251results about How to "Eliminate compaction" patented technology

A composite microbial preparation is prepared from hay bacillus (35-45%) lichen bacillus (25-35%) and thermofat bacillus (25-35%) through inclulating, culturing, proportional mixing, and culturing again. A microbial leaven is prepared from said composite microbial preparation through adsorption, press filter, breaking and baking. A microbial fertilizer is prepared from said composite microbial preparation, mud, peet, dung and dropping of chicken and livestock, distiller's grain, powered coal ash, straw or stalk, and city refuse through fermenting.

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 discloses microbial organic fertilizer having a saline-alkali soil improvement function. The microbial organic fertilizer is prepared by taking algae, straws and manure as raw materials by means of a composite microbial two-step fermentation process. The microbial organic fertilizer has functions of microbial fertilizer, organic fertilizer and algae fertilizer and is rich in algae functional active ingredient and a great amount of probiotics and capable of effectively adjusting balance of microorganisms in soil, decomposing organic or inorganic components such as organic matters, minerals and the like in the soil, eliminating caking, sanding, salting and the like of the soil caused by abused application of chemical fertilizer, effectively improving the soil, improving the stress resistance of crops and improving the productivity of crops; furthermore, the microbial organic fertilizer can promote the release of organic matters in the soil, improve the physical and chemical structure of the salted soil, improve the clustering and permeation performance of the soil, improve the fertility of the soil and improve the grain productivity increasing capacity of the saline-alkali soil and is an excellent saline-alkali soil improvement agent and crop growth accelerator.

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 belongs to the technical field of manure, and in particular relates to special organic microbial bacterial manure for garlic and a production method for the special organic microbial bacterial manure for garlic. The special organic microbial bacterial manure for garlic comprises the following components: furfural residue, mushroom bran, composite microbial agent, ammonium hydrogen carbonate, calcium superphosphate, potassium chloride, zinc sulfate, plant ash, potassium sulfate, animal manure, potassium humate, rice hull powder and rape seed cakes. The special organic microbial bacterial manure for garlic, prepared by adopting the method disclosed by the invention, contains a large amount of nutrients required for the growth of garlic and various trace elements and amino acids, and has the effects of efficiently, synergistically and enduringly improving soil, improving the fertility, resisting diseases and the like; in addition, soil probiotic floras are added into organic matters, so that the nutrients can be better absorbed and utilized, and the micro-ecological environment of the soil can be continually repaired. Through testing, the special organic microbial bacterial manure for garlic, disclosed by the invention, can be used for effectively improving the yield of garlic by 20-30%.

The invention discloses a peanut special microbial fertilizer and relates to the technical field of crop special fertilizers. Raw materials of 5-20 parts of compound microbial additives, 5-25 parts of turfy soil, 20-50 parts of urea, 5-25 parts of calcium magnesium phosphate fertilizers, 5-30 parts of monoammonium phosphate, 10-35 parts of potassium sulphate and 1-10 parts of bentonite are utilized, and the raw materials are subjected to stirring mixing by a mixer, granulation, drying and screening to obtain the peanut special microbial fertilizer. The peanut special microbial fertilizer has the advantages that the soil environment can be improved, the soil hardening can be eliminated, effects of inhibiting germs and resisting diseases can be achieved, the nutritions are comprehensive, and peanut yield and quality can be improved.

An organic-inorganic microbiological water-soluble fertilizer specially used for grape is prepared from following raw materials: potassium fulvate, potassium nitrate, urea, monoammonium phosphate, polyaspartic acid, potassium sulfate, zinc sulfate, ferrous sulfate, borax, a microbiological preparation, copper sulfate, manganese sulfate and EDTA. A preparation method of the fertilizer includes following steps: mixing powdery potassium fulvate, the powdery microbiological preparation and powdery polyaspartic acid uniformly to obtain a mixed material; processing the mixed material at constant temperature to obtain a material A; respectively crushing the urea, the potassium nitrate, the potassium sulfate and the monoammonium phosphate with mixing uniformly to obtain a material B; crushing the zinc sulfate, the manganese sulfate, the ferrous sulfate, the borax, the copper sulfate and the EDTA with mixing uniformly to obtain a material C; mixing uniformly the material A, the material B and the material C to obtain a product. The fertilizer is complete in nutrition, is reasonable in formula, allows crops to absorb easily, has a significant yield-increasing effect, contains organic substances, inorganic substances, bacteria and medium-and-trace elements, is environmental-protective and is free of pollution, and can protect ecological environment and improve farmland soil.

