50results about How to "Good water retention and breathability" patented technology

A sort of material used for sand-binding vegetation renewing which consists of plant cellulose, microelements, fertilizer, water-absorbable resin and sand. Rainfall can filter into the sand sufficiently to make sure that seed can germinate and grow while in sunny day sand crusts to prevent water from excess evaporation. It is suitable for migratory dune immobilizing and vegetation renewing. The contradiction between chemical sand-binding and vegetation growth can be settled by this material.

The invention discloses a fulvic acid potassium chelating fertilizer, belonging to the technical field of agricultural fertilizers. The fulvic acid potassium chelating fertilizer comprises the following raw materials in parts by weight: 18 parts of chelating agent, 18 parts of heavy calcium carbonate, 20 parts of urea, 12 parts of ammonium sulfate and 8 parts of ammonium nitrate, wherein the chelating agent is made from copper sulfate, ferrous sulphate, zinc sulfate, manganese sulfate, boric acid, fulvic acid potassium, urea, ethylene diamine tetraacetic acid (EDTA) and the like. Strong complexing ability and rich nutrient substances of fulvic acid potassium are utilized in the invention by a scientific and simple method. The fulvic acid potassium chelating fertilizer has high fertilizer efficiency, meets growth need of crops, improves utilization ratio of the fertilizer, and reduces environmental pollution.

The invention relates to a seedling culture method by using interaction of two plant seedlings, which comprises the following concrete steps: seeding the seeds of one kind or two or more kinds of plants (interaction plants) and the seeds of a plant (target plant) which is planted in a seedling transplanting way together in the same hole of a seedling tray; after the seeding, covering the hole with a matrix; putting the hole in an agricultural film tunnel or greenhouse; after the seedling of the plant emerges, uncovering the film or opening the tunnel to train the seedling until the plant root system combines the matrix into a tight bowl body; removing the interaction plants by use of a selective herbicide or preventing jointing of the interaction plants by use of vernalization; and then lifting and transplanting the seedling. The invention enhances the strength of the bowl body by use of the root system of the interaction plants so as to prevent easy loosening of the bowl body, shortens the rejuvenation period after planting and realizes low production cost.

The invention discloses a volcanic gravel type flue-cured tobacco seedling substrate and a preparation method thereof. The preparation method of the volcanic gravel type flue-cured tobacco seedling substrate comprises the following steps: mixing the following materials in parts by weight: 2.5-4 parts of volcanic gravels, 2-3 parts of volcanic ash soil, 2-3 parts of corn stalks and 2-3 parts of rice husk, composting and thoroughly decomposing. The volcanic gravel type flue-cured tobacco seedling substrate disclosed by the invention is used for replacing the existing grass carbon-based seedling substrate, and tobacco seedlings cultured by using the volcanic gravel type flue-cured tobacco seedling substrate are similar to or partially superior to the tobacco seedlings cultured by the grass carbon-based seedling substrate on the aspects of the emergence rate, the growth and development of the tobacco seedlings and the like. Since the volcanic gravels and volcanic ash soil used for preparing the volcanic gravel type flue-cured tobacco seedling substrate can be directly obtained from the natural environment and moreover the straws, the rice husk and the like are waste resources, compared with substrate materials prepared from grass carbon and the like, the volcanic gravel type flue-cured tobacco seedling substrate has the advantages of abundant raw material storage capacity, low cost, no generation of wastes and the like and has relatively high social, economic and ecological benefits.

