364 results about "Soil pH" patented technology

The invention relates to the technical field of cross-modal data fusion analysis of soil component detection and improvement agent preparation, in particular to a preparation method of a soil improvement agent based on component detection, which comprises the following steps: acquiring soil component data through a near infrared spectrometer, a high performance liquid chromatograph and an inductively coupled plasma mass spectrometer; an incremental principal component analysis algorithm is combined with an oscillation suppression function to update a covariance matrix in real time, a dynamic defect factor priority list is generated, a multi-objective optimization model improved based on NSGA-II is guided to integrate the soil pH value, humidity and organic matter content to construct a dose response curved surface, and a Pareto optimal solution set is solved. A sensor array collects environment feedback data, drives a transfer learning algorithm to calibrate parameters, a dynamic incidence matrix attenuation rate and optimal weight adaptive adjustment, iteratively outputs a modifier synergistic effect solution set through a closed-loop control mechanism, and solves the problems of difficult data fusion, principal component weight offset and component synergistic deviation. And the proportioning accuracy and stability are improved.

The invention relates to the technical field of agriculture, and discloses an intelligent fertilization technical measure and method for improving the fertilizer utilization rate, and the intelligent fertilization technical measure comprises a soil sensor module which is used for monitoring various parameters of soil in real time, including but not limited to soil nutrient content, soil humidity, soil acidity and alkalinity, soil temperature and soil texture; the soil sensor module can collect monitored parameter data with high precision and high frequency, and transmit the data to the central control unit through the wireless communication module; the fertilizer storage and conveying module is internally provided with a plurality of independent fertilizer storage bins, and each storage bin can store different types of fertilizers. According to the present invention, the type, the use amount and the application time of the fertilizer can be precisely controlled according to the growth requirements of different crops and the soil state through the precise fertilization mode so as to ensure the efficient absorption of the fertilizer by the crops, such that the fertilizer utilization rate is significantly improved, and compared with the traditional fertilization mode, the fertilizer waste can be reduced, and the agricultural production cost can be reduced.

The invention relates to the technical field of greenhouse environment control, in particular to a greenhouse environment control method and system. The method comprises the following steps: obtaining data of a crop cultivation stage and data of a soil monitoring sensor to obtain soil state monitoring filling data; then, identifying the abnormal fluctuation state of the soil acidity and alkalinity, and estimating the root growth inhibition degree according to the state to obtain root growth inhibition gradient data; secondly, predicting the soil looseness requirement according to the root inhibition data, and adjusting the soil acidity and alkalinity to realize balance adaptation; and then, based on the soil state data, carrying out adaptive control training, constructing a soil environment regulation and control model, and sending the soil environment regulation and control model to a cloud platform to execute greenhouse environment control. According to the invention, the greenhouse environment control technology is optimized, so that the greenhouse environment control technology is more perfect.

The invention provides a cultivated land quality monitoring system based on cultivated land protection. The cultivated land quality monitoring system comprises a multi-source sensing module, a heterogeneous transmission module, a space-time database module, a quality degradation prediction module, a dynamic early warning module, a repair decision module and a quality traceability block chain module. The multi-source sensing module collects data such as soil pH value, organic matter content, heavy metal concentration, crop canopy temperature and vegetation index; the heterogeneous transmission module carries out encryption packaging and format standardization on the data; the space-time database module stores the processed data and space-time associated information; the quality degradation prediction module generates multi-dimensional monitoring data and predicts a degradation risk; the dynamic early warning module generates a multi-stage early warning signal according to the risk value; the restoration decision module outputs soil improvement engineering technical parameters and ecological compensation schemes; and the quality traceability block chain module realizes data verifiable evidence storage. The intelligent level of cultivated land protection can be improved, and comprehensive technical support is provided for sustainable utilization of cultivated land quality.

