585 results about "Soil structure" patented technology

The invention relates to a geotechnical engineering geological investigation system and an investigation method thereof, which are used for solving the problems of drilling redundancy, repeated model correction and long period caused by traditional uniform hole distribution. The system comprises a geophysical exploration module, a rock-soil body structure feature extraction module, a geological abnormal area identification module, a survey detection point dynamic optimization module, a drilling sampling analysis module and a geotechnical engineering stability evaluation module. Earth material exploration is carried out on representative points to obtain a comprehensive geophysical prospecting data set, inversion is carried out according to the comprehensive geophysical prospecting data set to obtain a three-dimensional rock-soil structure, an abnormal area is recognized, accordingly, the drilling layout is dynamically optimized, and stability evaluation is completed at a time after a small amount of directional drilling sampling is carried out. By adopting the system, a high-precision geologic model and a stable evaluation result can be obtained with fewer drilled holes in a preliminary exploration stage, the cost is remarkably reduced, and the period is shortened.

The invention discloses a Xinanjiang model correction method based on CLDAS soil humidity assimilation. Soil moisture constants such as field capacity FC and wilting point WP are calculated; corresponding and mapping of a CLDAS observation layer and a model three-layer soil structure (WU, WL and WD) are realized through layered interpolation. For the problem of missing measurement of the CLDAS, a reconstruction model based on space-time Transform is introduced for filling, pixel-level uncertainty is output, and an EnKF observation covariance matrix is constructed based on the pixel-level uncertainty. And then dynamically updating the three-layer soil water content state of the model by using ensemble Kalman filtering, thereby reducing the influence of soil humidity initial estimation and simulation deviation on flood simulation. The flood simulation and real-time forecasting precision can be effectively improved, the method has the advantages of being stable in data source, clear in physical significance and high in applicability, and a new technical approach is provided for state initialization and digital hydrology research of a distributed hydrological model.

The invention relates to the technical field of soil cadmium remediation, in particular to a soil Cd recognition and remediation method based on mulberry root exudates and microorganisms. According to the method, spatial microscopic image frames of rhizosphere microflora are divided through a community structure, community node increment updating calculation of adjacent time sequences is executed, the transition recombination frequency of the rhizosphere microflora is obtained, and the transition color of the actual concentration content of root exudates is rendered based on a metal pollution level system and the transition recombination frequency. Generating a stress level heat model of the soil cadmium gradient in the target restoration area; and according to the stress level popularity model, carrying out popularity color analysis and identification on the soil cadmium pollution of the target restoration area, and generating a global stress identification result of the soil cadmium. According to the method, rapid identification of cadmium pollution enrichment can be realized by utilizing the synergistic response between mulberry root exudates and rhizosphere microorganisms, and a repair regulation and control plan is made, so that the cadmium pollution degree is reduced, the soil structure and fertility are optimized, and a safer and healthier environment is provided for plant growth.

The invention discloses a humic acid type biological organic fertilizer and a preparation method thereof, and belongs to the technical field of agricultural biologication.The fertilizer is prepared from weathered coal humic acid raw powder, seaweed processing residues and insect manure as main raw materials. The soil conditioner is prepared by adding a compound microbial agent, a mineral synergist, an enzyme preparation, a coating material, a soil structure regulator, a signal molecule inducer, a trace rare earth element additive, a stabilizer and the like in a specific ratio and adopting a two-step fermentation process. The fertilizer disclosed by the invention has remarkable functions of soil improvement, nutrient slow release, microbial community regulation and control, crop stress resistance enhancement and the like, remarkably improves the yield and quality of crops, reduces the use of chemical fertilizers, promotes agricultural sustainable development, and has remarkable economic and ecological benefits.

