31 results about "Topsoil" patented technology

This application relates to the field of ecological restoration technology, and discloses a vegetation restoration system for drawdown zones and its construction method. The system includes laying equipment and a roller. A drive motor of the laying equipment drives the winding roller to release a coil. The roller includes a fixing rod, is filled with superabsorbent polymer resin, and is sequentially wound with an inner base mat, a middle matrix containing plant stem nodes and fungal spores, and an outer mesh. The inner base mat is interwoven with capillary water-conducting bundles, the bottom of which is inserted into the fixing rod and embedded in the resin. The outer mesh is secured with gravity lever-type anchoring nails via eccentric hinges. During construction, the motor releases the coil at a uniform speed, causing the roller to unfold along the slope. The anchoring nails, as they rotate, droop under gravity and penetrate the topsoil layer for synchronous anchoring. The fixing rod, remaining at the bottom, lifts water upwards through the absorbent resin and water-conducting bundles. This invention achieves mechanized laying of base mats on steep slopes, constructs a capillary water-lifting system to alleviate drought, and improves vegetation survival rates.

This application relates to the field of topsoil quality testing technology, specifically to a method, system, device, and equipment for testing topsoil quality in power transmission and transformation projects. The method includes: collecting topsoil data from mixed soil samples at different depths in various research plots and standard topsoil data from standard mixed soil samples; obtaining comprehensive nutrient indices and comprehensive microbial diversity indices at the same depth for each research plot, as well as the average coupling characteristic value of the research plot; determining nutrient remediation factors and microbial remediation factors for the research plots, and constructing topsoil remediation factors; and determining the topsoil quality testing results for the power transmission and transformation projects in the research plots based on all topsoil data, average coupling characteristic values, and topsoil remediation factors. This application can improve the quality of topsoil quality testing in power transmission and transformation projects.

This invention discloses a vertical adaptive contour-following straw clearing and covering device for hilly sloping farmland, comprising a dual air spring adaptive contour-following suspension, a vertical straw clearing attitude adjustment mechanism, an umbrella-shaped linkage straw clearing radius stepless adjustment mechanism, and a passive contour-following elastic covering device. The straw clearing mechanism mainly consists of an umbrella-shaped linkage radius adjustment drive cylinder, an umbrella-shaped linkage low-wear angle adjustment slider, and a straw clearing spring tooth assembly, used for continuous stepless adjustment of the straw clearing operation radius and synchronous high-precision control of the spring tooth operation angle, completing the directional throwing and clearing of straw in the seed strip. The contour-following suspension mechanism mainly uses two sets of symmetrically arranged adaptive contour-following springs and contour-following rods to achieve adaptive contour-following of undulating hilly terrain and adjust the operating height of the device. The attitude adjustment mechanism drives the attitude adjustment swing shaft to deflect through a built-in angle drive motor, precisely controlling the straw throwing path. The passive contour-following elastic covering device uses a passive contour-following buffer spring and telescopic rod structure to drive the covering shovel to adaptively conform to the ground surface, adjust the covering amount, and prevent straw from slipping back into the seed strip during sloping operations. During operation, the device cleans the seedbed on the straw-covered no-till surface through the straw-cleaning mechanism, while the covering soil device simultaneously covers and fixes the straw with topsoil. The entire process of straw cleaning, terrain shaping, posture adjustment, and anti-slip covering is completed in one operation, providing a stable and qualified seedbed environment for no-till sowing.

This invention discloses a method for creating a peony flower sea landscape with soil stabilization and slope protection functions. The steps include: slope preparation; improving the slope soil with compound nutrient soil and digging planting holes; mixing peonies with different root types on the slope; after planting the peonies, evenly sowing different grass seeds on the peony slope; and cultivating and maintaining the vegetation. Advantages include: mixed planting according to peony root type and slope, combined with retaining walls and soil improvement, increases the survival rate by 8.5%; three-dimensional intercropping of shrubs and grasses for soil stabilization and slope protection achieves 99% green coverage and a topsoil loss rate of 0.2% within two years, combining ecological restoration and flower sea landscape, with low cost and easy promotion.

