous oxide emission can be cooperatively reduced, and a scientific scheme is provided for reduction and synergism of chemical fertilizer.

The application discloses a large-scale farmland biomass monitoring method based on unmanned aerial vehicle and satellite image and belongs to the technical field of agricultural supervision.The application aims to solve the problem that the precision of an existing biomass estimation model based on satellite remote sensing data is limited by the mismatch between satellite data and ground measurement in spatial scale, and provides a biomass estimation precision modeling method based on satellite remote sensing data by taking unmanned aerial vehicle data as an intermediate bridge and combining with a proposed SS-GMI sampling method.The method is a general method and is suitable for modeling of crop biomass estimation based on satellite data; moreover, by combining with the proposed SS-GMI sampling method suitable for farmland geographic space, more representative and independent sample point sets can be obtained while unmanned aerial vehicle and satellite image data are fully utilized, a more reliable basis is provided for analysis and modeling of geographic space data, and the precision and reliability of crop biomass estimation are further improved.

The application discloses a method and integrated system for reducing carbon dioxide emission by using tenebrio molitor matrix fermentation, and the steps of the method comprise the following steps: putting tenebrio molitor in crop biomass for pretreatment to obtain a pile; stacking the pile and then carrying out fermentation; applying the generated carbon dioxide as gas fertilizer during the fermentation process; and using the fermented pile as a cultivation substrate. The method introduces tenebrio molitor into a crop biomass fermentation system, which can not only effectively degrade straw and realize agricultural waste resource utilization, but also significantly reduce the CO2 emission during the fermentation process. The integrated system based on the method couples crop biomass fermentation with greenhouse planting, recycles the generated CO2 as a carbon source for photosynthesis, and can regulate the CO2 supply according to the crop growth demand, thereby further realizing secondary CO2 emission reduction, effectively promoting crop growth, and constructing a low-carbon, high-efficiency and closed-loop ecological agricultural mode, which has significant environmental benefits, resource utilization benefits and production benefits.

In order to solve the problems of environmental pollution, resource waste and the like caused by treatment such as low utilization rate of crop straws in China, open-air incineration and the like, the invention aims to provide a method for preparing the natural biomass binder by taking the corn straws as a raw material, and the preparation method comprises the following steps: crushing the corn straws, carrying out alkalization treatment, and carrying out hydrothermal reaction, thereby obtaining the natural biomass binder. And drying to obtain corn straw binder particles. Corn straw from Xinjiang is used for preparing the binder, and the problems that biomass resources are rich, but crop straw is low in utilization rate and low in high-value recycling rate are solved. The binder is low in preparation cost, high in performance and small in environmental load, the binding advantage of corn straw biomass is fully utilized by the binder, and the biomass binder with excellent performance can be prepared. The biomass binder solves the problem of resource shortage to a certain extent, and waste crop biomass such as corn straw is turned into wealth.

The application discloses a biodegradable coated urea added with zirconium-based MOF nanocrystals with phosphatase activity and a preparation method and application thereof, and belongs to the technical field of fertilizers. The zirconium-based MOF nanocrystals with phosphatase activity are prepared, a solution of the zirconium-based MOF nanocrystals is mixed with urea and dried, polypropylene carbonate is used as a coating material, and then the biodegradable coated urea added with the zirconium-based MOF nanocrystals with phosphatase activity is prepared through a fluidized bed solvent method. The coated urea prepared in the application can realize nitrogen control release, hydrolyze soil organic phosphorus through the phosphatase activity of the Zr-MOF nanocrystals, realize the dual functions of continuous supply of nitrogen and in-situ activation of soil phosphorus, simultaneously meet the demand of crops for two core nutrient elements of nitrogen and phosphorus, significantly relieve the low-phosphorus stress of crops, promote the growth of the root system and the aboveground part of crops, and improve the biomass of crops.

