69results about How to "Prevent fruit drop" patented technology

The present invention discloses a composite synergist containing polyglutamic acid and potassium fulvic acid. The composite synergist comprises the polyglutamic acid and the potassium fulvic acid, wherein the weight ratio of the polyglutamic acid to the potassium fulvic acid is 1:(0.001-0.5). The invention also discloses an application of the above composite synergist containing the polyglutamic acid and the potassium fulvic acid. The synergistic fertilizer prepared by using the composite fertilizer synergist provided by the invention effectively promotes the growth and development of crops, increases the yields of food crops, leafy vegetables and melon and fruit economic crops, and significantly improves the utilization rate of the fertilizer.

The invention relates to a method for cultivating corn in saline-alkali soil. The method includes: broad irrigating the saline-alkali soil in the middle of March with the irrigation amount of 60-100m<3> each mu, airing for 1-1.5 months to allow earth surface to be dried enough for entering, applying 1000-1500kg of miscellaneous manure or 50-55kg of composite fertilizer to each mu, performing rotary tillage once to twice to mix the soil and the fertilizer, raking to preserve soil moisture, and levelling soil surface; processing with seed coating before sowing corn, adding pesticide first during germicide and pesticide seed dressing, piling and stuffing for 3-6 hours, then adding germicide, and sowing immediately after seed dressing, wherein the seed coating comprises actinomycin, bacillus subtilis, azospirillum, fulvic acid, carry powder, indole acetic acid, trace elements, alpha-pimacol growth regulator, EDTA-2Na chelating agent, humic acid and turf.

The invention discloses a foliar preparation for improving crop resistance and a preparation method thereof, wherein the foliar preparation comprises an amino acid fermentation waste liquid, potassiumhumate, alginic acid, a macroelement fertilizer, a medium-trace element fertilizer, a surfactant, a plant growth regulator, a pH regulator and a suspension thickening agent. The foliar preparation ofthe invention adopts the amino acid fermentation waste liquid as the main organic component to realize waste liquid utilization, so that resources are saved, and the foliar preparation is environmentally friendly and safe. In addition, the amino acid fermentation waste liquid is rich in small molecular water-soluble organic matter, can chelate trace elements, can directly provide organic nutrition to plants, and promote nutrient absorption, thereby ensuring the accumulation of carbohydrates and nutrient absorption in plants in continuous rain and haze weather, maintaining healthy growth, andeffectively preventing occurrence of wilting, yellow leaves and the like of the plants, and therefore the cold resistance and disease resistance of crops are improved, and increase of the crop yield is facilitated.

The invention provides a high-yield maize planting method. The high-yield maize planting method is characterized by including the steps of seed treatment, field planting, field management and water and fertilizer management, maize seeds of an excellent hybrid maize variety which is resistant to close planting, dwarf, resistant to falling, compact in plant type, green in straw, proper in mature period, free of cluster baldness and resistant to diseases and pests are selected and treated through a special organic seed coating agent for maize, wherein the organic seed coating agent is composed of actinomycin, bacillus subtilis, azospirillum brasilense, fulvic acid, spice powder, heteroauxin, microelements, a sodium alpha-naphthaleneacitic acid growth regulator, an EDTA-2Na chelating agent, humic acid and turf.

The invention discloses a cultivation method for increasing the yield of sweet sorghum in high saline-alkali soil. The cultivation method comprises the following steps: in the mid month of March, performing broad irrigation on the saline-alkali soil once, wherein the irrigation amount of each mu of soil is 60-100m<3>; airing for 1-1.5 months till the soil surface is dried and people can stand on the soil; applying 1000-1500kg of miscellaneous manure or 50-55kg of a composite fertilizer to each mu of the soil; performing rotary tillage once to twice so as to mix up the soil and the fertilizer; pressing by using a rake to preserve soil moisture, and flattening the land; treating seeds of sweet sorghum by using a seed coating before being seeded, wherein the seed coating is prepared from actinomycin, bacillus subtilis, azospirillum brasilense, fulvic acid, spicy powder, heteroauxin, microelements, a sodium alpha-naphthyl acetate growth regulator, an EDTA-2Na chelating agent, humic acid, turf, a bactericide and an insecticide; when mixing is implemented for seed dressing, blending the insecticide with the seeds firstly, stacking and tightly covering for 3-6 hours, further introducing the bactericide, and immediately seeding after the seed dressing is implemented.