The invention discloses a liquid bacterial agent for rooting, which comprises the following raw materials by weight parts: 20-80 parts of concentrated amino acid fermented liquid, 15-30 parts of urea, 5-20 parts of potassium fulvic acid, 10-20 parts of alginic acid, 5-15 parts of chitosan, 10-30 parts of bacillus subtilis, 5-20 parts of Alpha-pimacol, 10-35 parts of sodium nitrophenolate, 1-4 parts of indole butyric acid potassium, 5-15 parts of 5-nitrate and 10-20 parts of calcium nitrate. According to the invention, the liquid bacterial agent contains various high-activity strains including bacillus laterospor, bacillus licheniformis, bacillus subtilis and the like and dozens of high-purity nutritional ingredients. The liquid bacterial agent has super strong activity, and can quickly reach nutrient deficiency parts and bacteria infection parts of crops after being used so as to quickly complement the deficient elements, and can split mycelium and spore and remove soil-borne diseases so as to allow the crops to be quickly back to health. The liquid bacterial agent has the advantages of good water solubility, strong absorption ability, non-public hazard, no residue and no volatility after being used, and can not cause poison damage for the crops in the greenhouse.

The invention relates to a liquid fertilizer, and specifically relates to a water soluble liquid fertilizer containing macroelements, wherein anaerobic fermentation liquid is taken as the basic liquid of the fertilizer. In the prior art, the liquid fertilizer production has the disadvantages of large water consumption, high production cost, and single functional product. In order to solve the problems mentioned above, a formula of a water soluble liquid fertilizer is designed, the fermentation liquid is taken as the basic liquid, macroelements (N, P, and K), medium elements (Mg and Ca), microelements (Zn, Fe, B, Mo, and Mn) and organic substances are compounded and added, thus the liquid fertilizer has a comprehensive nutrients and is capable of supplying sufficient nutrition, moreover, the water resource is saved, and the raw material cost is reduced. The anaerobic fermentation liquid is subjected to secondary fermentation and is fully aged so as to kill the harmful bacteria and insect eggs, while at the same time the original active substance and beneficial bacterium colonies are preserved. The fertilizer can release the soil fertility, can be easily absorbed by the plants, is capable of promoting the plant growth, has the advantages of high nutrient content, comprehensive functions, environment-friendliness, low production cost, and user-friendliness, and is capable of increasing the crop yield and improving the agricultural product quality after long term use.

The invention relates to a soil conditioner and preparation and application methods thereof. The soil conditioner is prepared from the following ingredients in percentage by weight: 30% to 35% of overrotten organic fertilizer, 35% to 40% of fruit tree branch charcoal, 14.5% to 19.5% of oyster shell powder, 8% of pyroligneous liquor, 6.0% of natural humus acid, and 1.5% of titanium oxide. The conditioner has effects of loosening soil, improving soil acidification and removing soil hardening, and has effects of improving water and nutrient retention capacity of soil, supplementing trace elements in soil calcium and magnesium and reducing crop diseases and pests. The soil conditioner can replace slaked lime, an organic fertilizer and the like as the soil conditioner to be applied to the planting industry.

The invention provides a nutritional bio-fertilizer containing a plant life activin and a preparation method thereof. The nutritional bio-fertilizer is prepared from the following raw materials in parts by weight: 18-20 parts of monocotyledonous and dicotyledous plant enzyme biological extracting solution, 18-20 parts of plant flavone biological extracting solution, 18-20 parts of kelp mineral biological extracting solution, 18-20 parts of plant nucleic acid biological extracting solution, 18-20 parts of plant alkaline polysaccharide biological extracting solution, 1-3 parts of acetic acid bacteria, 1-3 parts of saccharomycete, 1-3 parts of lactic acid bacteria, 6-8 parts of saccharide and drinking water in an amount of 6-8 times that of saccharide. The preparation method comprises the following steps of: 1, feeding the raw materials into a mixer for mixing and feeding the mixture into a fermenting vessel to obtain a mixed biological extracting solution; 2, preparing biological fluid processed with honey; 3, brewing an aerobic biological fermenting material; and 4, performing anaerobic bio-fermentation to obtain the nutritional bio-fertilizer. The bio-fertilizer has the advantagesof activating soil, eliminating soil hardening, reducing the consumption of pesticides and chemical fertilizers and enhancing fruit quality.