The invention provides a carbon matrix biogas urea tea tree fertilizer and a production method thereof. The carbon matrix biogas urea tea tree fertilizer is characterized by consisting of the following components in parts by weight: 20-30 parts of biological black carbon, 15-25 parts of biogas slurry, 5-8 parts of urea, 10-20 parts of biogas residues, 5-10 parts of organic matters, 5-8 parts of nitrogen (N), 3-5 parts of phosphorus (P2O5), 4-6 parts of potassium (K2O), 0.5-1 part of amino acid, 0.5-1 part of humic acid, 1-2 parts of wood vinegar, 0.01-1 part of beneficial fungicides, 0.5-1 part of a fertilizer controlled-release agent and 1-3 parts of forming aids, wherein the raw materials are put into water and are mixed and pelletized by using a pelletizing machine; the diameters of fertilizer granules are 2-8mm; after pelletizing, 1-2 parts of wood tar is emulsified and sprayed to the granular fertilizer. According to the carbon matrix biogas urea tea tree fertilizer, the biological back carbon adsorbs the biogas slurry or human and livestock urea and organic fertilizers to prepare a solid efficient tea tree fertilizer, the fertilizer effect lasts for a long time without loss, tea trees can sufficiently absorb nutrients, tea leaf growth is promoted, industrialization of the carbon matrix biogas urea tea tree fertilizer is achieved, the biogas slurry is effectively utilized, and ecological pollution in rural areas is reduced.

The invention belongs to the field of fungi cultivation, and relates to an efficient cultivation method of morchella, in particular to a morchella field cultivation bedding as well as a preparation method and a use method thereof. The morchella field cultivation bedding is capable of remarkably improving morchella yield, and is prepared from the following components in parts by weight: 40-45 parts of humus, 30-40 parts of wood chips, 8-15 parts of wheat bran, 2-8 parts of borax and 3.5-8 parts of FeSO4+KH2PO4. By means of improving soil in a way of adding bedding at the early stage of cultivation, the water retention and the air permeability are improved, the labor intensity is lightened, and the morchella yield is increased; the morchella field cultivation bedding has the characteristics of being less in input, high in benefit, quick in response and simple in operation, thus being an ideal and novel field cultivation bedding; the morchella field cultivation bedding is in accordance with the conditions of large-scale popularization and utilization, can improve the enthusiasm of planting the morchella of farmers, and has very wide application prospect in the production of the morchella.

The invention discloses a container nursery method of a horseradish tree, which includes seed treatment, sand bed pregermination, selection of a nutrition cup, preparation of a nursery matrix, seedlings transplanting in cup, seedling management, and nursery stock delivery. Through seed immersion and disinfection on the horseradish tree seeds, the sand bed pregermination is practiced; after the seeds are germinated, the seeds are transplanted in a non-woven cloth nutrition cup filled with the matrix; through the seedling management, qualified horseradish tree nursery stock is acquired. The container nursery method is convenient to take materials, simple in operation and low in cost; the horseradish tree seedling can be grown up by cultivating for 1-2 months, the horseradish tree seedling isdeveloped in root system and tidy and strong in growth; the nutrition cup is carried during the afforestation and roots are not injured; the survival rate and the growth amount of the afforestation of horseradish tree s can be improved; therefore, the container nursery method has good economic benefit, social benefit and ecological benefit.

The invention provides a medium for plantation of mushrooms and a preparation method. The medium comprises the following components: dried manure, plant straw, chitosan, Stevia rebaudiana residues, eggshells, shell powder, peptone, soybean meal, wheat bran, lime, attapulgite clay, diatomite, an additive, and a bacterial strain. The preparation method comprises the following steps: the additive is extracted at first, the additive and attapulgite clay are mixed and adsorbed, residual components are mixed and fermented, and the medium is obtained. The medium can provide sufficient nutrition for growth of mushrooms, also has good water retention and permeability, and provides a better growth environment for mushrooms.

The invention discloses a fertilizer special for aquatic plants for shrimp and crab culture. The fertilizer is prepared from, by weight, 20-40 parts of ammonium bicarbonate, 20-40 parts of potassium phosphate, 5-15 parts of monoammonium phosphate, 5-15 parts of potash magnesium sulfate fertilizer, 10-20 parts of composite coating agent, 1-6 parts of peanut cake, 1-6 parts of soybean protein powder, 2-12 parts of rape seed cake, 0.001-0.006 part of compound microorganisms, 1-4 parts of plant ash, 1-4 parts of zeolite powder, 2-10 parts of calcined clay, 5-12 parts of montmorillonite powder and 1-10 parts of kaolin. The fertilizer is prepared according to the fertilizer requirement rule of the aquatic plants for shrimp and crab culture, the aquatic plant soil fertility can be improved, the aquatic plant disease resistance can be effectively improved, the pond soil buffering property and aquatic plant stress resistance are improved, the cost is low, environmental friendliness is achieved, and the year-round growth demands of the aquatic plants can be met through only one-time fertilization.

