1549 results about "Soil quality" patented technology

The invention provides a soil improvement type straw compound organic fertilizer and a preparation method of the soil improvement type straw compound organic fertilizer. The soil improvement type straw compound organic fertilizer is prepared from the following raw materials in parts by weight: 30 to 35 parts of rice straw, 25 to 30 parts of animal excrement, 20 to 25 parts of biological charcoal, 10 to 15 parts of soybean meal, 5 to 10 parts of cassava residue, 5 to 10 parts of diatom ooze, 2 to 2.5 parts of plant ash, 2 to 2.5 parts of turfy soil, 2 to 3 parts of zeolite powder, 3 to 4 parts of a microorganism bacterium agent, 2 to 3 parts of sodium benzoate, 2 to 3 parts of ammonium monohydrogen phosphate, 1 to 2 parts of calcium chloride, 1 to 2 parts of amino acid, 1 to 2 parts of starch, 1 to 2 parts of molasses powder and 1 to 2 parts of humic acid. The soil improvement type straw compound organic fertilizer takes plant wastes as raw materials; the quality of soil can be easily improved and the production cost can also be reduced, so that the physicochemical properties of the soil are improved, and the structure of the soil is comprehensively improved, and furthermore, the soil quality has the effects of softness, air permeability, water retention and fertilizer conservation; the aim of producing an environment-friendly high-quality organic fertilizer through preferably selecting heavy metal capable of being passivated, the biological charcoal capable of improving the fertilizer efficiency of the organic fertilizer, and conversion products of organic wastes including the biological humic acid and the like as composting base materials, and optimizing a composting process.

A particle is provided that includes 5 wt % to 90 wt % of agricultural biomass, combustion residues, biosolids, or a combination thereof. A binder intermixed with the agricultural biomass, combustion residues, biosolids, or a combination thereof retains the mixture in the form of a particle. The resultant particle creates a use for existing waste streams while also improving soil quality. A process of stabilizing agricultural biomass, combustion residues, biosolids, or a combination thereof particles is also provided that includes combining agricultural biomass, combustion residues, biosolids, or a combination thereof with mineral and / or synthetic chemical fragments having a bulk density of greater than about 40 pounds per cubic foot and a sizing of about 100% passing through a 30 mesh screen and about 50% or more passing through a 200 mesh screen. By adding binder, a particle is formed that is deodorized and / or stabilized. Through the choice of binder, the particle can be rendered dispersible to rapidly disintegrate into soil.

The invention relates a soil improvement fertilizer containing microorganism, inorganic nutrients, organic matters and a water retention agent, specifically aiming at the saline-alkali soil in Binzhou city, Shandong Province. The organic matters and the water retention agent are beneficial to improving the structure of the soil and increasing the water retention ability effectively, thus providing good growing conditions for the growth of microorganism and crops. Through the complementary mutual benefit of the selected nitrogen-fixing bacteria, photosynthetic bacteria, phosphorus-potassium dissolving bacteria and escherichia coli on metabolism, not only can the addition of an inorganic fertilizer be saved, but also the soil quality not easily utilized in soil can be developed. At the same time, adding different proportions of inorganic nutrients depending on the soil composition can not only acquire the basic nutrients for the crops, but also reduce the waste of nutrients. Long-term application of the fertilizer can improve the soil environment fundamentally, thereby achieving the purpose of transforming the saline-alkali soil.

The invention relates to a technique of ginseng planting, in particular to a method for planting ginseng on a farmland, which includes: land selection, soil improvement, bed making, seed sprouting, seeding, transplanting, shed erection, field management, overwintering cold protection, and ginseng root harvesting. By improving and regulating relevant technical steps and parameters in ginseng planting, the method is more reasonable and highly operable, regulated planting is achieved, farmland soil quality is improved, the requirements of ginseng cultivation are met, ginseng quality is guaranteed, and popularization of ginseng planting on farmlands is benefited. The sprouting is achieved by the sand and water process, seed opening rate reaches more than 90%, and germination rate is increased. Annual ginseng seedlings are used for transplanting, the transplanted seedlings continue growing for 4-5 years on the same farmland, and accordingly land resources are saved, ginseng growth and double-tuber ginseng formation are benefited, photosynthetic area is enlarged, and ginseng quality and yield are increased.