The invention belongs to the technical field of agricultural biology, and particularly relates to a crop disease-resistant growth-promoting composition based on synergistic interaction of plant immune protein and thidiazuron, which comprises the following components: the plant immune protein which is selected from chitinase, beta1, 3 glucanase or PR protein and has the concentration of 0.1-10 mg / L; the concentration of the thidiazuron is 0.01 to 1 mg / L; according to the present invention, the optimal ratio of the immune protein and the thidiazuron is adopted, such that the limitation of the single component is avoided, and the synergistic effect of the immune protein and the thidiazuron can significantly improve the biomass and the disease resistance of the crops; the composition provided by the invention has the advantages of low cost, environmental protection, environmental friendliness, greenness and safety, and is especially suitable for the stable yield demand of high value-added crops under the stress condition, the effect of the composition is obviously better than that of a single component, and the environmental residue risk, the dependence on chemical pesticides and the use of the chemical pesticides can be reduced by utilizing the bioactive components.

The invention belongs to the field of microorganisms, and particularly provides a Penicillium brevicompactum Q-9 strain (Penicillium brevicompactum Q-9), which is derived from garlic rhizosphere soil, is identified as non-pathogenic Penicillium brevicompactum, is preserved in China General Microbiological Culture Collection Center (CGMCC) on April 11, 2024, and has a preservation number of CGMCC No.41153. The Penicillium brevicompactum Q-9 strain is applied to the field of microorganisms. The Q-9 strain grows rapidly, can secrete phosphate-solubilizing enzyme, has broad-spectrum antagonistic activity, and has a remarkable inhibition effect on various plant pathogenic fungi (such as fusarium oxysporum and cylindrosporium), and the highest bacteriostasis rate reaches 77.32%. The strain can significantly promote plant growth and improve crop biomass. The invention also provides application of the strain in the aspects of plant disease control and plant growth promotion.

This invention discloses the rice nitrogen-efficient utilization gene OsNAC15, its encoded protein, and its applications, belonging to the field of molecular breeding technology. This invention is the first to disclose the role of the OsNAC15 gene in the efficient nitrogen utilization of rice. Overexpression of the rice OsNAC15 gene significantly improves the nitrogen use efficiency and yield of the plant, while mutation of the OsNAC15 gene significantly reduces the nitrogen use efficiency and yield. Mutations and / or overexpressions of the OsNAC15 gene do not result in normal plant development. By precisely regulating the expression level of this gene, the nitrogen nutrient utilization rate of rice can be controlled, thereby increasing crop biomass and yield, and reducing environmental pollution. This has broad application prospects in the agricultural field, especially in the breeding of crop varieties that can efficiently absorb and utilize nitrogen fertilizer, such as rice, corn, wheat, soybeans, cotton, and rapeseed. Its widespread application is expected to lead to more environmentally friendly and efficient agricultural production, providing strong scientific and technological support for solving global food security and environmental protection challenges.

The invention discloses a red soil structure modifier composition and application thereof, and belongs to the technical field of soil improvement. The red soil structure modifier composition comprises the following raw materials in parts by weight: 50-70 parts of a natural humus material, 5-15 parts of a biological activator, 40-60 parts of an organic fertilizer, 10-20 parts of a calcium source material and 0.05-1 part of a chemical fertilizer, the calcium source material comprises calcium salt and / or lime. A natural humus material is used as an organic carbon carrier and is matched with a calcium source material, and aggregate formation is promoted through a Ca < 2 + > bridging effect; through precise proportion design, the optimal compounding proportion of the natural humus material and different calcium sources is defined, the soil pH is remarkably increased, the red soil acidification problem is effectively relieved, the phosphorus effectiveness is improved, the soil organic carbon library is enhanced, the microbial activity is promoted, the crop biomass is remarkably increased, and the crop yield is increased. And theoretical basis and technical support are provided for red soil obstacle reduction and soil fertility improvement.