The invention discloses a large-granularized seed coating agent for aerial sowing. The coating agent is mainly composed of starch, attapulgite, plant cellulose, superabsorbent resin and fine sand. The coating agent also contains fertilizers, plant hormones and trace elements. The invention has the advantages of effectively solving the contradictions between the coating and damage of the aerial sowing seeds and the coating and germination. Under the condition of 10mm rainfall, the seed germination rate is high and the later growth effect is good. After aerial sowing, the seeds can be buried in the sand under the action of wind erosion, which solves the problem of seeds drifting with the wind on the windward slope of sand dunes, and provides technical support for large-scale aerial sowing under difficult site conditions.

The invention provides a biochar-based organic special fertilizer for watermelons and a production method thereof. The special fertilizer is prepared from the following components in parts by weight:30-40 parts of biochar, 40-60 parts of organic materials, 6-8 parts of nitrogen (N2), 2-4 parts of phosphorus (P2O5), 6-9 parts of potassium (K2O), 10-15 parts of perlite, 1-2 parts of potassium sulfate, 1-2 parts of ammonium sulfate, 0.5-1 part of ammonium nitrate, 0.5-1 part of humic acid, 1.5-2.5 parts of wood vinegar, 1-2 parts of wood tar, 0.05-1 part of a probiotic agent, 0.5-1 part of a fertilizer controlled release agent, and 1-3 parts of a forming aid. The organic matters are solid livestock and poultry manure and decomposed organic plants with the water content of less than or equalto 40%. The preparation method comprises the following steps: carrying out high-temperature pyrolysis on crop straws to prepare biochar, adding the biochar and organic matters into a fermentation tank, carrying out mixed fermentation for 10-20 days, adding an ingredient granulator into the base material, granulating the mixture and finally spraying wood tar onto the granular fertilizer. The special fertilizer contains a large amount of organic nutrient elements, effectively utilizes waste resources, improves sandy soil, is suitable for planting watermelons, and improves taste and yield.

The invention relates to the technical field of animal breeding, in particular to an ecological breeding method of goats. The ecological breeding method of the goats comprises the following steps of goat house construction, ewe management, growth management, epidemic disease prevention and information management. A goat house is communicated with a flow guide layer and a compost pit through a filter screen type floor, so that the goat house is convenient to clean, goat manure is fully utilized to prepare organic fertilizer, the growth of goat farm vegetation is promoted, and environmental friendliness and sustainable development can be achieved; growth and development can be promoted through active ingredients of aromatic plants, body metabolism and immunity can be improved, and by the absorption of an ultra-fine pulverizer and microwave heating, the active ingredients are absorbed more sufficiently; a database is built for a goat farm for informatization management, the breeding level is continuously improved, and the breeding cost is reduced, so that consumers conduct source tracing query on mutton products, the quality of mutton are conveniently monitored and supervised by the market and operators, and the purchasing confidence of the consumers is increased.

The invention discloses a method for preparing a special nutrient soil for succulent plants. The method mainly comprises the steps of crushing, fermenting, sieving, disinfecting, heating and mixing. The method is simple in processing, easily accessible in material and low in processing cost; after the nutrient soil is used for a long time, the pH value is stably kept between 6.5 and 7.0; the water retentivity and the air permeability are excellent, the adsorption capability is strong, toxins can be effectively absorbed, fertilizer and water loss and dissipation are reduced, certain nutrition can be provided according to the requirements of the plants per se, and the probability of pest arousing is low.

