440results about How to "Promote the formation of aggregate structure" patented technology

The present invention provides a microbe composition, tobacco-dedicated biological organic fertilizer containing the composition, its usage method. The microbe composition comprises aztobacter sp., pseudomonas fluorescence, Bacillus megaterium, bacillus mucilaginosus and bacteria capable of preventing and treating plant disease and insect pests. The microbe composition is mixed according to proportion with oligochitosan, lignite, grass charcoal, and bean cake and fermented to make bacteria powder fertilizer, and further added with potassium-enriching shale, bentonite and water-keeping agent to make bacteria granule fertilizer. The tobacco-dedicated biological organic fertilizer contains the above-mentioned bacteria powder fertilizer and granule fertilizer which contains natural mineral and good organic substance, C / N value being large, which fit the growth rule of tobacco plant and promote potassium fertilizer efficiency and possesses long-lasting potassium-supply capability and provides effective ingredient for tobacco.

The invention relates to an agricultural fertilizer, in particular to a microbial compound fertilizer and application thereof. The microbial compound fertilizer specifically consists of a zymophyte agent and a compound fertilizer, wherein each gram of the compound fertilizer comprises not less than 0.2*108 bacterial cells; the compound fertilizer comprises the following components in percentage by weight: 5 to 15 percent of farmyard manure, 10 to 30 percent of humic acid, 5 to 8 percent of grass carbonic acid, 15 to 30 percent of nutrient and the balance of boric sludge; and the zymophyte agent is obtained by fermenting silicate bacteria, azotobacter chroococcum, actinomycetes, saccharomyces cerevisiae and rhodopseudomonas sphaeroides, wherein the silicate bacteria, the azotobacter chroococcum, the actinomycetes, the saccharomyces cerevisiae and the rhodopseudomonas sphaeroides are mixed together in a weight fraction of 1:1:1:1:1. The microbial compound fertilizer acting on a big field can increase the yield of crops by 20 to 30 percent, and simultaneously can obviously increase the percentage of fertile fruits, reduce fruit dropping and overgrow the fruits; besides, the maturation stage is shortened by 5 to 7 days, the yield-increasing effect is obvious, and simultaneously, the microbial compound fertilizer can obviously improve the appearance, the mouthfeel, the color and luster and the like of products, improve the quality by 1 to 2 grades, and prolong the product freshness date.

The invention relates to an agricultural compound biofertilizer, in particular to a compound biofertilizer capable of improving the physical and chemical properties of soil and improving the yield and quality of agricultural products and a preparation method thereof. The fertilizer contains the following materials in percentage by weight: 30-40% of organic substance, 15-25% of plant straw, 14-15% of mixed biological fermentation bacterium liquid and 30-31% of inorganic nutrient, wherein the biological bacteria used in the invention comprise Rhodopseudomonas palustris, microzyme, azotobacter, phosphorus-solubilizing Bacillus megaterium and silicate bacteria; the organic substance components are humic acid, worm excretion and bean cakes; and the inorganic nutrient comprises N, P and K nutrient. The compound biofertilizer can be applied as basal fertilizer or additional fertilizer, and is applicable to all crops. By using the compound biofertilizer, the yield increase amplitude can be 8-10%.

The invention discloses halophilic and alkalophilic microorganism solid bacterial fertilizer of saline-alkaline habitat of desert and a preparation method and application thereof. The bacterial fertilizer comprises 100 weight parts of fermentation material, 1-3 weight parts of sulphur powder, 0.5-1.5 weight parts of zinc sulfate, and 0.5-1.5 weight parts of magnesium sulfate of which the water content is less than or equal to 20%, wherein the fermentation material is prepared by the following steps of: uniformly mixing and stacking 2-5% of drought desert halophilic and alkalophilic microorganism agent, 10-15% of water and 85-80% of organic material for fermentation, fermenting for 7-14 days when the fermentation temperature is 50-65 DEG C, and keeping for 10-20 days when the temperature of the fermentation stack is reduced to 45-55 DEG C. The halophilic and alkalophilic microorganism solid bacterial fertilizer of saline-alkaline habitat of desert disclosed by the invention can dissolve phosphate and nitrate in soil and release a great quantity of fixed phosphorus, potassium and trace elements stored in soil to improve the effectiveness of soil nutrients, and realizes nutrition supply and effective soil for permanent survival of the plant in the saline-alkaline habitat of desert.