The invention discloses alkali-producing cadmium-tolerant acinetobacter capable of increasing the pH value of soil and application of the alkali-producing cadmium-tolerant acinetobacter, and belongs to the technical field of microorganisms, the alkali-producing cadmium-tolerant acinetobacter is preserved in the China General Microbiological Culture Collection Center (CGMCC), the number of the alkali-producing cadmium-tolerant acinetobacter is CGMCC No.33619, and the alkali-producing cadmium-tolerant acinetobacter belongs to proteobacteria and pseudomonas. The strain can increase the environmental pH value from 6.0 to 8.0 through metabolism, and stably grows in an environment with the cadmium (Cd < 2 + >) concentration as high as 20 ppm. The strain can be applied to the fields of acid soil improvement, cadmium pollution remediation, industrial wastewater treatment, fermentation engineering and the like. The method has the advantages of being environmentally friendly, efficient, stable, applicable to multiple scenes and the like, and a novel microbial resource is provided for heavy metal pollution treatment and soil ecological restoration.

The invention provides a soil remediation modifier, a soil remediation method and a soil maintenance method, and belongs to the technical field of soil remediation. The soil conditioner is prepared from the following raw materials in parts by weight: 40-50 parts of modified sludge, 10-15 parts of humic acid, 5-10 parts of a bioactive component, 10-15 parts of an inorganic component and 10-15 parts of an organic component. The soil remediation agent prepared by the invention not only can increase the total porosity of soil, improve soil water stability granules and soil structure, but also can improve soil fertility, improve soil pH value and passivate heavy metal ions, so that the prepared remediated soil can adapt to plant growth requirements, and meanwhile, the sludge and the traditional Chinese medicine residues are subjected to resource utilization, waste is turned into wealth, and the cost is reduced. Wide application prospects are realized.

The invention relates to the technical field of crop straw treatment and soil improvement, in particular to a rice straw returning method for improving soil fertility, which mainly comprises the following steps: crushing rice straws, soaking with a sodium hydroxide solution, and drying; then selecting specific strains, mixing and fermenting to prepare a microbial agent; preparing a composite additive in proportion; within 1-2 days after the rice is harvested, the pretreated straw, the microbial agent and the composite additive are applied to the field, deep ploughing is conducted, and irrigation is conducted; and finally, performing rotary tillage and soil preparation after straw decomposition, and monitoring and adjusting the pH value of the soil when next-stubble crops are planted. According to the method, straw is pretreated, lignin is destroyed through a sodium hydroxide solution, the particle size is accurately controlled, drying is conducted in cooperation, the microbial decomposition efficiency is improved, straw and soil are fully mixed through accurate ploughing in the field, decomposition is accelerated into nutrients, the straw can be powerfully decomposed through a microbial agent, and the soil micro-ecology is improved; the composite additive supplements various nutrients and enhances the water and fertilizer retention capability of soil.

The invention discloses a method and system for evaluating the influence of long-term fertilization on rice field soil heavy metals, and the method comprises the steps: obtaining rice field soil data through a sensor, and obtaining a standardized soil physicochemical property data set and a heavy metal content data set; according to the standardized soil physicochemical property data set and the heavy metal content data set, obtaining a feature vector set reflecting correlation between soil physicochemical properties and heavy metal behaviors; aiming at the feature vector set, obtaining a prediction model for representing the influence of the fertilization mode on the heavy metal mobility; if the heavy metal effective state content output by the prediction model exceeds a preset bioavailability threshold value, classifying the soil physicochemical property data set, judging the influence weight of the soil pH value and the organic matter content on the cadmium mobility, and obtaining the classified soil environment risk grade; and according to the classified soil environment risk levels, obtaining comprehensive rice field soil heavy metal pollution evaluation indexes. The pertinence and effectiveness of pollution control are remarkably improved.