The invention belongs to the technical field of soil improvement, and relates to a soil conditioner for improving sandy soil structure and a preparation method thereof, and the preparation method specifically comprises the following steps: preparing activated humic acid, preparing a nano mineral material, preparing modified biochar, constructing biochar composite gel, and preparing konjac glucomannan-sodium alginate water-retaining colloid. Mixing the biochar composite gel, the water-retaining colloid and the slow-release fertilizer, granulating and the like. Through a ternary synergistic system of the biochar composite gel, the water-retaining colloid and the slow-release fertilizer, the functional singleness is broken through, the structure-water retention-fertilizer supply integration is realized, and the problems that an existing sandy soil conditioner is single in function, poor in component synergism, weak in environmental adaptability, insufficient in long-term effect and the like are solved.

The invention relates to the technical field of water demand prediction, in particular to a crop water demand prediction method and system based on the agricultural Internet of Things, and is applied to accurate moisture management in complex soil structures such as terraces. And in combination with the dynamic weight of interlayer moisture migration, the moisture absorption matrix is updated in real time. Through time sequence sliding and cosine similarity calculation, a moisture retention time matrix is dynamically corrected, and accurate distribution of soil moisture is ensured. A graph theory algorithm is introduced to construct a directed graph model of a water flow path, an interference matrix is generated in combination with binary masks, matching of water absorption and water retention time is optimized, and the irrigation efficiency and the water resource utilization rate are improved. The irrigation strategy can be dynamically adjusted according to the moisture state between the soil layers, moisture waste is avoided, and the accuracy of crop growth moisture supply is improved.

The invention discloses a black land plough layer soil construction method based on a bio-organic fertilizer, and aims to solve the problems of black land soil degradation and fertility decline. The functional bio-organic fertilizer containing nitrogen-fixing bacteria, phosphate solubilizing bacteria and potassium solubilizing bacteria is prepared, and scientific and accurate fertilization is realized by combining soil physicochemical property determination and mathematical model optimization. The method specifically comprises the following steps: measuring the nutrient content and pH value of soil and fertilizer, constructing a mathematical model to obtain optimized application parameters, and continuously improving the soil fertility and productivity by dynamically adjusting the fertilizer application amount and evaluating the soil fertility, thereby reducing the dependence on chemical fertilizer, improving the soil structure and improving the crop yield. The method has the characteristics of environmental friendliness, accuracy, high efficiency and high sustainability.

The invention provides a composition and application thereof in ecological restoration, and the composition is granular and is prepared from glume of corncob, polyvinyl alcohol, sodium bentonite and water. The composition can keep soil moisture and improve the soil structure, the raw materials are biomass materials, water retention is achieved, food sources can be provided for microorganisms and soil animals in soil, microcirculation of moisture and soil organisms is formed around the composition, the soil organisms can further increase nutrients in the soil, and the soil quality is improved. Soil carbon-solid continuous increase of soil organic matters and aggregates is realized, and the method has great significance on ecological restoration.

The invention relates to the technical field of agriculture, and discloses a synergistic technology for repairing soil and promoting plant stem cells by using modified amino active groups. Comprising the following steps: modifying an amino acid compound, namely modifying active groups in amino acid and fulvic acid, so that the active groups have a synergistic effect with cellulase, hemicellulase, urease, phosphatase, chitinase, beta-glucanase, superoxide dismutase, peroxidase and catalase; through the strong chelation of the modified amino active groups and heavy metal ions in soil, the bio-availability and mobility of heavy metals can be effectively reduced, for example, the chelation removal rate of cadmium, lead and other heavy metals can reach 40% or above, the heavy metal contaminated soil is repaired, the soil structure is improved, the content of organic matters in the soil is increased, and the pH value of the soil is adjusted; the acidified or alkalized soil is gradually restored to a pH range suitable for plant growth, and the water and fertilizer retention capability of the soil is improved.