The invention discloses a producing technology for high-efficient bio-organic fertilizer through mixed fermentation combining bran, straw, vinasse and seaweed. The bran and the straw are used as raw materials and the vinasse, the seaweed and the like are supplemented. The high-efficient bio-organic fertilizer is obtained through the two-stage fermentation technology of the bio-leaven. The resource utilization level of the technology is high, the large-scale industrial production is facilitated, realizing of resource utilization of the bran, the straw and the like is facilitated, and the problems that the existing high-efficient bio-organic fertilizer is short and the agroecological environment is polluted. The product possesses the effects of biological bacterial fertilizer, organic fertilizer and seaweed fertilizer, the microbial balance in soil can be regulated effectively, the organic constituent and the inorganic constituent in organic matter, mineral substance and the like in the soil can be resolved, soil hardening, desertification, salinization and the like caused by abuse of chemical fertilizer year in year out are removed, the soil is improved effectively, the crop yield is improved, the special effects of improving crop quality and improving the stress resistance of the crop are achieved and the action period of the product is long; the high-efficient bio-organic fertilizer is the ideal fertilizer for developing green-ecological agriculture.

The invention discloses a special fertilizer used for assisting yield increase of paddy rice. The special fertilizer comprises the following raw materials: a rapeseed cake, fermented pig manure, urea, ammonium sulfate, calcium nitrate, diammonium phosphate, potassium chloride, magnesium sulfate, zinc sulfate, sodium selenate, ammonium molybdate, copper sulphate and a soil conditioner. The soil conditioner comprises the following components: bentonite, perlite, citric acid, oxalic acid, nitrohumic acid, a phosphate-dissolving bacterium, dicyandiamide, N-butylthiophosphoryl triamide, polyethylene glycol and acrylamide. The special fertilizer used for assisting yield increase of paddy rice in the invention has a scientific formula and reasonable nutrients; and when applied in plantation of paddy rice, the special fertilizer can improve the utilization rate of fertilizers, resist lodging and insect attack, increase the output of paddy rice, improve the quality of paddy rice, enhance physical and chemical properties of soil and prevent soil hardening.

The invention discloses a novel process for preparing bioorganic fertilizer through wheat straw via recycling. According to the process, the recycling degree is high, large-scale industrial production is easy, wheat straw recycling is achieved easily, and the two problems that at present, straw burning pollutes the environment and efficient bioorganic fertilizer is in shortage are solved. The fertilizer has the effects of bioorganic fertilizer and the effects of seaweed fertilizer, is rich in seaweed functional active ingredients and a large number of probiotics, can effectively regulate balance of microorganisms in soil, decompose organic materials, mineral substances and other organic or inorganic components in the soil, eliminate soil hardening, desertification, salinization and other problems caused by fertilizer abusing all year round, effectively improve the soil and improve the crop yield and has the special functions of improving crop quality and improving crop stress resistance; in addition, the fertilizer has long action period, and is ideal fertilizer for developing green ecological agriculture.

The invention discloses a bioanalysis preparation technique of a biological organic fertilizer by chicken manure. High-efficient and green chicken mature fermenting biological organic fertilizer is developed through a mixed bacteria aerobiotic two-step fermenting technique, wherein an one-step fermenting flora comprises aspergillus, thermophilic sporotrichum, saccharomycetes, bacillus subtilis, thermophilic heterotrophism ammonia oxidizing bacteria; a two-step aerobiotic fermenting flora comprises EM fungicide, azotobacter chroococcum, and bacillus licheniformis. The technique adopts multi-bacterium mixing fermentation; through combination of metabolic capabilities, the complex metabolism which is hard to complete by single culture is completed; through synergic fermentation between microorganisms, the chicken mature is effectively transformed, the hygienic index reaches the national standard, and the product decomposition and growth promoting index are significantly promoted. The fermenting technique is simple and high-efficient, the deodorization and sterilizing effects are good; besides, the production cost is low, and the technique is easy to carry out industrial scale production.

The invention provides a preparation method of soil moisturizing bio-fertilizer. The composite microorganism bactericide adopted in the invention comprises an A group bactericide and a B group bactericide, and fermentation preparation is completed by smashing straws, composting and secondary piling fermentation. Compared with the prior art, the invention has simple preparation technique without needing large mechanical equipment, simple and practical method, wide raw material source, and low cost, solves the difficulty in straw treatment, and realizes recycling of resources; the inventive soil moisturizing bio-fertilizer has strong water absorptivity which is increased by over ten times, good moisture retention property to soil, and can eliminate soil hardening and promote root system to grow, improve content of organic matter in soil by 1-1.5 times, reduce dosage of fertilizer by over 35% resulting in planting in the next season without applying fertilizer, adjust soil micro-ecological environment, and reduce occurrence of plant diseases and insect pests and has no putrefactive odor.