The present application relates to oil crop planting technical field, specifically to a kind of rape whole seedling cultivation method, comprising the following steps: carrying out seed screening and sunning treatment, selected planting plot and complete deep ploughing and base fertilizer application;Mix the treated rape seed and millet seed according to fixed proportion, use film mulching hole sowing cylinder to carry out single hole sowing, after sowing, use fine soil to cover and compact seed hole;Monitoring field emergence, seedling grows to two to three leaf stage, spray triclopyr herbicide to remove millet seedling, according to soil moisture and seedling condition, carry out water and fertilizer management;Using the way of combining physical and chemical, prevent and cure disease and insect pest during the growth period of rape.The present application breaks the soil pressure and soil hardening obstacle for rape seed by the strong topsoil capacity of millet seed germination, matches film mulching soil conservation, makes the emergence rate of rape increase from less than 70% to more than 90%, and the topsoil failure rate decreases to less than 5%.

A method and structure for ecological slope construction based on netting and topsoil spraying includes: cleaning the netting and topsoil spraying slope surface; laying a bottom layer of moisture-retaining blankets, with the bottom layer blankets overlapping at a set distance, and fixing the bottom layer of moisture-retaining blankets to the bottom layer of topsoil and netting with fasteners; laying a middle layer of moisture-retaining blankets and mixing in fertilizer; setting an upper layer of moisture-retaining blankets; determining planting points on the upper layer of moisture-retaining blankets, cutting incisions at the planting points, and placing the seedlings to be planted into the incisions; and maintaining the slope surface. In the above method and structure, the bottom layer of moisture-retaining blankets adheres closely to the original slope surface, playing a role in buffering, moisture retention, and preventing the germination of weeds in the lower layer; the middle layer of moisture-retaining blankets retains water and fertilizer; the upper layer of moisture-retaining blankets is in contact with the seedling root ball and exposed to the atmosphere, inhibiting upper layer weeds and reducing water evaporation. Through the incisions to accommodate the root ball, the seedling roots grow rapidly in the moist, fertile, and weed-free environment created by the moisture-retaining blankets, penetrating the fiber gaps of the bottom layer of moisture-retaining blankets and sinking into the deep layer of the original topsoil, achieving stable anchoring.

This invention relates to the field of agricultural technology, specifically to a water-saving and salt-reducing synergistic regulation method for intercropping salt-tolerant maize with halophytes, comprising the following steps: Step 1: Saline-alkali land classification and pretreatment; Step 2: Construction of a gradient intercropping system; Step 3: Dynamic irrigation and drainage and water and fertilizer regulation; Step 4: Rhizosphere improvement; The saline-alkali land classification of this invention is based on the total salt content and pH value of the topsoil layer (0-20cm) (moderate 0.3wt%-0.6wt%, severe >0.6wt%), rather than the original 0-60cm depth, which is closer to the actual salt damage range of the topsoil layer and provides a precise basis for the implementation of subsequent measures; The intercropping system enhances the ecological diversity of farmland and avoids the ecological monoculture caused by monoculture; The technical solution expands the arable land resources of moderate and severe saline-alkali land, while conforming to the direction of green governance, and providing a replicable guarantee solution for saline-alkali areas.

The present application belongs to the field of ecological restoration technology, and particularly relates to a kind of composite substrate soil and dry-hot valley slope restoration method. Wherein, the composite substrate soil includes 50%-70% of engineering slag, 10% of topsoil, 7.5%-35% of livestock and poultry manure, 7.5%-35% of microbial fertilizer, 4.5%-5% of biochar, 5% of crop straw and 0.3%-0.5% of polyvinylamide; in the composite substrate soil, the crop straw has abundant fiber and higher porosity, which can effectively increase the porosity of the composite substrate soil, reduce the bulk density of the composite substrate soil, make the composite substrate soil more loose and breathable, ensure the water permeability and water retention capacity of the composite substrate soil, and through the synergistic effect of microbial fertilizer, livestock and poultry manure, biochar and polyvinylamide, the mechanical composition of the composite substrate soil is optimized, the physicochemical properties of the engineering slag are comprehensively improved, so that the composite substrate soil can meet and be suitable for plant growth.

