261results about How to "Improve physical structure" patented technology

The present invention provides methods and apparatuses for processing readable content stored in a stream of data which contains samples for presenting a presentation at a plurality of views. In one embodiment, the first stream is stored and a second stream is derived from a first stream, where the second stream contains references to the first stream for use in selecting data, for an operating point within the content that includes the plurality of views, from the first stream. According to one aspect of the invention, references contained in stored second stream are accessed to transmit or store the data from the first stream.

The invention discloses a method for preparing a patch mortar additive and patch mortar for concrete. The additive comprises a component A which comprises the following substances in portion by weight: 4 to 8 portions of silica powder, 10 to 12 portions of S105 slag powder, 8 to 10 portions of I-grade fly ash, 8 to 10 portions of UEA swelling agent, 0.3 to 0.5 portion of polycarboxylate type superplasticizer (powder), and 0.3 to 0.4 portion of polypropylene fiber. Further, the additive can also comprises a component B consisting of phenylpropyl emulsion, water, organosilicon antifoaming agent and OP-10 nonionic surfactant. The method for preparing the patch mortar for the concrete comprises the following steps: weighing the following substances in portion by weight: 100 portions of cement, 200 to 300 portions of yellow sand, and 30 to 40 portions of the component A; and after the mixture is mixed and stirred evenly, gradually adding the water or the component B into the mixture, and mixing and stirring the mixture to form the mortar of which the consistency is between 30 and 70 millimeters. The patch mortar can be well combined with the prior concrete, and can be used for patching concrete cracks and patching concrete defects and corroded and damaged surfaces.

The invention discloses a preparation method of a catalyst for catalyzing ozonation for advanced treatment of coal chemical wastewater and relates to a preparation method for the catalyst. The preparation method is used for solving the technical problems that the existing ozonation method is poor in ozone water solubility and low in degradation rate, successfully applied to the advanced treatment of the coal chemical wastewater, and capable of removing the degradation-resistant hazardous substances in water, improving the biodegradability of the wastewater and enabling the quality of the outlet water to reach the first-grade national emission standards. The preparation method comprises the following steps of: firstly, washing active carbon particles; secondly, soaking the active carbon in a metal nitrate solution, shaking for mixing and reacting, and taking out the active carbon 12 hours later; and thirdly, drying the active carbon and putting the dried active carbon to a muffle furnace, heating the muffle furnace to 200 DEG C by adopting nitrogen gas as the protective gas, roasting for one hour, continuing heating the muffle furnace to 600 DEG C and roasting for 3 hours at 600 DEG C to obtain the catalyst for treating the coal chemical wastewater. By using the catalyst prepared by the preparation method disclosed by the invention, the utilization rate of ozone is greatly improved, and the catalyst is very suitable for the field of coal chemical wastewater treatment.

The invention discloses a method for recovering vegetation on a strong-acid tailing waste land without soil. The method is characterized by comprising the following steps: A. performing early-stage preparations, and draining off water; B. changing the pH value of the land; C. culturing the fertility of the tailing waste land; D. screening and culturing plant varieties; and F. managing transplanted seedlings. The method has the advantages that by adopting the method for recovering the vegetation without soil, disturbance to the tailing land is reduced, and the purposes that water can be drained off, the influence of acid water to the vegetation can be alleviated, the heavy metals can be stabilized, and the living environment of plants is improved are achieved. In addition, according to the method, the cost is low, the effect taking is rapid, the effect is good and the operability is high.

A physical quantity sensing element according to the invention includes an insulating layer and a sensing layer. The sensing layer is configured to generate an electrical signal as a function of a physical quantity applied thereto and has a surface that includes a first and a second area. The first area is completely covered with the insulating layer so that the physical quantity is to be applied to both the insulating layer and the sensing layer through the first area; the second area is exposed to an application direction of the physical quantity without being covered with the insulating layer and being subject to application of the physical quantity. With such a structure, easy and reliable electrical connection of the physical quantity sensing element with external devices and circuits is ensured. In addition, several practical methods of fabricating the physical quantity sensing element according to the invention are also provided.

