157 results about "Semi aride" patented technology

The invention discloses a sand landscape pattern optimization method based on ecological water demand inside and outside rivers and lakes, and relates to the technical field of ecological restoration and water resource management, and the method comprises the following steps: 1, collecting a remote sensing image, field ecological data and hydro meteorological data, and carrying out the preprocessing to obtain ecological hydrological element data; 2, calculating the ecological water demand of the semi-arid sand landscape according to the ecological hydrological element data; 3, constructing a nonlinear-multi-target sand landscape pattern optimization model according to the ecological water demand and the ecological hydrological element data; 4, solving the nonlinear-multi-target sand landscape pattern optimization model by adopting a multi-target optimization algorithm according to the condition constraint to obtain a parameter optimal solution; and 5, constructing a sand landscape pattern strategy according to the parameter optimal solution. By comprehensively optimizing water and sand resource allocation and ecological water demand inside and outside rivers and lakes and cooperatively deploying all landscape elements, sustainable utilization of sand landscape water resources and improvement of an ecological hydrological function are achieved.

The utility model relates to the technical field of mining area restoration, in particular to a grass planting bag for regreening and restoration of a mining area, which comprises at least one grass planting unit, and each grass planting unit comprises a grass planting bag layer, a fiber cotton layer and a breathable soil restoration layer which are sequentially arranged from top to bottom. The grass planting wrapping layer is filled with grass seeds and matrix soil, and the breathable soil restoration layer is filled with ceramsite and soil restoration nutrient organic matter in a staggered mode. According to the grass planting bag for re-greening and repairing the mining area, the grass planting bag layer is filled with the grass seeds and the matrix soil, the fiber cotton layer is arranged in the middle, and the two layers are comprehensively overlaid, so that the grass planting bag has the advantages of heat preservation, moisture preservation, water retention, degradability and high air permeability, the germination and survival rate of the grass seeds can be increased, and the rapid re-greening effect in the arid and semi-arid mining repairing area is achieved; furthermore, ceramsite and soil remediation nutrient organic matters are filled in the breathable soil remediation layer in a staggered manner, so that the remediation of the soil in the mining area can be further realized.

The invention discloses a GIS-based arid and semi-arid region farmland irrigation priority dynamic evaluation and zoning method, system, device and medium, and belongs to the technical field of farmland irrigation priority evaluation and zoning, and the method comprises the steps: collecting various types of remote sensing satellite data of a to-be-irrigated region; performing pretreatment; identifying the boundary and range of the to-be-irrigated area, and extracting a remote sensing image of the to-be-irrigated area; based on the remote sensing image of the to-be-irrigated area and the basic geographic information, parameter calculation is carried out, and normalization processing is carried out; performing superposition calculation on each normalized parameter according to a set weight to obtain an irrigation priority index; partitioning the to-be-irrigated area based on the irrigation priority index to generate an irrigation priority map; and judging whether agricultural irrigation management requirements are met or not according to preset conditions. According to the method, temperature vegetation drought indexes, normalized moisture indexes, water resource accessibility and crop economic value parameters are coupled; the irrigation priority index weight can be automatically adjusted according to a season strategy.

The invention discloses a device for increasing the grafting survival rate of Korean pine in a semi-arid region and an application method, and belongs to the field of Korean pine grafting. Comprising a film covering assembly, and a movable clamping mechanism is arranged below the film covering assembly; a grafting clamping mechanism is arranged above the film covering assembly; the film covering assembly comprises a top plate, a penetrating type first penetrating opening is formed in the right side of the upper surface of the top plate, a T-shaped sliding groove is formed in the position, located on the outer side of the first penetrating opening, of the upper surface of the top plate, a T-shaped sliding strip is slidably connected to the inner side of the T-shaped sliding groove, and an arc-shaped gear ring is fixedly connected to the top of the T-shaped sliding strip. According to the device, the covering film can move up and down while being wound horizontally and circumferentially through the film covering assembly, the covering range is effectively expanded, compared with traditional pure horizontal circumferential winding, the Korean pine grafting part can be covered more comprehensively, the covering blind area caused by width limitation of the covering film is reduced, and the protection effect of the grafting part is improved.