The invention discloses a method for improving saline-alkali soil. The method includes selecting saline-alkali soil improvement fertilizer comprising coal with not less than 40% of humic acid, organic farmyard manure, rhizobium manure and fulvic acid potassium; ploughing the soil and applying the saline-alkali soil improvement fertilizer; applying base fertilizer; irrigating the soil; soaking rice seeds in warm water until the seeds are cracked, sowing the seeds after water in the field evaporates and the soil layer is exposed, and irrigating the soil after the rice seeds take root; performing topdressing, and applying the saline-alkali soil improvement fertilizer and earing nourishing fertilizer according to seedling conditions, water quality and soil quality. The method has the advantages that salt-alkali resistant rice varieties are combined with the saline-alkali soil improvement fertilizer organically, the saline-alkali soil improvement fertilizer can meet nutrition requirements for rice growth, reasonable matching is achieved, raw materials used are from extensive minerals and industrial and agricultural waste, low cost and high pertinence are realized, improvement cost is reduced, and technical popularization and promotion are benefited.

The invention discloses a side slope landslide teaching demonstration device and an experiment method. The side slope landslide teaching demonstration device can utilize the prior art to simulate landslide under various working conditions like rainfall infiltration, side slope upper-portion loading, earthquake dynamic load, upper-portion reservoir water storage, and a system comprehensively demonstrates a side slope landslide damaging mechanism; progressive sliding of side slopes different in gradient, compactness and soil quality is demonstrated; grid lines of an observing area on an experiment groove are utilized to record landslide range of the side slopes, calculate size of landslide, analyze difference between an observing result and a calculating result and comparing difference between an experimental and a theoretical result. The side slope landslide teaching demonstration device aims at demonstrating basic phenomena of soil mechanics, revealing mechanical principles in the soil mechanics and comparing practicability of landslide methods like a bishop's slice method and Sweden slice method so as to help teachers to complete teaching tasks to students in class.

The present invention relates to an organic liquid fertilizer, which is made of the following components after being fermented: 600kg of marine produced serosity, 200kg of syrup, 150kg of bean grain, 80kg of bone dust, 50kg of mother liquor and 310kg of tap water. The organic liquid fertilizer in the prevent invention is characterized in that the fertilizer can improve the soil quality with full nutrient and accelerate the growth for the plant nutrient greatly and so on.

The invention provides a bentonite slurry compression balance shield machine which is applied to the tunneling construction machinery industry and has four operational modes of cut mode, bypass mode, isolation mode and reversion mode; the operating principle of the invention is that a sealed cabin of an anterior shield mounting baffle plate is injected with the pressured bentonite slurry which is the prepared bentonite-water mixture, forming a pressured slurry cabin, the stable cut surface is realized by the compression system and the pressure-maintaining system; the injected pressured bentonite slurry can be penetrated into the stratum with the depth of a plurality of centimeters and embedded into clearances between soil particles, forming a layer of 'slurry film' which can make the stratum relative stable and water seepage resistant and capable of firmly supporting the soil in front side; when the soil is cut by the cutter head, the cut soil enters the slurry cabin through holes in the cutter head and is mixed with the feeding bentonite slurry to form the high density slurry which is closed in the slurry cabin and conveyed to grounded treatment factories by the deslagging pump. The invention causes little disturbance and sedimentation to the stratum, thereby the invention has wide application range of soil quality and is applied to tunnel constructions in places with high ground water pressure such as river bottom, stream bottom and sea bottom.