The invention discloses a saline-alkali soil improvement and disease resistance double-effect controlled release fertilizer and a preparation method thereof. The fertilizer comprises 18-22% of biochar, 12-18% of furfural residues, 8-12% of cow dung compost and 6-10% of potassium humate. 5-7% of aluminum sulfate, 4-6% of sulfur and 3-5% of zeolite; the microbial inoculum comprises the following components in percentage by weight: 1.5 to 2.5 percent of saline-alkaline bacillus, 0.8 to 1.2 percent of bacillus subtilis and 0.8 to 1.2 percent 8-12% of a sodium polyacrylate coating, 4-6% of a sulfur coating and 1-3% of polyglutamic acid; 0.8 to 1.2 percent of humic acid chelated iron, 0.8 to 1.2 percent of algal polysaccharide and 0.8 to 1.2 percent of urease inhibitor; 0.8 to 1.2 percent of zinc sulfate, 0.5 to 1.0 percent of manganese sulfate and 0.5 to 1.0 percent of borax. The fertilizer can reduce the pH and conductivity of soil, increase the organic matter content of the soil and effectively improve the physicochemical properties of the soil, meanwhile, by adding the microbial agent, the disease resistance of crops can be effectively improved, the morbidity and disease index of the crops can be reduced, and nutrient release of the fertilizer has a sustained and controlled release characteristic; the initial release rate and the cumulative release rate of nitrogen are both lower than those of common chemical fertilizers, and the cumulative release rate of nitrogen is moderate within 60 days, so that the nutrient requirements of crops in different growth stages can be met.

The utility model relates to the technical field of soil in-situ detection, and discloses a portable soil quality multi-parameter in-situ detection device. The device mainly comprises a controller, a connecting wire, an optical probe and a sensor. The controller is provided with a touch screen, a single-chip microcomputer circuit board, a single-chip microcomputer, an SD card, a key switch, a wireless communication control panel and a power source, and power source management, detection system control, real-time data processing, man-machine interaction, data storage and remote transmission can be achieved. The sensor comprises a soil temperature probe, a soil humidity probe, a soil conductivity probe and a soil pH probe, and can realize real-time data acquisition of soil temperature and humidity, conductivity and pH value; an annular lamp holder, a light source, a photoelectric sensor, a plano-convex lens, a light shielding plate, a light shielding boss and a light shielding ring are arranged in the optical probe, and rapid collection of soil organic matter spectrum information can be achieved. The soil in-situ detection device realizes synchronous acquisition of multiple parameters of soil, is reasonable in structural design and convenient to operate, and is suitable for popularization and application in the field of soil in-situ detection.

The invention discloses an organic fertilizer with a soil improvement function and a preparation method of the organic fertilizer, and the integrated target of heavy metal passivation, saline-alkali regulation and fertilizer efficiency slow release is achieved through kitchen waste, straw and biochar multi-source organic matter compounding, staged functional fungicide adding and intelligent temperature control processes. After the soil conditioner is applied, the soil pH adjusting amplitude reaches 1.0-1.5 units, the heavy metal migration rate is reduced by 65% or above, the crop yield is increased by 15%-25%, and the soil conditioner is suitable for green remediation of degraded soil.

The invention provides a post-fire soil remediation method. The post-fire soil remediation method comprises the following steps: step 1, fire soil diagnosis and pretreatment; 2, gradient pyrolysis biochar is prepared and applied; step 3, inoculating with a compound microbial agent; 4, nutrient regulation and plant combined remediation. According to the invention, through combined application of gradient pyrolysis biochar, cooperative regulation and control of soil acidity and alkalinity, heavy metals and organic pollutants after a fire disaster are realized, and meanwhile, the survival rate and colonization ability of functional microorganisms in a high-temperature environment are remarkably improved by adopting a carrier embedding technology. According to the method, the remediation period can be effectively shortened, the ecological function of the soil is remarkably restored, the remediation cost is greatly reduced by using localized materials, and the problems that in a traditional remediation technology, adaptability is poor, efficiency is low, and cost is high are solved on the whole.

The invention relates to the technical field of cultivation, in particular to a peach orchard cultivation method which comprises the following steps: based on peach tree growth area characteristics, plot slope measurement and soil component collection are performed, and soil pH value and organic matter content comparison is performed through inclination angle reading and soil sampling record numerical values. Through comprehensive analysis of plot slope measurement and soil component collection, plot distribution parameters are generated according to regional characteristics, a more scientific planting zoning management mode is constructed, and the land utilization efficiency is improved. Dynamic detection of soil humidity, temperature and seedling root activity is introduced into planting planning, so that the suitability of a seedling growth environment is ensured, and the growth problem caused by improper plot selection is reduced. The survival rate tracking link is combined with dynamic data monitoring and survival plant number statistics, the hysteresis problem of traditional judgment depending on experience is solved, and real-time optimization of water and fertilizer supply is achieved.