The invention relates to the field of ecological hydrology, and discloses an arid and semi-arid region plant ecological water consumption calculation method, which comprises the following steps: acquiring meteorological, soil and vegetation phenological data; constructing a root system depth dynamic evolution model, and updating the maximum depth of the root system day by day; determining the depth weight of the effective moisture extraction layer based on the dynamic root system distribution; calculating the weighted average effective soil water content; and outputting daily-scale ecological water consumption in combination with the corrected transpiration scale model. By coupling meteorological driving, soil moisture stress and a dynamic regulation and control mechanism of a plant growth stage on a root system, the water consumption inversion precision is remarkably improved, the root-mean-square error is reduced by more than 25% through actual measurement verification, and a high-precision quantification tool is provided for ecological water demand evaluation and water resource management.

This application discloses a comprehensive treatment method for salinized soil in semi-arid region, comprises: stripping and collecting the topsoil; spreading sandy soil and / or loess soil as a imported soil layer; spreading an anti-seepage layer, a salt barrier layer and a membrane layer successively on the imported soil layer; mixing clay into the topsoil to obtain mixed soil; blending saline-alkali land conditioner with the mixed soil to obtain planted soil; spreading the planted soil on the membrane layer to obtain a planting layer. The method combines physical, hydraulic, chemical and biological remediation methods to comprehensively manage saline-alkali soil in semi-arid areas. It consumes less water resources, has a shorter treatment cycle, shows quick results, is conducive to plant growth, and can effectively inhibit the return of salt.

The invention relates to the technical field of ecological environment restoration, in particular to an arid / semi-arid mining area waste dump soil reconstruction method which comprises the following steps: S1, stripping surface soil of a waste dump, and leveling and compacting the surface of the waste dump to obtain a parent material layer; s2, coal gangue and an ionic curing agent are mixed, the rotating speed is 50 rpm, stirring is conducted for 10 min, and a mixture is obtained; the parent material layer is covered with the mixture in a layered mode, the thickness of each layer is 15-20 cm, after the mixture is covered every time, the mixture is compacted, then the next layer of mixture is covered, and after the last layer of mixture is compacted, a water-resisting layer is obtained; s3, the water-resisting layer is covered with the water storage layer and laid flat; and S4, covering the water storage layer with the vegetation layer. Heavy metal pollutants in the coal gangue can be effectively fixed, surface water and surrounding soil are prevented from being polluted by leaching of the coal gangue, good durability is shown, and functions can be kept for a long time.

A direct impure water electrolysis (DIWE) approach generates green hydrogen in a modified proton-exchange membrane pure water electrolyzer (PEM-PWE), that avoids fouling, corrosion, deactivation, and side reactions normally caused by the ions in impure or saline waters. Conventional electrolyzers require ultrapure deionized (DI) water as feed because: 1) the proton-exchange membrane (PEM) and electrocatalysts are readily poisoned by the anions, e.g., chloride, and cations, e.g., sodium, calcium, and magnesium that are present in seawater or brackish water; and 2) the chloride anions readily form chlorine at the PEM-electrolyzer anode, which is toxic and corrosive. This adds substantially to the cost and complexity of the electrolyzer plant due to the water treatment plant needed for producing ultrapure DI water. The tolerance of impure water as described herein avoids reverse osmosis and deionization requirements steps which is beneficial for use in semi-arid regions with a paucity of fresh water.

The invention belongs to the technical field of hydrological models and flood forecasting, and discloses a time-varying outflow coefficient-based flood runoff production simulation method, which comprises the following steps of interflow existence judgment, hydrological communication mechanism modeling, time-varying outflow coefficient model construction and parameter calibration and verification. According to the method, the behavior of the interflow is accurately described, the inflection point of the flood recession section can be accurately simulated, the flood forecasting precision of the semi-arid and semi-humid region is remarkably improved, and reliable technical support is provided for flood control and disaster reduction.