The invention relates to a robot demonstrating track generating method based on time-space characteristics. The robot demonstrating track generating method includes steps of 1) recording demonstrating tracks of various degrees of freedom at the tail end of a robot at the same sampling time interval by operating the robot and demonstrating the like tracks multiple times; 2) extracting the common time-space characteristics from the various same types to generate a track template; 3) setting up a target equation meeting the time-space characteristics, and solving the motion track of the robot by a covariant gradient descent method; 4) utilizing the motion track as the reference track to input into an executing mechanism of the robot, tracing the tracks by a controller of the robot so as to enable the generated tracks to be consistent with the reference track. Compared with the prior art, the robot demonstrating track generating method is added with the time-space characteristics obtained by learning of the demonstrating tracks on the basis of complying with original constraints; by adding the constraints, search space of the tracks can be limited and solution speed is accelerated.

The invention provides a method for animal and plant-biochar synergistically restoring of petroleum-heavy metal polluted soil. Biological carbon base fertilizer is applied into the petroleum-heavy metal polluted soil and mixed evenly, and seasoning is conducted; earthworms are placed in the petroleum-heavy metal polluted soil to be bred after the seasoning is completed, then castor-oil plants are planted, and the castor-oil plants are removed overall after the harvesting of fruits of the castor-oil plants is completed; after the castor-oil plants are removed overall, the biological carbon base fertilizer is applied into the petroleum-heavy metal polluted soil again and mixed evenly, and seasoning is conducted; after the seasoning, earthworms are placed in the petroleum-heavy metal polluted soil to be bred, and then willows are planted; and the steps are executed circularly and repeatedly until the content of heavy metal in the soil is up to the safety standard. According to the method, the soil remediation effect is good; the combination of the biochar, animals and plants reinforces compound restoration and the effect is very obvious. In addition, secondary pollution to the soil is avoided.

The invention belongs to the technical field of soil remediation, and particularly relates to a remediation method of heavy metal contaminated cultivated land, which comprises the following steps: firstly, deeply ploughing soil and uniformly mixing a heavy metal improver with the soil to improve the soil, and then fertilizing the soil. The method provided by the invention can remarkably reduce theeffectiveness of heavy metals in soil and reduce the influence of the heavy metals on the product quality, and can improve the soil fertility and increase the yield and quality of crops by adopting amode of planting green manure or applying an organic fertilizer.

The invention discloses a method for jointly repairing vegetation and application thereof. The method comprises the steps of: (1) planting shrubs; (2) covering soil, and sowing seedlings of resistant herbaceous plants or planting seedlings of herbaceous plants; and (3) sowing moss. The method has low cost and remarkable effect, can avoid or control the pollution of heavy metal, can avoid and fix sands or conserve water and soil, and plays an important part in protecting environment.

The invention relates to high-permeability super black decorated base paper and a preparation method of the high-permeability super black decorated base paper, and belongs to the technical field of decoration base paper. The preparation method is characterized by comprising the following steps: taking pulp mixed from bleached softwood pulp and bleached hardwood pulp according to the mass ratio of 1:(3.6-4.4) as a main raw material; reducing the beating degree of bleached wood pulp to 32 SR, enabling the mass concentration to reach 4%, and then pumping into a repulping pond for later use; directly adding a black pigment to the repulping pond, wholly substituting kaoline for titanium dioxide to prepare the decorated base paper with a black and shiny color, the fluorescent whiteness of 6%-8%, the basis weight of 70-90g / m<2>, the ash content of 10%-15%, the wet strength of 6.5-9N, the dry strength of 35-50N, the water absorption of 20-35mm / 10 minutes and the air permeability of 15-20s / 100ml. The high-permeability super black decorated base paper disclosed by the invention has the advantages of uniformity in coloring, good covering power, high air permeability, low basis weight and high paper output ratio; a processed decorating plate is high in stereoscopic impression, pure and bright in color and luster, green and environmental-friendly without white patterns.