The invention discloses an environment-friendly bio-organic fertilizer for improving acidified soil and a preparation method of the environment-friendly bio-organic fertilizer, and belongs to the technical field of organic fertilizers. The bio-organic fertilizer is prepared from the following raw materials in parts by weight: 10-20 parts of a composite gel material, 80-100 parts of decomposed livestock and poultry manure, 10-20 parts of a microbial agent, 30-50 parts of modified waste tea biochar, 10-15 parts of urea, 5-10 parts of humic acid, 1-5 parts of calcium superphosphate and 1-5 parts of sodium carboxymethyl cellulose, the microbial agent is prepared by mixing bacillus pseudofirmus, pseudomonas oryzae and azotobacter beijerinckii according to the volume ratio of 1: 1: 1. The bio-organic fertilizer can remarkably improve the pH of soil and increase the content of organic matters in the soil, has good buffering capacity and long-term effect, enhances the water and fertilizer retention capacity of the soil, and has a remarkable effect of increasing both production and income of crops.

The invention relates to the technical field of soil change characteristic analysis, in particular to a soil pH spatial-temporal change characteristic analysis method which comprises the following steps: scanning a target area through a vehicle-mounted microwave radar to obtain a soil dielectric constant distribution diagram, and identifying a jump critical point of which a dielectric constant gradient value is greater than a gradient threshold value; s2, taking the jump critical point of S1 as a center, laying sampling clusters in a preset radius range, detecting the soil colloid content and the actually measured pH value, correcting the pH values of multiple points in each sampling cluster, performing difference judgment, and marking a jump confirmation cluster based on a judgment result; taking the jump confirmation cluster as a spatial interpolation breakpoint, performing partition independent interpolation based on the actually measured pH value, and generating a soil pH spatial-temporal change map with a jump boundary; according to the method, the buffer zones are arranged on the two sides of the breakpoint, and the enhancement correction model based on dielectric gradient driving is introduced, so that a clear and visible abrupt change boundary zone is successfully formed in the atlas, and the expression of color gradation sharpening of the abrupt change area is realized.

The utility model discloses a soil acidity and alkalinity sampling and detecting device for soil remediation, which relates to the technical field of soil remediation sampling and comprises a base, a connecting plate and a mounting plate. Limiting assemblies are arranged on the left side and the right side of the opposite face of the connecting plate and the mounting plate correspondingly, a driving mechanism is arranged on the middle side of the bottom of the mounting plate, the bottom of the outer wall of the driving mechanism penetrates through the bottom of the connecting plate and is provided with a sampling barrel, and a sampling mechanism is arranged at the bottom of the sampling barrel. And the top of the sampling mechanism penetrates into the sampling barrel, and a switch is arranged on the front face of the connecting plate. According to the soil sampling device, the limiting assembly is controlled to drive the sampling barrel to rotate downwards along the communicating groove in the base, and meanwhile, the pointer on the supporting column is matched with the scale marks on the sampling barrel, so that the sampling barrel continuously moves downwards to be inserted into soil, and soil of different depths can be conveniently sampled.

The invention relates to the technical field of garden landscape design, in particular to a garden landscape design method based on a virtual reality technology, which comprises the following steps: step 1, multi-source data acquisition and three-dimensional modeling: adopting a laser radar to scan a design site to obtain high-precision terrain point cloud data and generate a three-dimensional terrain model, the method comprises the following steps: performing three-dimensional scanning on garden plants to construct a plant resource library containing plant morphological parameters, growth characteristics and a growth cycle algorithm, acquiring ecological data of field illumination intensity, soil pH value, annual precipitation and wind direction and wind speed through a sensor array, and establishing a field ecological parameter database; and 2, constructing an immersive virtual scene: importing the terrain model into a VR engine, and automatically generating a basic landform based on an ecological parameter database, and through growth simulation and space-time rendering, realizing full-cycle presentation from short-term landscape to long-term ecological change, improving the customer scheme recognition degree to more than 90%, and reducing the modification rate by 60%.

