54 results about "Black earth" patented technology

The invention belongs to fruit tree cultivation, in particular to a method for the non-polluted cultivation of amur ampelopsis stems. The method concretely comprises the steps of field selection, planting system selection, garden building, soil management, fertilizer application, irrigation, pruning, disease control, harvest, winter protection, winter protection removal and other technical measures, wherein a field far away from pollution sources is selected; a planting system of single-arm trellis is selected; the soil management is to select sandy loam or sandy black earth; the fertilizers application is to mainly apply organic fertilizers; generally, the irrigation is unnecessary when the natural rain satisfies demands for growth; the pruning is performed in summer and winter with proper inflorescence scatter; the disease control focuses on prevention; the harvest is carried out late duly; and the winter protection and the winter protection removal are to cover 10 to 15 centimeters of soil in grape valleys after grape leaves fall off in the same year of field planting and remove the soil after the tomb-sweeping day in the following year. Through the above measures, the method ensures that the amur ampelopsis stems pass winter safely and give considerable yield.

The invention provides a phosphorus dissolvable penicillium oxalicum P8, which has the function of dissolving various kinds of indissolvable phosphorus in soil, is suitable for red soil in the South,black soil, drab soil and moisture soil in the North and other types of soil, and has various functions of improving the crop yield, activating the indissolvable phosphorus in the soil, preventing thesoil chemical fixation of phosphorus fertilizers and improving the utilization efficiency of the phosphorus fertilizers.

A backing block is designed based on welding metallurgy characteristics of CO2 vertical electrogas automatic welding and demands of CO2 vertical electrogas automatic one-side welding on performances of backings. The backing comprises one or a plurality of backing blocks, and the backing blocks comprise raw material components of alumina, quartz, talcum, feldspar, porcelain clay, Suzhou black earth, white mud and titanium dioxide, wherein the weight ratio of each raw material component is: 20 to 40 of alumina, 10 to 20 of quartz, 10 to 15 of talcum, 5 to 10 of feldspar, 2 to 16 of porcelain clay, 10 to 20 of Suzhou black earth, 5 to 10 of white mud and 3 to 5 of titanium dioxide. The welding backing of the invention optimizes the welding metallurgy process of CO2 vertical electrogas automatic one-side welding, and provides better weld quality and welding performance than that of CO2 vertical electrogas automatic welding, so that the welding procedures are reduced, the welding materials are saved, the welding production efficiency is improved and, more importantly, the weld quality is enhanced.

The invention discloses a method for counter-slope surface soil thickness increasing,permeation increasing and soil preparing of slope croplands, and relates to a method for permeation increasing and soil preparing of slope croplands. The method aims at solving the technical problems that at present, through a method for preventing and controlling water and soil loss of slope croplands, the height equality is hard to achieve, the occupied cultivation area is large, surface soil layers are disorganized, and the output reduction is caused. The method includes the steps of conducting shoveling in the direction opposite to the water running direction of a furrow and upwards pushing topsoil to form an inner channel, digging a groove in the pit bottom of the inner channel, filling the groove with a mixture of straw, fine sand and topsoil, placing deep soil dug out of a water storage permeation increasing groove on the lower portion in the water running direction of the furrow, and conducting backfill on the surface of the inner channel and the surface of a counter-slope surface soil ridge so that the bottom of the inner channel can be located on the same horizontal line. The method has the advantages that the rainfall water level can be reduced, the water and soil conservation effect is improved, the soil and nutrient loss of slope cropland surface layers is reduced, the ridge directions of the slope croplands are not changed, no land area is occupied, and the method is particularly suitable for slope croplands in black soil regions in the Northeast with vast territory, sparse population and shallow topsoil.