The invention provides a method for preparing seaweed urea. Firstly, a concentrated seaweed extract is prepared; during the prilling process of urea, the concentrated seaweed extract and a fused urea solution are evenly mixed, wherein, the weight proportion of the concentrated seaweed extract and the urea added is 50 to 200:1000; then prilling is conducted in a prilling tower to prepare seaweed urea products. After the prilling of the concentrated seaweed extract and the fused urea, the concentrated seaweed extract exists in the form of solid seaweed extract, wherein, the weight percentage of the solid seaweed extract in the seaweed urea is 0.5 percent to 2 percent and the weight percentage of the urea is 98 percent to 99.5 percent. The combination of seaweed and urea can greatly improve the absorption and utilization ratio of urea, and meanwhile has the function of restraining the fast decomposition of urea contents and slowing down loss, thus effectively solving the problem of soil deterioration in current fertilization.

The invention relates to a microbe germ composition, a cyanophyte biological germ leaven which contains the microbe germ, a cyanophyte fermentation nutrient, a cyanophyte biological organic fertilizer and a method for preparation, wherein the microbe germ composition contains plant lactobacillus, bacillus subtilis and swamp Rhodopseudomonas, the cyanophyte biological germ leaven is prepared by microbe germ composition and base, the cyanophyte fermentation nutrient is prepared by cyanophyte biological germ leaven and cyanophyte, the cyanophyte biological organic fertilizer is prepared by cyanophyte fermentation nutrient, organics base and water-loss reducer. The microbe germ composition is provided with the ability for fermenting solid cyanophyte, which can transform nutriment in the cyanophyte into the material for crops. The cyanophyte fermentation nutrient can be superior animal feed. The cyanophyte biological organic fertilizer is provided with crop pest control effect, which adds the soil organics content and improves nutrient utility to accelerate the plant growth belonging to natural superior organics fertilizer.

The invention provides an acidic soil conditioner, and a preparation method and application thereof. The acidic soil conditioner comprises the following components in part by weight: 4 to 8 parts of composite bacterial agent, 80 to 90 parts of acid adjusting factor, 3 to 7 parts of chelate and 2 to 6 parts of organic matter. The acidic soil conditioner adjusts the pH value of soil, promotes formation of soil aggregate structures, improves the physical property of the soil, creates a good ecological environment for the growth of plants, increases organic matters, calcium, magnesium and silicon and the activities thereof, promotes healthy growth of crops, enhances stress resistance and prevents diseases and pests. By adoption of the composite bacterial agent, the constitution of a microflora of the soil can be improved, the microbial activity of the rhizosphere of the crops is enhanced, mineralization of organic pollutants is accelerated, growth of the plants is promoted, and absorption of degradation products and bioremediation of the polluted soil are accelerated. The acidic soil conditioner has no toxicity, residues and pollution, accords with the development tendency of organic pollution-free agriculture and has great popularization and application values.

The invention relates to a soil-structure conditioner capable of stabilizing yield and fixing carbon and a preparation method and application thereof. The soil-structure conditioner comprises, by weight, 30-90 parts of plant materials, 1-40 parts of mineral materials, 1-30 parts of animal materials and 1-10 parts of compound microbial agent. The soil-structure conditioner has the advantages that carbon fixing and emission reduction of soil can be promoted, the formation of granular structures can be promoted, the water retention ability of the soil can be increased, and effective water supply is increased; the soil-structure conditioner can regulate soil pH and lower or reduce aluminum toxicity; saline-alkali soil can be improved, and base saturation degree and cation exchange capacity of the soil can be regulated; an imbalanced soil nutrition system can be conditioned, and effective nutrition supply is promoted.