The invention provides probiotics used for agricultural planting and a preparing and using method thereof. The problem that in the prior art, chemical fertilizer, pesticides, hormones and the like are used for a long time, and consequently the farmland ecological environment is destroyed is solved. The probiotics used for agricultural planting is mainly composed of trichoderma strains, saccharomycetes, bacillus subtitles, photosynthetic bacteria and actinomycete. The probiotics used for agricultural planting has the beneficial effects that soil is improved, hardening is eliminated, soil-borne diseases are inhibited, the continuous cropping barrier is avoided, the disease resistance of plants is improved, the fertilizer utilizing rate is increased, the fertilizer using amount is reduced by 30-50%, photosynthesis is enhanced, crop roots are developed, the emergence rate is increased, seedlings are regular and strong, the yield is increased, quality is improved, pesticide residues are reduced, and the heavy metal content is reduced.

The invention discloses a phosphate inorganic casting binder suspension curing agent and a preparation method thereof. The preparation method comprises the following steps of: adding organic resin to an alcoholic solvent; stirring to be fully dissolved and adding organic acid; stirring to be fully dissolved and then adding powder magnesia; and evenly stirring and dispersing to prepare the suspension curing agent. The invention also discloses the application of the curing agent to the foundry industry. The preparation method of the phosphate inorganic casting binder suspension curing agent is simple and adopts easily obtained raw materials with lower cost. The curing agent has the excellent performances of high efficiency, suspension rate and solid content, free toxicity, moderate reaction speed with the binder, and the like; a casting sand mould bonded by utilizing the curing of the curing agent and the organic binder has high sintering strength and stable sintering performance without a dust flying phenomenon in a sand-mixing process or generating dust pollution and is easy to popularize and apply in the foundry industry.

The invention discloses a wood-vinegar-containing biological compound fertilizer. The biological compound fertilizer is mainly prepared from the following raw materials in parts by weight: 10-15 parts of microbial inoculant, 20-30 parts of urea, 5-10 parts of diammonium phosphate, 10-20 parts of potassium chloride, 4-8 parts of calcium magnesia phosphate fertilizer, 10-15 parts of biochar, 1-3 parts of nano titanium dioxide, 0.5-1.5 parts of zinc sulfate, 0.2-1 part of copper sulfate and 2-5 parts of wood vinegar. The biological compound fertilizer is capable of enhancing the utilization ratio of the fertilizer, saving the raw materials and increasing the crop yield, and is also capable of supplying comprehensive nutrients required by crop growth, regulating plant growth and development, killing and resisting bacteria, expelling pests, effectively lowering the disease and pest morbidity and reducing the pesticide use.

The invention discloses a multi-use functional fertilizer and a preparation method thereof, and belongs to the technical field of fertilizers, and the multi-use functional fertilizer can be used for solving the problems of short fertilizer effect, single fertilizer effect, single function and easiness in causing land hardening and desertification. The fertilizer is prepared by fermenting nitrogen phosphorus and potassium, Chinese herbal medicine ingredients, sophocarpidine, humic acid, medium trace elements, biological bacteria and polypeptides, wherein the medium trace elements are calcium, magnesium, sulfur and silicon as well as iron, boron, manganese and zinc, and have the same amount; the Chinese herbal medicine ingredients are platycodon grandiflorum, lycoris radiate, nerium indicum, equisetum arvense, equisetum ramosissimum, elderberries, ailanthuses, xanthium sibiricum and polygonatum sibiricum. According to the fertilizer, the phenomena of soil hardening, deterioration, dysbacteriosis and the like caused by multi-year application of chemical fertilizers can be reduced and the root nutrient adsorption, transportation, storage and conversion capability is facilitated; after the fertilizer is applied, the yield of vegetables and the like can be increased by 20%-30%, the yield of fruit trees can be increased by 10%-20%, and the yield of economic crops such as peanuts and cotton can be increased by 10%-15%.