The invention belongs to the field of agricultural fertilizer, relates to a foliage fertilizer, in particular to a foliage fertilizer for a longan tree and a production method of the foliage fertilizer. The foliage fertilizer is prepared from the following raw materials in parts by weight: 7 to 10 parts of biochemical fulvic acid potassium, 12 to 15 parts of urea, 5 to 7 parts of washing powder, 7 to 13 parts of monopotassium phosphate, 8 to 14 parts of amino acid-chelated copper and boron, 6 to 13 parts of sucrose-complexed manganese and calcium, 8 to 12 parts of diaminoferric xanthohumate, 1 to 2.5 parts of sophocarpidine, 14 to 20 parts of magnesium sulfate and 6 to 10 parts of zinc sulfate. The foliage fertilizer prepared by the production method disclosed by the invention is good in fertilizer efficiency, is rich in multiple medium trace elements required by the longan tree, and meets nutritional requirements of longan; after application, the foliage fertilizer has a significant prevention effect for physiological yellow coloring, small leaf, mottled leaf, roll leaf and the lime of the fruit tree; by using the foliage fertilizer, toot system development of the fruit tree can be promoted, disease invasion is prevented, and disease resistance, drought resistance and cold resistance of crops are improved; the foliage fertilizer has effects of improving the growth speed of longan, promoting fruiting and swelling, improving the yield and the quality of longan, improving the resistance of the fruit tree and sterilizing.

The invention provides a composite microbial disease / insect-resistant agent for green vegetables and a manufacturing method thereof. The composite microbial disease / insect-resistant agent for green vegetables comprises a composite microbial inoculant and a fertilizer, wherein the composite microbial inoculant is a mixed microbial inoculant formed by fermenting Bacillus and Rhodospirillum in a culture medium; the fertilizer comprises a potassium fertilizer and a pH regulator; the mass ratio of the composite microbial inoculant to the fertilizer is (30-50):(50-70); and the mass ratio of the Rhodospirillum microbial inoculant to the Bacillus microbial inoculant is (1-3):1. By adopting the composite microbial inoculant, the agent has the advantages of sufficient nutrients and reasonable supply, can enhance the nutrient absorption capacity of the plant root, and effectively inhibits harmful bacteria from growth and reproduction. When being used for a long time, the agent can improve the soil and avoid multiple diseases and insects due to deficiency of nutrient elements.

The invention relates to the technical field, and discloses a management method for fruiting trees of citrus sinensis. The method includes the following steps of 1, a fertilization method and a fruiting tree nutrition diagnosis method, 2, a cultivation method of strong autumn shoots, 3, a flowering promotion technology, 4, a fruit preservation technology, 5, a pruning technology, 6, soil management, 7, a high grafting and replanting technology, and 8, tree preservation technology by leaving the trees, wherein according to the fertilization method and the fruiting tree nutrition diagnosis method, by testing soil for formulated fertilization and using a water fertilizer integrated technology, an organic fertilizer is additionally applied, an inorganic fertilizer and a formula fertilizer arereasonably applied according to the nutrition diagnosis result; the cultivation method of the strong autumn shoots includes autumn shoot placement period setting and management before and after the shoot placement. The method can solve the technical problems that the fertilization method in the prior art is incorrect, the fruiting trees lack nutrients, fruits are easy to fall, the trees are easilysubjected to disease and pest damages, the yield is low, the quality of the fruits is instable, and a preservation method is improper.

The invention relates to an environmentally-friendly phytochemical pasty biopesticide and a preparation method thereof. The biopesticide is characterized by being prepared by grinding and boiling the following raw materials in percentage by mass in water: chinaberry seeds 25-45, eucalyptus citriodora branches and leaves 0-20, croton fruit 5-15, star anise 0-10, fennel 5-10, tea seed cake 20-30 and colza cake 5-10, wherein the total mass percentage of the raw material components is 100 percent. The biopesticide is suitable for preventing and controlling pest and disease damages to woody fruit trees of longan, lichee, mango, mandarine, persimmon, apple, snow pear, pomelo and the like and is applied on tree trunks to repel and contact and kill pests. And the biopesticide can obviously improve the photosynthesis of the leaf surfaces, promote the sound growth of the fruit trees, increase the strength of flower stalks and the thickness of petals when applied before blossom, improve fruit setting rates when applied in young fruit period, make fruit avoid drop, ripe fruits even, ripe period advanced or hanging period prolonged when applied in middle fruit period, and lay a basis for shooting promotion and high yield in the coming year when applied after harvest.