The invention provides a soil health evaluation method. The method comprises the following steps: acquiring community characteristics of soil arthropods of to-be-evaluated soil; the soil arthropods are selected from at least one of diptera arthropods, arthropods of arachnids, coleoptera arthropods, hymenoptera arthropods and lepidoptera arthropods; the community characteristics comprise species composition and relative abundance of species; predicting soil indexes according to the community characteristics; the soil index is selected from at least one of a soil physicochemical index, a soil degradation index and a soil health index; the soil physical and chemical indexes are soil pH, soil total carbon, soil organic carbon and soil total nitrogen; the soil degradation indexes comprise a soil pH degradation index, a soil total carbon degradation index, a soil organic carbon degradation index and a soil total nitrogen degradation index; the soil health index is determined based on soil pH, soil microbial biomass nitrogen, soil respiration rate, soil total carbon, soil organic carbon, soil total nitrogen and soil bulk density; and performing soil health evaluation based on the soil indexes.

A functional microbial organic fertilizer for improving saline-alkali land, and its preparation method and application, belong to the field of fertilizer technology. In order to solve the technical problem that the high salt ion content in saline-alkali soil has multiple adverse effects on plant growth, the present invention provides a functional microbial organic fertilizer for improving saline-alkali land, which is prepared by a functional microbial agent prepared from Bacillus amyloliquefaciens, Copperbacterium insecticide, Trichoderma harzianum, Halobacterium gesneri and Bacillus halogenide, and a functional microbial carrier organic fertilizer added with furfural residue and citric acid residue. The functional microbial organic fertilizer provided has the functions of increasing the abundance of saline-alkali soil microorganisms, improving soil physical and chemical properties, regulating soil pH, increasing the proportion of soil aggregates, and increasing the content of available phosphorus and available potassium. The functional microbial organic fertilizer provided by the present invention can be used to effectively improve saline-alkali soil.

The invention provides a wetland ecological restoration effect comprehensive evaluation method and system, and belongs to the technical field of big data analysis. According to the method, real-time data of multi-dimensional ecological elements such as water turbidity, vegetation coverage density and soil acidity and alkalinity are collected, a multi-dimensional element correlation matrix based on time sequence correlation is constructed, and the dynamic change frequency of each element is captured. Core influence factors are screened by quantifying the contribution degree of each element to ecological restoration, weight distribution corresponding to clustered element clusters is determined, and then an accurate quantitative score is generated and mapped into a clear restoration condition level through multiplication and summation of inter-cluster correlation coefficients and weights item by item. Meanwhile, an evolution track is compared and analyzed by combining historical time sequence data, and the weight is dynamically adjusted to ensure that evaluation adapts to an actual repair process. The comprehensive, dynamic and accurate evaluation of the wetland ecological restoration effect is realized, scientific support is provided for the accurate adjustment of the restoration strategy, and the fine management of the wetland and the sustainable development of the natural environment are guaranteed.

The invention belongs to the field of edible fungus culture, and particularly relates to a method for reducing disease occurrence and increasing the yield of dictyophora rubrovolvata. According to the method, before planting, a rotary cultivator is used for ploughing soil, wood vinegar is sprayed, temperature and humidity are controlled after hyphae are put on the soil, wood vinegar is sprayed in the growth stage of bamboo eggs, and temperature and humidity are controlled until harvesting, so that the occurrence of diseases is reduced, and the yield of dictyophora rubrovolvata is increased. The invention provides a method for reducing diseases and increasing the yield of dictyophora rubrovolvata through measures of improving the pH value of soil, preventing soil caking, stimulating rapid growth of hyphae, stimulating twisting of the hyphae, reducing diseases and insect pests and the like. By means of the method, use of pesticides in the dictyophora rubrovolvata planting process can be reduced, the yield of dictyophora rubrovolvata is increased, and dictyophora rubrovolvata diseases are reduced.

