49results about How to "Reduce photosynthesis" patented technology

The invention relates to a method and a system for producing biodiesel by cultivating microalgae by using urban sewage. According to the method and the system, a sewage treatment system is converted from a treatment technique to a production technique; high contents of organics and nutrients such as nitrogen and phosphorus in the urban sewage are conducive to mass propagation of the microalgae, so that the sewage is converted from pollutants to raw materials for the growth of the microalgae; CO2 circulation and O2 circulation are tightly combined through the establishment of an algal-bacterial symbiotic system, so that the growth of the microalgae is no longer dependent on an external carbon source, and meanwhile, the production cost is low due to the reduction of aeration systems in an aeration tank; the illumination in the aeration tank is abundant due to the use of a photosynthesis component, which is conducive to the photosynthesis of the microalgae; and the subsequent sludge quantity is small due to the use of efficiently-degraded strains.

The invention relates to a special apple organic-inorganic compound fertilizer containing active calcium and iron nutritions and a preparation method thereof. The special apple organic-inorganic compound fertilizer containing active calcium and iron nutritions comprises the following raw materials: 35-65 portions of ferment organic fertilizers, 5-30 portions of urea, 0-25 portions of diammonium phosphate and 5-35 portions of potassium sulphate, wherein the ferment organic fertilizers are prepared by using 55-75 portions of xylitol residues, 10-20 portions of grass peat, 8-16 portions of calcium-magnesia phosphate fertolizers and 2-8 portions of ferrous sulfate as raw materials, adding 1-2 portions of microbial fermentation fungus agents and 1-2 portions of EM compound fungus agents to carry out fermentation and air-drying the mixture to reach the water content of 25-35wt%. The special apple organic-inorganic compound fertilizer containing active calcium and iron nutritions provides sufficient calcium and iron nutritions for apple growth, has reasonable nutrient ratio and improves the apple quality and the apple yield.

The invention relates to a method for improving tissue culture reproductive speed of Alpinia zerumbet, which relates to the tissue culture technology of Alpinia zerumbet, and comprises the following steps that: A. seed collection is proceeded after 7 to 8 continuous sunny days, clumped Alpinia zerumbet plants which are used as seed are dug out from the soil 2 to 3 days before the seed production, soil is removed, and the Alpinia zerumbet plants are hung upside down to be dried for 2 to 3 days at a cool well-ventilated indoor place; B. lateral buds on tubers or spouts are selected as explant materials; C. adventitious buds are inducted to produce; D. adventitious buds are bred and cultured; E. adventitious buds are rooted to culture; and F. seedlings are transplanted. The rapid formation of adventitious buds is promoted through high temperature and high-concentration hormone, so the induction efficiency is improved, and the culture time is shortened; the formation of variegated leaf solid buds can be realized by changing the culture medium formula, reducing the culture temperature and increasing the light density, whitening variation can be reduced, the rapid breeding rate and seedling formation rate can be effectively improved, the factory-oriented production progress of the tissue cultured seedling can be accelerated, and the production cost can be reduced.

The invention belongs to the technical field of disease and insect pest prevention and control for fruit trees, and particularly relates to a fruit tree insect prevention technology by the aid of covers. The fruit tree insect prevention technology is characterized in that according to research findings on fruit setting characteristics of different varieties of fruit trees and activity rules of injurious insects on the fruit trees, when single fruit trees or in-line fruit trees or vast fruit trees which have different fruit setting characteristics and the injurious insects with different activity rules are specifically protected by the covers in proper periods, fruits can be isolated from the injurious insects and are effectively prevented from being harmed by the injurious insects, the photosynthesis of the fruit trees is hardly affected by selected cover materials, obvious influence of the selected cover materials on the temperature and the humidity required by each fruit tree is prevented, and a physical protection layer can be provided for each single fruit tree, the in-line fruit trees or the vast fruit trees; simple supports of the covers comprise upright columns (timber piles or steel tubes) and drawn steel wires, and the covers can be shifted as needed, can be operated easily and conveniently and are economical and durable. The fruit tree insect prevention technology has the advantages that dependence on pesticides for pest control and corresponding pesticide and labor cost input can be greatly reduced for fruit growers, the commodity rate of the fruits is increased, and the safety of the fruits is improved.