The invention discloses a preparation for cucumber foliage spraying. The preparation comprises brassinolide, gibberellin, compound sodium nitrophenolate, zinc methionine, water-soluble chitosan oligosaccharide, Chinese medicine extracting solutions, ethyl alcohol, dimethyl sulfoxide and muyu stone water, wherein the Chinese medicine extracting solutions comprise radix sophorae flavescentis, pericarpium granati, prickly ash seeds, scutellaria baicalensis, climbing groundsel herbs, fructus cnidii, manyprickle acanthopanax roots, radix angelicae dahuricae and panax notoginseng. The preparation for cucumber foliage spraying is sprayed once when female flowers are not bloomed, the cucumber quality is good, pest and disease damage does not occur, and compared with the prior art, the yield is improved by over 20 percent.

A high-yield maize culture method includes the steps of seed treatment, field planting, field management and water and fertilizer management. The method is characterized in that in the seed treatment step, maize seeds are treated through a special organic seed coating agent for maize, the seed coating agent is composed of actinomycin, bacillus mucilaginous, azospirillum brasilense, kieselguhr, spice powder, heteroauxin, potassium sulfate, magnesium sulfate, zinc sulfate, a sodium alpha-naphthaleneacitic acid growth regulator, an EDTA-2Na chelating agent, humic acid and turf.

The invention discloses a pests and disease prevention purposed planting method of soft-seed pomegranates. The pests and disease prevention purposed planting method mainly includes four prevention stages of preplanting, sapling, growing period and fruit period, for preplanting, performing deep plowing the land before planting, spraying a biogenic-source disinfectant, and disinfecting by a soil fumigation mode; for the sapling, growing period and fruit period, performing targeted prevention on different pathogenesis. With the method, to-be-cultivated soil can be kept clean, survival rate of the pomegranates is increased, pest and disease damage of later period is prevented, root, stem and leaf health is kept, photosynthesis of the pomegranates is improved, storage of nutrients is guaranteed, and growth quality of the pomegranates is improved; meanwhile, the disinfectant is the biogenic-source disinfectant, continuous pest killing effect is achieved, antibody cannot be produced to larva, and soil hardening, underground water pollution and harm to human beings cannot occur.

The invention relates to the field of technological agricultural planting, in particular to a planting method for Taiwan morus macroura. The method includes the following steps of land selecting and preparing, wherein the land which has a thick soil layer and is convenient to drain and irrigate is selected, and planting holes are prepared; planting, wherein healthy Taiwan morus macroura saplings are selected and planted; laying an irrigation system, wherein after the morus macroura saplings survive, the water and fertilizer integrated irrigation system is laid in the morus macroura planting land; field management; harvesting, wherein morus macroura is harvested after being matured, and old branches are pruned after each time of harvesting. The planting method for Taiwan morus macroura is provided, the problem that morus macroura fruits are prone to falling off in the planting process of the Taiwan morus macroura can be effectively solved, and economic benefits of planting are increased.

A cultivation method improving sorghum yield comprises the steps of seed treatment, field planting, field management and water and fertilizer management. The method is characterized in that in seed treatment, organic seed clothing special for sorghum is conducted on sorghum seeds, wherein a seed coating comprises actinomycin, bacillus mucilaginosus, azospirillum brasilense, infusorial earth, carry powder, heteroauxin, potassium sulphate, magnesium sulfate, zinc sulfate, alpha-pimacol growth regulator, EDTA-2Na chelating agent, humic acid and turf.

The invention relates to a tuberous root crop harvester. The tuberous root crop harvester comprises a rack, a digging shovel and a collecting box, wherein the digging shovel is installed at the front end of the rack through a digging shovel supporting plate. The tuberous root crop harvester is characterized in that the tuberous root crop harvester further comprises a soil removing device, a scraper elevator, a transverse conveying belt and a root cutting device; the digging shovel, the soil removing device, the scraper elevator and the transverse conveying belt are arranged on one side of the rack from front to rear, and the root cutting device and the collecting box are arranged on the other side of the rack from front to rear; the digging shovel supporting plate is connected with the soil removing device through a bridge and the transverse conveying belt is transversely connected with the root cutting device. The harvester is suitable for tuberous crops such as onions and garlics, can realize digging, soil removing and root cutting functions, adapts to the characteristics of the tuberous root crops, solves the problem of segmental operation of harvesting, soil removal and root cutting at present, realizes combine harvesting, can complete operation processes needed after the tuberous root crops are harvested, and improves the harvesting efficiency.