The invention discloses a method for repairing alkaline cadmium-polluted farmland in arid and semi-arid regions and application of the method, and belongs to the technical field of soil repairing. According to the method, the alkaline cadmium polluted farmland soil in the arid and semi-arid areas is subjected to deep ploughing treatment, and organic materials are applied to improve the soil fertility and the environment and health quality. On the basis, an intercropping planting system suitable for the arid and semi-arid land area is constructed, low-cadmium-accumulation grain crops and high-cadmium-accumulation plants are reasonably selected according to the ecological conditions and crop characteristics of the area, and an intercropping combination of low-absorption grain crops and enriched economic crop plants is formed. According to the system, organic unification of source reduction of heavy metal pollution in soil, pollution control in the planting process and continuous and safe utilization of the farmland is achieved, the dual goals of pollution remediation and farmland production are taken into account, and pollution reduction and collaborative improvement of economic benefits are achieved; and a feasible technical path is provided for ecological restoration of alkaline heavy metal polluted farmlands in arid and semi-arid regions.

A direct impure water electrolysis (DIWE) approach generates green hydrogen in a modified proton-exchange membrane pure water electrolyzer (PEM-PWE), that avoids fouling, corrosion, deactivation, and side reactions normally caused by the ions in impure or saline waters. Conventional electrolyzers require ultrapure deionized (DI) water as feed because: 1) the proton-exchange membrane (PEM) and electrocatalysts are readily poisoned by the anions, e.g., chloride, and cations, e.g., sodium, calcium, and magnesium that are present in seawater or brackish water; and 2) the chloride anions readily form chlorine at the PEM-electrolyzer anode, which is toxic and corrosive. This adds substantially to the cost and complexity of the electrolyzer plant due to the water treatment plant needed for producing ultrapure DI water. The tolerance of impure water as described herein avoids reverse osmosis and deionization requirements steps which is beneficial for use in semi-arid regions with a paucity of fresh water.

Design, manufacture, and production of an engineering product that has the potential to assist and change agriculture in semi-arid and arid areas. Designing and manufacturing an engineering product in the form of absorboost tiles, these absorboost tiles assist in the replacement of the functions of soil, for easy interchangeability these absorboost tile dimensions are according to the effect root zone of the plant type, and the anther aim of absorboost tiles have durability, so that can use for agriculture with multiple times with storage capability.

The invention discloses bacillus NJAU-N6 with nitrogen fixation, low temperature resistance and drought resistance and application of the bacillus NJAU-N6, the strain is classified and named as Paenibacillus illinoisis, the strain is preserved in the China General Microbiological Culture Collection Center (CGMCC), and the preservation number is CGMCC No.35728. The bacillus NJAU-N6 has the advantages that the bacillus NJAU-N6 can be applied to nitrogen fixation, low temperature resistance and drought resistance; the invention discloses the capability of the compound in soil nitrogen fixation and soybean growth promotion. The invention also discloses a microbial inoculum prepared from the strain and application of the microbial inoculum in soil nitrogen fixation and soybean growth promotion. The strain disclosed by the invention has a relatively wide temperature adaptation range and relatively strong drought resistance, can stably play a nitrogen fixation role and a function of promoting soybean growth in a low-temperature and drought-resistant soil environment, and is particularly suitable for planting scenes of crops such as soybeans in semi-arid windy desert areas in northeast China; the method has good popularization and application values in soil fertility improvement and crop yield increase in the region.

The invention provides a method and device for inverting the moisture content of a reconstructed soil layer, electronic equipment and a storage medium, and the method comprises the steps: detecting the structure of the reconstructed soil layer through a ground penetrating radar system, and obtaining the electromagnetic wave propagation data of each layer of the reconstructed soil layer; detecting the reconstructed soil layer provided with the reflector based on a ground penetrating radar system to obtain two-way travel time data, obtaining a relative dielectric constant of the dielectric layer based on the two-way travel time data and the burying depth of the reflector, and obtaining an empirical formula based on the relative dielectric constant; and correcting the empirical formula based on the actual moisture content of the reconstructed soil layer to obtain a moisture content model, and performing inversion based on the moisture content model to obtain the moisture content of the reconstructed soil layer. By combining the ground penetrating radar system and the corrected empirical formula, the method can significantly improve the accuracy of soil layer moisture content inversion, and is especially suitable for land reclamation and ecological restoration engineering in arid and semi-arid strip mine areas.