The invention discloses a refrigeration preservation method of hulled fresh lotus seeds. The refrigeration preservation method mainly comprises the following steps: (1), preprocessing fresh picked lotus seedpods at a low temperature; (2), screening the full fresh hulled lotus seeds; (3), instantly blanching; (4), protecting color, preserving and coating; (5), internally filling an iron powder drying agent small bag, and vacuum-packaging; and (6), refrigerating at a low temperature of 2-4 DEG C to obtain the hulled fresh lotus seeds. According to the refrigeration preservation method disclosed by the invention, physiological metabolism activities such as photosynthesis, respiration and evaportranspiration of the hulled fresh lotus seeds are effectively reduced, the color browning in a storage period is decreased, the appearance quality of the fresh lotus seeds is fully remained, the nutritional quality and flavor of the lotus seeds are well kept, and the effective preservation period is capable of reaching above 3 months. The refrigeration preservation method disclosed by the invention is simple in process, strong in maneuverability, small in investment, low in energy consumption, safe, and free of pollution; and the shelf life of fresh lotus seeds is greatly prolonged, and a new approach is developed for high-valued utilization of the lotus seeds.

The invention belongs to the field of tea tree seedling raising and specifically discloses a wild tea camellias cutting seedling raising method. The wild tea camellias cutting seedling raising method mainly comprises the following steps: within cutting time in May to June or October to November, scissoring new twigs which are 1.8-2.2mm in stem diameter and grown in the current year from selected excellent stock trees as cutting seedlings, wherein the branches become red from green, and the cutting seedlings are semi-lignified strong branch tips which are free of quarantine diseases and provided with axillary buds, preparing a seedling bed, cutting, shielding the sunshine, preventing freezing, performing field management after cutting, transplanting and the like. According to the characteristics that wild tea camellias is concentrated in a high altitude area with great diurnal temperature difference and cold winters, and has unique growth characteristics, improvements to the material selection, seedling bed preparation, seedling field management and the like, which are different from those of a common tea tree cutting technology, are made, so that the survival rate of the wild tea camellias is greatly increased.

The invention relates to a modern agricultural planting technology and in particular to a method for planting spinaches in an artificial light type plant factory. According to the method for planting the spinaches in the artificial light type plant factory, high-quality spinaches are highly efficiently obtained via synergistic effects of synergizing the light quality, light intensity, light period at each growth stage with environmental factors, such as temperature, humidity and fertilizers , based on the growth habits of the spinaches. In the method for planting the spinaches in the artificial light type plant factory, the growth habits of the spinaches are fully utilized, not only are leaf areas, fresh weight and plant height of the spinaches increased, but also the content of protein in the spinaches is increased, so that the spinaches are high in nutritional value, the content of tannin in the spinaches is increased, the astringency of the spinaches during eating is effectively reduced, and the content of nitrate in the spinaches is also reduced; furthermore, influence of seasons on spinach planting is avoided, and the method for planting the spinaches in the artificial light type plant factory is significant to large-scale indoor production of edible spinaches.

The invention provides an easily-processed polyethylene composition, and belongs to the technical field of processing of polyethylene films. The easily-processed polyethylene composition is characterized by being prepared from the following components in parts by weight: 100 parts of polyethylene, 0.03 to 0.1 part of an antioxidant, 0.05 to 0.08 part of an acid acceptor, and 0.05 to 0.5 part of a processing auxiliary; a hydroxystearic acid salt compound is used as the processing auxiliary; a mixture of an hindered phenol antioxidant, a phosphite ester antioxidant and a thioester antioxidant is used as the antioxidant. Compared with the existing polyethylene film, the easily-processed polyethylene composition has the advantages of being small in shearing viscosity and screw torque, high in critical shearing rate, fast to produce the film, and outstanding in optical performance.

The present invention discloses a double-component solid bag-hanging carbon dioxide delayed release gas fertilization agent. Said invention includes two solid components of delayed release agent and solid carbonate, they are chemically-modified diatomite and ammonium hydrogen carbonate respectively. Said invention also provides its concrete preparation method and its application method.

