132results about How to "Improve seedling growth rate" patented technology

The invention discloses a multifunctional composite seed coating agent, which is a crop seed treatment agent prepared by mixing active ingredients such as pesticides, fertilizers, plant growth regulators and the like with inactive ingredients such as film forming agents, emulsifying agents, dispersing agents, anti-freezing agents, defoaming agents, antiseptic agents, PH value regulators, pigments and the like. The invention not only can effectively prevent and control plant diseases and insect pests in the seedling stage but also can promote and control seedling growth, ensures that seedlings grow regularly and luxuriantly with multiple tillers, and obviously improves the seedling survival rate. The traditional method can be used for soaking coated seeds in flowing water to accelerate germination for carrying out water breeding, dry breeding or direct seeding, and the coated seeds can be stored safely.

The invention relates to a water culture method in raising seedlings of vegetable cavernosum, belonging to the technical field of vegetable seedling. The invention is characterized in that, the method has the matching between the water culture facility in raising seedlings of vegetable cavernosum and a nutrient solution specialized for seedlings; year-round production of water cultured vegetable seedlings is realized. The water culture method in raising seedlings of vegetable cavernosum has the advantages that, the growth process of the invention does not need to adopt convention nursery substrate; the drawbacks of conventional plug seedlings that the conventional plug seedlings are easy to be influenced by the nursery substrate and the conventional plug seedlings are not suitable to be used as water cultured vegetable are overcome; the nutrient required by the growth of the cultivated seedlings is provided by the special nutrient solution; the invention has the advantages of neat seedlings, no recovery period, short seedling period, high strong seedlings rate and other excellences.

The invention discloses a novel strain CLIMAX-VSF of streptomyces fradiae. The preservation number of the novel strain is CGMCC No. 5133; the preservation date is August 12, 2011; and the preservation department is China General Microbiological Culture Collection Center. The invention further discloses a microbial inoculum containing the novel strain. The novel strain CLIMAX-VSF of the streptomyces fradiae, which is provided by the invention, has quite obvious performances of disease resistance, nitrogen fixation, phosphate solubilization and somatotropin secretion. By using the strain, the germination rate and the growth speed in a seedling stage can be obviously improved under the condition that nutrients are not added to soil, and furthermore, diseases in the seedling stage and a growth period are obviously inhibited. On the aspect that the strain is used for the mixed preparation and the synergy of a fertilizer, the strain shows to have the favorable effect of activating soil nutrients and the performance of resisting a plurality of cultivation obstacles.

The invention relates to a novel crop seeding raising method, belonging to the field of crop seeding raising. The seedling raising method is characterized in that a seedling raising matrix or porous seeding raising hole trays filled with the seedling raising matrix is / are placed on a slope nursery bed, which has a certain inclination angle and covered or not by a barrier material on the surface, a water and fertilizer supplying facility is erected at the high end of the slope nursery bed, water and fertilizer are provided for the seedling raising matrix by utilizing the inclined guiding action of the slope to promote the crop seeds transplanted in the seedling raising matrix to germinate, root and grow, seeding raising management is carried out, and seedlings are lifted and transplanted when the seedlings achieve proper transplanting seedling age. By adopting the method, the water and fertilizer are agilely managed, the inland inundation or drought is prevented, the disease and pest are reduced, the seedling forming rate is high, and seedling domestication is carried out by inverting the seedling raising hole trays or the nursery bed, thus the strong seedlings are effectively cultured and the seedling recovering stage is shortened; and the cultured seedlings have the characteristics of flourishing root systems, strong and trim seedlings, strong viability, few or no disease plants, short seedling recovering stage, convenience for seedling taking and seedling transport for transplanting, simplicity in operation, labor saving, cost saving, high survival rate and the like.