The invention discloses a construction technology for a high-pressure rotary churning pile for foundation stabilization, which comprises the following steps: 1. a center point of the high-pressure rotary churning pile is determined; 2. a hole is dug on the center point by adopting a hole digging machine until the hole penetrates a concrete foundation and a pond slag layer; 3. a high-injection drilling machine is arranged in place and adjusted to be stabilized, a drill bit of the high-injection drilling machine is aligned to the center point, and the angle of a drill rod is adjusted to be consistent with the designed pile inclination angle; 4. a high-pressure grouting pump of the high-injection drilling machine is opened, a drilling tool is slowly sunk for drilling a hole after the high-pressure grouting pump of the high-injection drilling machine is normally operated, and simultaneously water is delivered into the grouting hole until the designed elevation is reached; and 5. the prepared chemical serum is poured into a filtering aggregate bin, water delivery is converted into serum delivery by a high-pressure pump, and a serum delivery pump is opened for serum delivery, stands and performs spraying for 20 to 40 seconds at the bottom of the pile, and is rotated and simultaneously lifted until the designed pile top elevation is reached. Compared with the prior art, the construction technology has the advantages of suitability for various different soil qualities with hard surface layers, high construction efficiency, low cost, small equipment loss, and superiority suitable for different construction environments.

The invention is suitable for the technical field of recycling organic wastes, and discloses a flora for recycling treatment of organic wastes. The flora for recycling treatment of organic wastes is efficiently compounded from a variety of bacteria such as bacillus subtilis, aspergillus niger, saccharomycete and soil flora, wherein the soil flora is extracted from the natural world and comprises three or more of bacillus megatherium, bacillus mucilaginosus, bacillus licheniformis, bacillus thuringiensis, bacillus laterosporus, bacillus mucilaginosus, streptomyces jingyangensis, mycorrhiza fungi, azotobacter vinelandii, photosynthetic bacteria, bacillus coagulans, aspergillus oryzae, and paecilomyces lilacinus. According to the flora for recycling treatment of organic wastes, disclosed by the invention, by virtue of mutual promotion, mutual coordination and combined action of a variety of beneficial microorganisms, the organic wastes are recycled, environmental pollution is reduced, and wastes are changed into valuables; and the flora for recycling treatment of organic wastes can be used for producing industrial fermentation products and improving the health and growth conditions of animals, and can also improve the current situation of serious soil hardening at present and improve soil quality, thereby promoting the rapid development of agricultural economics.

A method for ecologically improving tobacco-planting soil is disclosed. In October of the first year, after flue-cured tobaccos or corns are harvested, straws are chopped down and spread on furrows directly without plowing soil, straw decomposition accelerator or other microbe fertilizers are spread on the straws, and then ridge soil is dumped in furrows to cover and bury the straws. Green manure is applied in lines, common vetch green manure is applied on the soil surface burying the straws in lines with a width of 55-65cm, and the green manure is buried by ridging without plowing. In the next year, 10-15days before transplanting flue-cured tobaccos, flue-cured tobacco base fertilizer is applied on the green manure according to the line-spacing requirements of flue-cured tobaccos, soil is gathered to the green manure from two sides of the green manure to bury the green manure and ridge for planting flue-cured tobaccos. The method effectively improves soil, lowers production investment, ensures high yield, improves the physical properties of the soil, and increases organic matters and nutrients of the tobacco-planting soil. Moreover, the microbe amount and enzyme activity of the soil and the tobacco leaves quality are improved, the soil quality is retained and improved, and continuous flue-cured tobacco production and development in tobacco areas are facilitated.

The invention relates to the technical field of monitoring and evaluation of a farmland soil environment, in particular to an evaluation method of quality of combined pollution farmland soil. The method comprises the steps of collecting a sample, determining a pollution index and a fertility index of the sample, performing principal component analysis on determination results, making judgment, performing pollution classvevaluation and then performing fertility grade evaluation under different pollution classes if the influence of a pollution factor is higher than that of a nutrient fertility factor, and performing the fertility grade evaluation and then performing the pollution class evaluation under different fertility grades if the influence of the nutrient fertility factor is higher than that of the pollution factor. According to the step-by-step evaluation method of the quality of the combined pollution farmland soil, an analytical result can visually show nutrient fertility characteristics of the soil of all combined pollution degrees; the scientificity of the evaluation of the quality of the combined pollution farmland soil is improved; the quality of the soil environment isimproved; and the method has important significance on the risk assessment of the polluted soil and guarantee of diet safety of people.