The invention relates to resistance preparations of crops and use methods therefor, particularly relates to a compound preparation for improving drought resistance of wheat and a use method therefor and belongs to the technical field of agriculture. The compound preparation consists of plant nutritional agents, plant growth regulators, a chemical induction resisting agent, an adjuvant and water, wherein the plant nutritional agents consist of composite amino acid, a zinc salt, a ferric salt, boric acid or salts thereof, the plant growth regulators consist of compound sodium nitrophenolate and cycocel, the chemical induction resisting agent is salicylic acid, and the adjuvant is a mixture of ethanol and glycerine. The compound preparation disclosed by the invention can be used for improving and supplementing nutrition and reducing transpiration, so that the relative water content of leaves under adverse circumstances is increased, the damage to cell membranes under the adverse circumstances is reduced, and then, the photochemical efficiency under the adverse circumstances is increased; and after the compound preparation is used, the drought resistance of the wheat can be remarkably enhanced, and the wheat can maintain normal growth and development and achieve relatively good yield and quality.

The invention discloses a seedling growing method for Dendrobium huoshanense. The method comprises the following steps: (1) processing seeds: sterilizing Dendrobium huoshanense seeds, mixing the sterilized seeds with a nutrient matrix, and burying the obtained mixture in a sand pool for 2-3 months; (2) accelerating germination of the seeds: activating the seeds, and using a fermentation solution to carry out constant temperature immersion in order to accelerate the germination; (3) sowing the seeds in a greenhouse: laying a nutrient matrix layer, a plant fertilizer layer and loess to form soilin the planting area of the greenhouse, and sterilizing the soil by the fermentation solution; and (4) regulating the greenhouse: regulating the illumination intensity and the carbon dioxide concentration within and after one month after the sowing. Compared with the traditional methods, the method improves the germination rate by 28.83%, improves the polysaccharide content by 6.66% and improvesthe co of the total alkaloid content by 0.025%; and Dendrobium huoshanense cultivated through has the characteristics of fast growth and strong drug functions.

A method of regulating the temperature of the rhizosphere environment of strawberries in a sunlight greenhouse is characterized in that pipeline branch pipes are directly distributed on culture substrate of overhead strawberry cultivation tanks, and each pipeline branch pipe is 5-8cm away from each strawberry plant; in winter, an ordinary pressure hot-water boiler is filled with water in advance, the water is heated to reach the temperature of 55-60 DEG C, a water pump is switched on, water currents flow through the pipeline branch pipes distributed on the culture substrate and directly heat the rhizosphere environment of the strawberries, the water returns to the ordinary pressure hot-water boiler, and the temperature of the rhizosphere environment of the strawberries is maintained in the range from 15 DEG C to 20 DEG C through continuous circulation of the process; in summer, tap water with the temperature ranging from 20 DEG C to 23 DEG C is adopted and does not need to be heated, the water pump is switched on directly, the tap water flows through the pipeline branch pipes distributed on the culture substrate and directly decrease the temperature of the rhizosphere environment of the strawberries, the tap water returns to the ordinary pressure hot-water boiler, and the temperature of the rhizosphere environment of the strawberries is maintained in the range from 23 DEG C to 25 DEG C through continuous circulation of the process. As the mode of directly increasing or decreasing the temperature of the rhizosphere environment of the strawberries is adopted, the method is beneficial to control of plant diseases and insect pests, beneficial to the strawberries to accumulate photosynthetic products, beneficial to improvement of root activity, good in temperature regulating effect, rapid in efficiency, low in equipment cost, low in operation and maintenance cost, and meanwhile obvious in energy-saving and water-saving effect.

The invention discloses a ginseng planting method which comprises the steps: performing land selection and land preparation: selecting a loose and fertile slope, with forest growth, gradient being 10 to 25 degrees, soil humus content being more than or equal to 4.2% and soil pH value being 5.0 to 6.5, as a ginseng bed, ploughing for once every 10 to 30 days, ploughing for 6 to 8 times, and applying base fertilizer when ploughing for the last time, wherein the base fertilizer comprises the following raw materials in parts by weight: 40 to 70 parts of goat manure, 12 to 15 parts of plant ash, 15 to 25 parts of calcium magnesium phosphate fertilizer, 2 to 4 parts of calcium superphosphate, 10 to 12 parts of zinc fertilizer and 5 to 7 parts of nitrogen fertilizer; treating seeds: soaking the seeds with new high-fat film 700-fold liquid for 15 minutes to perform disinfection treatment; soaking the seeds with 50% carbendazim 600-fold liquid for 40 minutes before sowing; and sowing, performing field management, harvesting and the like. By the ginseng planting method, under-forest land is utilized reasonably and planting parameters are adjusted according to the biological characteristics of ginseng, so the planting yield is high and the production quality is stable.