The invention relates to a substrate used in cotton cavity seedling transplantation and relative method, wherein said substrate is formed by mixed peat, black soil and vermiculite at 2:1:0.5, added with 0.25% ammonium phosphate. And the method for cavity seedling comprises that: wetting the substrate and putting into cavity disc with 176 cavities, compressing, seeding one grain into one cavity, covering vermiculite at 1.5cm, pouring water, putting disc into warm room, plastic booth or arc booth, grow seeding without irritating, irrigating water one time for 3-5 days in leaf period, irrigating water one time for 2-3 days in real leaf period, ventilating, moving substrate into large field when the seed old is 35-40day; in the process, feeding nourishment one time when the real leaf grows out that putting 2g ammonium phosphate into each cavity; 3 days before removing seed, putting rooting agent. With said invention, the survive rate is more than 98%, the seed period can reach 5-6days, the yield can increase 10%.

The invention provides a method and a device for determining the content of organic matters in black soil in Northeast China based on a spectral characteristic wavelength. The method comprises the following steps: collecting soil light reflectance values on 10 signature wavelengths, wherein the characteristic wavelengths are 400nm, 730nm, 1026nm, 1296nm, 1544nm, 1885nm, 1912nm, 2013nm, 2205nm and 2314nm; converting the soil light reflectance values into soil absorbance values; calculating the content of the organic matters in the soil by the soil absorbance values of the characteristic wavelengths through a multiple linear regression equation. The device comprises a spectrum collection device and an embedded type processing device, wherein the spectrum collection device comprises a base, a sample box, a cylindrical rotary table and a bracket fixedly arranged on a base plate; the sample box is fixedly arranged on the upper surface of the base and the embedded type processing device is mounted inside the base; the rotary table is vertically arranged rightly above the sample box by the bracket. The method and the device provided by the invention have the beneficial effects that the content of organic matters in the black soil in Northeast China is detected rapidly, the detection time is shortened and the cost is reduced.

The invention relates to a soil layer displacing method and a soil layer displacing plow. The soil layer displacing method comprises the following steps: firstly, plowing a plowing layer trench with the plowing layer depth; turning and covering a plowed plowing layer furrow at one side of the plowing layer trench to prepare for the subsequent soil layer displacing operation; secondly, plowing downwards in the plowed plowing layer trench, and plowing, turning and covering the soil in a subsoil layer of the trench on the plowing layer furrow to form a deep trench; and finally, turning and covering the soil of a plowing layer at the other side adjacent to the plowing layer in the deep trench to form a new plowing layer trench. The soil layer displacing method and the soil layer displacing plow have the advantages that: a 'fatigue soil layer' of a surface layer and a 'good soil layer' of a subsurface layer are displaced, and the aims of relieving the 'fatigue soil layer', reducing the harm of residual pesticide and improving the yield of crops are achieved. The invention provides powerful technical support for achieving the protection and utilization of black earth, the sustainable development of agriculture and mechanical improvement of soil in a large area.

The high strength light ceramic filler is prepared with clay 60-78 wt%, black earth 8-15 wt%, calcium carbonate 8-15 wt%, talcum 3-10 wt% and rice bran powder for the rest. Chemically, it consists of silica 50-60 wt%, alumina 13-20 wt%, calcium oxide 3-8 wt% and magnesia 10-16 wt% except impurity. It has high compression strength, long service life, low impurity content, high whiteness and high porosity.

The invention relates to a method for using classical statistic to research fertility evaluation index of black soil area of HeiLongJiang province, and relative evaluation method, wherein it can research and screen relative indexes of the fertility of black soil; it uses SAS software program data to analyze collected black soil sample; then based on the main element analyzed data, calculating out the black soil fertility character valve F; based on the volumes of F, it can be divided into 5 levels, to evaluate the fertility of black soil area reasonably.