This invention relates to the field of soil permeability testing, specifically a method for testing surface soil moisture permeability in degraded forest land. The invention involves selecting several test points in the degraded forest land area to be measured, acquiring surface images of each test point before and after the installation of a dual-structure infiltration ring, identifying man-made crack anomalies and their predicted directions, and reselecting test points for infiltration ring installation based on the predicted crack directions. At intervals, negative pressure points are selected among all test points and negative pressure is applied. An initial infiltration measurement is performed at each test point using a Marshall bottle. A second infiltration measurement is performed after removing the topsoil at each test point. The steady-state infiltration rate obtained from the two infiltration measurements is combined to calculate the crust contribution rate. The preferential flow contribution rate is analyzed based on the second infiltration measurement results at negative and non-negative pressure points. Finally, the causes of forest land degradation are assessed by combining the crust contribution rate and the second steady-state infiltration rate at the negative pressure points, providing a scientific basis for restoration decisions.

This invention provides a method and application for the ecological restoration of rock mine slopes in ecologically fragile high-altitude areas, specifically relating to the field of ecological environment restoration technology. The ecological restoration method includes: leveling the rock mine slope in an ecologically fragile high-altitude area, then restoring the slope's topography by covering it with topsoil; constructing a masonry diamond-shaped grid structure for protection on the rock mine slope, planting native shrubs and grasses within the grid; installing an integrated water and fertilizer drip irrigation system on the rock mine slope; and finally, applying sprayed concrete or constructing slope supports to prevent soil erosion on the slope surface; wherein the altitude of the high-altitude area is >4000m. This ecological restoration method provides strong technical support for the ecological restoration of rock mine slopes in ecologically fragile high-altitude areas, and also provides important guarantees and references for ecological restoration work after mining in high-altitude regions.

This application discloses a method, apparatus, equipment, medium, and product for identifying and retroactively recognizing historical outflow of cultivated land, belonging to the field of land and resources survey and monitoring technology. The method includes: constructing a candidate base map of historical outflow of cultivated land based on multi-time-series land change survey vector data; generating a constraint layer based on multiple spatial constraint data; performing spatial intersection elimination based on the candidate base map of historical outflow of cultivated land and the constraint layer to obtain a candidate set after avoidance; judging the integrity of the topsoil based on the candidate set after avoidance and soil survey data to obtain a set of intact topsoil patches; identifying crop types in the set of intact topsoil patches based on multispectral remote sensing data to obtain a crop type identification result set; performing concentrated contiguous analysis on the patches in the crop type identification result set to obtain a contiguous optimization result set; and performing post-processing on the contiguous optimization result set to generate a cultivated land retroactive vector layer. The embodiments of this application can effectively improve the efficiency and accuracy of identifying and retroactively recognizing historical outflow of cultivated land.

This invention provides a comprehensive management method for coastal saline-alkali land, relating to the field of soil improvement technology. The method includes: soaking the topsoil of the coastal saline-alkali land in water to remove salt; tilling the topsoil after soaking; planting crops; and during the crop growth period, applying nitrogen fertilizer and compound conditioner based on real-time monitoring indicators of the topsoil, as well as irrigation; and applying green manure and incorporating it into the field after crop harvest. This invention solves the technical pain points of salt accumulation, organic matter deficiency, and extensive regulation in the improvement process of coastal saline-alkali land, achieving precise fertilization and irrigation, efficiently reducing salinity, and directionally improving soil fertility. It is suitable for large-scale improvement and agricultural utilization of similar saline-alkali land in coastal South China.