The invention belongs to the technical field of agricultural fertilizers, and particularly discloses a nitrogen-fixing microorganism compound fertilizer and a preparation method. The nitrogen-fixing microorganism compound fertilizer comprises polypeptide urea, a phosphatic fertilizer, polypeptide chelating potassium, a compound microorganism agent, a polypeptide compound, a soil conditioner, a medium trace element compound and a nutrition agent; the compound microorganism agent contains nitrogen-fixing bacteria, phosphate solubilizing and potassium solubilizing bacteria, photosynthetic bacteria, probiotics and adsorbate. The preparation method disclosed by the invention comprises the steps of preparing compound microorganism agent fermentation liquor, mixing the fermentation liquor with the adsorbate uniformly and preparing the compound microorganism agent and a microorganism envelope complex agent successively; mixing the microorganism envelope complex agent, a humic acid envelope organic fertilizer and a polypeptide envelope inorganic fertilizer uniformly, under the action of an electric field and a magnetic field, adding medium trace elements, spraying bone glue, and preparing nitrogen-fixing microorganism compound fertilizer particles. The compound fertilizer disclosed by the invention has the effects of adjusting nutrients, stimulating crop growth, improving the agricultural product quality, increasing yield and efficiency, preventing insect diseases, increasing soil fertility, loosening and improving soil quality and the like.

The present invention belongs to the field of slowly releasing fertilizer technology, and the coated slow releasing fertilizer has components including urea or nitrogen fertilizer, phosphate fertilizer and potash fertilizer, urease inhibitor, lightly burnt magnesia, fused calcium magnesium phosphate, zinc oxide, humic acid and refined bentonite. All the components are set inside pelletizing disc and sprayed with water solution of sulfuric acid, coating material is coated on to the surface of urea, and through further cold wind treatment and sieving; the coated slow releasing fertilizer is produced. The present invention has controlled slow releasing of fertilizer components to meet the requirement for crop to grow, and can reduce fertilizer consumption, prevent the environmental pollution of fertilizer, and improve soil quality.

The invention relates to a farmland earthworm cultivation and organism farming method established according to the agricultural production, the soil living characteristics of earthworms and the requirement of modern agriculture ecological environment construction, in particular to a method for carrying out earthworm cultivation and organism farming under a non-crop rotation condition of planting and cultivating. Earthworms are cultivated under the environment conforming to the following cultivating conditions of: keeping the water content of farmland soil to be 20-70 percent; constructing inter-ridge irrigation and drainage channels; building a proper quantity of whaleback-shaped soil slopes used for escaping for the earthworms during raining between ridges or in fields; and putting earthworm seeds into the farmland and cultivating. In the invention, the earthworms are introduced to farmland production based on the characteristics of agricultural economic benefit improvement, agricultural environmental pollution reduction, simple and convenient management requirement, and the like, and meanwhile, proved by field tests, the proposed farmland earthworm cultivation and organism farming technology can improve the soil quality, enhance the soil bioactivity and improve the yield and the quality of agricultural products and the agricultural ecological environment.

The invention provides a composite mineral soil repair agent, which is prepared from the following components in parts by weight: 60-75 parts of medical stone, 5-15 parts of zeolite, 20-25 parts of peat, 5-15 parts of pumice, 5-15 parts of bentonite and 0.5-1 part of microbial fermentation liquid, the repair agent is prepared from steps of material selecting, crushing, mixing, stirring, granulating, drying, checking and packing, the soil repair agent prepared by the invention can perfect soil quality, prevent soil compaction, regulate pH value and adsorb heavy metals to well perfect the growth soil environment of crops so as to beneficially improve the yield of the crops.

The invention discloses a bio-organic fertilizer with straw powder as a main material. The bio-organic fertilizer is composed of, by weight, 50-60 parts of the straw powder, 15-20 parts of rapeseed meal, 6-8 parts of alfalfa meal, 4-5 parts of common achyranthes herb powder, 2-4 parts of garden soil, 5-6 parts of flour, 8-10 parts of vinegar residues, 6-10 parts of soy sauce residues, 4-6 parts of shell powder, bran 10-20 parts of unite bran, 3-4 parts of salvia prionitis powder, 5-7 parts of river mud, 50-60 parts of swill, 8-10 parts of brown sugar and 60-80 parts of faeces of human and animals. The bio-organic fertilizer produced by the method has high organic matter content, and can improve soil quality and soil structure, thereby keeping ecological balance. Besides, the bio-organic fertilizer is comprehensive in nutrition and contains macroelements and microelements required by crops and a large amount of active substances produced during a microbial fermentation process.