The invention provides a production method of a biochar-based organic special fertilizer for tomatoes, which is prepared from the following components in parts by weight: 20-25 parts of biochar, 45-50parts of organic matter, 6-9 parts of nitrogen (N2), 3-5 parts of phosphorus (P2O5), 6-9 parts of potassium (K2O), 1-3 parts of potassium sulfate, 3-5 parts of ammonium molybdate, 0.5-1 part of humicacid, 1.5-2.5 parts of wood vinegar, 1-2 parts of wood tar, 0.05-1 part of beneficial microbial inoculum, 0.5-1 part of fertilizer controlled release agent and 1 part of forming aid. The organic matters are solid livestock and poultry manure with the water content of less than or equal to 30% and decomposed organic plants. The preparation method comprises the following steps: carrying out high-temperature pyrolysis on crop straws to prepare charcoal, carrying out mixed fermentation on the charcoal and organic matters for 10-20 days, adding the components, mixing and granulating the mixture byusing a granulator, and finally spraying wood tar onto the granular fertilizer. The special fertilizer contains a large amount of nutrient elements such as nitrogen, phosphorus and potassium and trace elements such as zinc and iron, so that waste resources are effectively utilized, soil is improved, the number of soil microorganisms is increased, and tomatoes are high in quality and yield.

The invention relates to a method of synthesizing artificial soil on the basis of algal mud. The artificial soil is prepared from the following ingredients including the algal mud, fly ash, straws, pH regulators, buffer agents, chelates and microbial preparations, wherein the mass percentage of the algal mud is 5 to 10 percent; the mass percentage of the fly ash is 80 to 90 percent; the mass percentage of the straws is 5 to 10 percent; 0.01 to 1000g of pH regulators, 0.01 to 1000g of buffer agents, 0.01 to 500g of chelates and 0.05 to 500g of microbial preparations are added in one ton of the mixture of the algal mud, the fly ash and the straws. The method overcomes the defects of low blue-green algae dewatering concentration efficiency, complicated detoxification process, low resource utilization rate and the like. The fly ash and the blue-green algae are mixed and ground, so that the moisture of the blue-green algae can fast enter the fly ash; then, open air aging and stabilization are performed. A great number of organic matter in the blue-green algae take a humification effect; the formation of artificial soil aggregate structure is promoted; partial organic matter takes a mineralization effect; various nutrients can be decomposed and released; the method of using the algal mud to produce the artificial soil has better economical performance and high operability.

The invention discloses a mushroom residue-based artificial soil. The mushroom residue-based artificial soil comprises mushroom residues, fly ash, animal dung, a pH regulator, a buffering agent and a chelate, wherein a mushroom residue, fly ash and animal dung mixture contains 20-60wt% of mushroom residues, 5-40wt% of fly ash and 15-40wt% of animal dung, and every ton of the mushroom residue, fly ash and animal dung mixture contains 0.01-1000g of the pH regulator, 0.01-1000g of the buffering agent and 0.01-500g of the chelate. The mushroom residues have light weight, the unit weights of the fly ash and the animal dung are large, and a ratio of the mushroom residues to the fly ash to the animal dung is controlled to make the unit weight of the artificial soil be similar to the unit weight of manure soil, so plant roots can be well fixed, the water holding permeability of soil is increased, water, fertilizers, air and other environment factors needed in the growth process of the plants are well coordinated, and a large amount of beneficial microorganisms in the mushroom residues increase the diversity of microorganisms in soil. The artificial soil has stable performances, is not affected by batches, seasons or regions, and keeps excellent application effects.

The invention discloses ecological nutrient soil for cuttage nursery stocks and a preparation method of the ecological nutrient soil. The ecological nutrient soil contains the following raw materialsin parts by weight: 15-20 parts of an organic fertilizer, 5-9 parts of attapulgite, 3-5 parts of bentonite, 3-5 parts of a microelement additive, 1-3 parts of cuttage rooting agent, 35-45 parts of agriculture product processing residue, 25-35 parts of mineral fillings, 2-4 parts of charcoal, 5-9 parts of a loosened additive, 3-5 parts of plant ash, 12-14 parts of building waste and 20-30 part of water. The ecological nutrient soil disclosed by the invention contains compete nutrients, is high in fertilizer efficiency and is unlikely to harden, so that the rooting rate of the cuttage nursery stocks is high, the survival rate is remarkably increased, and the water retention and ventilation effects are good; besides, by utilizing a large amount of agricultural and industrial waste, the laborand the cost can be saved, the resources can be saved, the ecological environment can be protected; and the preparation method is simple in process and has relatively high practical values and good application prospects, and the raw materials are easily available.