This application relates to an ecological restoration system and method suitable for high-altitude and cold environments, specifically in the field of environmental restoration systems. The system includes: leveling a surface to create a smooth surface on exposed surfaces in high-altitude and cold environments; constructing an acclimatization shed on one side of the leveled surface, where acclimatized plants are planted; laying a base mesh layer on the leveled surface, with multiple fixing devices on the base mesh layer to secure it to the leveled surface; spraying topsoil onto the base mesh layer to form a restoration substrate layer; pressing planting troughs into the surface of the restoration substrate layer and transplanting the acclimatized plants from the acclimatization shed into the planting troughs; covering the surface of the restoration substrate layer with a protective layer; installing miniature meteorological and soil moisture monitoring equipment on the restoration substrate layer, the miniature meteorological and soil moisture monitoring equipment having an alarm function; and also installing drip irrigation equipment on the restoration substrate layer. This application has the effect of optimizing the restoration effect of high-altitude and cold environment restoration work.

The application discloses a geological drilling machine drilling topsoil layer construction method, which adopts a dry drilling construction method combining dry drilling and wet drilling in the geological drilling machine rotary drilling construction; the geological drilling machine drilling topsoil layer construction method is suitable for strata including sedimentary soil layers and backfill soil layers; drilling construction is performed by submerging drilling tools in a drilling hole with cooling water; the cooling water can cool and lubricate the drilling tools; the drilling hole internal circulation is performed by mud pumps to extract cooling water; the method can avoid serious flushing of the hole wall by the flushing liquid, makes the hole wall more stable, reduces the hole collapse phenomenon, ensures the drilling engineering quality and use function, avoids the flushing liquid in circulation from washing the topsoil layer core, makes the core integrity good, and increases the core taking rate; there is no core loosening or loss phenomenon; the working time of the mud pump is reduced, the equipment diesel oil consumption or electric power loss is reduced, the drilling construction cost is saved, the construction process is clean and environmentally friendly, and good social and economic benefits are generated.

This utility model relates to the field of agricultural equipment technology and discloses an agricultural device for soil improvement, including a machine body. A connecting frame is fixedly connected to the bottom of the machine body, and rotating wheels are rotatably connected to the side wall of the connecting frame. An improvement component and a dust removal component are installed inside the machine body. The improvement component includes a deep loosening shovel, a first storage tank, and a second storage tank. The side walls of the first and second storage tanks are fixedly connected to the inside of the machine body. A crossbeam is fixedly connected to the side wall of the connecting frame, and a fixed cylinder is fixedly connected inside the crossbeam. The side wall of the deep loosening shovel is fixedly connected to the side wall of the fixed cylinder, and a delivery pipe is fixedly connected inside the second storage tank. In this utility model, by simultaneously delivering the soil conditioner to both the top and bottom layers, the conditioner is fully mixed with the soil, creating a fine and level topsoil layer for subsequent sowing, thus improving the mixing efficiency of the conditioner with both the top and bottom soil layers.

This invention discloses a soilless hydroseeding substrate and its application. The soilless hydroseeding substrate is composed of either Scheme A or Scheme B, or the substrate comprises two separately packaged components, namely Scheme A and Scheme B. Scheme A consists of the following components and their mass percentages: 5-10 parts decomposed corn stalks, 5-10 parts decomposed sugarcane bagasse, 3-6 parts rice husk charcoal, 20-30 parts crushed stone, 0.5-1 part binder, and 0.1-0.5 parts water-retaining agent. Scheme B consists of Scheme A with the addition of 2-3 parts seeds. The crushed stone has a particle size of 1-5 mm. This invention can solve the problems of poor soil quality and water and fertilizer retention capacity in rocky desertification areas, and the difficulties in soil sampling, high costs, and unstable soil layers encountered when using traditional topsoil methods for vegetation restoration.