The invention relates to a water-saving agent for drought resistance of plants, particularly relates to a warm season type water-saving agent for drought resistance of lawn grasses and a preparation method thereof. The warm season type water-saving agent can increase biomass, enhance drought resistant and plant disease-preventing capacity, and effectively prolong the drought resistance time. The warm season type water-saving agent comprises the following raw materials in percentage by weight: 0.02-0.05 of chitosan, 0.004-0.01 of salicylic acid, 0.00067-0.004 of forchlorfenuron, less than 0.03of phosphoric acid, less than 0.002 of cosolvent, and less than 0.05 of organic solvent and water in balance. The preparation method comprises the following steps: adding chitosan into phosphoric acid, homogeneously mixing, adding ethanol, dissolving under stirring, adding salicylic acid and forchlorfenuron, stirring, adding cosolvent and water, dissolving under stirring, and adding water to obtain colorless transparent mixed solution, i.e. warm season type water-saving agent for drought resistance of lawn grasses.

The invention discloses a special anti-transpiration agent for vegetables, which comprises the following components: fulvic acid, 2, 4-epibrassinolide and medium trace elements, wherein the medium trace elements comprise calcium ammonium nitrate, chelated iron, sodium molybdate, manganese sulfate, zinc sulfate, copper sulfate and borax. The components are mixed and then can be sprayed to the surfaces of vegetable leaves. According to the special anti-transpiration agent for vegetables adopting the structure, the fulvic acid, the 2, 4-epibrassinolide and the microelement fertilizer are mixed according to a certain proportion, so that the transpiration effect of plants is reduced, and the drought resistance, the stress resistance, the yield and the quality are improved; meanwhile, various microelement fertilizers are supplemented according to nutrient requirements of crops, nutrient substances are provided, yield formation is promoted, and production of high-quality vegetables is facilitated.

The invention provides a method for increasing a cropping index while improving tomato breeding field soil. The method comprises the steps that in a solar greenhouse, a matrix is placed in a seedling disc, tomatoes are sown, and the seedling disc is covered with the matrix and a plastic film sequentially after sowing; after 80 percent of seed leaves come up, the plastic film is removed, and tomato seedlings continue to be cultivated; after the tomato seedlings grow with two leaves and one core, flat furrows are arranged outside the solar greenhouse in the east and west direction, the tomato seedlings are transplanted to the flat furrows, and the flat furrows are provided with an arch shed covered with double layers of plastic films; after the tomato seedlings grow with the plant height ranging from 20 cm to 30 cm, the tomato seedlings are planted to a plurality of cultivation furrows, two ears of inflorescences are reserved for each tomato seedling, and cultivation continues after pinching, wherein the distance between every two adjacent cultivation furrows ranges from 35 cm to 45 cm; after the tomato seedlings bloom and bear fruit, corns are interplanted between the cultivation furrows. According to the method, the cropping index can be increased, the land utilization efficiency can be improved, and the soil is improved.

The invention relates to the grafting technology of camellia and in particular to a method for improving a success rate of grafting camellia on a safflower oil tea tree. The method comprises the following steps: step one, in December, slantwise cutting the safflower oil tea tree trunk along bark to form an grafting opening; step two, cuttage-grafting the selected camellia branch in the grafting opening, binding the safflower oil tea tree trunk at the grafting opening by using a wrapping belt, and clamping the camellia branch by the grafting opening; step three, covering the camellia branch by using a black plastic bag, and tightly binding the opening of the black plastic bag; and step four, upwards watering the camellia branch from the opening of the black plastic bag. The method is capable of using the safflower oil tea tree with the lower real economic value as the grafting foundation of the camellia, enveloping by using the black plastic bag after grafting, effectively preventing the moisture evaporation of the camellia leaves, and reducing the own photosynthesis of the leaves, so the method is convenient for the successful grafting.

The invention relates to a method for rapidly and concentratedly preparing porphyra haitanensis protoplast; in the method, porphyra haitanensis frond (thallus) is used as material, through controlling environmental factors such as salt content, light and temperature, the photosynthesis is reduced, the respiration is enhanced and the regular growth is stopped, the vegetative cells of the porphyra haitanensis frond are forced to generate cellulose and pectinase to degrade cell walls, and the cell walls after being degraded give off protoplast with reproductive potential. The method is easy to operate and high in efficiency; by adopting the method, most vegetative cells of the porphyra haitanensis frond can be transformed into dissociative protoplast within 3-5days, the degradation degree of frond cells can reach 60-70%. The method provided by the invention is not to degrade the protoplast by external enzyme hydrolysis method but to activate the degradation enzyme system itself. The dissociative protoplasts obtained by the method are high in quantity and are separated evenly, and the cell mass or tissue mass which is incompletely degraded is avoided.