The invention discloses low-cost eco-friendly fertilizer for shrimp and crab culture waterweed. The low-cost eco-friendly fertilizer for shrimp and crab culture waterweed comprises, by weight, 5-15 parts of monopotassium phosphate, 10-20 parts of monoammonium phosphate, 10-20 parts of urea, 5-15 parts of potash magnesium sulphate fertilizer, 2-4 parts of decomposed chicken manure, 5-10 parts of plant ash, 1-6 parts of sesame powder, 1-6 parts of bean dregs, 1-10 parts of zeolite powder, 1-4 parts of kaolin, 3-9 parts of dolomite powder, 0.2-0.8 parts of attapulgite clay, 0.001-0.006 parts of composite microbes and 2-8 parts of a composite coating agent. According to a shrimp and crab culture waterweed fertilizer requirement law, the low-cost eco-friendly fertilizer is prepared. The low-cost eco-friendly fertilizer can effectively improve waterweed disease resistance, a pond soil buffering capacity and waterweed stress resistance, has a low cost, is environmentally friendly and can satisfy waterweed growth demands all the year round through one process.

The invention relates to the technical field of plant cultivation, and provides a preparation method of a water retention light nutrition medium suitable for arid area roof greening. The plant cultivation medium comprises, by weight, 30-50 parts of rotten organic waste, 20-40 parts of garden soil, 10-30 parts of kaolin and 4-6 parts of ceramsite. The cultivation medium is high in water retention capability, low in bulk density, loose, ventilated, light and free from diseases and insect pests and can increase survival rate of plants, a roof is effectively greened, city greening quantity is increased, and a micro-climate environment is adjusted. The preparation method of the plant cultivation medium includes the steps: mixing and crushing the rotten organic waste, the garden soil and the kaolin into particles; placing the ceramsite on an uppermost layer. The preparation method is simple in technique and high in operability, and industrial production is facilitated.

The invention provides an interplanting culture method of akebia trifoliata and pinellia ternate. The method comprises the steps of (1) transplanting raised akebia trifoliata seedlings onto a shed frame; (2) arranging a three-dimensional seedling raising frame under the shed frame, and spreading pinellia ternate tubers onto culture media after the culture media are thoroughly watered, wherein a plurality of planting grooves in the three-dimensional seedling raising frame are provided with the culture media respectively; (3) spraying a layer of slow-release fertilizer onto the culture media after pinellia ternate seedlings emerge, thoroughly performing watering when the water content of the culture media is lowered to 20% or below, and performing fertilization and water management in the later period; (4) harvesting pinellia ternate in July or August, continuing to plant pinellia ternate tubers into the planting grooves in middle and late September, and harvesting pinellia ternate fromlate January to early March. In the culture method, the plant diseases and pests of akebia trifoliata are reduced, the management is extensive, and the use amount of pesticide is smaller than that ofwoody climbers, so that the influence on the growth of pinellia ternate is small; since pinellia ternate is a shade-resistant medicinal material, the planting grooves can be formed in the three-dimensional planting frame, and the output of the unit land area is increased.

The invention provides a special substrate for raising tobacco seedlings and a preparation method of the substrate, and belongs to the technical field of seedling cultivation in agricultural production. The tobacco seedling raising substrate which contains a rice husk-fermented material is prepared from coconut coir, bagasse, washed cow dung, the rice husk-fermented material, vermiculite or perlite at a certain ratio. The substrate has the advantages that the seedling raising environment is improved, the microbial environment of roots is improved, the problem of treatment of organic solid waste materials is solved, the production cost of the substrate is reduced, and the technical content of the product is also improved; and the substrate has a simple preparation process and convenient operation.