The invention discloses a culturing method for duckwheat. The method is characterized by comprising the following steps of selecting proper soil and finely finishing the soil, wherein the soil with rich organic matters, a thick soil layer, a well structure, sufficient nutrients, strong water and fertilizer holding capabilities and good draining is selected for planting, and the soil needs to be finely finished to obtain finely crushed soil blocks; during the soil finishing, applying 3000-4000kg of cow and sheep manure, 25-30kg of calcium superphosphate, 30-35kg of slowly released urea, 2-3kg of ferrous sulfate, 1-2kg of zinc sulfate, 1-2kg of sodium selenite, 6-9kg of potassium chloride, 30-35 kg of decomposed coal, 15-18kg of bamboo charcoal powder and 4-5kg of soil conditioner in per mu land. According to the culturing method for the duckwheat, the yield of the duckwheat can achieve more than 250kg per mu land, the soil quality is greatly improved, the quality of the duckwheat is also obviously improved, and beneficial components such as flavone and trace elements such as selenium and zinc of the duckwheat are improved by 15% compared with those of the traditional duckwheat.

The invention discloses a degradable nutritional seeding-raising pot and a manufacturing method thereof. The seeding-raising pot comprises the following components in parts by weight: 51 to 90 parts of edible fungus wastes, 10 to 49 parts of vegetable fibers, and 0.1 to 10 parts of adhesive, wherein the plant fibers are one or combination of more than two of corn stalks, wheat-straws, beanpoles, bagasse, sugarcane leaves and straws; and the adhesive is one or combination of more than two of white mud, modified starch, polyvinyl alcohol, polyethylene, polypropylene and polyvinyl chloride. The manufacturing method comprises the following steps of: modifying raw materials; and pressing the raw materials by using a press. The seeding-raising pot disclosed by the invention is environmental-friendly, can be used for improving the soil quality, has low production cost, and is favorable for solving the problem on recycling wastes in the edible fungus industry.

The invention relates to a biological repair method for petroleum polluted saline-alkali soil, and belongs to the technical field of environmental biology. According to the principle of microbial ecology, the method regulates the microbial ecological system of the soil by using active sludge and waste biomass, strengthens the biodegradation of petroleum pollution, neutralizes the alkali substances in the soil, and improves the permeability of the soil so as to fulfill the purpose of repairing the polluted soil. The method can effectively treat and dispose the residual sludge and the biomass waste, repair the petroleum polluted soil, reduce the salinization degree of the soil and improve the quality of the soil, and is simple in process and low in treatment cost.

The invention discloses a heavy metal passivator. The heavy metal passivator comprises the following components in parts by mass: 56-77 parts of straw, 15-33 parts of biological charcoal and 6-18 parts of biological humic acid. The heavy metal passivator consists of the straw, the biological charcoal and the biological humic acid, all of which have the effects of improving the quality of compost and improving soil, so that compared with the existing chemical passivator, physical passivator and the like, the heavy metal passivator can improve the soil quality and protect the soil environment better. The heavy metal passivator is used for passivating heavy metals in livestock and poultry manure in the composting process, and passivated compost is applied to the soil so as to further passivate heavy metals in the soil, so that establishment of a fertilizer-soil heavy metal hindering control system is facilitated.

The invention discloses a treatment process for drilling waste sludge in oil and gas field, relating to the technical field of pollution treatment of petroleum and gas exploration drilling. The treatment process comprises the following steps of a. culturing and domesticating microbial degradation bacteria to obtain degradation strains; b. mixing the drilling waste sludge and the degradation strain obtained in the step a according to a proportion of 100:(0.3-0.5) in parts by weight; c. mixing the mixture obtained in the step b with soil according to a proportion of 1:(1.5-3) in parts by weight; d. covering the surface layer of the mixture formed in the step c with soil; e. cultivating plants in the soil of the step d. By using the method, the problems of secondary pollution, high cost and complex operation existing in the conventional treatment technology are effectively solved, and the treated mixture meets the national soil quality three-level standard after the drilling waste sludge plant-soil-microorganism are subjected to innocent treatment together.