The invention discloses a recovery, utilization and management method for black soil mountain vegetation, and belongs to the technical field of the recovery, utilization and management of degraded grassland vegetation in alpine regions. The method includes content of the planting area selection, grass seed selection, sowing modes, sowing amount, sowing time, sowing depths, fences, rodent control and agronomic measures of black soil mountain degraded grassland vegetation recovery, and the reasonable utilization and scientific management after planting. The method is suitable for the planting and utilization of black soil mountain degraded grassland vegetation that the thickness of a soil layer is more than 15 cm and the slope is greater than or equal to 15 degrees.

The invention relates to a straw-derived naturally-degradable rice seedling tray and a production method thereof; the straw-derived naturally-degradable rice seedling tray is produced from, by weight, 30-60 parts of plant straws, 30-60 parts of farm manure having a water content of less than 20%, 3-8 parts of water, 3-8 parts of mineral powder, and 10-40 parts of black soil; the mineral powder comprises, by weight, 80-89% of SiO2, 0.1-0.3% of TiO2, 0.4-1% of K2O, 0.05-0.2% of Na, 0.007-0.009% of S, 0.4-0.8% of Fe2O3, 0.4-0.8% of Ca, 0.4-0.8% of Mg, and the balance of impurities. The straw-derived naturally-degradable rice seedling tray can degrade naturally so that environmental pollution is avoided; the straw-derived naturally-degradable rice seedling tray is produced mainly from crop straws, such as corn straw, and rice straw, the problem that traditional seedling raising selects the surface soil layer of a tillable land is solved, the utilization of the surface soil layer of a fertile farmland is greatly decreased, the tillable land can be protected, the seedling raising process is simplified, and working efficiency is improved.

The present invention discloses a cultivation method for lobular red sandalwood nursery stock. The method is characterized by comprising the following steps of: 1) selecting a shoot for cutting: selecting a root segment of a lobular red sandalwood tree with roughness of 0.5-1 cm and a length greater than 6 cm as the shoot for cutting; 2) controlling cuttage time; 3) treating the shoot for cutting; 4) preparing a cuttage medium: using a cuttage container filled with a nutrient medium to carry out cuttage, the nutrient medium comprising, from bottom to top, a first-layer medium, a second-layer medium, and a third-layer medium, wherein the first-layer medium is formed by mixing black soil, biogas, and peat in a mass ratio of 1:1:1 ; the second-layer medium is formed by mixing leaf mold, coconut dust, and vermicompost are mixed in a mass ratio of 3:1:2 ; and third-layer medium is formed by mixing leaf mold and vermicompost in a mass ratio of 2:1; and and 5) carrying out a cuttage process: controlling inserted depth of the shoot for cutting to not exceed 1 / 3 the second-layer medium. The lobular red sandalwood nursery stock cultivated by the cultivation method disclosed by the invention can grow to be used for making furniture about 20 years later after transplanting, and the growth rate of the lobular red sandalwood is significantly increased.

The invention provides a device convenient for testing the output voltage of a power supply. A connecting piece is arranged between the plug of an output cable of the power supply and a power supply socket of a main board and is connected in series with the plug and the socket correspondingly, and moreover, the connecting piece is also connected with a test socket with the same plug number and arrangement with the plug and the socket. By the test socket, a common voltage test instrument can be used for testing all output voltages of the power supply electrically and can perform overall real-time voltage test from computer power up, to bios post self detection and to computer load running on a system. A switch is integrated on the connecting piece or a test socket to control the connection and disconnection of a 16th PIN green wire and a 17th PIN black earth wire; and the green wire and the black wire are controlled to be connected or disconnected by the switch so as to test the no-load voltage output condition of the power supply.

The invention discloses antique-like naturally-colored porcelain which comprises the following components in parts by weight: 25-35 parts of purple clay, 15-25 parts of kaolin from Quanzhou region, 5-15 parts of black soil from Jinjiang coastal region, 15-25 parts of brown soil from Dehua, 15-25 parts of silt, 15-25 parts of stone needle powder and 25-35 parts of reticulated laterite. According to the invention, the size of particles is ensured by refining, so that the phenomenon of being full of bumps and hollows can not be produced in the subsequent corrosion process, thereby achieving antique-like effect, and increasing the strength simultaneously; the reticulated laterite is used without adding any coloring pigment and glaze, so that natural coloring can be realized; and the antique-like naturally-colored porcelain is high in hardness and low in heavy metal content.