The invention discloses an organic-inorganic composite acid soil conditioner with synergism of nitrogen element synergism and soil expansion and application, and belongs to the technical field of soil conditioners. The modifier prepared by the invention is prepared from an acid neutralizer, a structure modifier, a capacity expansion synergist and a nitrogen synergist and is prepared from the following components in parts by weight: 18 to 22 parts of dolomite powder, 6 to 10 parts of lime powder, 20 to 24 parts of oyster shell powder, 8 to 12 parts of humic acid, 4 to 8 parts of sargassum, 1 to 3 parts of sodium alginate, 7 to 11 parts of charcoal, 5 to 9 parts of sepiolite powder, 3 to 7 parts of bentonite, 6 to 10 parts of poly gamma-calcium glutamate and 3 to 7 parts of chitosan. The soil conditioner can regulate and control the soil acidity, buffer the soil capacity, improve the soil structure and balance soil nutrients, solves the problems of high re-acidification rate, soil hardening and nutrient imbalance of a traditional lime conditioner, and is suitable for pHlt; and 6.5, repairing the acid soil.

The invention relates to the technical field of intelligent management service, in particular to a soil structure intelligent improvement system, which comprises an intelligent service management platform used for processing data related to soil improvement and managing and controlling other modules; the soil data acquisition module is used for acquiring soil data; the intelligent service management platform comprises an improved decision analysis module; the data analysis module is used for performing data analysis based on soil data to generate a dynamic soil improvement operation plan and sending a control instruction; the control module is used for receiving a control instruction sent by the intelligent service management platform according to the dynamic soil improvement operation plan for soil improvement; the feedback module is used for receiving and confirming the execution state and result information of the resource scheduling module and feeding back to the intelligent service management platform; the monitoring module is used for monitoring video images of the land parcels in real time, and refined and intelligent management of soil improvement is achieved by constructing a closed loop of multi-source sensing, data fusion, intelligent decision making, accurate execution and dynamic feedback.

According to the indigenous plant adaptability screening test method simulating the environmental stress condition, the transparent incubator is combined with real-time monitoring equipment such as the high-resolution miniature camera array and the optical fiber sensor, complex laboratory equipment is replaced, and the root system observation problem is solved. The environmental stress condition of a target habitat is accurately simulated, the environmental characteristics of drought, depletion, special soil structure and the like of the high and steep slope are accurately restored by adopting layered matrix and dynamic stress intervention, a systematic evaluation system is established by combining multi-index quantification and a similar analytic hierarchy process, the subjectivity of artificial experience judgment is avoided, and the evaluation accuracy of the high and steep slope is improved. And the scientificity and engineering applicability of indigenous plant screening are remarkably improved.

The invention relates to the technical field of urban ecological engineering, in particular to a parking lot authigenic plant planting method based on carbon immobilization. The invention provides a parking lot authigenic plant planting method based on carbon immobilization, which is characterized in that a three-stage ecological rotation mechanism is introduced into vegetation construction according to the sequence of a pioneer plant period, a green manure turning and pressing soil returning period and an authigenic plant community succession period to form a parking lot authigenic plant pool, and the parking lot authigenic plant planting based on carbon immobilization is realized. The invention aims to improve the greening ecological benefit and carbon sink capacity of the parking lot by optimizing the soil structure and adopting the crop rotation technology, provides a plant pool structure which adapts to the environment of the parking lot, has high-carbon solid storage capacity and can realize autonomous ecological circulation, and improves the soil health, inhibits diseases and prolongs the plant coverage period through the crop rotation technology. The problems that traditional parking lot greening depends on manual intervention, and the carbon sink benefit is low are solved, and continuous carbon sink under the low maintenance cost is achieved.

The invention provides a compound fertilizer for improving acid soil as well as a preparation method and application thereof, and belongs to the technical field of fertilizer preparation. The compound fertilizer comprises the following components in percentage by weight: 40-55% of poultry manure biochar, 20-35% of a medium element compound, 10-20% of a compound conditioner and 5-10% of a binder. The compound fertilizer can quickly and enduringly neutralize soil acidity, effectively passivate aluminum and manganese ion poison, accurately supplement calcium, magnesium, sulfur and other salt-based nutrients, improve the soil structure and fertilizer retention ability, and overcome the oneness and short-term effect of a traditional lime improvement method. The perfect combination of agricultural waste recycling and acid soil comprehensive treatment is realized, and the fertilizer is an efficient, environment-friendly and multifunctional soil improvement type fertilizer.