The invention discloses a special disease-resistant and drought-resistant yield-increasing fertilizer for large peaches. The fertilizer comprises the following components: soy meal, dry duck manure, urea, ammonium chloride, calcium nitrate, diammonium phosphate, potassium chloride, magnesium sulfate, zinc sulfate, sodium selenate, ammonium molybdate, copper sulfate, zeolite, vermiculite, fly ash, malic acid, tartaric acid, sodium humate, phosphate solubilizing bacteria, cyanoguanidine, N-butyl thiophosphoric triamide, polyacrylamide, brassinolide and gibberellin. The special disease-resistant and drought-resistant yield-increasing fertilizer for large peaches contains various nutritional components, is reasonable in formula and suitable for the growth of large peaches, and is used for a peach planting process, various nutrients can be fully utilized, the disease resistance and drought resistance of large peaches are improved, and the quality of large peaches is improved.

The invention relates to a special fertilizer for sweet potatoes. The special fertilizer comprises the following raw materials in parts by weight: 18-25 parts of urea, 12-18 parts of ammonium chloride, 8-12 parts of monoammonium phosphate, 6-10 parts of calcium superphosphate, 35-40 parts of potassium chloride, 10-12 parts of sodium humate, 5-8 parts of grondverbeteraar and 1-3 parts of a PH buffer agent, and the raw materials are mixed together according to the ratio. Compared with the prior art, the special fertilizer blends nutrient components according to the demands of sweet potatoes, the nutrient utilization rate is high, the disease resistance is improved, and the yield of the sweet potatoes is increased.

The invention discloses an ecological organic fertilizer by utilizing enzyme microorganisms for fermenting waste bacteria sticks and a method for preparing the ecological organic fertilizer. The organic fertilizer is prepared from, by weight, 35-45 parts of carbonization bacteria stick powder, 30-40 parts of humic acid raw powder, 10-20 parts of livestock excrement rotten powder, 6-10 parts of amino acid raw powder, 2-10 parts of starch and 1.5-2.5 parts of kelp oligose. Enzyme microorganisms and EM bacteria are added during preparation. By means of the enzyme microorganisms, waste bacteria sticks are mixed into livestock excrement for fermentation, the fermentation time is shortened, the carbon nitrogen ratio in the fertilizer is more reasonable, waste materials are changed into things of value, the environment is protected, the cost is decreased, the fertilizer efficiency is enhanced, and economic and social benefits are obvious.

The invention discloses a preparation method of a seaweed biological soil conditioner with a saline and alkaline land improvement function. The soil conditioner is prepared with a compound microbial fermentation technology from raw materials including Enteromorpha, kelp and oyster shell powder, has the functions of seaweed fertilizer, microbial fertilizer and organic fertilizer, contains rich seaweed functional active ingredients and large quantities of probiotics, can effectively regulate microbial balance of soil, decompose organic or inorganic constituents such as organic matters, mineral substances and the like in the soil, eliminate soil hardening, desertification, salinization and the like caused by abuse of chemical fertilizer all year round and improve the soil effectively, has the specific function of improving the stress resistance of crops, and improves the crop capacity; the soil conditioner can especially promote release of the organic matters in the soil, improves the physicochemical structure of salinity soil, improves the soil aggregate and permeability, improves the soil fertility, improves the grain yield increase capacity of a saline and alkaline land and is an excellent saline and alkaline land soil conditioner and a crop growth promoter.

The invention discloses a multi-function and multi-element water soluble solid concentrated fertilizer, which is characterized by comprising the following raw materials with portions by weight: 10 portions to 33 portions of carbonyl diamide, 10 portions to 30 portions of monoammonium phosphate, 15 portions to 35 portions of soluble sylvine, 0.2 portion to 5 portions of sodium pyroborate, 0.1 portion to 1 portion of manganous sulfate, 0.1 portion to 1 portion of copper sulfate, 0.1 portion to 1 portion of zinc sulfate, 0.1 portion to 1.5 portions of ammonium molybdate, 0.1 portion to 1 portion of rare earth and 0.01 portion to 0.5 portion of carboxyl cellulose. The invention has low cost and high nutrient, is practical, ecological and environment-friendly, improves soil fertility and is beneficial to promotion.