The invention discloses a nutrient solution matrix-free seedling raising and cultivating system and a seedling raising method. The system comprises a nutrient solution seedling raising tank, a seedling grid plate, seeding paper and covering paper, wherein the nutrient solution seedling raising tank is filled with water or nutrient solution; the seedling raising grid plate is arranged on the nutrient solution seedling raising tank, and water through holes are formed on the side faces of the grid plate holes of the seedling raising grid plate; the seeding paper is laid on the seedling raising grid plate; and after seeding, the covering paper is covered on the seeding paper bearing seeds. The method comprises: sowing seeds on the seeding paper, covering the covering paper with high water absorbing performance and breathability and covering the perlite or vermiculite on the covering paper; and after the seeds germinate, the roots of the seedlings penetrate the seeding paper to grow downward to absorb water and nutrients from the nutrient solution below. When the system is used, a matrix which is adopted by the conventional industrial seeding raising technique is not used, the overall accurate control over the temperature, water, nutrient and oxygen required by plants for growth in the whole seedling raising process is realized, the industrialization of the seedling raising processis realized, and the uniformity, strong seedling rate and robust degree of the seedlings are improved.

The invention discloses a sunlight greenhouse pollution-free seedling growing method for broccoli. The sunlight greenhouse pollution-free seedling growing method comprises the following steps: preparing a seedling bed, treating seeds, sowing, performing seedling growing management, managing cultivation soil, planting, performing cultivation management and harvesting. Compared with the prior art, the sunlight greenhouse pollution-free seedling growing method has the advantages that raw materials in a seedling growing medium are all green pollution-free raw materials which are wide in source, nutrient substances can be effectively provided, and meanwhile phenomena that seedlings are burnt because of overnutrition, and the like can be avoided; due to addition of a boric fertilizer, a molybdenum fertilizer, a selenium fertilizer and the like in cultivation management, growth of plants and the quality of broccoli can be improved, the content of nutrient elements in broccoli can be increased, growing conditions of seedling growing and cultivation periods can be strictly controlled, the rate of strong seedlings of broccoli is high, the yield can be increased, the amount of resistance medicines can be reduced, and pollution-free planting can be achieved.

The invention relates to the field of a fertilizer, and specifically relates to a special fertilizer for float seedling raising of tobacco, which comprises the main components: 15-20% of potassium dihydrogen phosphate, 18-22% of potassium nitrate, 6-10% of potassium sulfate, 40-45% of ammonium nitrate, 6-10% of copper sulfate, 0.1-0.3% of zinc sulfate, 0.1-0.3% of borax, 0.1-0.3% of ammonium molybdate and 0.1-0.3% of iron chelate. According to the invention, the ratio of the nutrient components conforms with the fertilizer requiring rule of tobacco seedlings, and the elementary components are coordinated with each other, so that the absorption and conversion of various nutritive elements are facilitated and the growth and development of the tobacco seedling root system are obviously promoted; and under the same conditions, compared with other fertilizer, the fertilizer has the advantages that the early growth is rapid, the root system is stronger, the absorption and utilization of various nutritive element by the tobacco seedlings are facilitated, the sound seedling rate is obviously improved, the spiral roots and water roots are significantly reduced, and algae in a seedling raising tank is significantly reduced.

The invention discloses a simplified cultivating method for dry-cure pepper. The method improves the emergence rate, the planting percent and the strong seedling rate of direct-seeded seeds of pepper by covering and using direct-seeding nutrition balls and direct-seeding nutrition matrix. The method furhter solves the problems that surface layers in field direct seeding is prone to hardening due to the fact that soil temperature and humidity are affected by environment to be large in change to be unfavorable for seed emergence of pepper seeds and growth of seedlings. In addition, the method achieves practicability of pepper direct-seeding techniques and widens popularization and application ranges. By means of black film covering and direct seeding cultivation, the problems of weed growth in fields and serious pepper lodging are effectively solved, minimal tillage or zero tillage in fields are achieved, the use of weed killers is reduced, specific fertilizers are screened through tests to solve the problem of one-time fertilization in pepper production, additional fertilizers are avoided in pepper production on the premise of avoiding output reduction of peppers, and the problem of harvesting dry-cure scatter and fresh peppers at one time in a concentrated mode is solved. Thus, the purposes of achieving low cost production of peppers and improving pepper quality are achieved.