A medium trace element long-acting compound fertilizer capable of improving soil and suitable for black earth comprises, by weight, 15-25 parts of organic fertilizer, 8-15 parts of potash fertilizer,7-15 parts of phosphate fertilizer, 4-6 parts of medium trace elements, 10-30 parts of humic acid activated through an ammoniation method, 4-6 parts of macromolecular organic protein water-retaining agent, 0.2-0.5 part of composite microbial flora and 0.6-0.9 part of coating nutrition agent. The composite microbial flora is a mixture of Fungi IMperficti, Trichoderma Viride and Bilaiae Penicilliumin the weight ratio of 4:3:3. The compound fertilizer solves the antagonism problem of elements in the fertilizer, so that organic substances of the black earth are increased, stable yield and yield increase of crops are guaranteed, and the soil of the black earth can be improved.

The invention discloses a ceramic product for a closestool and preparation method of the ceramic product. The ceramic product comprises the components in part by weight as follows: 14-15 parts of black earth, 14-16 parts of loess, 35-45 parts of porcelain powder, 5-10 parts of kaolin powder, 10-12 parts of semi porcelain clay, 26-30 parts of feldspar powder, 20-40 parts of tourmalines, 10-25 parts of medical stones and 2-10 parts of zeolites.

The invention provides a special fertilizer for beer barley. The special fertilizer is prepared from nitrogen, phosphorus and potassium (N:P2O5:K2O) in a ratio of 1-1.8:1.3-2.4:1.1-2.6, wherein for four types of soil, namely black earth, dark brown earth, meadow soil and albic soil, where the barley is planted, the proper ratios of nitrogen to phosphorus to potassium(N:P2O5:K2O) for fertilization are 1.0:1.0-2.0: 1.0-2.0, 1.0:1.2-1.5: 1.2-1.5, 1.0:1.5-2.0: 1.5-2.0, and 1.0:1.0-1.2: 1.0-1.2 respectively. The special fertilizer produced by the formula can obviously increase the yield of beer barley and improve product quality and is widely used as the special fertilizer for the beer barley.

The invention discloses special green feed for fattening black pigs, and relates to the field of technologies for processing feed. The special green feed comprises, by weight, 50-55 parts of symphytum officinale, 45-50 parts of silphium perfoliatum, 35-40 parts of amaranthus hypochondriacus, 15-18 parts of bran, 13-16 parts of rice bran, 12-15 parts of soybean meal, 10-13 parts of rapeseed meal, 9-12 parts of fishbone meal, 8-10 parts of soybean residues, 8-10 parts of shrimp shell meal, 6-9 parts of tea seed cake, 5-8 parts of tea residues, 4-7 parts of fruit residues, 3-5 parts of distillers' grains, 8-11 parts of flavoring agents and 6-10 parts of gastrointestinal regulators. The special green feed has the advantages that forage is used as a main raw material and is supplemented with diversified food processing byproducts and waste, accordingly, resources can be reasonably utilized, the production cost of the feed can be reduced, and the special green feed is green and environmental friendly; the feed is good in palatability, has high nutritional value and is high in digestibility after being eaten, and accordingly the black pig fattening time can be effectively shortened.