The invention provides a biological water flushing fertilizer. The biological water flushing fertilizer is prepared by mixing a microorganism strain and an organic fertilizer, wherein the microorganism strain is obtained by carrying out strain liquid fermentation on bacillus subtilis, brevibacillus laterosporu and bacillus mucilaginosus; the biological water flushing fertilizer is composed of the following components in percentage by mass: 10%-20% of the microorganism strain, 20%-30% of humic acid, 30%-60% of calcium nitrate or phosphorus nitrate, 5%-10% of boric acid, 5%-12% of magnesium sulfate, 5%-8% of ferrous sulfate, 1.5%-5% of organic matters, 2%-6% of sulfur powder, 0.5%-1.0% of bentonite and 1%-5% of an inductive agent. The preparation method comprises the following steps: liquid fermentation of the strain, adsorption of fermented strain liquid, and preparation of the biological water flushing fertilizer. According to the biological water flushing fertilizer, the nutritional value of fertilizer raw materials is obviously improved and the fertilizer effect is rapidly improved; the fertilizer utilization efficiency effect and the effect of preventing diseases and increasing the output are improved. Meanwhile, the soil physical and chemical properties are also improved; the hardening is eliminated, the soil is loosened, the pH value of the soil is adjusted and the soil structure is improved.

The invention relates to a novel method for extracting a seaweed intermediate by an enzyme process, which comprises the following steps: sufficiently cleaning and immersing dry Laminaria digitata, adding into an acidic solution, and stirring uniformly to obtain a mixture A; dissolving a composite acidic enzyme in water, and adding into the mixture A to perform primary stirring extraction, thereby obtaining a mixture B; dissolving an inorganic alkaline compound and a composite alkaline enzyme in water, and adding into the mixture B to carry out secondary stirring extraction, thereby obtaining the mixture C; and dissolving a preserving agent in water, adding into the mixture C, and stirring uniformly to obtain the seaweed intermediate. The method for preparing the seaweed intermediate is efficient, quick, mild, comprehensive, safe and harmless. Compared with the traditional acid-alkali extraction technique, the extraction efficiency is enhanced by 50% above, the algal polysaccharides content is enhanced by 50-100%, the alginic acid content is 3.5-4.0, the effect of the seaweed intermediate product is obviously enhanced, and all the effective components in the seaweeds are reserved in the product, thereby implementing complete-effect addition in deed.

The invention provides an additive for improving soil. Raw materials of the additive comprises a medicinal ore, structural characteristics of the medicinal ore and pharmacological action of the medicinal ore are used, at the same time, a theory of syndrome differentiation and treatment in Chinese medicine and a theory of system balance are combined, traditional Chinese medicines are applied to soil environmental management to improve the micro-ecological balance in the soil, so that soil hardening is improved while soil fertility and adaptability to the outside world are enhanced, and a problem of soil hardening is fundamentally solved.

The invention discloses a method for preparing liquid fertilizer for saline and alkaline land irrigation from biogas slurry. The comprehensive utilization value of the biogas slurry is remarkably improved through a three-time anaerobic fermentation process, high-valued and innocent treatment and resource utilization of the biogas slurry are achieved, the biogas slurry is used for agricultural development of saline and alkaline land, and the grain yield increase capacity of the saline and alkaline land is improved. The liquid fertilized prepared through the technology has a slight tart flavor, has no stink smell, and contains rich nutrient elements, amino acid, humic acid, auxin, hydrolase, vitamin, probiotics and other bioactive substances, wherein the index of the content of microorganisms reaches 109,000,000,000 / mL, and the pH ranges from 6.0 to 6.5. When the liquid fertilizer is applied to improvement in the saline and alkaline land, the physical and chemical structure of salinity soil can be remarkably improved, soil aggregate is increased, soil permeability is improved, soil fecundity is improved, and the grain yield increase capacity of the saline and alkaline land is improved. The liquid fertilizer is an excellent soil modifier and an excellent crop growth accelerant and is ideal fertilizer for saline and alkaline region soil improvement for grain yield increase.

The invention provides algal polysaccharide modified urea. The algal polysaccharide modified urea comprises the following components in percentage by weight: 0.1 to 1.2 percent of algae extract, 0.015 to 0.18 percent of Gulur manna polysaccharide, 0.002 to 0.017 percent of fucoidin, 0.0001 to 0.0015 percent of algal active matter, 0.0001 to 0.0015 percent of algal antibiont, 98.6 to 99.7 percent of urea, and 46.01 to 46.53 percent of nitrogen. The invention also provides a preparation method for the algal polysaccharide modified urea. The algal polysaccharide modified urea can provide nitrogen required by crops, improve soil, improve the crumb structure of the soil, eliminate hardening, play a certain role in fertilizer conservation and slow release, prolong the fertilizer efficiency of the urea and enhance absorption of the crops so as to improve the yield and the quality of the crops, fruits and vegetables.