This invention discloses a method for synergistic optimization of soil structure and fertility based on straw return to the field to promote decomposition, belonging to the field of soil optimization technology. A systematic technical system is constructed from the dimensions of in-situ straw decomposition and compost humification enhancement. Highly efficient decomposition-promoting microorganisms and humification promoters are screened through indoor cultivation experiments. The regulatory mechanism of decomposition promoters on the compost humification process is analyzed using humification kinetic models and structural equation models, forming a compost humification enhancement technology. Key parameters affecting in-situ straw decomposition are screened using the nylon mesh bag method. Multiple physical, chemical, and biological indicators of the soil are measured through years of field experiments. A comprehensive scoring model is constructed using principal component analysis, combined with multi-factor variance analysis and multiple comparisons, to screen the treatment combination with the highest contribution rate to the synergistic improvement of soil structure and fertility. Technical procedures are formulated and demonstrated. This achieves synergistic fertilization of the topsoil and sub-topsoil of degraded soils, with significant economic, ecological, and social benefits.

This invention belongs to the field of mine wasteland remediation technology, specifically disclosing a plant-microorganism synergistic method for mine wasteland remediation. The method includes the following steps: mixing organic waste, an alkaline amendment, and a first compound microbial agent with the topsoil of the mine wasteland, and conducting aerobic cultivation to obtain pretreated soil; tilling the soil, planting Miscanthus sinensis, and cultivating until the Miscanthus sinensis grows stably; planting ramie between the Miscanthus sinensis rows, spraying a second compound microbial agent on the soil surface between the rows, and harvesting the above-ground parts of the Miscanthus sinensis and ramie after 25-35 days to determine the metal accumulation; detecting the target metal content in the soil, and if the target is not reached, retaining the root system for multiple rounds of remediation. This method can effectively adsorb heavy metals in the soil, solving the problems of low remediation efficiency, long cycle, lack of resource consideration, and insufficient restoration of soil ecological function, providing an efficient, economical, and environmentally friendly solution for the sustainable ecological restoration of mine wastelands.

This invention discloses a wheat planting method based on high-flow, wide-spacing drip irrigation tape, belonging to the field of agricultural technology. By increasing the row spacing of the drip irrigation tape, setting a six-row, one-pipe layout, and calculating a high-flow-rate irrigation of 3L / h, this invention effectively reduces the workload of pipeline laying and recycling, lowers material input, labor costs, and the harmful effects of plastic pollution on farmland. Simultaneously, it achieves wide coverage by increasing the intensity of point source water supply. This avoids excessively high soil temperatures in the topsoil layer caused by traditional irrigation methods, creating a suitable temperature and humidity environment for the roots, delaying aging, and increasing yield. It solves the problems of high material input and labor costs, extremely narrow and deep underground wetlands, and excessively high soil temperatures in the main root layer of wheat caused by dense pipeline laying, emphasis on low-flow irrigation, and poor irrigation methods in existing technologies. It has the potential to be applied to the planting of various crops in arid regions.

This application provides a method and system for monitoring arable land quality based on hyperspectral remote sensing, relating to the technical field of arable land quality monitoring. The method includes: acquiring hyperspectral remote sensing image data of different soil types and measured values ​​of topsoil nutrients; generating background field data based on the measured topsoil nutrient values ​​using a Kriging interpolation algorithm; constructing an inversion model and generating training samples; training the inversion model using the training samples; inputting the hyperspectral remote sensing image data to be processed into the trained inversion model to obtain the inversion values ​​of topsoil nutrient indicators; constructing a minimum dataset by combining site and climate condition indicators; calculating the membership degree of each indicator and setting weights; and finally calculating the target soil fertility index using a weighted summation algorithm. This application can improve the accuracy of arable land quality monitoring.

This invention relates to the field of plant cultivation, and more particularly to a method for improving plant cultivation in saline-alkali land. The method comprises the following steps: excavating planting holes; laying a biodegradable physical isolation layer composed of humic acid-treated plant fibers and biomass adhesives, which has salt-regulating degradation properties; filling the root zone with a root zone improvement substrate composed of topsoil, well-rotted organic fertilizer, vermiculite, and pH-adaptive ammonium sulfate; planting salt-tolerant plant seedlings and watering with potassium humate-containing water for root establishment, using drip irrigation; applying organic fertilizer after one season of plant growth, and returning straw to the field after two seasons. This invention creates a low-salt environment in the root zone through the biodegradable isolation layer, combined with a precisely proportioned improvement substrate, effectively solving the triple stress problems of salt, alkali, and drought in the early stages of seedling transplanting, significantly improving survival rate and improvement efficiency.