The invention discloses a grape planting method and relates to the technical field of fruit tree planting. The method comprises the steps of 1, seedling selection; 2, land preparation, wherein after mixed fertilizer is applied to soil, the soil is ploughed and harrowed evenly, then ridging is conducted, a drainage groove is dug between every two adjacent ridges, and planting holes are dug in the ridges; the spacing of every two adjacent planting holes is 20-30 cm, and the mixed fertilizer is prepared from, by weight, 3-6 parts of ammonium chloride, 5-8 parts of plant ash, 1-2 parts of lime and5-8 parts of river sand; 3, seedling planting, wherein black soil with the thickness of 3-5 cm is laid in the planting holes, and root systems of cutting seedlings are dipped into a nutrient solution, placed into the planting holes, and then buried with soil; the nutrient solution is prepared from, by weight, 1-2 parts of chicken manure, 7-9 parts of willow bark juice and 1-2 parts of water; 4, pruning; 5, management. By adopting the method for planting grapes, the yield of the grapes is greatly increased.

The invention relates to the technical field of medium alumina ceramic ball formula, and particularly relates to a medium alumina ceramic ball and preparation method thereof. A medium alumina ceramic ball, is mainly prepared from 400-500 parts of low quality processed aluminum ore powder lot, 20-30 parts of kaolin, 20-30 parts of barite, 20-30 parts of dolomite, 10-20 parts of sodium potassium feldspar, 200-300 parts of return material, 300-400 parts of brick, 40-60 parts of calcium sulfate, 30-40 parts of mineral fiber, 10-15 parts of charcoal fiber and 40-60 parts of black earth, after the raw materials are mixed, a mixture is obtained, and the materials are processed. The medium alumina ceramic ball possesses an economical and rational formula of the raw materials, the ceramic balls prepared according to the formula has excellent mechanical force properties and chemical stabilities, and is worthy of being actively promoted.

The invention belongs to the technical field of aquaculture and particularly relates to a method for polyculture of lobsters in a rice planting season. Particularly, rice seeds are selected, are subjected to ozone disinfection and then are sown in black soil in a seedling culture basin; during a seedling culture period, after rice seedlings emerge, 2000-2200-fold liquid of phenylurea is poured into the black soil to maintain the black soil humidity at 80-82%, the rice seedlings obtained by seedling culture are transplanted into the paddy fields; young lobsters are subjected to sequential circulation and alternation through dry method culture and wet method culture and then are placed in the paddy fields; and after the stocking, the lobsters are fed once every 5 days. The lobsters are subjected to polyculture in a rice planting pond, not only can the planting and culture cost be reduced, but also the planting and culture earnings are remarkably improved.

The invention provides a flue-cured tobacco seedling substrate and a preparation method thereof, and relates to the technical field of flue-cured tobacco seedling growing. The flue-cured tobacco seedling substrate comprises the following components in parts by weight: 0.5-2 parts of pine needles, 1-3 parts of black soil and 0.5-2 parts of vermiculite. The preparation method of the flue-cured tobacco seedling substrate comprises the following steps: smashing the pine needles, mixing the smashed pine needles with the black soil and the vermiculite to obtain a mixed substrate, sterilizing the mixed substrate and regulating the pH value, thereby obtaining the flue-cured tobacco seedling substrate. The flue-cured tobacco seedling substrate and the preparation method thereof provided by the invention have the benefits that as the pine needles, the black soil and the vermiculite form the mixed substrate, nutritional components are full, and the growth of tobacco seedlings is more facilitated; materials used for the seedling substrate are wide in source, cheap and easy to obtain; turfs are not required to be used, so that the damage to an ecological environment is avoided, a seedling effect can achieve that of an existing substrate formula, the production cost is reduced, and the ecological transformation and the utilization of waste and the environmental protection are facilitated. Meanwhile, the preparation method of the flue-cured tobacco seedling substrate, provided by the invention, is simple, convenient to operate and very suitable for large-area popularization and application.