A device operable as an electronic shark deterrent has a high-voltage pulse signal waveform generator for pulses to be applied to electrodes immersed in water to deter sharks and other aquatic creatures. A preferred output waveform has a train of pulse bursts of alternating-polarity pulses in a series. Preferably, the timing intervals between pulses are of irregular duration, the amplitudes of pulses are varied to be irregular, and the interval between pulse bursts is kept to less than about 5 seconds, in order to be more effective as a shark deterrent signal. The device has the signal waveform generator enclosed in a thin, planar case mounted to a belt connector and a fastener strap for attachment to a part of a user's body. It can include a water-detection probe for automatic activation when immersed in water, a status LED indicator, and electrodes embedded in a layer at opposite ends of the fastener strap with an insulative screen layer for reducing electrostatic effects on the user.

The invention relates to a weak alkaline solid water soluble fertilizer for improving acid soil and a preparation method thereof. The weak alkaline solid water soluble fertilizer is prepared from the following raw materials according to mass percent: 5 to 15% of mineral resource fulvic acid, 5 to 20% of biochemical fulvic acid, 2 to 6% of compound amino acid, 5 to 15% of sodium metasilicate, 40 to 60% of nitrogen containing alkaline fertilizer, 8 to 10% of monopotassium phosphate, 0.05 to 0.1% of zinc, 0.01 to 0.03% of copper, 0.05 to 0.1% of boron, 0.005 to 0.03% of molybdenum and 0.1 to 1.0% of fungicides. The invention further provides a preparation method of the solid water soluble fertilizer. The fertilizer integrally shows alkalinity or physiological alkalinity, iron and manganese elements which are toxic to crops in an acid soil environment are avoided during trace elements selection, various nutrients such as organic matter, inorganic salt, beneficial bacteria and the like are supplied, and additionally, alkaline factors are released, so that the fertilizer is suitable for facility vegetable soil with severe acidification.

The invention relates to a method for planting plants by improving a shallow groove and restoring salinate fields in situ; the method comprises the following steps: for planting different plants, shallow-groove strip tillage is carried out on the salinate; a layer of cornstalk, a layer of cow dropping and a layer of cornstalk are laid at the bottom of the groove, then a saline-alkali reducing agent is applied, and then a layer of artificially improved soil which is mixed by luvisol dug from the tillage and artificial biological substrate matured by the cornstalk and the cow dropping in advance is applied; finally, the seeds of the plants is spread into the artificially improved soil, watered and surefooted and field management is carried out; and a layer of cornstalk is laid between the adjacent shallow grooves, the luvisol is used for building a ladder-shaped drainage ditch which is communicated with a water-collecting tank, thus draining excessive water in rainy season.

The invention discloses composite soil for planting blueberry. The composite soil is prepared by mixing the following components in percentage by volume: 30-35 percent of arenosols, 15-20 percent of humus soil, 10-15 percent of turfy soil, 15-20 percent of cornstalk meal, 15 percent of vermiculite, 1 percent of zeolite and 4 percent of smoke charcoal; and meanwhile, the proportions of the arenosols and the humus soil are maintained at 50 percent in total, and the proportions of the turfy soil and the cornstalk meal are maintained at 30 percent in total. Furthermore, 1.0kg of sulfur powder and 1.5kg of decayed chicken manure are added into per cubic meter of soil. The invention provides a preparation method for planting the blueberry. The composite soil and the preparation method disclosed by the invention have the beneficial effects that after the composite soil is prepared for 1 month, the pH value is 4.0-4.2 and the organic matter content is 8-10 percent, namely, both the pH value and fertility of the soil can meet the growth requirements of the blueberry. The blueberry after being cultivated in the composite soil can vigorously grow.