The invention relates to the technical field of planting, and discloses an organic taro planting method which comprises the following steps: evaluating soil health, and measuring the pH value, nitrogen, phosphorus and potassium content and organic matter content of soil; installing an intelligent sensor system in a field, and collecting soil, climate and crop growth data; an intelligent monitoring system and an image recognition technology are used for monitoring diseases and insect pests in real time and early warning in advance; taking ecological control and biological control measures according to the monitoring result of the plant diseases and insect pests; the fertilization amount and the irrigation amount are controlled according to the intelligent monitoring data; a data analysis platform is utilized, management measures are optimized through an intelligent algorithm, and a planting strategy is adjusted. The method has the advantages of accurately identifying, preventing and controlling diseases and insect pests, reducing manual intervention, and effectively keeping soil health and crop yield at the same time.

The invention relates to the technical field of microbial soil remediation, in particular to a microbial composition for remediation of saline alkali soil, a microbial agent and application of the microbial agent. According to the characteristics of the bacillus subtilis KC000 and the paenibacillus mucilaginosus JDY001, different compounding proportions are set and applied to the saline-alkali soil, then the salt content of the saline-alkali soil is measured, and it is found that the soil nutrition and environmental conditions are obviously improved by applying the microbial agent, and the saline-alkali soil can be applied to the saline-alkali soil. The soil conditioner is beneficial to the growth and reproduction of paenibacillus mucilaginosus and bacillus subtilis in soil, is beneficial to improving the content of organic matters, rapidly available phosphorus and rapidly available potassium in the soil, increases the content of alkali-hydrolyzable nitrogen in the soil to a certain extent, reduces the pH value of the soil, accelerates salt leaching, inhibits salt return and reduces the salt content of the surface layer of the soil. Meanwhile, the microbial composition also has the effect of preventing and treating sheath blight.

The utility model belongs to the field of soil PH value monitoring devices, and particularly relates to a soil PH value monitoring device for greenhouse flower planting, which comprises an upper monitoring body. The position, close to the upper portion, of the front end of the upper monitoring body is fixedly connected with the rear end of the display screen, the bottom end of the upper monitoring body is fixedly connected with the top end of the monitoring plug, and a protection mechanism convenient to install is arranged on the outer side of the upper monitoring body and the outer side of the monitoring plug. Through the design of the convenient-to-mount protection mechanism, the functions of protecting the monitoring plug of the PH value monitoring device and being convenient to dismount are realized, and the problems that an existing device is not provided with an assembly capable of protecting a device main body, the monitoring plug of the PH value monitoring device is fragile, and if collision occurs, the device main body is damaged are solved. The problems that the monitoring plug of the PH value monitoring device is easily damaged and deformed and the later maintenance cost is increased are solved, and the protection of the monitoring plug of the PH value monitoring device is improved.

The invention relates to the technical field of agriculture, and particularly discloses a cherry tomato whole growth period fertilization method, which comprises the following steps: 10-15 days before field planting, deeply ploughing soil for 30-35 cm, exposing for 3-5 days, adjusting the pH value of the soil to 6.0-7.0, and adjusting the EC value to be less than 1.2 mS / cm; 600-800 kg / mu of carbon enzyme microbial fertilizer and 50-60 kg / mu of compound fertilizer are applied to the upper layer; 150-200 kg / mu of carbon energy soybean organic fertilizer and 100-120 kg / mu of silicon-calcium-magnesium fertilizer are applied to 0-20 cm of the middle layer; applying cattle and sheep manure of which the total amount is greater than or equal to 2000 kg / mu and fermented soybean meal of which the amount is 200-250 kg / mu to 20-40 cm of After fertilization, 300 times of EM bacteria liquid is immediately sprayed; according to the method, layered fertilization is combined with the microbial agent to activate soil activity, a long-acting nutrition library is constructed in a base fertilizer stage, and drip irrigation and foliage topdressing schemes at key nodes in a growth period are matched, so that the absorption efficiency of the cherry tomatoes on nitrogen, phosphorus, potassium and medium trace elements is remarkably improved; through fulvic acid, brassinolide and other substances, crop physiological status is rapidly adjusted, stress of high temperature, cloudy and rainy days and the like is effectively resisted, and fruit development continuity is guaranteed.