The invention relates to a remediation conditioner for chromium-contaminated soil and a remediation method adopting the remediation conditioner. The remediation conditioner comprises raw materials in percentage by weight as follows: 5%-25% of ferrous sulfate, 5%-25% of calcium polysulphide, 5%-30% of humic acid resin, 1%-2% of cow dung and 1%-25% of fungus residues, wherein the humic acid resin is prepared from sulfonated sodium humate, phenol-formaldehyde resin and calcium acetate through activation after crosslinking and curing. The remediation conditioner adopts a simple formula, is mainly used for remediating soil by removing chromium, has high chromium VI removal rate, can increase content of residual-form chromium, can improve the soil quality and improves the sustainable utilization capacity of the soil.

The invention discloses a manufacturing method of a bamboo fiber fertilizer. The manufacturing method comprises the following steps: natural bamboos are broken and crushed at high pressure; the crushed bamboo fiber powder is dried at the temperatures of more than 50 DEG C; and a crop residue is added to the bamboo fiber powder for fermentation. The bamboo fiber fertilizer obtained by the manufacturing method of the bamboo fiber fertilizer can improve soil quality and has the effect of improving yield and increasing simple fruit weight or improving sweetness for various crops. If the bamboo fiber fertilizer is mixedly used with an organic fertilizer, the bamboo fiber fertilizer has better effect of promoting growth or increasing yield.

The invention discloses a method for adjusting the weight of fillers on a masonry arch bridge in a partitioning manner. The masonry arch bridge comprises a main arch ring (1), spandrel arch rings (2), a filler layer (3) on arches, and a bridge panel (4). The method comprises the steps: the filler layer (3) on the arches is divided into an arch top area (31) and spandrel arch areas (32), wherein the arch top area (31) is formed between the main arch ring (1) and the bridge panel (4), and the spandrel arch areas (32) are formed between the spandrel arch rings (2) and the bridge panel (4); lightweight concrete fillers with the apparent density from 800kg / m3 to 1200 kg / m3 are filled into the arch top area (31), and lightweight concrete fillers or ordinary soil quality fillers with the apparent density from 1200kg / m3 to 1950 kg / m3 are filled into the spandrel arch areas (32); and the weight of the filler layer (3) on the arches is adjusted by calculating three objective functions, i.e. bending moments Md, M1 / 4 and Mj generated by the main arch ring on the arch top, the one quarter of an arch span, and arch feet, and the like. The method has the advantages that the utilization efficiency of arch ring materials can be improved, the distribution of the internal force of the main arch ring is improved, and the carrying capacity of the arch bridge is improved.

The invention discloses soil improvement organic biological fertilizer and a preparation method thereof. The soil improvement organic biological fertilizer comprises the following raw materials in parts by weight: 30 to 35 parts of rice straws, 25 to 30 parts of animal dung, 20 to 25 parts of charcoal, 10 to 15 parts of bean pulp, 5 to 10 parts of diatom ooze, 2 to 2.5 parts of soddy soil, 2 to 3 parts of zeolite powder, 3 to 4 parts of a microbial agent, 2 to 3 parts of sodium benzoate, 2 to 3 parts of monoammonium phosphate, 2 to 3 parts of mugwort, 2 to 2.5 parts of licorice, 1 to 2 parts of calcium chloride, 1 to 2 parts of amino acid, 1 to 2 parts of starch, 1 to 2 parts of molasses powder, and 1 to 2 parts of humic acid. The soil improvement organic biological fertilizer takes plant waste as the raw material, not only is beneficial to improve the soil quality, but also can reduce the production cost, thereby improving the physicochemical property of soil, comprehensively improving the soil structure, and enabling the soil quality to achieve the effects of softness, permeability, moisture holding and fertilizer maintenance, and optimizes the composting process by preferentially selecting organic waste converted products capable of passivating heavy metal and enhancing the fertilizer efficiency of organic fertilizer, such as charcoal, biological humic acid of and the like, as compost base materials, so as to achieve the purpose of producing environmental high-quality organic fertilizer.