In order to solve the problems of environmental pollution, resource waste and the like caused by treatment such as low utilization rate of crop straws in China, open-air incineration and the like, the invention aims to provide a method for preparing a natural biomass binder by taking sorghum straws as a raw material, and the preparation method comprises the following steps: crushing the sorghum straws, carrying out alkalization treatment, and carrying out hydrothermal reaction, thereby obtaining the natural biomass binder. And drying to obtain sorghum straw binder particles. Sorghum straw from Xinjiang is used for preparing the binder, and the problems that biomass resources are rich, but crop straw is low in utilization rate and low in high-value recycling rate are solved. The binder is low in preparation cost, high in performance and small in environmental load, the binding advantage of sorghum straw biomass is fully utilized by the binder, and the biomass binder with excellent performance can be prepared. The biomass binder solves the problem of resource shortage to a certain extent, and waste crop biomass such as sorghum straw is turned into wealth.

The invention relates to the technical field of crop above-ground biomass estimation, and discloses an unmanned aerial vehicle and meteorological parameter-based arid region crop biomass estimation method and system, and the method comprises the following steps: S1, carrying out the data collection of a multi-source remote sensing image of a field crop through an unmanned aerial vehicle multi-source remote sensing system, and carrying out the preprocessing; s2, extracting multi-dimensional feature information of the multi-source remote sensing image; s3, calculating a reference evapotranspiration based on the multi-source meteorological environment data of the planting area; combining Pearson correlation analysis and a random forest algorithm to screen out features with high correlation with the aboveground biomass in the multi-dimensional feature information and the reference evapotranspiration, and obtaining key feature parameters; s4, constructing an aboveground biomass estimation model by using the key feature parameters and based on a one-dimensional convolutional neural network, and estimating the aboveground biomass of the field crops in the arid region; according to the method, the multi-source remote sensing data of the unmanned aerial vehicle, the meteorological parameters and the deep learning technology are fused, so that high-precision estimation of the aboveground biomass of field crops in the arid region is realized.

The invention relates to the technical field of geological mining, in particular to a vegetation disturbance dynamic detection system and method based on a remote sensing long time sequence, and the method comprises the following steps: taking mining area surface subsidence data, mining area drought indexes and mining area meteorological data outputted by a surface subsidence mathematical model as vegetation disturbance characteristics; establishing a statistical relationship model of the surface subsidence to the vegetation biomass by utilizing a machine learning model; based on a statistical relation model of surface subsidence to vegetation biomass, a disturbance threshold value of surface subsidence to vegetation growth is quantified, and a space-time window causing maximum ecological disturbance is identified. Through long-time-sequence continuous monitoring of satellite remote sensing, the spatial-temporal variation rule among surface deformation, soil moisture and vegetation biomass is disclosed, a vegetation biomass dynamic prediction model is constructed, and real-time monitoring and prediction of crop biomass in the underground mining process are achieved; and a series of environmental effects generated by dynamic disturbance of underground mining are analyzed.

The present invention discloses a regulation simulation method and a simulation device for the influence of regional open ditch drainage on farmland, including: collecting basic hydrological meteorological and field data of the research area; establishing a water flow model and a crop growth model of the research area; discretizing the water flow model in time and space, constructing a surface water and groundwater data interaction module and defining the module boundary, and calculating the daily cumulative process and yield of above-ground crop biomass in combination with the crop growth model; calibrating and verifying the water flow model and the crop growth model established in step 2; establishing a simulated open ditch drainage model based on the open ditch data and the data of the buildings on the open ditch; simulating the regional water dynamics under the condition of open ditch drainage, and outputting the drainage volumes of each level of open ditches and the drought and waterlogging intensities of each field block; determining the design objective, and adjusting the open ditch parameters, the positions of sluices and weirs, and the regulation scheme to achieve the design objective. The present invention provides a more accurate and efficient way for studying the water dynamics and crop growth simulation under the condition of large-area open ditch layout.

The invention provides an artificial reclamation plant carbon sequestration quantification method and system, and relates to the technical field of carbon sequestration amount calculation.The method comprises the steps that a reclamation area is divided into a plurality of areas, the divided areas are divided into a center area and other areas, and the instantaneous photosynthetic efficiency of the center area on the same day is obtained to calculate the carbon sequestration amount of the center area on the same day; acquiring remote sensing data of each region on the same day, and determining the reclaimed crop biomass increment of each region on the same day based on the remote sensing data; acquiring soil data of each region and the reclaimed crop biomass increment of each region in the previous day, and setting a biomass increment judgment rule and a biomass increment adjustment rule based on the increment; adjusting the biomass increment of each region based on the rule to obtain a corresponding final biomass increment; and estimating the carbon sequestration amount of other areas by combining the final biomass increment of the reclamation crops of the central area and other areas on the same day and the carbon sequestration amount of the central area on the same day.