This invention discloses an anti-clogging patch-type irrigation device and drip irrigation tape, comprising an inlet section, a main body, and an outlet section. The inlet section contains an inlet chamber and a filter structure; the main body contains several parallel anti-clogging channels, within which multiple diverters are spaced along the length of each channel. These diverters divide the water flow into at least two branches, causing impact when the branches converge; the outlet section has an outlet chamber communicating with the anti-clogging channels, and the outlet chamber has an outlet and a sand discharge hole. This invention uses diverters to cause water flow splitting and impact, transforming impurities from sidewall deposition to central convergence and flushing. Combined with the dual-outlet structure of the outlet and sand discharge hole, it achieves excellent anti-clogging performance and self-cleaning function, making it suitable for integrated water and fertilizer irrigation in arid and semi-arid regions.

The application relates to the technical field of hydraulic erosion tests, and discloses a device and method for testing the hydraulic erosion characteristics of a slope in an arid and semi-arid area, which comprises a platform plate and a water storage tank, the platform plate is arranged on one side of the water storage tank, a sampling mechanism is arranged on the platform plate, the sampling mechanism comprises a sampling pipe, the sampling pipe is arranged at the bottom of the platform plate, two round plates are integrally formed on the platform plate, and a swing plate is arranged between the two round plates. According to the length of the slope, the number of beam rods is increased or reduced to match the test requirements of slopes with different lengths, the beam rods are installed on the slope after the number of the beam rods is selected, the slope is continuously sprayed through a spraying mechanism after installation, the soil of the slope is inserted and sampled through the sampling pipe after spraying, the water absorption of the soil at different depths can be detected, and the test process does not require too much manual participation, so that manpower is saved.

The invention provides an early sowing and rainwater collecting planting method for arid and semi-arid areas, and belongs to the technical field of crop cultivation. The invention provides a millet planting method in arid and semi-arid regions, which comprises the following steps: when a soil layer is unfrozen by at least 20cm in spring, performing full film mulching and sowing on seeds and seed fertilizers subjected to seed dressing treatment; and supplementing a foliar fertilizer in the key growth period of the millet. According to the method, through seed dressing and full-film sowing of seed fertilizer, in combination with supplement of foliar fertilizer, early sowing and early maturing of millet can be completed only through rainfall, the utilization rate of fertilizer, pesticide and water is remarkably increased, the yield is increased, and the cost is saved.

The invention discloses a slope protection method and system based on active and passive danger reduction measures, and belongs to the field of disaster protection, and the method comprises the steps: calculating a first risk of a target slope through a numerical model; designing and implementing an active risk reduction measure based on the first risk; wherein the active danger reduction measures comprise a runoff regulation and control measure and a biological coupling measure; calculating a second risk of the target slope after the active risk reduction measure is implemented by using the numerical model; designing and implementing passive risk reduction measures based on the second risk; wherein the passive danger reduction measure comprises a drainage measure and an interception measure. Therefore, by means of the method, the climate limitation of arid and semi-arid areas can be overcome, and slope protection is effectively achieved.