The invention relates to an organic / inorganic salt and alkali resistant long-acting corn fertilizer, which mainly contains the following active ingredients in percentage by weight: 10 to 28 percent of nitrogen, 5 to 20 percent of phosphorus, 5 to 18 percent of potassium, 10 to 25 percent of sulfur, 5 to 10 percent of amino acid, 1 to 10 percent of humic acid, 1 to 5 percent of medium trace elements, 1 to 5 percent of sustained release agent and the balance of adhensive. A nitrogen fertilizer may be at least one of urea, ammonium chloride and ammonium sulfate. A phosphatic fertilizer may be at least one of calcium superphosphate, monoammonium phosphate, diammonium phosphate and double superphosphate. A potash fertilizer may be at least one of potassium sulfate and potassium chloride. The amino acid may be an amino acid organic fertilizer or corn processing leftovers. The medium trace elements comprise 0 to 1.5 percent of zinc, 0 to 3 percent of magnesium, 0 to 1 percent of iron, 0 to 1 percent of silicon, 0 to 0.5 percent of calcium and 0 to 0.5 percent of molybdenum. The adhesive is clayey soil. The fertilizer of the invention is a composite fertilizer combining chemical fertilizers and organic fertilizers. The fertilizer of the invention contains all nutrients, combines organic and inorganic matters, acts for a long term after being applied once and can improve soil of saline and alkaline lands and greatly improve corn yield.

The invention relates to a special organic and inorganic compound fertilizer for a lawn and a preparation method thereof. The preparation method comprises the following steps of: fermenting and decomposing sludge, edible fungus residues and a microbial fermentation fungal agent and then adding an inorganic fertilizer to produce the special organic and inorganic compound fertilizer, the nutrient content of which meets the nutrient requirement of the lawn. The special organic and inorganic compound fertilizer has long fertilizer efficiency, uniform nutrient supply and organic and inorganic combination, ensures the lawn quality and improves the soil fertility.

A macro-porous konjak gel is produced by: dissolving konjak powder into distilled water, stirring to form uniform gel, adding inorganic and stirring uniformly, regulating pH value, reacting at controlled temperature for certain time, cooling and settling, soaking and cleansing with distilled water to make water be neutral, freezing gel and melting repeatedly to obtain dry products. Its process is simple, and no organic solution is needed. It has uniform macro-porous structure, high mechanical strength, quick water absorbing ability, good biocompatible and biodegradable, so it can be used in biochemical, medical, agricultural and fine chemical industries.

The invention discloses a biological organic fertilizer for improving the stress resistance and the output of paddy rice and a preparation method thereof. The biological organic fertilizer comprises the following components: an organic mixture adsorbed with a composite microbe liquid preparation, an organic substance, a Bacillus subtilis inoculum, a Bacillus licheniformis inoculum, a Saccharomyces cerevisiae inoculum, a Rhodopseudomonas palustris inoculum, Lactobacillus plantarum and Lactobacillus acidophilus. The biological organic fertilizer of the invention is rich in beneficial microbe florae and major and trace elements needed by the growth of various crops, so the ecological florae and the trace elements of soil can be supplemented and adjusted, phosphor dissolving and potassium releasing capabilities of soil are enhanced, effective nutrients can be strongly decomposed, converted and synthesized, the fertilizer utilization rate is improved, physical and chemical properties of soil are improved, the granular structure formation is promoted, hardened and morbid soil is restored, the soil fertility is increased, various soil-borne diseases are inhibited, the growth and the fructification of the crops are promoted, and the stress resistance and the output of the crops are substantially improved.

The invention belongs to the technical field of agricultural environment conservation and repair, and particularly discloses a conditioner for repairing farmland soil polluted by heavy metals and a preparation method. The processed raw materials such as quick lime, zeolite, sepiolite and calcium magnesium phosphate fertilizer are uniformly mixed proportionally, so as to obtain the conditioner. The conditioner provided by the invention is reasonable in formula, the method is feasible, the operation is simple, and the conditioner integrates the functions of repairing soil with heavy metal pollution, regulating and controlling the soil acidity and alkalinity, and the like, enables the effective state cadmium and lead in polluted farmland to be reduced by 22.4%-31.4% and 26.3%-43.5% respectively, enables the contents of cadmium and lead in rice to be reduced by 33.2%-38.9% and 29.4%-44.6% respectively, the pH of soil to be increased by 0.16-0.27 and the yield of rice to be improved by 3.6%-6.3%, and is applicable to various farmland soil seriously polluted by heavy metals and seriously acidified.