The invention discloses a high-yield cultivation method of high-quality wheat in shajiang black soil, and relates to the technical field of cultivation of crops. The method comprises the steps of landpreparation, fertilizer application, variety selection, seed treatment and sowing, sowing quantity management in the sowing stage, management in the growing stage, disease and pest control, wheat harvesting, wheat sun-drying and airing, and wheat warehousing. By means of the high-yield cultivation method of the wheat, yield stabilizing and increasing and benefit increasing of the high-quality wheat in shajiang black soil areas with middle and low yield can be promoted. The method is beneficial to accelerating breeding of fine varieties of the high-quality wheat, accelerating improvement of the quality of the high-quality wheat is accelerated, and improving the high-quality and high-yield planting technological level of the high-quality wheat; promotion of deep processing and comprehensiveutilization of the high-quality wheat and by-products thereof is facilitated, the additional value of agricultural products is increased, industrial chains are extended, the competitiveness of the agricultural products is improved, and farmers are motivated to achieve increase in both yield and income. The improvement of the ecological environment of the shajiang black soil areas is facilitated.

An artificial hatching method for leeches comprises steps of (1) setting a hatching chamber and (2) setting a hatching control strategy. In the (1) step, a layer of hatching soil with the thickness of 1 to 2cm is placed on a box or a basin internal bottom; the hatching soil is mixed by loose sandy oil and loose black soil according to a volume proportion of 40 to 50% to 50 to 60%; then hatching cocoons are placed in the box or a basin; and a layer of fabric is placed on the box or the basin. In the (2) step, the temperature of the hatching chamber is controlled at 20 DEG C to 28 DEG C; the humidity of the hatching soil is 30% to 40%; the relative humidity of air in the hatching chamber is remained between 70% to 80%; the control strategy is that when humidity is inadequate, mist water is sprayed on the fabric and excessive humidity is prevented; and with proper temperature and humidity, young leeches can be hatched in about 25 days. The artificial hatching method for leeches is advantageous in that hatching time can be shortened and young leeches can be hatched in about 25 days; and high hatching survival rate can be achieved.

The invention belongs to the technical field of information extraction, and particularly relates to an adaptive Gaussian low-pass filtering algorithm for extracting black soil organic matter information. The invention aims to provide a self-adaptive Gaussian low-pass filtering algorithm for extracting black soil organic matter information in order to overcome the defects in the prior art. The method comprises the following steps: step 1, carrying out hyperspectral pretreatment on the black land; Step 2, carrying out frequency domain conversion; Step 3, performing self-adaptive Gaussian filtering; Step 4, performing graded extraction; 5, obtaining organic matter extraction result; carrying out comprehensive mapping on the organic matters with various levels of contents to form an aviation hyperspectral extraction result with the organic matter content; wherein the parameters with the highest overall precision and the highest Kappa coefficient are set to be 1 = 0.5 and 1 = 1.1 and applied to black soil organic matter operation, and after classification, the organic matter content of each level is given according to ground analysis data, and the spatial distribution condition of the black soil organic matter content is obtained.

The invention discloses a culture medium for chrysanthemum. The culture medium is prepared from the following raw materials in parts by weight: 20 to 40 parts of straw, 20 to 40 parts of pond sludge,10 to 20 parts of black soil, 5 to 15 parts of trichoderma harzianum spore powder, 10 to 20 parts of sweet potato leaf and stem, 2 to 4.5 parts of pig manure, 10 to 20 parts of tree barks, 5 to 15 parts of rapeseed cake, 2 to 7 parts of lime powder, 1 to 6 parts of phosphated organic fertilizer, 2 to 4.5 parts of vitamin B, 5 to 10 parts of bacillus cereus, and 0.5 to 3 parts of trace elements. The culture medium for chrysanthemum has the advantages that by adopting the effective proportional ratio of the straw, the pond sludge, the black soil, the trichoderma harzianum spore powder, the sweetpotato leaf and stem, the pig manure, the tree barks, the rapeseed cake, the lime powder, the phosphated organic fertilizer, the vitamin, the bacillus cereus, the trace elements, an ion calcium solvent and a nutrient regulator, the invasion by diseases and pests is reduced; the photosynthesis of the chrysanthemum is promoted by the effective proportional ratio of the raw materials, the rooting ofthe chrysanthemum is promoted, and the survival rate is improved; a crusher is used for crushing the raw materials, so that the composting and decomposing of the raw materials are accelerated, the absorbing of the chrysanthemum is promoted, and the great function is realized for the robust growth of the chrysanthemum.

