189 results about "Semi aride" patented technology

The invention discloses a slope ecological restoration suitability evaluation method, medium and equipment, and relates to the technical field of slope ecological restoration, and the method comprises the steps: obtaining slope ecological restoration data, and obtaining a slope ecological restoration suitability evaluation index according to the data; calculating the weight of the evaluation index by adopting a fuzzy analytic hierarchy process based on the evaluation index; scoring each evaluation object according to the evaluation indexes, and establishing a fuzzy relation matrix; and according to the fuzzy relation matrix and the weight vector, obtaining a comprehensive suitability evaluation score of each evaluation object, and judging a suitability grade of slope ecological restoration. According to the method, the ecological restoration suitability of the arid and semi-arid land high and steep rock slope can be quantitatively evaluated.

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 invention discloses a soil wind erosion treatment device which comprises a wavy grid structure, and the wavy grid structure is of a wavy three-dimensional structure formed by plastic sheets and is composed of a plurality of wave crest parts, a plurality of wave trough parts and grid units evenly distributed between the wave crest parts and the wave trough parts. A biomass rope is wound on the outer side of the trough part; the whole wavy grid structure is made of a plastic material with heat conductivity and an electrostatic adsorption function; the wave-shaped grid structure is fixed to the ground through anchoring inhaul cables. The whole soil wind erosion treatment device can be laid in a modularized mode, the wave crest arrangement direction and the anchoring point density are optimized according to the wind erosion terrain and the wind direction, and the soil wind erosion treatment device is suitable for wind erosion sensitive areas in arid and semi-arid areas. In practical application, the device can effectively relieve direct scouring of strong wind to surface sand grains, meanwhile, condensation, water catchment and sand stabilization are induced through the structure of the device, the ecological vegetation restoration process is gradually introduced, and the device has the ecological property and engineering property.

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 relates to the technical field of semi-arid mining area land reclamation and ecological restoration, and discloses a semi-arid mining area reclamation double-surface-soil key layer and a refined construction method thereof.The semi-arid mining area reclamation double-surface-soil key layer comprises a wind-erosion-resistant key layer and a water and fertilizer maintaining key layer which are arranged from top to bottom; the anti-wind-erosion key layer comprises a coarse particle windproof layer and a fine particle cementing layer which are arranged from top to bottom; the water and fertilizer maintenance key layer is prepared from the following raw materials: fine sand or original sandstorm surface soil, a clay mineral-based physical structure regulator, an organic water-retaining agent and a biological enhancement matrix material; the raw materials of the coarse particle windproof layer comprise gravel and coarse sand; the raw materials of the fine particle cementation layer comprise fine sand or original sandstorm surface soil, a clay mineral-based physical structure regulator and an organic water retention capacity cementing agent. The reclamation double-surface soil key layer for the semi-arid mining area can effectively resist natural erosion, improve the soil structure, improve the water and fertilizer retention capability and promote the recovery of local host plants.

The invention provides a remote sensing estimation method for high spatial-temporal resolution crop evapotranspiration in an arid and semi-arid region, which comprises the following steps of: acquiring cloudless or less-cloudless high spatial resolution optical remote sensing data of a crop growing season in a research region, and calculating or inverting remote sensing earth surface parameters required by high spatial resolution evapotranspiration; comprising a vegetation index NDVI, a leaf area index LAI, a vegetation coverage FVC, a surface water index LSWI and a surface albedo; the method comprises the following steps: acquiring meteorological reanalysis data of daily scales ERA5-Land and GLADAS of a research area, wherein the meteorological reanalysis data comprises relative humidity RH, average temperature Ta, air pressure Pa, solar short-wave radiation # imgabs0 #, downward long-wave radiation # imgabs1 # and upward long-wave radiation # imgabs2 #; according to the technical scheme, multi-source remote sensing data, an evapotranspiration physical model and a space-time fusion technology based on evapotranspiration characteristics are utilized, and estimation of high space-time resolution evapotranspiration of the arid and semi-arid agricultural areas is achieved.

The invention relates to the technical field of grassland ecological restoration, in particular to a degraded grassland soil function improving method based on microbial community regulation and control, which comprises the steps of target plot preparation, improved matrix application, plant optimization configuration and the like. A multi-layer grassland ecosystem is constructed by combining microbial agents and plant functional characters, and the soil nutrient conversion efficiency and the vegetation stability are remarkably improved. The method can effectively solve the problems of insufficient attention of soil microflora and single vegetation in the prior art, is suitable for restoration engineering of degraded grassland in arid and semi-arid regions of Qinghai-Tibet Plateau in China, has wide popularization value, and can remarkably improve soil functions, restore vegetation coverage and biological diversity and assist construction of regional ecological safety barriers.

The invention discloses an optimal configuration method for land utilization of a cultivated wasteland in a salinization irrigation area, which mainly comprises two parts of land utilization quantity demand and cultivated wasteland spatial layout, and utilizes a method of coupling a water-salt equilibrium model SALTMOD and a land utilization CLUE-S model. The method comprises the following steps: combining an appropriate tillage and waste land ratio based on irrigation and drainage regulation and control and cultivated land salinity control with land utilization space distribution, and systematically exploring an appropriate salt wasteland space dynamic regulation and control scheme suggestion considering land utilization development and regional salinity income and expenditure balance from quantity constraint and space configuration; certain technical and data support is provided for saline-alkali soil treatment in arid and semi-arid irrigated areas.