The invention provides a synergistic compound fertilizer and a production method thereof. The production method comprises the following steps: firstly producing an alginic acid solution through an enzymatic hydrolysis method, mixing the alginic acid solution with inorganic raw materials according to a certain proportion, granulating through a high tower, and drying by a drum drying machine so as to get a finished product. The content of alginic acid in the product, namely a compound fertilizer synergist provided by the invention is 0.3%-20%, and the total content (calculated by N, P2O5 and K2O) of the inorganic nutrients is 25%-80%. The synergistic compound fertilizer provided by the method disclosed by the invention can significantly improve the quality of crops, is conductive to growth of root systems of the crops and has an important significance in the aspects of improving an ecological environment of farmland, easing the disproportionality of the fertilizer and the like.

The invention provides a redbed sandstone slope raw surface artificial soil preparation method, which prepares the artificial soil with raw material components including redbed sandstone rock, redbed shale rock, compound containing silkworm excrement and / or wormcast and / or algae residue, peat, straw, livestock and poultry manure, cement, lignosulfonate, high water-absorbent resin and fertilizer which are effectively mixed under certain conditions. The preparation method has significant effects in speeding up the formation of redbed sandstone slope raw surface artificial soil aggregate structure, increasing the water and fertilizer-keeping performances of the soil, improving the physical and chemical properties of the soil and promoting the plant growth and development.

The invention relates to a red mud soilification repairing agent and an application method thereof, and belongs to the technical field of ecological restoration of a red mud yard. Main raw materials of the repairing agent are industrial and municipal solid wastes and agricultural waste biomass powder, and raw materials are wide in sources and low in prices. By evenly ploughing the repairing agentand red mud, and then watering and ripening, the red mud soilification improvement can be realized in a short time, so that the red mud has resistant crop growth conditions and the natural ecologicalenvironment of the red mud yard and its surroundings can be improved. The technique has the advantages of simple application method, small engineering quantity and low cost.

The invention discloses a saline-alkaline soil conditioner. The saline-alkaline soil conditioner comprises, by mass, 30-55% of a red bayberry juice, 10-25% of calcium nitrate, 5-15% of fulvic acid, 1-3% of composite microelement fertilizer, 0.5-2% of rooting powder and the balance water. The multifunctional saline-alkaline soil conditioner with pH less than 7 can neutralize alkaline soil, contains active groups and natural organic material special function groups for reducing soil harmful ion-caused soil and plant damage through adsorption and exchange, and realizes saline-alkaline soil improvement through synergism of all ingredients. Compared with the traditional saline-alkaline soil conditioner, the saline-alkaline soil conditioner provided by the invention has the characteristics of multiple functions, environmental friendliness, low price and production and use convenience.

The invention discloses a fertilizer with biological ferment and a preparation method and a use method thereof. The fertilizer includes activator and nutrient, the activator is dry powder preparation of protein raw materials, water-soluble nitrogen, water-soluble phosphorus, water-soluble kalium and strain mixed fermentation products, and the nutrient is dry powder preparation of amino acid type raw materials, mineral composition type raw materials, trace element type raw materials and strain mixed fermentation products. The fertilizer can be applied by the step of primarily adding the activator into a simple fermenting container for fermentation and adding the nutrient for fermentation later. The invention can be suitable for various types of crops, can obtain the satisfactory effect after the application and has 10 times of the application effect of the traditional biological ferment fertilizer, and is beneficial to the massive popularization because the dry powder preparations with two components are suitable to long distance transportation and operations of post dry powder preparation mixing and fermentation are simple and easy.

The invention relates to the technical field of soil improvement, and concretely discloses a saline-alkaline land soil conditioner, and a preparation method and an application thereof. Raw materials of the conditioner comprise 400-600 parts of a biomass decomposed material, 150-242 parts of a pyroligneous liquor, 200-300 parts of charcoal powder, 4-10 parts of urea and 2-10 parts of a microbial agent. All the components are synergistically combined, so the conditioner contains abundant organic matters, provides favorable conditions for crop growth, can improve the physical and chemical properties of the soil and slowly release nutrients, improves the fertilizer utilization rate and the water holding capacity of the soil, effectively reduces the pH value of the soil and the salt content ina soil solution, delays accumulation of salt in the surface soil, and has a good improvement effect on saline-alkaline land soil.