The invention discloses special sprouting soil for Malabar spinach. The sprouting soil comprises the raw materials in parts by weight: 80-120 parts of loess, 40-60 parts of black soil, 20-30 parts ofplant ash, 1-5 parts of rare earth, 30-50 parts of rice husk, 15-20 parts of quail faeces and 15-20 parts of clear water. The invention further discloses a preparation method of the special sproutingsoil for Malabar spinach, and the preparation method comprises the steps: soil selection, mixing and pretreatment; soil frying and freezing; fermentation; and mixing. The special sprouting soil for Malabar spinach, provided by the invention, is high in nutrient content and loose and soft in soil quality, the Malabar spinach seeds sprouted by using special sprouting soil are short in sprouting period and high in efficiency, the sprouting ratio can reach 98% which is increased by 20% as comparison with an existing sprouting method, and the Malabar spinach seeds sprouted by using special sprouting soil is low in incidence rate and high in growth speed after being planted; and the preparation method of the special sprouting soil for Malabar spinach is simple, free of expensive instruments andtest conditions and suitable for the extensive grass-roots farmers, and the special sprouting soil can be successfully prepared by common peasant families according to the method.

The invention belongs to fruit tree cultivation, in particular to a method for the non-polluted cultivation of amur ampelopsis stems. The method concretely comprises the steps of field selection, planting system selection, garden building, soil management, fertilizer application, irrigation, pruning, disease control, harvest, winter protection, winter protection removal and other technical measures, wherein a field far away from pollution sources is selected; a planting system of single-arm trellis is selected; the soil management is to select sandy loam or sandy black earth; the fertilizers application is to mainly apply organic fertilizers; generally, the irrigation is unnecessary when the natural rain satisfies demands for growth; the pruning is performed in summer and winter with proper inflorescence scatter; the disease control focuses on prevention; the harvest is carried out late duly; and the winter protection and the winter protection removal are to cover 10 to 15 centimetersof soil in grape valleys after grape leaves fall off in the same year of field planting and remove the soil after the tomb-sweeping day in the following year. Through the above measures, the method ensures that the amur ampelopsis stems pass winter safely and give considerable yield.

The invention belongs to the technical field of information extraction methods, and in particular relates to a method for predicting nitrogen, phosphorus and potassium content of black soil using aerial hyperspectral data: Step 1: data preprocessing, using the FLAASH algorithm based on MODTRAN4+ radiation transfer model to preprocess hyperspectral data , remove abnormal bands and normalize the spectral data after radiation correction and geometric correction; step 2: spectral parameter calculation, calculate the spectral parameter values ​​​​of 3 major categories and 18 subcategories, and the calculated spectral parameter values ​​​​are used as training data, Modeling with assay content; Step 3: Establish a model, use principal component analysis to extract the factor with the greatest correlation between soil nutrient content and spectral parameters, use the least square method to establish a regression equation, and finally perform a root mean square error on the model prediction results Evaluate and analyze the regression effect.

The invention discloses a method for improving the success rate of planting forage grass in an erosion ditch in a black soil area, and particularly relates to the field of forage grass planting. The method comprises the steps of seed treatment, terrain selection, sowing, field management and harvesting utilization. The characteristics of the alfalfa and the awnless brome are utilized, the two kinds of forage grass seeds are planted in a mixed mode, the yield of the two kinds of forage grass can be greatly increased, the environment of the erosion gully of the black soil area in the northeast can be improved, and the soil fixation and slope protection effects of mixed sowing of the alfalfa and the awnless brome are more remarkable.