The utility model discloses a combined type top-down pipe jacking working well which comprises a well chamber, a plurality of stabilizing piles and a plurality of horizontally-arranged concrete well rings, and the well chamber is vertically dug. The stabilizing piles are vertically inserted into the well chamber, the side wall of each stabilizing pile is attached to the inner wall of the well chamber, and the side walls of the adjacent stabilizing piles are connected in a sealed mode so that all the stabilizing piles can define a stabilizing frame. All the concrete walling cribs are sequentially stacked in the well chamber from top to bottom, and the outer wall of each concrete walling crib abuts against the inner wall of the stabilizing frame. The problems that a water stopping and soil fixing structure of a reverse well arranged in a soft soil area or a high underground water level area is complex, cost is high, and the water stopping and soil fixing effect is not ideal can be solved.

The invention discloses a calcium-enriched rice straw biochar core-shell particle soil conditioner, which belongs to the technical field of soil improvement and farmland water environment governance, and comprises the following components: a calcium-enriched rice straw biochar core, desulfurized gypsum, a binder and a functional auxiliary agent, the binder is selected from one or more of starch, lignosulfonate, sodium carboxymethyl cellulose and sodium alginate; the functional additive is selected from one or more of humic acid, trace element fertilizer and organic fertilizer; through the comprehensive design on the material structure, the Ca < 2 + > slow release mechanism and the application system, calcium and sodium replacement and soil salinity and alkalinity reduction, flocculation and sedimentation of soil colloid in an alkaline environment, blocking and weakening of a soil-water interface colloid pollution channel and continuous improvement of the soil structure and fertility are synergistically realized.

The application discloses a soil deep loosening simulation method based on DEM-FEM bidirectional coupling. The method comprises the following steps: establishing a soil discrete element model and a deep loosening tool finite element model; using the discrete element DEM simulation to analyze the influence law of soil characteristic parameters and deep loosening tool motion parameters on soil deep loosening effect and deep loosening tool working resistance; changing the soil characteristic parameters and deep loosening tool motion parameters, and calculating the information such as soil deep loosening particle mixing degree, deep loosening tool working efficiency and working resistance under different variables; analyzing the influence law of the working resistance obtained from the DEM on the deep loosening tool structure through the finite element FEM analysis, changing the soil structure parameters and deep loosening tool structure parameters, and counting the statics and dynamics analysis results under different variables; simulating through the DEM-FEM bidirectional coupling, analyzing the soil deep loosening mechanism of the deep loosening tool, and obtaining the parameter and structure optimization results. Compared with the prior art, the application can effectively reduce resistance and consumption, and improve working efficiency.

The invention discloses copper tailings-based ecological soil and an adopted conjugate improvement method, the copper tailings-based ecological soil comprises lime modified copper tailings and a tailings modifier, and the tailings modifier comprises a soil structure building agent, clay and water; the soil structure building agent comprises a composite high polymer material, an organic fertilizer and an anti-reflection fertilizer-retaining mineral material; the composite high polymer material contains xanthan gum and polyacrylamide, and the organic fertilizer contains humic acid. According to the method, the copper tailings serve as matrix soil, a good ecological environment suitable for plant growth is built by conducting in-situ modification on the tailings, the problems that soil is difficult to take through a soil dressing method and the like are effectively solved, and the ecological management time cost and the economic cost are saved; besides, the improved copper tailings are expected to achieve effective consideration of the characteristics of water retention / water permeability, agglomeration / loosening, air permeability / fertilizer retention and the like, high-added-value resource utilization of the copper tailings is achieved, a large-area copper tailings covering area is improved to form a good carbon sink area, and important economic and environmental benefits are achieved.