The invention discloses a cucumis metuliferus cultivation method comprising the steps of seed treatment, seeding, and growth and development period management. The method is simple to operate. The growth and development periods are managed reasonably and scientifically. The seed germination rate is increased, the quality and quantity of flower buds are increased, and the fruiting rate is increased.

The invention provides a method for reducing fruit drop of Xanthoceras sorbifolia Bunge during young fruit period. The method comprises the following steps: applying 40-60ppm naphthyl acetic acid to fertile flowers with dosage of 500-800 L per acre in the full bloom stage of Xanthoceras sorbifolia Bunge tree; and not irrigating the Xanthoceras sorbifolia Bunge tree within 45 days from the sprouting period to the dilating period. By the method, the fruit setting rate of Xanthoceras sorbifolia Bunge can reach 70-90 percent. The method is suitable for Xanthoceras sorbifolia Bunge planting regions with annual rainfall less than 350 millimeters.

The invention relates to the technical field of planting, in particular to a method for improving Fortunella margarita coloring. The method for improving Fortunella margarita coloring includes: adopting different fertilizers to perform topdressing and spraying Fortunella margarita trees with an initial stage liquid fertilizer, a Fortunella margarita colorant and a fruit protective nutrient solution during a fruit expansion period and different coloring rate stages; and adopting ultraviolet lamps to perform supplementary illumination, and acquiring orange red and beautiful Fortunella margaritafruits having high coloring rate. The fruit dropping rate is controlled at a low level, and economic losses due to fruit dropping during a mature period of the Fortunella margarita fruits. The coloring rate of Fortunella margarita fruits processed by the method can reach about 98.6%, and the Fortunella margarita fruits are orange red and glossy, and are regular in shape; and the taste of the Fortunella margarita fruits is improved.

The invention relates to an additive for a flush applied fertilizer and a preparation method thereof. The additive comprises 2.5 to 7.5 percent of 2, 4-D, 5 to 10 percent of indolebutyric acid, 5 to 12.5 percent of naphthyl acetic acid, 2.5 to 7.5 percent of amino acid, and 62.5 to 85 percent of solvent. The method solves the technical problems of low absorption and utilization rate of the flush applied fertilizer in the background technique, and the naphthyl acetic acid can make plants grow more main roots in a short time, and is favorable for growth of capillary roots; and the naphthyl acetic acid is auxin plant-growth regulator, has activity of auxin, can be absorbed by the plants and transported, and can be accumulated in nascent tissues to achieve remarkable promoting functions on end growth and development of the roots, so that the roots are straight and thick and have few branch roots, and the additive is used for improving nutrition absorption rate of the plants.

The invention discloses a method for increasing flowering and setting efficiency of potato, comprising: selecting virus-free seed potatoes, and soaking mid-late ripening material with gibberellin in early January; planting each whole seed potato in a single pot, and filling each pot with matrix that is from fine soil, vermiculite and coconut coir at a ratio of 7:1:2; setting up a plant-fixing frame, fixing three rods around each pot, and twining with nylon cords; treating nitrogen fertilizer and a growth regulator, to be specific, applying nitrogen fertilizer to each pot upon seedling emergence, watering for leaching, and after supplement of the nitrogen fertilizer, spraying the plant growth regulator; increasing humidity before pollination, collecting pollen, and burying pistil stigmas in pollen piles for pollination; after pollination, spraying naphthylacetic acid and carbendazim mixed liquid to inflorescences; pruning weeds to 50 cm and below in mid-May. The method allows crossbreeding to be carried out in southern low-altitude areas; flowering phase is adjustable, such that chances for making up specific crosses are increased; setting efficiency is high.

The invention discloses a pitaya planting bracket, which comprises a pair of cement or brick upright columns arranged at both ends of two rows of pitaya trees. The cement or brick upright column is provided with bracket bodies which extend out of both sides of the upright column. Meanwhile, two ends of the bracket body are provided with a pair of trusses, and branches of the pitaya tree are arranged at the truss. Provided with the pair of cement upright columns and the pair of trusses arranged at two sides of the cement upright column, the pitaya planting bracket has the advantages that the pitaya tree can be fixed and supported, and the support effect is good, thereby preventing the pitaya close to the ground against rot; the pitaya tree can be sheltered from the wind and the fruit-drop phenomenon can be avoided, thereby improving the fruit set percentage and the excellent fruit rate of the pitaya.