The invention belongs to a seedling culture method and particularly relates to a seedling culture method of lacebark pine, which is provided aiming at the current situation of low survival rate, strong seedling rate and large seedling rate. According to the seedling culture method, a seedling land is selected from a whole flat land which can be drained and irrigated, the seedling land is turned deeply, flattened and refined by raking, base fertilizers are sufficiently supplied to the seedling land, 10kg of ferrous sulfate powders are applied to each mu of the seedling land before land preparation and are buried into the soil to sterilize, and seeds need to be subjected to bud forcing treatment. A bordeaux mixture is used for soaking and sterilizing the seeds, before being sown, the seeds are soaked by warm water (50 DEG C-60 DEG C) or are accumulated in a sand mixing layer, so that bud forcing is conducted, after the soil is thawed for 15 days, 1-1.5kg of seeds are sown for each 10m2 of land, 1500 seedlings can be produced, the large seedlings can be cultured, and the seedlings can be transplanted for 2-3 times before planting. According to the seedling culture method, the survival rate and the strong seedling rate are high.

The invention belongs to the technical field of plant cultivation, provides a plant cultivation transplant technology, and relates to an ascendens mucronatum cuttage technology, in particular to the ascendens mucronatum cuttage cultivation and transplant technology. The ascendens mucronatum cuttage technology includes the steps of preparing a seedbed, picking ears, conducting root promoting treatment, conducting cuttage, managing and protecting the seedbed, hardening seedlings in a greenhouse and the like, wherein the seedbed is managed and protected under the specific temperature, humidity and light conditions, a proper amount of fertilizer and pesticide for preventing and controlling diseases and pests are applied before and after cuttage for ascendens mucronatum seedling cultivation. By means of the ascendens mucronatum cuttage technology, the ear picking cost is lowered, the ears are wide in source, the seedbed management and protection costs are lowered, the seedbed can be reused in the same year, the seedbed is used for cuttage in spring, survival ear seedlings can be transplanted outside the greenhouse to be hardened when summer comes, the seedbed is idle, cuttage in summer is facilitated, and the use frequency of the seedbed is increased.

The invention belongs to the technical field of planting of the root of red-rooted salvia, and particularly relates to a planting method for improving the medicinal value of the root of red-rooted salvia. The method comprises the steps of 1, soil fertilization treatment and greenhouse building before seed sowing, wherein the soil biological activity is effectively improved, soil is fertilized, soil bacterium breeding and insect damage are effectively restrained, robust growth of rhizomes is promoted, the nutrient absorbing capability of the root system is enhanced, and the high yield is effectively promoted; 2, seed treatment before seed sowing and seed sowing, wherein the cell viability is effectively improved, the sprouting emergence rate and the seedling strengthening rate are increased, and the good foundation is laid for high yield and high quality; 3, field management after seed sowing, wherein accumulation of soluble sugar and starch is promoted, growth and secretion of the rootsystem are promoted, the enzymatic activity of the root of red-rooted salvia is improved, the plant metabolism intensity is stimulated to be improved, synthesis and accumulation of active pharmaceutical ingredients are effectively promoted, the contents of rosmarinic acid, danshinolic acid B, cryptotanshinone and tanshinone II A can be effectively increased, and the medicinal value is greatly improved.

The invention relates to the technical field of rice seedling raising, and concretely relates to a method for producing a rice seedling medium from jasmine flower residues and tea dusts. The rice seedling medium is produced from, by weight, 35-45 parts of jasmine flower residues, 35-40 parts of rice field soil, 25-35 parts of jasmine branches, 20-25 parts of tea dusts, 10-15 parts of tea tree branches, 10-15 parts of minced corncobs, 10-15 parts of peanut vines, 8-10 parts of kudzu vines, 8-10 parts of cassava residues, 3-5 parts of dark tea bacterium culture, 0.5-1 part of zymocyte and 0.2-0.5 part of trace elements; and the trace elements comprise, by weight, 3-5 parts of ferrous sulfate, 2-3 parts of zinc sulfate, 2-3 parts of magnesium sulfate and 0.5-1 part of boric acid. The medium contains balanced nutrition, facilitates the uniform growth of seedlings, and makes transplanted seedlings have the advantages of strong rooting ability, fast green turning and early tillering.