The invention discloses a simple method for improving plant growth. The method comprises the following steps: drilling the rhizosphere interspace area of a main root system of vegetation by utilizinga ground auger in a region where soil moisture, nutrients and the like are in short supply, then fixing a hole by using an insertion pipe so as to enable natural rainfall and air to enter a root system growth layer along with the insertion pipe to increase soil air, moisture and nutrient content to promote the root system to grow. The simple method has the following advantages: 1) a preparation method is simple, strong in maneuverability, wide in application ranges, small in interference in regional ecology, green and pollution-free; 2) the gas permeability of soil can be increased for a relatively long term to loosen soil texture and enhance water holding and fertilizer retaining capacities; 3) the natural rainfall and air enter a drill hole to increase oxygen atom supply to the root system of the vegetation, which plays an important role in leaching nitrogen and phosphorus nutrient elements contained in a root system soil layer, so that the vegetation is promoted to grow; and 4) thegrowth vigor of vegetation in cold and arid regions, saline and alkaline lands, industrial mining areas and the like, where a drilled insertion pipe is utilized to ventilate and moisturize, is enhanced in different degrees.

The present invention relates to a culture medium for industrial cultivation of brown mushroom ring by utilizing animal and plant discards and its technical method. Said technical method includes the following steps: preparing raw materials, mixing them and piling, pre-fermentation, charging into mushroom house, pasteurizing, post-fermentation, sowing, growing mycelia, covering with soil, growing mushroom and management and harvesting. The formula of the culture medium is mainly formed from (wt%) 20-26% of corn stalk, 20-26% of wheat straw, 28-32% of chicke manure, 14-18% of horseshit, 3-4% of soybean cake, 1-2% of gypsum CaSO4 and 2-3% of lime CaO. Said invention can effectively raise nutrient components of brown mushroom king, and can make it have good taste and high nutritive value.

The invention discloses a soil remediation liquid including, by mass, 8-10 parts of organic spirulina powder, 8-10 parts of talcum powder, 5-8 parts of NaHCO3, 16-22 parts of low carbon bacillus subtilis, and 30-50 parts of distilled water. The soil remediation liquid increases water and fertilizer retention capability of soil and makes soil more and more fertile as planting crops year after year.The soil remediation liquid also can promote reproduction of beneficial organisms, such as earthworms, in soil, can enhance water permeation and retention and breathability and can promote aggregation, can reduce use amounts of chemical fertilizers and pesticides year by year; after application for 3-5 years, the ecologic, physical and chemical properties of soil are completely modified, thus achieving zero tillage. The soil remediation liquid has large scope and high speed of reducing residual pesticide, can degrade toxic chemical components, such as organic phosphorus, organic chlorine, organic nitrogen and herbicides, and turns the components into harmless substances.

The invention relates to the technical field of biological bacterial fertilizer, in particular to a preparation method of composite biological bacterial fertilizer. By the biological bacterial fertilizer produced according to the preparation method, influences on the ecology of orchards can be reduced, the quality and taste of produced fruits are improved, and the planting cost is reduced. The preparation method includes the following steps: (1) preparation of raw materials: taking straw and mushroom dregs as main materials, cutting the straw into small pieces of 1-1.5 cm, soaking the straw in water for 10-12 hours, fishing out the straw for standby use, dispersing the mushroom dregs for standby use, taking livestock feces and plant ash as auxiliary materials, adding the plant ash to the livestock feces, and carrying out homogenization for standby use; (2) mixed fermentation: fully and uniformly mixing the homogenized plant ash and livestock feces with the straw and the mushroom dregs, adding EM, performing composting after uniform mixing, and performing fermentation at the temperature of 30-35 DEG C for 24-30 days; (3) aeration treatment; (4) solid-liquid separation; (5) preparation of composite liquid fertilizer; and (6) preparation of composite solid fertilizer.

The present invention discloses a modified mineral material and a method for preparing a farmland soil ecological preparation, the method for preparing the farmland soil ecological preparation comprises the following steps: (a) the modified mineral material, animal and poultry manure and straw powder are mixed in the mass ratio of 1: 3: 3-1: 5: 5 to obtain a mixture; (b) a thermophilic complex microbial agent accounting for 3%-5% by mass of the mixture is added into the mixture for full stirring and even mixing; (c) the mixed material is put into high-temperature fermentation equipment, electrically-heated to 80-100 DEG C, and thermally insulated for 4-8h; and (d) the fully fermented dried material is prepared into particles by a pelletizer and then packed to obtain a farmland soil ecological preparation finished product. The prepared farmland soil ecological preparation is high in fertility, and easily absorbed by crops, and the fertilizer utilization can be increased by 10%-20%.