The present invention discloses a method for predicting field crop biomass in cloud-obscured areas using satellite imagery during rainy seasons. The method comprises: obtaining data on key growth periods for field crops within a study area; extracting farmland from satellite imagery and inverting crop biomass data; removing potentially affected farmland, obtaining satellite imagery and crop biomass data for the actual predicted area obscured by clouds and a reference area not obscured by clouds; and comparing these images to obtain a crop biomass distribution map for the predicted date, thereby enabling crop biomass prediction for cloud-obscured areas. By utilizing integrated air-space-ground monitoring technology, the present invention achieves precise inversion of satellite-scale crop biomass data through the multi-dimensional collaboration of satellites, drones, and ground-based sensor networks. This method addresses the lack of satellite-scale data on key crop growth periods due to cloud obscuration, enabling continuous satellite-scale monitoring of crop growth.

The present application belongs to the technical field of bioengineering. The present application discloses a bacillus pumilus 21-14, the strain has been preserved in the China General Microbiological Culture Collection Center (CGMCC) on September 6, 2024, the center is abbreviated as CGMCC, the strain preservation center registration number is CGMCC NO.31892, the strain preservation date is September 6, 2024, and the address of the preservation unit is No.3, Beichen West Road, Chaoyang District, Beijing. The bacillus pumilus strain 21-14 provided by the present application is simple to culture, short in cycle, free of ecological toxicity, rich in types of available carbon sources, strong in salt and alkali tolerance, capable of promoting the growth and development of potatoes through phosphorus solubilization and IAA production, beneficial to promoting the improvement of the biomass of crops in saline-alkali soil, and capable of effectively inhibiting the growth of streptomyces prolixus.

The application discloses a farmland crop type fine identification method based on time sequence remote sensing images and relates to the technical field of farmland crop type identification. Time sequence remote sensing images and geological environment monitoring data of a whole growth cycle of a region to be identified are acquired, and a multi-modal heterogeneous input tensor is constructed. Through a double-flow channel of an orthogonal decoupling convolution coding network, crop biomass feature components and geological background feature components are separated and extracted. The components are taken as joint input to a differentiable logic reasoning identification model. A global utility function with the maximum classification confidence, feature orthogonality and physical constraint satisfaction degree as the target is defined, a gradient ascent method is used to iteratively optimize the logic node parameters of the model, and the optimal decision path distribution is output until convergence. In combination with the safety margin of the physical constraint boundary, a crop-environment adaptation analysis index is calculated, and high-precision and interpretable crop type identification is realized. The application improves the identification accuracy and decision transparency through feature decoupling and physical logic fusion.

The invention provides an acid soil conditioner and application thereof and an acid soil improvement method, and relates to the technical field of soil improvement, the acid soil conditioner comprises wormcast and a microbial agent; the microbial agent comprises penicillium kirschmannii with the viable bacterium concentration of 106 to 108 CFU / mL; the ratio of the mass of the wormcast to the volume of the microbial agent is (2-6g): (1-3mL). According to the acid soil conditioner provided by the invention, the wormcast and the penicillium kirschinii are applied in a compound manner, and a synergistic driving mechanism is constructed through organic nutrition input of the wormcast and functional microorganism guidance of the penicillium kirschinii, so that the pH, organic matter and nutrient content of soil can be improved, and a micro-ecological structure can be improved; the diversity and biological activity of soil microorganisms can be remarkably improved, the microbial network structure is optimized, the stability and toughness of a soil ecological system are enhanced, and the ecological function of acidified soil is restored, so that comprehensive improvement of crop biomass and nutrient utilization efficiency is promoted.