The invention discloses a dairy manure biological organic fertilizer which is prepared from dairy manure, straws, a compound culture and a compound fermentation enzyme. The invention also discloses a preparation method of the organic fertilizer. The preparation method comprises the following steps: crushing and uniformly mixing dehydrated dairy manure and straws and performing pile fermentation; uniformly spraying the compound culture and the compound fermentation enzyme for fermentation; introducing oxygen at a fixed time; detecting the temperature of the pile fermenting fermented material; turning the pile fermenting fermented material; and then aging the fermented material to obtain the organic fertilizer. By adopting various microorganisms to ferment the dairy manure to produce the biological organic fertilizer, pathogenic bacteria can be killed and quickly deodorized by means of a fermenting action of the microorganisms; then, the biological organic fertilizer disclosed by the invention is rich in nutritional components needed for growth and development of crops, and can also serve as a soil conditioning agent, so that phenomena of soil agglomeration and salinization are effectively improved. The dairy manure biological organic fertilizer disclosed by the invention is fast and full to decompose, the fermentation time is shortened, the production cost is favorably lowered, and industrial production is facilitated.

The invention relates to a bone meal containing fertilizer and a preparation method therefor, and belongs to the technical field of fertilizer. The bone meal containing fertilizer is prepared from the following raw materials in parts by weight: 8-13 parts of bone meal, 6-10 parts of humic acid, 5-8 parts of distiller's grains, 7-12 parts of cassava residues, 5-10 parts of edible fungus residues, 47-55 parts of livestock manure, 3-5 parts of orange peel, 0.5-1 part of expanded vermiculite, 20-25 parts of crop stalk power, 3-5 parts of potassium chloride and 4-6 parts of superphosphate. The prepared fertilizer has comprehensive nutrients, and has stable and long-lasting fertilizer efficiency. By applying the fertilizer to crops, the crop production cost is reduced; the crops are promoted to mature early; the crop quality and the soil properties are improved; the formation of a soil granular structure is promoted; the soil is enabled to become soft; the soil structure is improved; and the soil fertility is also improved.

The invention belongs to the field of a fertilizer, in particular to a potassium humate compound fertilizer and a preparation method thereof. The potassium humate compound fertilizer is prepared by mixing urea, potassium humate, monoammonium phosphate, ammonium chloride, calcium powder and bentonite with magnesium sulfate, zinc sulfate and medium / trace elements. The potassium humate compound fertilizer granulated by using a steam drum physical agglomeration method and the preparation method of the compound fertilizer have the advantages that the prepared potassium humate compound fertilizer has large particle size and high strength and does not agglomerate; the capabilities of water and fertility retention, heat preservation and ventilation of the soil are enhanced; the soil structure is improved; the soil fertility is increased; the problems of reduced soil fertility, environmental pollution, soil hardening, nutrition unbalance and stress resistance of crops are solved; the utilization rate of the fertilizer is improved; the defects of low fertilizer efficiency, insufficient nutrition utilization, overproof pesticide residue, severe nitrate accumulation and heavy metal pollution are overcome; the sustained-release effect against pesticide is realized; the agroecological environment is protected; and the efficiency, yield and crop quality are improved.

The invention discloses a soil granular structure promoting synergist as well as a preparation method and an application of the soil granular structure promoting synergist. The soil granular structure promoting synergist consists of three granules which are different in raw material component and efficacy and also have different functions on different parts of soil. Raw material A granule is capable of absorbing clay particle mineral substances and the like in the form of an organic colloid to form granules; bentonite in raw material B granule swells in water to squeeze soil granules, which is favorable for the formation of a granular structure; and raw material C granule rapidly swells in water to squeeze soil granules to form a granular structure and simultaneously promote the growth of a plant root system and enhance the formation of the granular structure. The soil granular structure promoting synergist is capable of promoting the formation of the soil granular structure from the physical, chemical, biological and biochemical points simultaneously with good effect. An investigation in soil granules in a plough layer shows that the soil granular structure promoting synergist, after being used for improving soil, can enhance soil granules, is remarkable in effect and has a bright application prospect.

The invention discloses a method for processing a composite microbial fertilizer, which comprises the steps of preparing a culture medium, preparing a composite strain, activating and culturing and the like. The culture medium is mainly prepared from chicken manure, bean pulp and wheat bran, and is subjected to fermentation culture through various functional microorganisms, so that a fertilizer which is rich in various beneficial microorganisms and organic matter components is formed. The fertilizer can improve soil, meet the production requirement of organic food and enhance the drought resistance, disease resistance and pest resistance of crops.