The invention discloses an arid and semi-arid region slope rainwater collecting and infiltrating irrigation delaying greening device which comprises a rainwater collecting and infiltrating irrigation box fixed to a slope, and the rainwater collecting and infiltrating irrigation box is used for collecting rainwater and conveying the collected rainwater to plant root system positions through a seepage structure; the side face and the bottom plate of the rainwater collecting infiltrating irrigation box are of a closed structure, a plurality of seepage holes are formed in the side face close to the bottom, seepage cotton ropes sleeved with silicone tubes are connected to the seepage holes, and the seepage cotton ropes extend to the position needing irrigation. The rainwater collection infiltrating irrigation box is filled with a water storage material, and the water storage material is used for storing collected water; a PP plastic box cover, a one-way permeation phase conversion film and polyester sandwich screen cloth are respectively arranged at the top of the rainwater collection infiltrating irrigation box from bottom to top; when it rains, rainwater passes through the three-layer structure and enters the rainwater collection infiltrating irrigation box. The problems that the rainfall capacity of arid and semi-arid areas is small, space-time distribution is uneven, and existing slopes cannot be effectively greened are solved; and the cost for maintaining slope greening through sprinkling irrigation and drip irrigation is too high.

The invention discloses a pseudomonas NJAU-XP11 with phosphate solubilizing ability, low temperature resistance and drought resistance and application of the pseudomonas NJAU-XP11. The invention relates to pseudomonas sp. NJAU-XP11, which is classified and named as Pseudomonas sp. Pseudomonas sp., is preserved in China General Microbiological Culture Collection Center (CGMCC), the preservation date is August 18, 2025, and the preservation number is CGMCC No.35651. The pseudomonas sp. NJAU-XP11 is named as Pseudomonas sp. Pseudomonas sp. NJAU-XP11 and is preserved in China General Microbiological Culture Collection Center (CGMCC). The invention discloses the capability of dissolving phosphorus in soil and promoting soybean growth. The invention further discloses a microbial inoculum prepared from the bacillus subtilis and application of the microbial inoculum in soil phosphate solubilization and soybean growth promotion. The strain provided by the invention has relatively wide temperature and drought adaptive capacity, can play the functions of dissolving phosphorus in soil and promoting soybean growth in relatively low-temperature and relatively drought soil, is suitable for planting crops such as soybeans in semi-arid windy desert areas in northeast China, and has good popularization and application values.

This invention discloses a method for improving saline-alkali land in semi-arid regions to enhance plant diversity, comprising the following steps: S1, construction of treatment units; S2, arrangement of treatment units; S3, preliminary soil treatment; S4, planting of plants; and S5, intensive soil treatment. This invention addresses the problems of high salinity and species scarcity in saline-alkali land in semi-arid regions, providing a complete treatment method. By deploying multiple treatment units to form a treatment system, combined with the soil conditioner specifically designed for this invention, the high salinity of saline-alkali soil in semi-arid regions can be alleviated. Simultaneously, by incorporating a phytoremediation system primarily composed of alkali plantations, the biodiversity of exposed saline-alkali land in semi-arid regions can be effectively enhanced. Furthermore, considering seasonal factors and other factors such as rainfall, a one-year treatment plan is ultimately developed. After treatment, the land can be selectively developed into ornamental wetlands or agricultural land, possessing significant economic value.

The invention discloses a composite filling reinforcing agent for unearthed woodware in a semi-arid environment as well as a preparation method and application of the composite filling reinforcing agent, and belongs to the technical field of reinforcing materials for rotten wood cultural relics in the semi-arid environment. The composite filling reinforcing agent for the unearthed woodware in the semi-arid environment comprises the following components: a carboxylated cellulose nanofiber solution, a polyanionic cellulose solution and a carboxymethyl chitosan solution. The three cellulose derivatives are used as reinforcing agents, and isopropanol is selected as a penetration enhancer. The problem of permeability of the carboxylated cellulose nanofiber, the polyanionic cellulose and the carboxymethyl chitosan is solved, and the carboxylated cellulose nanofiber, the polyanionic cellulose and the carboxymethyl chitosan can be better brought into a cavity generated by the rotten wood, so that the permeability of the reinforcing agent is enhanced; in addition, the color difference of the reinforcing agent belongs to an acceptable range, and possibility is provided for rescue protection of unearthed rotten wood cultural relics in semi-arid regions.