The utility model relates to the technical field of water conservancy projects, in particular to a water conservancy project slope protection structure with an anti-scouring effect, which comprises a footstone layer and a slope protection main body, the slope protection main body is fixedly arranged on the left side of the footstone layer, and a plurality of ecological slope protection units are fixedly arranged on the slope surface of the slope protection main body. The multiple ecological slope protection units are arranged in rows, a water guide frame is fixedly arranged between every two rows of ecological slope protection units, the water guide frames are fixedly arranged on the slope protection main body, each ecological slope protection unit comprises a concrete mounting frame, vegetation bags are assembled in the concrete mounting frames, the vegetation bags are filled with soil, and the water guide frames are fixedly arranged on the slope protection main body. Grass seeds used for improving the soil quality are wrapped in the soil, and a protective net is fixedly arranged on the outer wall of the side, close to the dam, of the concrete mounting frame through bolts. According to the slope protection structure, multiple anti-scouring slope protection modes are combined together, the physical protection effect of the slope protection structure is improved, the soil structure is improved, and ecological restoration is achieved.

The present application relates to an environment-responsive intelligent controlled-release organic fertilizer and a preparation method thereof, and belongs to the technical field of composite organic fertilizer. In order to solve the problem that the traditional soil improvement method cannot simultaneously improve the efficiency of phosphorus supply and the soil, the present application provides a preparation method of an environment-responsive intelligent controlled-release organic fertilizer. The method comprises the following steps: crushing and drying agricultural and forestry waste, and then placing the waste in a calcium source compound solution to complete preloading; drying and grinding to obtain a preloaded sample; pyrolyzing the preloaded sample in an inert atmosphere to obtain calcium-modified biochar; mixing the calcium-modified biochar with a phosphorus-containing solution to perform adsorption, thereby obtaining phosphorus-loaded biochar; and mixing the phosphorus-loaded biochar with peat and a binder, and then granulating and forming to obtain the organic fertilizer. The organic fertilizer has the environment-responsive characteristic, can adapt to the growth of crops in a three-stage phosphorus release mode, can reduce phosphorus fixation, can improve the soil structure, can stabilize the soil pH, and can improve the differentiation of the micro-niche ecological niche of the soil.

The invention relates to the technical field of slope supporting construction of constructional engineering, and particularly discloses a redundant and safe reinforced soil structure and a construction method. Reinforced soil is of a multi-step structure and is constructed on a weathered rock foundation; the reinforced soil sequentially comprises a plain concrete foundation, multiple layers of integral steel-plastic geogrids, a graded broken stone drainage layer, a clay water-resisting layer, a waterproof geomembrane, a concrete sealing bottom and plain filling soil from bottom to top, and reinforced concrete panels are poured on the outer sides of the integral steel-plastic geogrids. A reinforced concrete foundation is arranged at the bottom of the reinforced concrete face plate, a cement soil cushion layer is laid at the bottom of the reinforced concrete face plate, drainage holes and pre-embedded steel tie bars are arranged in the reinforced concrete face plate, the pre-embedded steel tie bars and the whole steel-plastic geogrids are bundled up, and a gravel inverted filter bag is arranged in each layer of steel-plastic geogrids. The clay water-resisting layer and the gravel drainage layer are laid to achieve redundant safe water prevention and drainage, the construction period is controllable, and the manufacturing cost is relatively low.

The utility model discloses a kind of for simulating root litter in situ sustained input device and its application, through the design of the soil column with stainless steel handle, 1 μm aperture nylon net, the PVC pipe with hole in bottom and multi-generation root litter in situ sustained input simulation system, the dynamic simulation of root litter sustained input process under soil profile scale is realized.The device solves the limitation of traditional decomposition experiment, can dynamically add root litter without destroying soil structure, while effectively blocking exogenous interference, ensuring the accuracy and consistency of experiment.The utility model provides key technical platform for studying the influence of root litter in situ sustained input on soil carbon stability, and is suitable for ecology, carbon cycle research and ecological system management and other fields.