The invention relates to an oil palm seed pregermination method. The method comprises the following steps: collecting fresh oil palm seeds; removing the epicarp and fiber on the surfaces of the seeds; cleaning surface grease for standby; treating by chemical reagents, disinfecting, packaging, carrying out cold treatment and heat treatment, and then soaking in clean water; and placing at normal temperature until germinating. The oil palm seed pregermination method has the advantages of simple technology and low cost. The mode of soaking by chemical reagents and processing at changed temperature and constant temperature can effectively break through the dormancy of the recalcitrant seeds of the oil palm, accelerate oil palm seeds to quickly and tidily germinate, improve the seed culture planting percent of the oil palm, reduce disease infection on seeds and buds and improve the planting percent and the quality of seedlings.

The invention relates to an accelerating germination method for shell-free type oil palm seeds. The accelerating germination method comprises using abluent solution to soak the shell-free type oil palm seeds, and cleaning and airing the seeds; using a disinfectant to rinse the seeds, placing the seeds into a plump transparent sealing bag filled with air, adding pure water of 2-4ml into every 10 seeds, transferring sprouting seeds to a sand bed, enabling a sand layer with the thickness of 1-2cm to be covered on the sprouting seeds, maintaining moist, transplanting the seeds into a seedling growing bag filled with nutrition soil when the seedlings grow to 9-12cm on the sand bed, and enabling the seedlings to grow into strong seedlings. The accelerating germination method is simple in process, convenient to operate, low in cost and high in efficiency, and can effectively overcome the shortcomings that the shell-free seeds are easy to dry and are subjected to germ infection easily. Germination time is short, the germination rate, the seedling emergency and the strong seedling rate are high, and the method is efficient for accelerating germination and seedling growing of the shell-free type oil palm seeds.

The invention relates to a solanberry type vegetable seedling matrix, which is prepared from turf, vermiculite, perlite and microbial fertilizers according to a certain proportion. The solanberry type vegetable seedling matrix is characterized by comprising the following ingredients in percentage by volume: 65 to 70 percent of turf, 14.3 to 19.7 percent of vermiculite and 11.4 to 16.6 percent of perlite. On the basis of the compound matrix in the mixture ratio, 2.8 to 3.2 kg of microbial fertilizer compound fungicides are added into each cubic meter of materials. The matrix recipe adopted by the matrix has better water preservation and fertilizer preservation performance and better ventilation performance, through the addition of the proper amount of the microbial fertilizer compound fungicides, the absorption and the utilization of seedlings on various nutrition ingredients can be improved, simultaneously, the generation of seedling period diseases is effectively inhabited, the seedling quality is improved, the seedling time is shortened, and the solanberry type vegetable seedling matrix is particularly suitable for winter seedling.

The invention relates to a flue-cured tobacco float seedling breeding method using novel substrate. The method includes: the substrate is placed in the cavity of a seedling tray, the whole seedling tray is placed on nutrient solution, and the nutrient solution supplies growth nutrition to a tobacco seedling planted in the cavity of the seedling tray through the bottom hole of the seedling tray; clean water is added to a nursery pond to reach 6-8cm of the depth of the pond after sowing, special seedling breeding fertilizer is added to the water in the pond to mix into nutrient solution A when the emergence rate reaches about 50%, namely the nutrient solution A is used when from emergence to a grand cross period; the seedling tray is allowed to float on the surface of the nutrient solution A; 0.1% humus acid is sprayed for one to two times from the grand cross period to a rooting period of the tobacco seedling; nutrient solution B is used from the rooting period to a seeding formation period; the nutrient solution is kept to reach 8-10cm of the depth of the pond until seedling formation is completed. The seedling breeding method is low in cost, simple to operate, easy and safe in material obtaining, good in tobacco seedling quality, suitable for large-area popularization and application and promising in popularization and application prospect; the seedling breeding cost of each seedling tray is lowered by about 2.6 yuan as compared with that of conventional flue-cured tobacco float seedling breeding, and the decreasing amplitude reaches 46%.

The invention relates to an antibiotic seed treatment agent composition. The composition comprises active ingredients, auxiliaries and carriers, wherein the active ingredients include effective quantity of neonicotinoid insecticide I ingredient and antibiotic bactericide II ingredient; the weight percent of the active ingredients in the composition is 1-20%; the I ingredient accounts for 1-10% of the composition by weight; the II ingredient accounts for 1-10% of the composition by weight. The antibiotic seed treatment agent composition has the beneficial effects that the two active ingredients are used after compounding, thus improving the crop disease control effects; insecticide / bactericide seed treatment agents are prepared from the seed treatment agent composition and the preferentially selected carriers and auxiliaries, so that the film forming property and the water resistance of films are greatly improved and the active ingredients are released slowly, thus lengthening the lasting periods of the active ingredient drugs, increasing the germination rates of seeds and promoting healthy growth of seedlings, reducing the consumption of pesticides and reducing pesticide residues and environmental pollution.