The application discloses a method for improving productivity of alfalfa grassland in semi-arid area, which comprises the following steps: sowing in the same period strip sowing mode of planting one row of alfalfa every two rows of feed oat; harvesting mixed forage of alfalfa and feed oat only once in the first year, and not ploughing the land after mowing; in the second year, sowing two rows of feed oat in the alfalfa row without ploughing from late April to early May after the alfalfa turns green; harvesting mixed forage of alfalfa and feed oat in the first harvest in the second year; harvesting alfalfa grass in the second and third harvests; in the third year and the following years, sowing two rows of feed oat in the alfalfa row without ploughing after the alfalfa turns green from late April to early May; in the third year and the following years, harvesting mixed forage of alfalfa and feed oat in the first harvest at the initial flowering period of alfalfa in late June; and harvesting alfalfa grass in the second and third harvests. The application has high utilization rate of natural precipitation, does not need irrigation, has high yield, and can effectively improve the productivity of alfalfa grassland in semi-arid area.

The invention discloses a water-saving and salt-controlling method for saline-alkali soil in arid and semi-arid areas, and relates to the technical field of saline-alkali soil treatment. The arid and semi-arid region saline-alkali soil water-saving salt control method comprises the steps that saline-alkali soil data are collected through a sensor, and the saline-alkali soil data comprise the pH value, the EC value, the underground water level difference value, the soil water content and other indexes; according to the saline-alkali soil data, opening or closing the drip irrigation device through a first judgment condition; and according to the saline-alkali soil data, opening or closing the drainage device through a second judgment condition. According to the water-saving and salt-controlling method for the saline-alkali soil, drip irrigation and saline-alkali water discharge can be performed on the saline-alkali soil according to the data acquired in real time and the first judgment condition and the second judgment condition, accurate irrigation can be performed, saline-alkali water in soil can be discharged, the salt content of the soil is reduced, and the water-saving and salt-controlling effects of the saline-alkali soil are improved. The rising speed of saline-alkali water in the saline-alkali soil can be effectively controlled, so that the treatment effect of the saline-alkali soil is improved.

The application discloses a natural solution-based ecological restoration method for salinized land in a semi-arid area, which comprises the following steps: S1, demarcating a plurality of ecological restoration areas; S2, planting plants; in each ecological restoration area, high-level plants are planted in a circle at the edge of the ecological restoration area, and medium-level plants and low-level plants are sequentially planted in circles towards the inside of the ecological restoration area; and S3, setting the ecological restoration area; the application can form an ecological restoration area with multi-level plant distribution, which is helpful to restore and improve biodiversity; through the setting of the first groove, the sand barrier and the spacing therebetween, the seeds of plants at various levels can be deposited in the first groove or nearby along with the wind in subsequent years to achieve the purpose of sowing and growth, multi-level plants along the first groove are formed, the ecological restoration effect is strengthened, subsequent sowing by using wind power is facilitated, and manual dense planting is not needed.

The invention belongs to the technical field of ecological restoration, and particularly relates to a method for rapidly and stably restoring vegetation in a backtillage sand land. The method comprises the following steps that S1, a plurality of straw bags are prepared; s2, grass seeds and sandy soil are mixed; s3, the sandy soil mixed with the grass seeds is put into a grass bag; s4, the filled straw bags are laid on the surface of the sand land to be restored according to set intervals; and S5, grass seeds are sown on the surface of the sand land to be recovered between the laid grass bags. The grass bags serve as sand barriers and planting units at the same time, sand fixation and seed source integration is achieved, the problems that sand land seeds are prone to displacement and the seedling survival rate is low are effectively solved, and the method has the advantages of being rapid in effect taking, durable, stable, low in cost, environmentally friendly and easy to popularize and is particularly suitable for ecological restoration of desertification grassland in arid and semi-arid areas.