The invention relates to the technical field of grape planting, and particularly discloses an intelligent soil loosening device for improving a grape planting soil structure, the intelligent soil loosening device comprises a mounting shell, the bottom of the mounting shell is fixedly connected with multiple groups of universal wheels, and the universal wheels are uniformly distributed at the bottom of the mounting shell; a first connecting support is fixedly connected to the top of the mounting shell, a handle is fixedly connected to one side of the first connecting support, the part, located on one side of the first connecting support, of the top of the mounting shell penetrates through and is fixedly connected with a deep ploughing device, and a connecting groove is formed in the part, located on one side of the deep ploughing device, of the side face of the mounting shell. A first water pump is fixedly connected to the part, located on one side of the deep ploughing device, of the top of the mounting shell, the intelligent soil loosening device for improving the grape planting soil structure solves the problem that soil turning operation cannot be conducted on deep land, meanwhile, pesticide can be sprayed into the soil while soil turning is conducted, the soil turning efficiency is improved, and the pesticide and the soil are evenly mixed.

The application discloses a kind of dry lake basin ecological comprehensive repair and intelligent monitoring method, the dry lake basin ecological comprehensive repair method, including by the way such as the soil transplanting of native plant in dry lake basin, realize locking edge sand control in dry lake basin inside;By planting local plant in the circumferential planting of dry lake basin edge, form sand material containment plant strip;By the way such as sowing psammophyte on the quicksand of dry lake basin periphery, to fix ground quicksand;And, by the way such as planting sand-fixing arbor and shrub in the upwind area of dry lake basin periphery and covering sand-fixing net, construct plant sand-fixing grid.The application can significantly improve the wind prevention and sand fixation efficiency of the surrounding area of dry lake basin, effectively reduce the frequency of wind-sand disaster, provide a solid guarantee for regional safety, while effectively promote the optimization of soil structure and the natural recovery of vegetation, not only enhance the water and fertilizer conservation capacity of soil, but also significantly improve the service function of regional ecosystem, such as water conservation, climate regulation and the like.

The invention discloses a tree species screening method for heavy metal lead contaminated soil remediation, and relates to the technical field of heavy metal lead contaminated ecological management. Common greening tree species such as cinnamomum camphora, willow, gingko, koelreuteria paniculata, photinia serrulata and osmanthus fragrans are selected, leaf and rhizosphere soil are collected in a point distribution mode, and the content of heavy metal Pb in a sample is measured; the heavy metal Pb content distribution characteristics of different tree species are quantified, the heavy metal Pb enrichment capacity difference of the greening tree species is explored, the heavy metal Pb enrichment and transfer efficiency of the greening tree species is comprehensively evaluated, and the greening tree species with the best heavy metal Pb purification effect is screened out. The method is a phytoremediation technology which has the advantages of being economical, simple, convenient, high in recognition degree, long in life cycle, free of damage to the soil structure, not prone to causing secondary pollution and the like.

The invention relates to the technical field of soil ecology, and particularly discloses a method for quantifying the density of topsoil habitat soil arthropods based on a trap method.The method comprises the following steps that S1, trap method sampling is conducted, specifically, when a soil arthropod sample is collected, a soil auger is used for digging out a trap, a trap cup containing preserving fluid is placed in the trap for soil animal investigation, and the soil arthropod sample is collected; the time duration is one week which is used most widely in the literature; s2, sampling by a digging method: when a soil arthropod sample is collected, placing a prepared sampling frame of one square meter on sampling soil, digging and collecting soil animals with the depth of 10cm in the sampling frame, picking large arthropods by using a hand picking method, and separating medium soil animals such as springtails, mites and insects by using a dry funnel method. According to the method for quantifying the density of the surface soil habitat soil arthropods based on the trap method, the actual soil excavation area can be reduced to the maximum extent, the damage to the soil structure of a sampling field is reduced, and the possibility is provided for long-term experiments.