The invention relates to a compound passivator of heavy metal contaminated soil and a preparation method and application of the compound passivator of heavy metal contaminated soil. The compound passivator comprises 8.0 to 10.0% of slaked lime, 25.0 to 30.0% of modified diatomite, 35.0 to 40.0% of modified phosphogypsum and 25 to 30.0% of biomass carbon in percentage by weight. The use amount of the compound passivator varies according to the soil contamination degree, generally within 1.5% to 2.0%. The preparation of the compound passivator is prepared by mixing the slaked lime, the modifieddiatomite, the modified phosphogypsum and biomass carbon proportionally; the compound passivator disclosed by the invention has a good application effect in remediation of cadmium, lead, zinc and copper compound contaminated soil by a synergistic action of multiple different passivation mechanism components, further can improve the vegetable quality and reduce crop absorption of pesticide residues, and is suitable for remediation of the large-area heavy metal contaminated soil, including the remediation of heavy metal contaminated farmland soil near industrial and mining areas and contaminatedsites in heavy metal production enterprises. The compound passivator can passivate various heavy metal elements and has high passivation efficiency.

The invention provides a solanum tuberosum and double cropping rice rotation crop rotation culture method for improving a south double cropping rice paddy soil micro-aggregate structure, and belongs to the field of agricultural production. The method mainly comprises the first step of solanum tuberosum high-yield cultivation and the second step of early rice and late rice high-yield cultivation, wherein the first step comprises the substeps of preparation before seeding, variety selection, cutting of seed solanum tuberosum, seeding at suitable time and coverage of straw and a mulching film, field management comprising timely film breaking, topdressing, drainage and insect disease prevention, timely harvesting, and field returning of solanum tuberosum stem leaves and straw for coverage, and the second step comprises the substeps of variety selection, seedling transplanting, filed management comprising scientific fertilization, weeding, irrigation and insect disease prevention, timely harvesting and field returning of straw. By means of the method, south double cropping rice paddy winter agriculture can be reasonably developed, the rice paddy soil micro-aggregate structure is effectively improved, soil is fertilized, economic benefits of solanum tuberosum in one season are increased on the basis of ensuring the double cropping rice yield, the purposes of improving the rice paddy soil structure and obtaining high-yield year-round crops are achieved, and the popularization value is high.

The invention relates to a soil conditioner, an organic manure containing the soil conditioner and a preparing method thereof. 60.0 to 80.0 portions of pluck is selected according to the weight portion, 30.0 to 40.0 portions of food vinegar is added into the pluck after the pluck is crashed, the dipping extracting solution is concentrated, frozen out and crashed as the beneficiated burden material, then added into pulverized fuel ash after being atomized, 0.1 to 5.0 portions of the beneficiated burden material is selected according to the weight portion, 95.0 to 99.5 portions of pulverized fuel ash is added, and the beneficiated burden material and the pulverized fuel ash are uniformly mixed to be as the soil conditioner; 0.1 to 5.0 portions of the beneficiated burden material and 36.3 to 41.2 portions of the pulverized fuel ash are selected according to the weight portion, 8.7 portions of carbamade with 46 percent of nitrogen content, and 50.0 portions of turf with more than 60 percent of organic substance content are added, and after the materials are uniformly mixed, the organic manure containing the soil conditioner is prepared. Through manuring the soil conditioner or the organic manure containing the soil conditioner, the growing conditions of soil microbes can be improved, the activity of the soil microbes can be energized, the physical behaviour of the soil can be improved, the deliverability of the soil nutrient can be enhanced, the plant growth can be promoted, the stress resistance and the disease resistance of the plant can be enhanced, and the yield per unit and the quality of the plant can be remarkably improved.