The invention discloses a rapid propagation method for a cactus, which relates to a rapid propagation method for a plant and belongs to the technical field of agriculture. The method is characterized by comprising the following steps: cutting a healthy cactus at an age of 1 to 3 years as an explant; treating the explant with 75% alcohol for 5 s; soaking the explant with 0.1% mercuric chloride for 30 s, with a bottle being shook continuously; and carrying out flushing with sterile water four to five times. With the method, a great number of germ-free explants and survival individuals are obtained. The invention has the following beneficial effects: through packaged technologies of cottage rapid propagation close planting, artificial cultivation and trimming and the like, a growth cycle of the cactus is shortened; through usage of ABT rooting powder for acceleration of induced differentiation, a good effect of 100% of bud inductivity is obtained; through appropriate usage of the ABT rooting powder, an appreciation rate and a strong seedling rate of the cactus are improved, and an optimal rooting agent is screened.

The invention discloses a preparation method of nutrition ball and nutrition medium for direct seeding of dry pepper. The preparation method of the nutrition ball comprises the steps of grinding corn straw, then mixing the corn straw with humus and cow dung, stacking and fermenting the corn straw, the humus and the cow dung, drying or baking and grinding the fermented material after complete fermentation, mixing the material with vermiculite and perlite, adding a water-retaining agent and a binding agent into the material for mixing, adding water into the material to mix the material finally, loading the material into a die, performing pressing forming to the material, taking out the material after the material is dried, and obtaining the nutrition ball for direct seeding. By adopting the nutrition ball and the nutrition medium, the emergence rate, the planting percent and the sound seedling percent for the direct seeding of pepper are improved, the problem that as soil temperature and humidity are easy to be affect by environment and the changes are large, and soil is easy to harden, a surface layer is not beneficial to germination of pepper seeds and seedling growth is solved, the practicality of pepper direct seeding technology is realized, and the extension and application scope of the pepper direct seeding technology is expanded.

The invention belongs to an efficient nursery seedling raising technology in the technical field of agriculture and forestry, and particularly discloses a vine tea seedling raising method that can root efficiently in a laminated manner. The vine tea seedling raising method comprises two key technical links: using first-level nursery lamination processing cuttage twigs to promote rooting; using second-level nursery to grow strong seedlings. The method adopts two-segment type seedling raising, and avoids extensive cuttage management; the method adopts a laminated method for seedling raising, uses low temperature in winter to reduce infection and mold rot, greatly promotes cutting slips to form callus, and improves rooting efficiency; with the two-segment type seedling raising and the laminated technology combined, the method improves the survival rate of cuttage and the rate of strong seedlings.

The invention relates to the technical field of plant cultivation, in particular to a light environment regulation and control method for promoting growth of cucumbers. The light environment regulation and control method for promoting growth of the cucumbers in each growth period comprises the step of providing an artificial light source for growing cucumber seedlings so as to promote the growth of the cucumber seedlings. The light environment regulation and control method for promoting growth of the cucumbers in each growth period has the beneficial effects that light environment parameters suitable for the growth of the cucumbers are regulated in the growth process of the cucumbers in the growth periods, an optimal light supplementing scheme is provided for plants, the whole growth period from sowing germination to fruiting harvesting of the cucumbers is covered, the light energy absorption rate and utilization rate of the cucumbers are improved, electric energy is promoted to be converted into biochemical energy of cucumbers, the seedling strengthening rate and disease resistance of cucumber seedlings in winter or in a light-deficient environment are improved, early flowering is promoted, and the yield and quality of the cucumbers are improved.