This invention discloses a soil improvement and fertilization fertilizer for rhizosphere micro-domains in saline-alkali land and its preparation method, belonging to the field of saline-alkali land management technology. The fertilizer consists of a microbial core, a slow-release fertilizer sub-outer layer, and a soil conditioner outer layer. The microbial core is composed of a compound microbial agent (composed of nitrogen-fixing bacteria, phosphate-solubilizing bacteria, and potassium-active bacteria), biochar, and a high-molecular organic membrane material. The slow-release fertilizer sub-outer layer is composed of chemical fertilizers, inhibitors (nitrification inhibitors and / or urease inhibitors), and amino acids. The soil conditioner outer layer is composed of a soil conditioner specifically for saline-alkali land improvement. The advantages of this invention are: (1) it first adjusts the soil pH and improves the soil structure, so that the microbial community can better adapt to the soil environment of saline-alkali land; (2) the biochar and the isolation membrane effectively protect the microbial activity, and release the microorganisms when the soil pH and base ions around the rhizosphere reach a low level, overcoming the saline-alkali barrier to microbial growth.

The invention relates to the technical field of soil improvement, and provides a method for efficiently utilizing saline-alkali land along the Yellow River district, which comprises the following steps: S1, preparing soil by a powder ridge machine when the saline-alkali land is dry, vertically penetrating into the soil through a spiral bit of the powder ridge machine, stopping descending of the spiral bit when an anti-electric conduction distance exists between the spiral bit and the top of an underground water level layer, and stopping descending of the spiral bit at an initial stage; transversely cutting the soil at a high speed of 26-35R / min for 3-5 minutes by using a spiral drill bit of the powder ridge machine, so that the spiral drill bit is negatively charged; s2, deep scarification and deep ploughing of the saline-alkali soil are conducted by the spiral drill bit at the low speed of 9-15 R / min; in the deep scarification and deep tillage process, electronegative composite microbial particle bacterial manure and electronegative enhanced super absorbent resin are sprayed, and a negative charge modified soil layer and a positive charge blocking layer are formed. The salt content of the soil is reduced by at least 0.1-0.3%, the pH value of the soil is reduced by 0.5-1, and the organic matter of the soil is increased by more than 0.05-0.1% at low cost and high efficiency.

The invention provides a charcoal-based microalgae fertilizer as well as a preparation method and application thereof, the method adopts a mode of co-fermentation of charcoal and microalgae to fix microalgae on charcoal, and co-fermentation is performed to prepare the charcoal-based microalgae fertilizer. The biochar-based microalgae fertilizer can significantly improve the crop yield, increase the chlorophyll content of crops, promote healthy growth of plants, optimize the pH value of soil, enhance the water and fertilizer retention capacity of soil, and significantly improve the soil nutrients and soil enzyme activity, and has significant advantages in the aspects of nutrition supply, soil health, environmental protection, crop quality improvement and the like. The biochar-based microalgae fertilizer has two forms of liquid and dry powder, can be flexibly used according to a specific agricultural production mode, has the advantages of easily available raw materials and simple preparation, is a sustainable fertilizer source, can comprehensively improve the soil fertility and the crop stress resistance, reduces the dependence on chemical fertilizers, and reduces the environmental pollution problem in agricultural production.

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 a pH value adjusting method and system for soil remediation, and relates to the field of soil pollution remediation, the pH value and ORP value of soil are obtained and analyzed, the dominant mode of pH change is determined based on coupling judgment logic, then the remediation agent adding strategy is adjusted, and the remediation effect is improved. The problem that the influence of microbial activity on pH is not fully considered in the prior art is effectively solved, blind adding of a repairing agent is avoided, the repairing accuracy and efficiency are improved, the problems that in the prior art, the biogeochemical process is not effectively coupled, the reason of pH change is difficult to accurately recognize, and the repairing agent is too excessive or insufficient are solved, and the repairing effect is improved. And the repairing accuracy and sustainability are improved.