The invention discloses a multifunctional composite microbial inoculant for improving drought resistance of plants as well as a preparation method and application of the multifunctional composite microbial inoculant, and belongs to the field of microbiology. According to the multifunctional composite microbial inoculant, by establishing a culture medium with gradually increased PEG (Polyethylene Glycol) concentration, progressive drought resistance induction is carried out on a known functional strain, so that the strain damage caused by single high-intensity stress is effectively avoided, and the strain can still keep relatively high activity and stability under a drought condition; progressive drought-resistant induction enables the strain to gradually adapt to the drought environment, so that the drought resistance of the strain is enhanced, the survival rate of the strain under the drought condition is increased, and the strain can better play a role in drought resistance and growth promotion; the multifunctional composite microbial inoculant is applied to plant seedling root system field planting, stress resistance phenotype induction and ecological adaptability improvement in arid / semi-arid regions, the colonization survival rate of seedling rhizosphere of caragana microphylla is increased to 2.3 times of that of conventional treatment, the transplanting survival rate of caragana microphylla is increased to 78% from 42%, and the multifunctional composite microbial inoculant has wide application prospects.

The invention provides a method for planting spring corn in a dry sloping field, and belongs to the technical field of agriculture. According to the technical system, through a three-level combination scheme of structural water storage, process regulation and control and systematic rotation, the transformation of dry-farming corn production from passive drought resistance to active water transfer is realized. Compared with a traditional mode, ineffective rainfall is converted into water available for root systems through deep scarification water storage and furrow rainwater collection; the resource waste is reduced by dynamic supplementary irrigation and slow-release fertilization, and a'small-amount and multiple-time 'supply rule of the semi-arid region is met; the crop rotation system remarkably improves the system stability through leguminous crop nitrogen fixation and corn high-light-effect complementation. According to the embodiment of the invention, the technical system provided by the invention realizes the breakthrough of 689.36 kg / mu of spring corn yield and 2.38 kg / m < 3 > of water utilization efficiency in the loess plateau semi-arid region, and provides a reproducible technical normal form for the arid region with annual rainfall of 400-500mm.

The invention discloses an irrigation area groundwater characteristic analysis method and system based on space-time evolution, and the method comprises the steps: collecting a time series data set of groundwater data of a target irrigation area in an arid and semi-arid region, and extracting a time series data set related to the water level value of groundwater from the time series data set; then, a data processing and analysis algorithm based on artificial intelligence and deep learning is introduced at the rear end to carry out time sequence aggregation analysis on the water level values, so that time sequence multi-scale semantic feature representation of the underground water level of the target irrigation area is captured; and on the basis of the underground water level time sequence characteristic representation, predicting an estimated value of the underground water level of the target irrigation area in the next 10 years. Thus, the dynamic change of the underground water level can be predicted based on the spatial-temporal dynamic evolution characteristics of the underground water in the target irrigation area, whether sustainable development of agricultural production and sustainable utilization of water resources are affected or not is determined according to the dynamic change, and more scientific and accurate support is provided for water resource management and decision making.

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.

The invention discloses a semi-arid region vegetation pattern construction method and device, and relates to the technical field of vegetation pattern construction and semi-arid region ecological restoration, and the method comprises the steps: obtaining water resource data, vegetation data and climate data of a semi-arid region; according to the water resource data, performing water resource evaluation on the semi-arid region to obtain a water resource evaluation result; according to the vegetation data and the climate data, performing vegetation water demand analysis on the semi-arid region to obtain a vegetation water demand analysis result; carrying out vegetation suitability evaluation on the semi-arid region, and screening vegetation species matched with water resource conditions of the semi-arid region; and carrying out vegetation pattern design on the semi-arid region, and determining a vegetation pattern design scheme so as to conveniently carry out vegetation planting operation on the semi-arid region. According to the method, reasonable matching of vegetation construction and water resources in the semi-arid region can be achieved, and the stability and the ecological service function of a regional ecological system are effectively improved.

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 discloses a self-filling slow-release gel material as well as a preparation method and application thereof, and the self-filling slow-release gel material provided by the invention comprises a gel base material and a moisture absorption compound loaded on the gel base material, wherein the gel base material contains a hydrophilic polymer, lignosulfonate and an optional photo-thermal conversion material. The self-irrigation slow-release type gel material can effectively collect moisture in the atmosphere, has the characteristic of high water absorption rate, shows the characteristic of rapid adsorption kinetics and the characteristic of relatively high water absorption rate, can load nutritional ingredients on the gel base material, and can be applied to the process of clean water production or soil layer construction in an arid region, so that the soil layer construction efficiency is improved, and the soil layer construction efficiency is improved. The device can continuously provide irrigation for plants by taking air as a water source, realizes the functions of self-water supply and slow-release fertilization, solves the problems of water resources and difficult plant survival in arid, semi-arid and seasonal lacking areas, and has potential commercial value and application prospect.

The present invention relates to the field of ecosystem restoration technology, and in particular to a seed capsule suitable for arid and semi-arid areas, and a preparation method and application thereof. The seed capsule includes a cylindrical seed core, a spacer layer and a protective layer from the inside to the outside, the seed core includes pioneer plant grass seeds, potassium humate, chitosan, camphor, probiotic spore powder and sand, the spacer layer is provided with pioneer plant grass seeds different from those on the seed core, the seed capsule is a triangular prism, the spacer layer is provided with three groups of seedling holes along the circumference of the seed core, the seedling holes are located inside the side of the triangular prism, and the protective layer includes clay, cattle and sheep manure, biochar, fruit crushed material, water retaining agent, compound fertilizer and guar gum. The seed capsule provided by the present invention has the properties of salt resistance, drought resistance and cold resistance, and can withstand harsh natural environments, wherein the seed core is relatively dry, can create a long-term seed dormancy environment, and has a small requirement for the application time period.

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.