The application provides a high-calcium foliar fertilizer capable of enhancing salt and alkali tolerance of crops, and a preparation method and application thereof, and belongs to the technical field of crop planting. The high-calcium foliar fertilizer takes citric acid fermentation tail liquid, inorganic chemical fertilizer and anhydrous calcium chloride as raw materials, and comprises the following effective components: organic matter of 0.4 g / L or more, N of 0.2 g / L or more, P2O5 of 0.12 g / L or more, K2O of 0.08 g / L or more, and 0.25% to 2.0% of anhydrous calcium chloride. The raw material components in the high-calcium foliar fertilizer are mutually matched and synergistically enhanced, and jointly play a role in significantly enhancing the salt and alkali tolerance of crops, and have remarkable application effects in improving the biomass of crops, promoting the growth of crops, improving the photosynthetic capacity, resisting active oxygen damage, and expelling salt base ions. In addition, the application is also of great significance in solving environmental pollution, recycling waste liquid, reducing the production cost of fertilizers, and developing green and healthy agriculture.

The invention discloses a tilled land crop type fine identification method based on a time sequence remote sensing image, and relates to the technical field of tilled land crop type identification. Obtaining a time sequence remote sensing image and geological environment monitoring data of the whole growth cycle of the to-be-identified region, and constructing a multi-modal heterogeneous input tensor; separating and extracting a crop biomass characteristic component and a geological background characteristic component through a double-flow channel of an orthogonal decoupling convolutional coding network; inputting the data as a combination into a micrologic reasoning recognition model; defining a global utility function aiming at maximizing classification confidence, feature orthogonality and physical constraint satisfaction degree, and iteratively optimizing model logic node parameters by adopting a gradient ascending method until convergence and outputting optimal decision path distribution; and the safety margin of the physical constraint boundary is combined, a crop-environment adaptation analysis index is calculated, and high-precision and interpretable crop type identification is realized. According to the invention, through feature decoupling and physical logic fusion, the recognition accuracy and decision transparency are improved.

The invention discloses a method for judging crop water stress in sulfate-chloride type salinized soil based on soil water potential, and relates to the technical field of agricultural soil monitoring, the method comprises the following steps: collecting a mixture of surface soil and salt in a severe salinized soil area, extracting the salt to obtain mixed salt crystal powder, adding the mixed salt crystal powder into sandy loam soil according to a weight gradient, the method comprises the following steps: adding deionized water, uniformly mixing, drying, grinding and sieving soil samples, preparing salinized soil samples with different salt contents, sowing corn, soybean, sunflower, cyperus esculentus and rape seeds in the salinized soil samples, culturing, measuring crop cumulative germination rate, biomass and soil water potential indexes, establishing a piecewise function model of the soil water potential and the crop biomass, and calculating the soil water potential and the crop biomass according to the piecewise function model. The function form is a combination of a constant segment and an index segment; and extracting a function inflection point as a water potential threshold value of water stress, and judging whether the crop is in a water stress state or not. According to the invention, rapid and quantitative diagnosis of the saline soil crop stress state is realized.

The invention relates to a hydroponic crop biomass prediction method based on stage specificity feedback evapotranspiration calculation. The hydroponic crop biomass prediction method comprises the following steps that hydroponic crop growth is divided into three stages according to the number of growth days or accumulated temperature; stress factors are calculated for the current growth stage, and weights corresponding to the stress factors in all the stages are regulated and controlled; multiplying the basic crop coefficient, the canopy coverage rate, the reference evapotranspiration, the stress factor and the corresponding weight, and calculating stage-specific evapotranspiration; multiplying the moisture productivity adjustment value, the ratio of the stage specific evapotranspiration to the reference evapotranspiration, the environmental stress factor and the corresponding weight, and predicting the biomass increment to obtain a hydroponic crop biomass prediction value; and performing continuous biomass prediction in the whole growth cycle of the hydroponic crops by adopting ensemble Kalman filtering and assimilating the canopy coverage rate and the biomass prediction value in a combined manner. Compared with the prior art, the method has the advantages of accurate biomass prediction and the like.