The application discloses a topsoil stratum modeling method based on MicroStation attribute identification and relates to the cross field of geological survey and computer-aided design. The application creates a three-dimensional model of a borehole in MicroStation, projects an orifice coordinate to a plane, adopts a BowyerWatson algorithm to perform Delaunay triangulation, and constructs a borehole profile triangular net. After manual adjustment, the strata are automatically connected according to corresponding rules, and the triangular area space is closed. Then, the stratum profile is generated into a geobody model along the elevation, the lens structure is subjected to shearing treatment, and finally, a complete three-dimensional topsoil geological model is formed. The application realizes three-dimensional visual expression of the topsoil stratum, can be arbitrarily cut and viewed, and only needs to be partially reconstructed when new survey data is added, so that the modeling workload is greatly reduced, the accuracy and updating efficiency of the geological model are improved, and an intuitive and reliable geological basis is provided for geotechnical engineering design and construction.

This application belongs to the field of mine ecological restoration and soil improvement technology, and particularly relates to compound microbial agents, soil conditioners, preparation methods, and applications. This application provides a compound microbial agent comprising: Bacillus subtilis, Trichoderma reesei, Trichoderma harzianum, Bacillus megaterium, and Bacillus mucilaginosus. This application also provides a soil conditioner comprising lignite and the compound microbial agent as raw materials, and its preparation method. This application further provides the application of the above-mentioned compound microbial agent or the above-mentioned soil conditioner or the above-mentioned soil conditioner preparation method in in-situ improvement of topsoil in black soil mining areas. In this application, the compound microbial agent decomposes the organic matter of lignite, promoting its conversion to humic acid, forming a synergistic effect with the indigenous microbial community of the soil. Utilizing the suitable environmental conditions of autumn soil temperature and humidity for microbial proliferation, the activation process is completed simultaneously with autumn land preparation, improving the efficiency of soil improvement. Tests have shown that applying the soil conditioner to the topsoil of the mining area to be improved can effectively improve soil conditions.

This invention discloses a method for constructing a functional zone of subsurface organic matter in sloping farmland based on manure-inducing straw return, relating to the fields of soil improvement and water and soil conservation. Addressing the core pain point of topsoil stripping and erosion in sloping farmland, this invention utilizes an engineered scheme of manure-inducing straw return, which can increase the straw degradation rate by 30%–60% compared to conventional straw return techniques, significantly shortening the decomposition cycle. Within a single crop growing season, it can increase the organic matter content of the subsurface soil in sloping farmland by 20%–50%, simultaneously optimizing soil aggregate structure, enhancing soil water and fertilizer retention and erosion resistance, and effectively mitigating the risks of nitrogen competition and yield reduction during the seedling stage caused by straw return. This scheme can restore corn yield to the level of unstripped plots under erosion conditions with 20cm of topsoil stripping, achieving synergistic promotion of soil remediation and stable crop yield.

This invention discloses a rapid remediation isolation membrane and permeable blind pipe laying equipment and method for constructing topsoil-subsoil salt-cutting plots, relating to the field of saline-alkali land improvement. It pioneers a non-excavation in-situ membrane laying technology, integrating modules such as a disc plow (2), a serrated separating plow (3), a soil conveying system (4), an HDPE geomembrane laying mechanism (5), and a permeable blind pipe laying device (6). The disc plow (2) cuts and shapes the field ridges (9), and the serrated separating plow (3) separates the topsoil layer (10) and subsoil layer (11). An HDPE geomembrane (12) is simultaneously laid and vertically attached to the ridges to form a three-dimensional barrel-shaped salt-cutting structure. Permeable blind pipes (13) are laid simultaneously, and soil amendments are added during backfilling. This invention completely blocks saltwater migration, solving the problems of recurring and costly traditional treatment methods, creating conditions for residual salt management and biological improvement, and is suitable for rapid remediation and topsoil reconstruction of saline-alkali land.