The invention relates to the technical field of agricultural planting and specifically relates to a method for planting pearl guava. The method mainly comprises the following steps: (1) selecting land and preparing land: selecting suitable land and digging pearl guava planting holes in the land; (2) planting: fertilizing in the planting holes and then planting; (3) managing field: a) adjusting the production period, b) forcing flowers, c) thinning flowers and fruits, and d) bagging; and (4) harvesting fruits: picking after the fruits are matured. The method for planting pearl guava, provided by the invention, is used for normally planting the pearl guava; besides, the marketing time of the pearl guava can be adjusted and the pearl guava can be prevented from being sold in the peak period, so that the economic benefits can be increased.

A method of regulating the temperature of the rhizosphere environment of strawberries in a sunlight greenhouse is characterized in that pipeline branch pipes are directly distributed on culture substrate of overhead strawberry cultivation tanks, and each pipeline branch pipe is 5-8cm away from each strawberry plant; in winter, an ordinary pressure hot-water boiler is filled with water in advance, the water is heated to reach the temperature of 55-60 DEG C, a water pump is switched on, water currents flow through the pipeline branch pipes distributed on the culture substrate and directly heat the rhizosphere environment of the strawberries, the water returns to the ordinary pressure hot-water boiler, and the temperature of the rhizosphere environment of the strawberries is maintained in the range from 15 DEG C to 20 DEG C through continuous circulation of the process; in summer, tap water with the temperature ranging from 20 DEG C to 23 DEG C is adopted and does not need to be heated, the water pump is switched on directly, the tap water flows through the pipeline branch pipes distributed on the culture substrate and directly decrease the temperature of the rhizosphere environment of the strawberries, the tap water returns to the ordinary pressure hot-water boiler, and the temperature of the rhizosphere environment of the strawberries is maintained in the range from 23 DEG C to 25 DEG C through continuous circulation of the process. As the mode of directly increasing or decreasing the temperature of the rhizosphere environment of the strawberries is adopted, the method is beneficial to control of plant diseases and insect pests, beneficial to the strawberries to accumulate photosynthetic products, beneficial to improvement of root activity, good in temperature regulating effect, rapid in efficiency, low in equipment cost, low in operation and maintenance cost, and meanwhile obvious in energy-saving and water-saving effect.

The invention discloses a white tea planting method. The white tea planting method comprises the steps: sorting of tea seedlings, preliminary reclamation, rehabilitation, applying of sufficient base fertilizer, transplanting of tea seedlings and planting conservation, so that the tea survival rate is higher, and the labor intensity is lower, and the management cost is lower, and the tea planting cost is lower, and high quality tea can be obtained through the above steps, thus guaranteeing the quality of tea produced by tea farmers from raw materials, improving the market position of tea, and ensuring the health care effect of people who drink tea in the life. Besides, after transplanting of the tea seedlings, each of the tea seedlings is trimmed and remains 4 to 5 leaves to reduce photosynthesis and reduce water consumption, thus effectively improving the survival rate of the tea seedlings.

The invention relates to a method and a system for producing biodiesel by cultivating microalgae by using urban sewage. According to the method and the system, a sewage treatment system is converted from a treatment technique to a production technique; high contents of organics and nutrients such as nitrogen and phosphorus in the urban sewage are conducive to mass propagation of the microalgae, so that the sewage is converted from pollutants to raw materials for the growth of the microalgae; CO2 circulation and O2 circulation are tightly combined through the establishment of an algal-bacterial symbiotic system, so that the growth of the microalgae is no longer dependent on an external carbon source, and meanwhile, the production cost is low due to the reduction of aeration systems in an aeration tank; the illumination in the aeration tank is abundant due to the use of a photosynthesis component, which is conducive to the photosynthesis of the microalgae; and the subsequent sludge quantity is small due to the use of efficiently-degraded strains.