The invention provides a method for matching and applying a nitrification inhibitor and biomass carbon to improve a nitrogen fertilizer utilization rate and an application thereof. The method is characterized by comprising the following steps of: smoldering crop straws to prepare the biomass carbon; and mixing dicyandiamide and the biomass carbon and applying the mixture into soil; and adding an ammonium nitrogen fertilizer. When the application amount of an ammonium state or an amide state is 200-400 mgN per kg of soil, the utilization amount of the dicyandiamide is 5-50 mg / kg and the utilization amount of the biomass carbon is 50 g per kg of the soil. The method comprises the following specific application steps of: mixing the biomass carbon and the dicyandiamide and applying the mixture on surface-layer soil to be sufficiently mixed with the soil; and then, applying a chemical nitrogen fertilizer according to a conventional method. The method utilizes the characteristic that the biomass carbon has the very strong adsorption capability on the nitrification inhibitor and the dicyandiamide; before a chemical fertilizer is applied, the biomass carbon and the dicyandiamide are mixed and applied into the soil; and the keeping time of the dicyandiamide in the soil is improved and the inhibition effect of a nitration reaction of converting ammonium nitrogen to nitrate nitrogen is prolonged, so that the leaching loss of nitrogen is reduced and the nitrogen fertilizer utilization rate is improved.

The invention discloses a liquid fertilizer for drip irrigation for a saline and alkaline inland. The liquid fertilizer comprises the following components: 20 to 40 parts of fulvic acid extracted by microbial fermentation, 20 to 30 parts of urea, 5 to 10 parts of ammonium polyphosphate, 10 to 20 parts of potassium dihydrogen phosphate, 2 to 5 parts of an inorganic additive, 2 to 3 parts of ferrous sulfate, 2 to 3 parts of zinc sulfate, 2 to 3 parts of manganese sulfate, and 0.5 to 1 part of 15 to 20wt% plant growth regulator ethanol solution. The pH value of the fertilizer is 3.5 to 4.0. The liquid fertilizer for drip irrigation provided by the invention has the advantages of effectively reducing the pH value of crop rhizosphere soil, improving the bioavailability of soil nutrients, achieving the balanced supply of water and nutrients, and improving the water and fertilizer use efficiency.

The invention discloses a method for remediating petroleum-contaminated soil through coupling a charcoal-loaded surface active agent and a microorganism plant. The method comprises the following stepsof S1, applying the charcoal-loaded surface active agent into a petroleum-contaminated soil surface layer, and then standing and ageing for 80 days; S2, after ageing the soil, watering the soil on the surface layer, enabling the water content to reach to 50 to 60 percent, adjusting a pH value of the soil to be 7 to 8, and then adding a petroleum degradation microbial inoculum into the soil, and fermenting; S3, after fermenting the soil, planting a plant prepared according to different quantitative proportions in the soil, and removing the whole plant after the plant is ripe; and S4, cyclically repeating S1 to S3 until detecting that the content of a petroleum pollutant in the petroleum-contaminated soil is less than or equal to 4.5g / kg. The method for remediating the petroleum-contaminated soil through coupling the charcoal-loaded surface active agent and the microorganism plant provided by the invention adopts an in-situ remediation technology, does not damage environment during theremediation process, cannot bring secondary pollution, is green and environmental-friendly, and realizes a composite remediating mode with a good green cycle remediating effect.

The invention discloses compost and a preparing method thereof. The preparing method includes mixing biochar and organic fertilizer material for composting to obtain the compost. The compost is of good air permeability, water holding ability and fertilizer holding ability; the water holding ability and the fertilizer holding ability are 3 times and 15 to 20 times as high as those of soil and are relatively stable; the compost has satisfactory sensory quality; by the use of the compost, availability of nitrogen can be improved, various consumptions of spray melting and the like is reduced, the usage of chemical fertilizers is greatly reduced, temperature gas emission and nitrogen loss in composting are avoided, and the problem of straw burning and the problem of soil fertility degradation are solved; by applying the compost to vegetable seedling raising in medium, stress resistance of seedlings can be evidently improved, nutrient absorption and growth is promoted, and the compost is all natural, friendly to the seedlings and environment friendly.