The invention relates to a method for improving north acidified soil by utilizing biochar. The method comprises the steps of: grinding peanut shells into slices with diameter of 2cm, drying at 60 DEG C, putting in a vacuum tubular furnace, leading in N for 230 minutes at flow velocity of 500ml / min, emptying gas in the furnace body, heating to 400 DEG C under condition of rising rate of 5 DEG C / min, maintaining 400 DEG C for two hours, then cooling to room temperature, thus obtaining black biochar; and grinding the biochar into powder with diameter smaller than 2mm, and applying the biochar and soil with 1 to 5 percent mass ratio into orchard soil or farmland to be restored. The method has the advantages of being simple to use, obviously improving the quality of soil, improving utilization rate of soil nutrient, being simple to use and obvious and endurable in effects, and providing a new way for improving north acidified soil.

The invention discloses a paddy rice cultivation method of double-season mechanized straw returning to field. The method comprises following steps: mechanized crushing of straw returning to field, returning straw to fields, field growing management after returning straw to fields and disease and pest diseases control.The paddy rice cultivation method of double-season mechanized straw returning to field has following beneficial effects: through an original-position full-amount returning mode, resources of double-season early rice and late rice can be reasonably utilized; straw is circularly utilized on the spot and workload is decreased; in addition, environmental contamination and hardened and impervious soil caused by burning of straw are avoided so that soil is improved and fertility betterment is achieved reasonably and soil fertility is improved; fertilizer applying amount is reduced and soil quality is improved; and the method is beneficial for stable and high-yield of double-season early rice and late rice.

An economical environmental-friendly composite fertilizer containing active sludge is disclosed. The fertilizer is characterized in that: the fertilizer is prepared from following raw materials by weight in part: 55-59 of oil tea cake, 40-44 of peanut bran, 39-43 of paulownia saw dust, 40-45 of straw powder, 50-55 of chicken manure, 9-11 of kaolin, 3-5 of humic acid, 2-4 of fern root powder, 7-9 of an EM bacterial agent, 8-9 of potassium salt of fulvic acid, 1-2 of ferric sulfate, 20-24 of the active sludge, 10-14 of calcium superphosphate, 25-29 of urea, 6-8 of a soil conditioning agent and a proper amount of water; the fertilizer is economical and environmental friendly; the active sludge is fermented into organic fertilizers and is cooperated with inorganic element fertilizers, the fertilizer efficacy is good, and the fertilizer can increase the crop yield and effectively improve the soil quality; the soil conditioning agent is added, and therefore the fertilizer has functions of promoting efficacy and promoting plant nutrition absorption; and urea melting coating is adopted so that the slow release effects are significant and the fertilizer efficacy is durable.

An organic fertilizer for plantation of paddy rice is prepared from the following raw materials, by weight, 10-15 parts of corn straw, 15-20 parts of bean straw, 4-7 parts of indolebutyric acid, 25-30 parts of potato straw, 30-35 parts of rape-seed cake, 5-7 parts of silicon fertilizer, 20-30 parts of silicate, 4-8 parts of potassium chloride, 3-9 parts of monoammonium phosphate, 4-8 parts of talcum powder, 3-5 parts of microbial strain, 15-25 parts of livestock excrement, 10-20 parts of urea, 3-9 parts of ammonium bicarbonate, 5-9 parts of zinc sulfate and 7-9 parts of an additive. The additive is prepared from the following raw materials, by weight, 10-15 parts of an organic material, 8-10 parts of trace elements, 0.3-0.5 part of an antimicrobial active component, 4-7 parts of a sustained release agent, 3-5 parts of humic acid and 2-3 parts of a virucide for plant. The invention provides an organic rice fertilizer which has advantages as follows: dosage of a fertilizer is minimized, nutrients are balanced, and soil quality is improved. With the additive and a common fertilizer used together, utilization rate of the fertilizer can be effectively raised, and the soil environment can be improved.