The invention discloses a loquat fruiting period foliar fertilizer and a preparing method thereof and belongs to the technical field of crop planting fertilizers. The foliar fertilizer comprises the following main raw materials: scutellaria baicalensis, folium artemisiae argyi, houttuynia cordate, lithospermum, andrographis, urea, borax, monopotassium phosphate and naphthylacetic acid. The raw materials have a synergistic effect after being scientifically proportioned, and effective components, such as volatile oil, houttuyfonate and flavonoid compounds, in Chinese herbal medicines have great sterilizing and fruit protecting effects on loquat trees; and the naphthylacetic acid is a broad spectrum type plant growth regulator and can promote loquat fruit growth, prevent fruit drop and improve the quality of loquat fruits. The preparing method of the foliar fertilizer is simple. The foliar fertilizer has remarkable sterilizing and fruit protecting effects, causes no pollution to the environment, provides necessary nutrients for the growth of the fruits, promotes the growth of the loquat fruits, reduces the morbidity of the loquat fruits, prevents fruit drop, and is worthy of popularization and application during production.

The invention relates to a method for extracting nutritional organic fertilizer from lepidium latifolium. The method comprises steps as follows: (1) dried and cut lepidium latifolium is subjected to water extraction or alcohol extraction, and an extracting solution is obtained; (2) the extracting solution is subjected to reduced-pressure concentration, and a concentrated solution is obtained; (3) the concentrated solution is subjected to cold storage and centrifugal impurity removal and then subjected to filling and boxing, and the nutritional organic fertilizer is obtained. The method adopts a simple process and is low in cost, nonhazardous, pollution-free and easy to implement, and the product is suitable for being applied to crops, fruits, vegetables, trees and the like.

The invention discloses an agent for improving the fruit setting rate and yield of macadamia nuts and a preparation and use method. The agent for improving the fruit setting rate and yield of macadamia nuts is prepared from a first agent, a second agent and a third agent, the first agent is characterized by being prepared from zeatin, gibberellin, alpha-naphthylacetic acid, compound sodium nitrophenolate, soya bean lecithin, sunflower lecithin, borax, monopotassium phosphate, sodium humate and microelement fertilizer, wherein the first agent is used for improving the fruit setting rate of macadamia nuts; the second medicament is characterized by reducing the fruit dropping rate of macadamia nuts and is prepared from brassinolide, 6-benayl aminopurine and sodium citrate; the third agent is an organic chelated sugar alcohol calcium leaf fertilizer and is characterized by reducing the cracking rate of macadamia nuts; under the synergistic effect of the first agent, the second agent and the third agent, the fruit setting rate of the macadamia nuts can be increased, the fruit dropping rate and the fruit cracking rate are reduced, and the yield of the macadamia nuts is increased.

The invention discloses a planting method of winter peaches. The method comprises the steps of soil selection, selection of planting density, selection of a cultivation method, pruning and shaping, fertilizer and water management, flower and fruit management and prevention and control of diseases and pest. The planting method of the winter peaches comprises the following steps that during soil selection and selection of the planting density, the winter peaches are high in adaptability and resistant to drought and infertility, can be successfully planted in fields, mountains and hills and growwell in acid or slight alkali soil, slight slopes and hills with purple soil and yellow soil and areas with a good drainage condition are preferentially selected, and in order to achieve fruit bearingin advance and increase the early yield, dwarf compact planting cultivation needs to be conducted. The flat ground is properly set to have the width of 2.5 m and the length of 3.5 m, the slope is properly set to have the length of 3 m and the width of 2 m, according to the cultivation method, from November each year to the last ten days of January next year, pond building and field planting are conducted, the width of a pond is 80 cm, and the depth of the pond is 70 cm. The bottom of the pond is sterilized, before pond returning, quicklime is spread to the bottom and periphery of the pond, the sterilization and disinfection function is achieved, through prevention and control of diseases and pests, the winter peaches can be effectively subjected to disease and pest protection, and the production yield is increased.