A compound modification method of natural wheat protein and the application in starch food; the method and application relate to a compound modification method of natural wheat protein and the application of additive in starch food. The present invention provides a compound modification method of natural wheat protein. Wheat protein and reaction medium are taken to prepare the suspension and the suspension is oscillated by ultrasonic; and then the suspension is heated by water bath and mixed by magnetic force; the acid solution is divided evenly according to the circulation times and is added into the suspension in turn; the water bath is stopped 8 to 15 minutes later; the excessive acid is neutralized by alkalescent salt added until the pH value reaches 7; and then the suspension is oscillated by ultrasonic continuously and the alkalescent salt concentration is 0.05 to 0.2 mol / l; the product finally obtained is frozen and dried until the constant weight; and then the product is ground to get the natural wheat protein modified with the compound modification method. The modified wheat protein, as the additive of starch food, can replace the additive of inorganic salts and be used for food processing of flour powder, noodle, bread, etc.

The invention provides an organic fertilizer for reducing morbidity of cucumber root-knot nematode. The organic fertilizer comprises the following raw material in weigh ratio: 35-40 of wormcast, 25-30 of smashed corn straw, 28-30 of sawdust and 8-10 of vermiculite. The preparation method comprises the following steps: fully and evenly mixing the smashed corn straw, the sawdust and the vermiculite which are weighed proportionally, and moistening with a proper amount of water so that the water content of the compositing material is 50-60%; piling up the corn straw, the sawdust, the vermiculite and the like in a plastic house or in the open air, and adding 3000-5000g of fermentation bacteria agent in each ton of material for fermentation; and fully and evenly mixing the completely fermented mixture of corn straw, sawdust and vermiculite with the weighed wormcast, smashing, drying and finally packaging. The organic fertilizer can be directly used as a base fertilizer for cultivating cucumbers, thereby effectively alleviating the harm of root-knot nematode. The morbidity is reduced by 79.4%, and the yield of the cucumber is improved by 34.4%.

The invention relates to a method using native landscape plants to restore return-land-to-lake wetland soil; phytocoenosis main collocation methods comprise the following 4 modes: 1, landscape plant arbor-shrub-grass interbreed mode, i.e., overstory arbor+middle lamella arbor+ground cover plants; 2, landscape plant arbor-shrub interbreed mode, i.e., overstory arbor+middle lamella arbor+original ground cover plants; 3, shrub-grass interbreed mode, i.e., middle lamella arbor+ground cover plants; 4, ground cover plant single mode, introduction ground cover plants+original ground cover plants. The method introduces fast-growing native landscape tree species so as to fast adapt to the growing environment, thus forming landscape, becoming colony advantage species, and controlling alien species invasion; the method can improve farmland soil physical composition and nutrition status, can eliminate (degrade) residual poisonous and harmful pollutants, thus realizing soil pollution purification under nature conditions, realizing self-restoration, i.e., expressing soil-plant system degrading purifying effect.

The invention discloses a garbage soil improvement agent and an improving method of garbage soil. The improvement agent is a mixture of biomass charcoal, hydroxyapatite and earthworm soil in mass ratio of 1-10:1-5:10-30. When used for improving the garbage soil, the soil improvement agent provided by the invention can remarkably relieve damage of garbage soil to green plants and grass-blade plasmalemma in the lawn, improve the physiological stress resistance of plant and remarkably promote growth of plants. Moreover, by application of the garbage soil improvement agent, the physical structure and chemical properties of soil in refuse landfills can be improved, and the biological environment of the refuse landfills is protected and further a novel path is provided for controlling pollution of the refuse landfills. The improvement agent has good economic, biologic and social benefits.

The invention provides a restoration method for heavy metal polluted soil of ore districts. Castor-oil plants are planted, biological carbon base fertilizer is applied into the heavy metal polluted soil of the ore districts at the same time, the biological carbon base fertilizer is mixed evenly and seasoning is conducted; biological carbon base fertilizer is applied into the heavy metal polluted soil again after the seasoning, and seasoning is conducted again; earthworms are placed in the heavy metal polluted soil to be bred after the seasoning; after the earthworms are introduced to the soil normally, willows are planted and biological carbon base fertilizer is applied into the soil at the same time, and the willows are removed overall after a certain period; and the steps are executed circularly and repeatedly until the content of heavy metal in the soil is up to the safety standard. According to the restoration method for the heavy metal polluted soil of the ore districts, the restoration effect for the heavy metal soil of the ore districts is obvious; the restoration period is short, and secondary pollution to the soil is avoided.