The invention discloses a capsicum annuum planting method. The method comprises steps as follows: (1), variety selection and seed pretreatment; (2), germination accelerating treatment; (3), seedling culture; (4), seedling culture management; (5), field planting; (6), field management; (7), harvesting. According to the capsicum annuum planting method, seed germination rate, seedling rate and seedling strengthening rate of direct sowing of capsicum annuum can be increased, besides, the method is simple and easy to operate, incidence rate of pest and disease damage is low, capsicum annuum growthrate is high, capsicum annuum yield is increased, taste and nutritive value of the capsicum annuum are improved, planting cost of the capsicum annuum is reduced, economic benefit of a vegetable groweris increased, and the method is suitable for being popularized.

The invention relates to the technical field of rice planting, in particular to nutrient soil for rice seedling growing. 100 kilograms by weight of nutrient soil is prepared from 70%-80% of sandy soil, 3%-5% of hull powder, 5%-10% of plant ash and 10%-15% of composted manure. The nutrient soil is used for improving the quality of rice seedlings, after the rice seedlings are transplanted, roots are not damaged, seedling recovering is avoided, the rate of strengthening the seedlings is high, the diseases of the rice seedlings are reduced, the rice seedlings grow healthily and strongly, and the rice yield is increased.

The invention provides a method for cultivating pachyrhizua angulatus tissue culture seedlings by means of plant growth lamps. The method comprises the following steps of putting up a greenhouse, determining and customizing the plant growth lights, selecting a seedling-raising substrate, selecting pachyrhizua angulatus tissue culture seedlings, raising the seedlings and conducting seedling-raising management. The greenhouse adopts an ordinary steel frame structure, one side of the greenhouse is provided with a rolling gate used for being rolled up or laid down, and therefore the temperature in the greenhouse is adjusted; each plant growth lamp adopts an LED of which the lamp head power is 3 W, and a 220 v alternating current power supply is adopted to serve as a luminous source, wherein the ratio of red-light lamp heads to blue-light lamp heads is 7:2; the substrate is prepared from clean loess, yellow sand and organic fertilizer, the ratio of clean loess to yellow sand to organic fertilizer is 1 to 1 to 0.2, and the organic fertilizer is prepared by evenly blending and fermenting sheep manure, chicken manure, peanut bran and tea bran according to the proportion of 1:1:0.5:0.2. The survival rate of the pachyrhizua angulatus tissue culture seedlings cultivated through the method is high, and compared with the situation that seedling raising can be conducted only in February and March in the prior art, by means of the method, seedling raising can be advanced to be conducted from December of previous year, the peak that kudzuvine rhizomes appear on the market in a centralized mode is avoided, the economic benefit is improved, and the time cost is reduced.

The invention discloses a cultivation method of pachira macrocarpa. The method comprises the following steps of land preparation, wherein a sandy loam land parcel which is deep, thick and fertile in soil, leeward and great in irrigation and drainage performance and faces the sun is selected and used as a planting field, land preparation is conducted, furrows are dug, and disinfection is conducted;sowing, wherein fresh pachira macrocarpa seeds with full grains are selected, soaked in water, cleaned, sowed in the planting field and watered, the temperature at the seeding stage is controlled, and pachira macrocarpa seedlings are obtained; transplantation, wherein disinfected nutrient soil is put into a planting pot, then the pachira macrocarpa seedlings are transplanted, and the pachira macrocarpa seedlings are sprayed with seed soaking liquid; pruning, wherein the pruning process comprises the steps of pinching, bud thinning, leaf picking, short pruning and shrinkage pruning. Accordingto the cultivation method of pachira macrocarpa, pachira macrocarpa is high in the seedling emergence rate and seedling strengthening rate, good in the growth condition and high in the stress resistance, pruning at the later period and recovering after pruning are conducted conveniently, and the ornamental effect and air purification effect of pachira macrocarpa are improved.

The invention provides an annual yield increase cultivation method of wheat and maize in the Huang-Huai-Hai southern region. By means of the method, the soil organic carbon storage can be increased, the porosity of surface soil can be increased, the carbon pool management index (CPMI) of soil can be increased, and the yield of wheat and the yield of corn can be increased at the same time. The CPMI of soil reflects the influence of external management measures on the total amount of soil organic matter and also reflects the change of soil organic matter components. According to the method, the physicochemical and biological characteristics of soil can be improved, the fertility of soil can be improved, the yield of crops can be increased, the bulk density of surface soil can be decreased, and the water content can be increased.