A method for measuring the bulk density of topsoil based on the sound wave penetration characteristics belongs to the field of intelligent agricultural sensing technology. In the sound wave penetration characteristic acquisition system of this invention, a digital power amplifier board is electrically connected to a subwoofer, a DC power supply, and a computer terminal; a data acquisition card is electrically connected to a microphone and the computer terminal; and a robotic arm is electrically connected to the DC power supply and the computer terminal. The robotic arm, through five servo motors in coordinated control, achieves automatic grasping, precise positioning, and vertical insertion of the ring cutter tube, ensuring consistent sample placement. The computer terminal is equipped with a soil bulk density measurement model based on an adaptive mutant particle swarm optimization variational mode decomposition model and an adaptive mutant particle swarm optimization BP neural network. This system can automatically acquire real-time soil penetration sound waves and realize soil bulk density inversion based on sound wave penetration characteristics. The soil bulk density measurement model of this invention has high timeliness and high accuracy.

This invention belongs to the field of ecological environment restoration technology and discloses a method for ecological restoration of grassland vegetation in photovoltaic power station areas in Gobi deserts. The method uses planted semi-shrubs as the core framework, employing micro-topography modification and seedling technology to effectively stabilize and improve gravelly soil, enhancing the stability of the topsoil structure. A specific ratio of mixed grass seeds is sown within a 15-30cm radius around the planted plants, forming a semi-shrub-herbaceous multi-layered structure. The complementary functions and vertical stratification of these two types of grasses promote stable community succession. Furthermore, the application of a specific ratio of organic fertilizer and water-retaining agent improves the soil at the bottom of the planting pit. This method not only avoids the waste associated with large-scale seed sowing but also significantly improves seedling emergence and survival rates, rapidly increasing vegetation coverage, reducing maintenance frequency and costs, and has broad application prospects in the ecological restoration of gravelly land.

This application relates to the field of degraded soil improvement and remediation technology, and particularly to a desert soil salt-barrier and water-retaining material, its preparation method, and a method for salt-barrier and water-retaining using the desert soil salt-barrier and water-retaining material. The material comprises coal gangue and industrial gypsum solid waste; the coal gangue includes organic matter and clay minerals, with the organic matter comprising less than 30% of the coal gangue mass and the clay minerals comprising more than 50% of the coal gangue mass; the industrial gypsum solid waste is hemihydrate gypsum obtained by drying and dehydrating desulfurized gypsum, with a purity of not less than 90%, and the mass ratio of coal gangue to hemihydrate gypsum is (80~100):(10~20); the pH value of the desert soil salt-barrier and water-retaining material is weakly acidic to neutral. Therefore, the raw materials for this material can be sourced locally, resulting in low production costs. Furthermore, this material not only retains water but also effectively inhibits topsoil alkali return, enhancing the soil's buffering capacity against salinity and alkali.

The present application relates to the field of farmland quality improvement technology, and particularly relates to a farmland rapid cultivation integrated method based on plough layer reconstruction and nutrient reservoir capacity expansion, comprising the following steps: S100: constructing an inverted trapezoidal trench: cutting the plough layer of farmland to construct an inverted trapezoidal trench with a wide upper part and a narrow lower part; S200: injecting a precursor mixture: synchronously injecting a precursor mixture containing solid skeleton particles and liquid cementing agent into the trench while constructing the inverted trapezoidal trench; S300: in-situ solidification forming: causing the precursor mixture to have an in-situ solidification reaction in the inverted trapezoidal trench to generate a porous support column; S400: topsoil backfilling: backfilling topsoil to cover the porous support column, and the present application effectively solves the problems of quick soil backfilling and easy loss of filling materials in the existing deep loosening improvement technology through the coupling of underground inverted trapezoidal mechanical unloading space and in-situ chemical cross-linking forming technology.