The invention discloses a solar air water taking device which comprises a solar panel, a cooling fan, a cooling fin, a semiconductor chilling plate, glass, a water absorbent, a drainage pipe, a tee joint, a pipeline, a supporting rod, a shell, a draft fan, a battery, a controller and a driver and is used for solving the water use problem of plant irrigation and urban landscaping in arid regions. The shell is provided with a solar panel mounting seat, a glass mounting seat and upper and lower water collecting tanks. The solar panel is installed on the solar panel installation seat, and the glass is embedded in the glass installation seat. The upper end and the lower end of the cooling fin are connected with the cooling fan and the heat release end of the cooling fin respectively. One end of the drainage tube is connected with the water absorbent, and the other end of the drainage tube is connected with the lower water collecting tank; and outlets of the upper and lower water collecting tanks converge through pipelines and tees. The solar panel supplies power to the battery, and the controller regulates and controls all the parts to operate through the driver. The device is powered by the solar panel, takes water through condensation and adsorption, and is suitable for irrigation in arid and semi-arid areas.

The application discloses a kind of fusion multi-source multi-temporal remote sensing's semi-arid shallow covering area stratum lithology classification method, collects multi-period multi-spectral remote sensing image and polarization SAR data and pre-processes, calculates optical and radar vegetation index, normalizes and constructs feature dataset;Combined with field investigation label sample, construct pixel-level sample set, after inputting multi-scale time series attention network training, output GeoTIFF format classification result graph. Overall realization is based on the stratum lithology classification of semi-arid shallow covering area of multi-source multi-temporal remote sensing data, breaks through the application limit of existing remote sensing lithology classification method in semi-arid shallow covering area, gets rid of the dependence of many existing deep learning classification algorithms on regional level image sample, overcomes the training data acquisition bottleneck caused by stratum lithology unit boundary blur in semi-arid shallow covering area, improves the reliability of lithology classification under complex environmental conditions in semi-arid shallow covering area.

The invention discloses a tobacco growth-promoting, drought-resisting and drought-enduring strain and application thereof, the growth-promoting, drought-resisting and drought-enduring strain Kluyvera intermedia and Pseudomonas lini are screened from tobacco field soil in an arid region by adopting a gradual screening strategy, and the tobacco growth-promoting, drought-resisting and drought-enduring strain has the advantages that the phosphorus dissolving capacity is strong, the yield is high, and the yield is high. And the strain has the advantage of high capability of producing indoleacetic acid, siderophore and 1-aminocyclopropane-1-carboxylic acid deaminase. In the tobacco planting process, a microbial composition containing Kluyvera intermedia and / or Pseudomonas lini is applied, so that the agronomic traits of tobacco are remarkably influenced, the growth-promoting and drought-resisting capabilities of the tobacco are remarkably improved, for example, the plant height, the stem diameter and the leaf area are increased, the biomass is increased, and the growth-promoting and drought-resisting capabilities of the tobacco are also improved. Meanwhile, the drought tolerance of the tobacco, such as the osmotic stress resistance, is remarkably enhanced, the yield and the output value of the tobacco in a drought environment are favorably improved, and the method has wide application potential in drought and semi-drought tobacco planting areas.

The invention provides a silage corn slow-release fertilizer and a preparation method thereof, and belongs to the technical field of slow-release fertilizers. The method comprises the following steps: mixing zirconocene dichloride and ethynyl biphenyl-3, 3 ', 5, 5'-tetracarboxylic acid, adding N, N-dimethylacetamide and water, reacting at 50-80 DEG C for 15-20 hours, cooling to room temperature, and washing with N, N-dimethylacetamide to obtain a porous carrier; mixing the porous carrier with dipotassium phosphate, ammonium chloride and water, and dispersing to obtain dispersion liquid; adding agricultural wastes into the dispersion liquid, uniformly stirring, slowly dropwise adding ammonium persulfate, and adding a monomer and a cross-linking agent to obtain a mixed solution; reacting for 1-2 hours at 60-80 DEG C in an inert atmosphere to obtain a semi-finished product; and washing and drying the obtained semi-finished product to obtain the silage corn slow-release fertilizer. The slow-release fertilizer provided by the invention can improve the water retention capacity of soil and prolong the nutrient release time, and is suitable for sandy soil or arid and semi-arid regions.