The invention relates to a manufacturing method of a high-reflectivity mulching film. The mulching film is a double-sided mulching film composed of two layers of non-woven fabric, wherein the front surface is reflective white non-woven fabric, the back surface is black non-woven fabric, and each layer of non-woven fabric is manufactured by mixing polypropylene matrix resin, an anti-aging additive, titanium dioxide and pigment master batch, and manufactured through feeding, high-temperature melting, filtering, metering of a metering pump, spinning, cooling, up-down stretching, web curtain conveying and hot rolling; the different layers of non-woven fabric are formed through sequential drawing and polymerizing of different lower stretchers in a conveying direction of a web curtain, and drawing and arranging directions of the different layers of non-woven fabric are arranged on a doffing plane of the web curtain in an intersecting mode; and finally, the obtained different layers of non-woven fabric are laminated and adhered to form the agricultural mulching film. According to the mulching film, the reflective rate of the mulching film is improved, the product is tear-resistant and uniform in thickness, and the usability and the service life of the product is improved. The preparation process is simple, reduced in production cost and suitable for industrial mass production.

The invention relates to environmental protection field particular to method to improve quality for water body in lake and pool and increase transparency which comprises, arranging structural layer in water to weaken the photosynthesis of water plant, restrain the growth of plankton, decrease quantity of plankton, and keep the water quality clear for long time.

The invention discloses a cultivating method for hylocereus undulates. The method comprises the following steps: 1) selecting a scion; 2) selecting a rootstock; 3) performing grafting to obtain hylocereus undulates seedlings; 4) planting the hylocereus undulates: planting the hylocereus undulates seedlings in a greenhouse nursery; 5) performing planting management: applying a fertilizer for the first time before flower buds of the hylocereus undulates are differentiated; picking buds in the middle stage of flower bud differentiation and 1-3 days before a flowering stage; performing artificialpollination in the flowering stage; applying a fertilizer for the second time in the early stage of a fruit setting stage; and applying a fertilizer for the third time in the middle stage of the fruitsetting stage; and 6) bearing fruits. The cultivating method disclosed by the invention has a high fruiting rate, fruits are large and have good quality, and therefore the method improves a yield ofthe hylocereus undulates and increases planting benefits.

The invention relates to the technical field of longan planting, in particular to a longan tip controlling agent and a preparation method thereof. The longan tip controlling agent consists of a tip controlling component and a nutritional agent; the weight ratio of the tip controlling component to the nutritional agent is (30-40):(10-13); the tip controlling component is prepared from the following raw materials: a garlic extract, maleic hydrazide, a lotus seed extract, eucalyptus oil, sesame oil, semen armeniacae amarae essential oil and tea saponin; the nutritional agent is prepared from the following raw materials: maltitol, animal urine, pectin, an aloe extract and carrageenan. The longan tip controlling agent provided by the invention can effectively inhibit germination and growth of winter tips, also can prevent and treat plant diseases and insect pests, reduces the morbidity of the longan, is favorable for a longan mother branch to store nutrition, promotes rapid growth of the longan, increases the fruit setting rate and increases plant income.

The invention discloses a cut flower fresh-keeping tablet containing Trichoderma pseudokonii polysaccharide and a preparation method thereof. The tablet includes Trichoderma pseudokonii polysaccharide, salicylic acid, maleamide, fresh flower nutrient solution, citric acid , dextrin, soluble starch, sodium carboxymethyl starch, magnesium stearate, 10%-15% starch slurry, this cut flower preservation sheet is easy to use, easy to store, non-toxic and pollution-free, and has a good fresh-keeping effect for cut flowers, and can be applied to Preservation of various cut flowers.

The invention provides a special polyglutamic acid-containing fertilizer for sweet potatoes. The special polyglutamic acid-containing fertilizer is prepared from the following raw materials in parts by weight: 0.1-5 parts of polyglutamic acid fermentation liquor, 1-5 parts of polyaspartic acid, 0.1-5 parts of glutathione, 10-25 parts of nitrogen fertilizer, 10-30 parts of phosphate fertilizer, 15-35 parts of potassium fertilizer, 1-15 parts of magnesium fertilizer, 1-10 parts of zinc fertilizer, 0.5-5 parts of manganese fertilizer and 0.5-5 parts of boron fertilizer. The polyglutamic acid-containing special fertilizer for sweet potatoes has the advantages of strong water retention capacity and high chemical fertilizer utilization rate, can enrich nutritional ingredients, promotes crop root growth and protein synthesis, and greatly improves the yield of sweet potatoes when being used for sweet potato planting.