The invention discloses a rice hull based floatation seedling nursing matrix for flue-cured tobacco and a supporting seedling nursing nutrient solution thereof and relates to the field of flue-cured tobacco seedling nursing technologies of agricultural techniques. The rice hull based floatation seedling nursing matrix for the flue-cured tobacco is prepared from the following raw materials in parts by volume: 45-50 parts of rice hull treated material, 30-35 parts of pearlite, 16-20 parts of vermiculite and 2 parts of fine sand. The seedling nursing nutrient solution is prepared from the following raw materials in parts by weight: 30-60 parts of calcium nitrate tetrahydrate, 300-350 parts of ammonium nitrate phosphate, 360-400 parts of potassium nitrate, 40-80 parts of magnesium sulfate heptahydrate, 150-200 parts of monoammonium phosphate, 5-10 parts of DA-6, 10-20 parts of zinc sulfate heptahydrate, 10-20 parts of sodium citrate, 10-25 parts of boric acid, 10-20 parts of chalcanthite and 1,000,000 parts of water. The rice hull based floatation seedling nursing matrix for the flue-cured tobacco and the supporting seedling nursing nutrient solution thereof have the characteristics that the consumption of grass charcoal can be reduced, the seedling nursing cost is reduced, healthy and strong tobacco seedlings can be cultured and the like and are applicable to the floatation seedling nursing of the flue-cured tobacco of all flue-cured tobacco planting areas across the country.

The invention relates to a tissue culture and propagation method of cinnamomum camphora. According to the method, the combination of improved DCR culture medium and MS culture is used for the first time; through the measures of improving the DCR culture medium element content, regulating the plant hormone level, increasing active carbon, regulating and controlling the temperature illumination, increasing the seeding strengthening culture and the like, the invention provides a cinnamomum camphora tissue culture system with the advantages that the bud induction rate reaches up to 98 percent or higher; the growth coefficient with an average of 4.8; the browning rate is smaller than 3.2 percent; the seeding strengthening rate (3cm or higher) is 81 percent or higher; the transplanting survival rate reaches 87 percent or higher; the heavy demand of markets on the cinnamomum camphora is met.

The invention discloses a fruit vegetable seedling culture method in winter and spring, which comprises the steps of: seedling bed building, seedling bed fertilization, nutrition soil preparation and seeding. In the seedling bed building step, north-south geosynclines with the depth being 0.4 to 0.6m, the width being 1.3 to 1.7m and the length being 5.0 to 8.0m are dug in a position with sufficient light illumination in a daylight greenhouse or a greenhouse, heat insulation materials are adopted at the periphery of the inner wall of the geosynclines to be used as heat insulation inner liners, rice hulls with the thickness being 4 to 6cm are paved at the bottom of the geosynclines, a heat insulation cover plate is arranged at a notch, and a box type seedling bed is formed. The fruit vegetable seedling culture method in winter and spring aims at solving the problems that in the cold-season seedling culture in winter and spring, the facility is simple, heating equipment is lack, the cold damage is easy to occur, and the seedling culture quality and the success ratio are low. According to the invention, the seedling culture box type seedling culture is adopted, and the seedling bed night temperature is improved by 5 to 7 DEG C. According to the seedling culture method, the occurrence of cold damage and freeze damage can be effectively prevented in cold season, the strong seedling rate is improved to a value higher than 90 percent, and in addition, the effects of environment protection, energy saving, low cost and easiness in control to the technology are realized in the seedling culture process.

The invention belongs to the technical field of Enteromorpha prolifra planting and particularly relates to a floating-tray seedling raising method for autumn Enteromorpha prolifra. The method comprises the steps of substrate preparation, sowing, after-sowing management and field planting. Compared with the prior art, the method disclosed by the invention has the following advantages that a substrate has relatively high fertilizer and water retention capacity and is good in permeability, and the rapid germination of seeds is facilitated due to the matched action of the substrate and a sowing method; through controlling seedling raising conditions and methods, the time for seedling raising can be shortened by 4 to 6 days, the rate of seedling emergence and the rate of sound seedlings are increased, the disease resistance is enhanced, and the consumption of pesticides is lowered; and the injury to young seedlings is reduced during field planting, the survival rate is high after field planting, and the management method is simple, so that the method is applicable to popularization.