The invention belongs to the technical field of guava planting, in particular to a method for preventing and controlling guava pests. The method includes the following steps: (1) applying straw fermented substrates to soil according to 50-60 kg / mu, ploughing for 10-15 cm, and standing for 15-20 days; (2) mixing vermiculite and polyacrylamide dry powder according to a weight ratio of 1: (1.1-1.5),applying the mixture to the soil according to a weight ratio of 30-40 kg / mu, ploughing for 10-15 cm, standing for 3-7 days, and then fix-planting or planting; (3) pouring 200-300 g / tree of traditionalChinese medicine fermented fertilizers on guava roots 3 days after the guava is fix-planted or planted; and (4) spraying an insect prevention liquid on trunks of the guava trees the next month afterthe guava tree is fix-planted or planted, and spraying the insect prevention liquid on the trunks, leaves or fruits every 2-3 months thereafter. The method has a broad-spectrum insecticidal effect, can inhibit the growth and development of pests, is simple, does not need to use pesticides, has no toxicity to human bodies, and has high safety.

The invention provides a soilless culture method for vegetables. According to the soilless culture method, (1) a seedling culture medium comprises 10-20 parts of bagasse, 15-30 parts of tea leaf residues and 3-4 parts of a composite fermentation material, wherein the composite fermentation material is obtained from pine nut shells, chestnut shells, chaff and cottonseed hulls in a mixed, decomposedand fermented mode; (2) the thickness of the seedling culture medium is 15-20cm; steps of sowing vegetable seeds, covering a mixture of the seedling culture medium and bran ash, and spraying wet arecarried out; (3) a seedling culture medium comprises 5-15 parts of bagasse, 5-10 parts of tea leaf residues, 10-20 parts of beet pulp, 5-8 parts of a composite fermentation material and 10-20 parts ofexpanded perlite; and (4) vegetable seedling field planting is carried out, and thickness of the seedling culture medium is 20-30 cm. By means of the cultivation method, the physicochemical propertyof the medium can be effectively kept, accumulation of germs and eggs in the medium is restrained, the stable high seedling rate of vegetable seedlings and the high survival rate of vegetable transplanting are guaranteed, the germ infection rate is reduced, and continuous, stable and high-quality production of soilless cultivation of vegetables is achieved.

The invention discloses a fish protein organic compound fertilizer and a preparation method thereof. The fish protein organic compound fertilizer is prepared by using a deep marine fish as a main raw material and adopting the steps of fermenting through microorganisms to form a liquid base fertilizer and adding copper sulfate, ferrous sulfate, zinc sulfate, manganese sulfate, molybdenum salt, fulvic potassium, EDTA (Ethylene Diamine Tetraacetic Acid) and the like. The fish protein organic compound fertilizer is rich in fish protein and multiple trace elements, is favorable for improving the soil, promoting the aggregation, improving the water retention and ventilation of the soil and eliminating the hardening, and is suitable for various vegetables, fruit trees and field crops.

The invention discloses a maltodextrin based soil remediation complexing agent. The maltodextrin based soil remediation complexing agent comprises the following raw materials by weight: 40-65 parts ofmaltodextrin, 10-30 parts of organic acid, 10-25 parts of initiator, 0.5-1.5 parts of compound microorganism bacterium agent, 2-5 parts of activated carbon, 10-20 parts of amino acid. The invention aims at providing the maltodextrin based soil remediation complexing agent, the remediation efficiency of the maltodextrin based soil remediation complexing agent is high, the water-retaining propertyand the air permeability of the soil is good, the soil remediation effect is good, the content of the heavy metal like cadmium is reduced to be lower than the limit of detection, the usage amount of asoil remediation agent is low, and the cost is reduced.