The invention provides a comprehensive method for soil conditioning and restoration. The method comprises the following steps: before crops are planted or after fruit trees are harvested, oyster shellpowder, silicon-calcium-potassium-magnesium fertilizer, biological organic fertilizer, a biological control agent and ternary compound fertilizer are applied to soil; before the fruit trees are sprouted and bloomed, a macroelement water-soluble fertilizer and humic acid water-soluble fertilizer are applied to the soil; during a swelling period of young fruits of the fruit trees, silicon-calcium-potassium-magnesium fertilizer and a composite microbial bacterial liquid are applied to the soil; and during a fruit strengthening period of the fruit trees, high-potassium fertilizer and seaweed fertilizer are applied to the soil. The method is used for conditioning and restoring the soil, so that the pH of the soil tends to be neutral, and the acidification degree is obviously reduced; the organic matter content of the soil is obviously increased, the soil becomes loose and breathable, and the soil layer is deep and thick; and the heavy metal content in the soil is reduced, so that securityof the planted crops is improved, and the yield is improved. The method provided by the invention does not interrupt growth of the crops in the soil, enables the crops to grow healthily while conditioning and restoring the soil, and improves quality of the crops, so that economic benefits of growers are guaranteed.

An environmentally friendly slow-release fertilizer production method, including mixing slurry, granulating, drying, cooling, screening, adding activated humic acid and polyaspartic acid into molten urine, and mixing thoroughly , the resulting mixed slurry is used as the liquid phase for compound fertilizer granulation and is sent to the granulator for granulation. The slow-release fertilizer product produced by the invention has good effects. Active humic acid and polyaspartic acid are added to the molten urine, which improves the low nitrogen utilization rate, can play a nitrogen synergistic effect, and at the same time improves the nitrogen utilization rate. The availability of phosphorus and potassium in the soil stimulates crop growth, provides more comprehensive nutrition, and has a significant yield increase effect.

The invention relates to a humic-acid soil conditioner and a preparation method thereof. The soil conditioner disclosed by the invention is composed of soil conditioner mother liquor, amino acid, citric acid, polyacrylamide, humic acid, urea, ammonium dihydrogen phosphate and potassium chloride in a mass ratio of (50-65): (3-10): (0.3-1.5): (2.3-2.9): (3-10): (5-13): (5-6): (5-7). The soil conditioner disclosed by the invention can effectively increase the organic matter and nutrient contents of a newly-built farmland, loosen hardened soil, speed up the maturation process of immature soil, and improve or restore the productivity of lands.

The invention discloses an organic fertilizer for preventing continuous cropping obstacle of tomato. The organic fertilizer is characterized by comprising the following components in parts by weight: 20-30 of wormcast, 25-35 of smashed corn straw, 25-35 of rice chaff and10-15 of vermiculite. The preparation method comprises the following steps: evenly mixing the smashed corn straw, the rice chaffand the vermiculite which are proportionally weighed and then moistening with water so that the water content of compositing material is 50-60%; then piling the mixed material into a trapezoidal stack with wide upside and narrow downside at room temperature or in a greenhouse or vinyl house for aerobic fermentation at a natural state or fermentation with zymophyte; and evenly mixing the completely fermented mixture of corn straw, rice chaff and vermiculite with the wormcast fully. The contents of organic matters in soil are improved by applying the organic fertilizer. Compared with the tomatowithout applying the organic fertilizer, the morbidity of the soil-borne disease of the tomato is reduced by above 80%, and the yield of the tomato is improved by about 20%. The organic fertilizer has the efficacies of modifying the soil, inhibiting propagation of pathogenic bacteria, increasing tomato yield, improving tomato quality and the like.