The invention discloses a composite fertilizer applicable to planting cherry tomatoes and a preparation method thereof. A base fertilizer is prepared from the following steps of mixing crop straws into animal wastes; after composting, mixing superphosphate, biological bacterial fertilizer, citric acid and humic acid; uniformly stirring, wherein the usage amount of the base fertilizer is 500 to 1,000 kg / mu. A mid-term fertilizer is prepared from the following steps of uniformly stirring rapeseed meal, biological bacterial fertilizer and high-potassium composite fertilizer according to the parts by weight to form a mixture; pelleting through a pelletizer after drying, wherein the mid-term fertilizer is applied semimonthly, and the usage amount of the mid-term fertilizer is 20 to 40 kg / mu per time. A foliage fertilizer is prepared from the following step of uniformly stirring monopotassium phosphate, sugar alcohol, micro elements fertilizer and water according to the parts by weight to form a mixture, wherein the foliage fertilizer is sub-packaged into plastic barrels according to the quantity, and is applied every 20 days, and the dosage of the foliage fertilizer is 10 to 20 kg / mu per time. According to the invention, different composite fertilizers are prepared according to the growing steps of the cherry tomatoes, so that the yield and the sugar degree of the cherry tomatoes are improved, the color is uniform, and the quality of fruits is improved. Therefore, the green and organic cherry tomatoes with good conditions, excellent taste and no pollution are obtained.

The invention discloses a labor-saving winter jujube girdling method. The method comprises the steps of selection of girdling time, wherein girdling is conducted at the beginning of full blooming or 1 / 3 flowering season of a whole tree and when the weather is sunny within three days and the average daily temperature is stable at about 25 DEG C; girdling position pretreatment, wherein two secondarybranches are left on the lower portion of a main branch, girdling is conducted on the portion, 20 cm or above away from branches, above the two secondary branches, for the girdling mode, a girdling device is adopted for rotating around the branches for a circle, and tree body girdling is completed rapidly; girdling aftertreatment, wherein an insert control agent is applied to a girdling opening,a thin film is used for winding around the girdling opening for two circles, then an iron wire is used for binding the thin film clockwise for two circles, after about 60 days, the iron wire and the thin film are removed, and then an anti-corrosive band is used for binding for two circles to promote healing. Accordingly, by selecting the girdling position, selecting the girdling device and adopting the iron wire for binding in girdling aftertreatment, the phenomenon that the girdling opening heals too early can be prevented, the branches can be inhibited to grow vigorously, fruit falling is prevented, the fruiting rate is increased, 1 / 3 of the cost of girdling workers can be reduced, and the effect is significant.

The invention relates to the technical field of citrus reiculata Blanco planting, and particularly discloses a cultivation method for reducing stiff fruits and big and small fruits generated in the fruiting period of citrus reiculata Blanco, and the cultivation method comprises a fruiting flower bud and next-year fruiting mother branch cultivation method and a fertilization improvement method; the fertilization improvement method comprises the steps of spraying a flower promoting and strengthening foliar fertilizer and applying a root fertilizer, wherein the spraying of the flower promoting and strengthening foliar fertilizer comprises the steps of spraying a foliar fertilizer I in a flower bud differentiation stage and spraying a foliar fertilizer II in a flower bud stage. According to the cultivation method for reducing stiff fruits and big and small fruits generated in the fruiting period of citrus reiculata Blanco, sufficient nutrients are more reasonably provided for all stages of plants, the root activity of citrus reiculata Blanco is improved, the nutrition of the upper portion and the lower portion of a tree body is adjusted, and the photosynthesis efficiency is improved through measures such as fruiting mother branch cultivation, root fertilizer application and foliar fertilizer application in different periods; therefore, flower bud differentiation is promoted, pollen activity is improved, fruit development is facilitated, the stiff fruit rate is reduced, fruit expansion is promoted, large and small fruits are reduced, and the quality and yield of citrus reiculata Blanco are improved.

The invention provides a fruit retention agent for litchis. The fruit retention agent is prepared from the following components in parts by weight: 50-100 parts of cytokinin, 5-30 parts of gibberellin, 15-35 parts of an anti-falling agent, 10-50 parts of borax, 3-6 parts of sodium salt, 20-50 parts of rare earth, 80-320 parts of amino acid, 60-180 parts of calcium acetate, 5-40 parts of fulvic acid and 10-30 parts of chlorophenoxyacetic acid. The fruit retention agent for litchi provided by the invention can prevent litchi fruits from dropping due to insufficient nutrients in the fruit settingperiod of litchi, improve the fruit setting rate of litchi, promote the growth of fruit stems and fruits, improve the quality of fruits, prevent abnormal growth of pulp, prevent fruits from crackingin the later period and realize a good fruit retention effect according to the growth and development characteristics of litchi.