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 discloses a microorganism-enzyme powdery composite biological preparation for promoting crop yield increase. The composite biological preparation is composed of, by weight, 30% of multiple microbial agents, 21% of multiple biological enzyme preparations, 25% of a microbial nutritional agent, 7% of seaweed, 3% of Fucus plant active ingredients, 3% of sodium humate, 2% of mordenite, 2% of dolomite and the balance moisture. The invention provides the microorganism-enzyme composite biological preparation for promoting high quality and high yield production of crops, and the composite biological preparation is formed by compounding of pure natural preferred strains and a variety of biological enzymes. Integrating the advantages of inoculants and enzyme preparations, the composite biological preparation has the functions of improving the soil structure, antagonizing soil pathogenic bacteria, fixing nitrogen, and dissolving phosphorus and potassium, releases iron, magnesium, manganese, zinc, sulfur, boron, calcium, silicon and a variety of medium trace elements in soil, balances absorption of nitrogen, phosphorus and potassium, removes fertilizer damage, secretes a variety of bioactive substances, enhances crop stress resistance, and can reach the effects of enhancing the yield and quality of crops.

The invention discloses an organic-selenium-enriched microorganism organic composite fertilizer and a preparation method thereof. The organic-selenium-enriched microorganism organic composite fertilizer comprises the raw materials in parts by weight: 40-60 parts of selenium-enriched bombyx mori, 40-60 parts of selenium-enriched plant waste, 40-60 parts of selenium-enriched edible mushroom waste, 40-60 parts of minerals, 20-30 parts of vitamins and 1-10 parts of a composite fungicide. The organic-selenium-enriched microorganism organic composite fertilizer can supply enough minerals such as organic selenium and beneficial substances such as microorganisms and probiotics to the growth of crops; meanwhile, the fertilizer can improve the soil, prevent diseases, and realize sterilization; a large amount of waste is turned into treasures, so that social and natural resources are saved, the environment is protected, and cyclic economy is realized. The organic-selenium-enriched microorganism organic composite fertilizer is one of the best fertilizers for producing pollution-free food, green food and organic food.

The invention discloses an ecology and environment-friendly soil improvement agent, which is prepared from the following raw materials in parts by weight: 15-25 parts of ore soil filler, 7-11 parts of coal gangue, 8-10 parts of straw, 10-20 parts of mixed grass meal, 3-5 parts of compound microorganisms, 5-7 parts of humate, 8-12 parts of excrement of livestock, 4-6 parts of desulfurized gypsum, 6-8 parts of bamboo charcoal powder and 5-7 parts of trace element additives. The soil improvement agent provided by the invention can effectively overcome the imbalance of nutrient elements in soil, improve soil fertility, loosen the soil, improve fertilizer efficiency, increase the contents of organic matters and nutrients, loosen hardened soil, accelerate a process of raw soil ripening and improve or recover land productivity; furthermore, industrial and agricultural wastes are used as most of the raw materials, so that the soil improvement agent is environmentally-friendly and safe; furthermore, the preparation method provided by the invention is lower in material cost, easy in obtaining of raw materials, simple in technology and easy to operate and in realization of industrial production, thus having higher practical value and a good application prospect.

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 belongs to the technical field of a special biofertilizer for tobaccos, and relates to a no-pollution organic biofertilizer capable of inhibiting continuous cropping obstacle of flue-cured tobaccos. The organic biofertilizer is prepared by carrying out secondary biofermentation on the following raw materials in parts by weight: 5-8 parts of EM soil conditioner, 60-63 parts of wormcast (cattle), 0.5-1 part of EM stock solution and 34.5-28 parts of chlorine-free water. The invention has the advantages of high fertilizer efficiency, no adverse or side effect on soil and no pollution, can improve the structure and water retentivity of the soil, enhances the anti-disease capacity of flue-cured tobaccos, enhances the photosynthesis of flue-cured tobaccos, greatly improves the quality of tobaccos, and can obviously inhibit continuous cropping obstacle of flue-cured tobaccos. The invention has wide market prospects and good social and economic benefits in flue-cured tobacco production.