The invention discloses a deep soil sampling device, and belongs to the technical field of soil sampling, the deep soil sampling device comprises a main cylinder, a bottom cylinder, a petal-type soil drilling cone, a sampling cylinder, a limiting connection assembly, a driving screw rod and a driving positioning member, a plurality of mounting slideways are arranged on the side wall of the bottom cylinder, elastic reset members are arranged on the mounting slideways, the petal-type soil drilling cone comprises a plurality of petal-type cone sheets, and the petal-type cone sheets are arranged on the bottom cylinder. The petal-type conical piece is movably connected with the elastic reset piece through a rigid connecting piece, fixing columns are symmetrically arranged on the outer edge of a top plate at the upper end of the sampling barrel along the diameter line, locking openings are formed in the fixing columns, the limiting connecting assembly comprises a quick-release locking piece matched with the locking openings, the driving screw rod is rotationally connected with the limiting disc, and the driving positioning piece comprises a semi-ring piece. Threaded teeth are arranged on the inner side walls of the semi-ring pieces, and the two semi-ring pieces form a positioning thread sleeve matched with the driving screw. The soil sampling device has the beneficial effects that soil sampling at different depths can be efficiently and accurately completed without repeated drilling, the structural integrity of the sampled soil is guaranteed, and the characteristics of the soil at different depths are truly reflected.

The invention relates to the technical field of geological monitoring, in particular to a geological disaster risk area detection method, system and device and a medium. The method comprises the following steps: firstly, collecting topographic data of a survey area to establish a digital topographic model, and generating an optimal survey line arrangement scheme; then high-density electrical method measurement is carried out along the measuring line, and a low-resistance abnormal area is determined through abnormal value analysis; geological radar detection is carried out, and a soil body structure weak zone is identified according to electromagnetic wave reflection signal distribution characteristics; counting the spatial coincidence degree of the two types of anomalies, and judging the region with the relatively high coincidence degree as a high-risk region; and finally, generating a risk distribution diagram in combination with a preset risk assessment model. Through fusion analysis of the multi-source detection data, the limitation of single physical field detection is avoided, and the reliability of risk area identification is improved.

The utility model belongs to the technical field of saline-alkali soil planting, and particularly relates to a before-winter no-tillage oilseed rape ditching seeder which comprises a vehicle body, a rack and a seed box arranged on the rack, a seeder is arranged below the rack, and the input end of the seeder is connected with the seed box through a seed falling pipe. A ditching wheel is hinged to the position, located at the front end of the seeder, of the lower portion of the rack, the ditching wheel has the degree of freedom of rotating in the advancing direction of the vehicle body, and the ditching wheel and the seeder are located in the same vertical plane and are parallel to the advancing direction of the vehicle body. According to the utility model, the ditching wheel is additionally arranged on the rack, and the ditching wheel and the seeder are arranged front and back along the advancing direction of the vehicle body, so that rapeseeds are accurately planted into soil without large-area ploughing, the damage to the soil structure is reduced, the soil moisture is favorably kept, and the existing soil moisture is fully utilized to ensure the germination and emergence of the rapeseeds; the problem that rape cannot be sown in time after soil moisture loss caused by soil ploughing is effectively solved.

The utility model discloses a small turning plough with a leveling function, and belongs to the technical field of small turning ploughs. Comprising a rack, a soil crushing assembly, a leveling assembly and a plowing assembly are arranged below the rack, the leveling assembly is located between the soil crushing assembly and the plowing assembly, the plowing assembly comprises a third mounting frame, a plowing shaft is arranged in the third mounting frame, and the two ends of the plowing shaft are connected with the third mounting frame through bearings; coulters are arranged on the outer wall of the plowing shaft and are uniformly distributed in the circumferential direction of the plowing shaft in a herringbone shape. According to the small turning plough with the leveling function, by arranging the turning assembly and the herringbone coulter, bidirectional soil turning and loosening and soil cutting and turning can be achieved, so that the soil structure is effectively broken, the soil hardening problem can be avoided, the air permeability and drainage performance of soil are improved, the rotation direction of the turning shaft interacts with the soil structure, and the leveling effect is improved. Therefore, the loosening effect of soil is enhanced, and the tillage depth and quality are improved.