36results about How to "Control leggy" patented technology

The invention discloses a multifunctional seedling cultivation substrate which comprises the components of EM fermented maize straws, perlite, vermiculite and prohexadione calcium, wherein the volume ratio of the EM fermented maize straws, the perlite and the vermiculite is 6: 3: 1, and the amount of the prohexadione calcium is 10-20g / m<3>. The multifunctional seedling cultivation substrate can control excessive growth of seedlings and can effectively prevent side effects of sprayed conventional growth inhibitors, and cultivated seedlings are superior to existing conventional seedling cultivation substrates in root activity, strong seedling index, yield and other aspects. Meanwhile, using amount of grass carbon is reduced, grass carbon resource saving is facilitated, and the purposes of resource utilization of agricultural wastes and environment pollution reduction are achieved.

The invention discloses a method for producing pre-basic seeds of potatoes. The method comprises the steps as follows: laboratory production of potato tube seedlings, sugar-free culture and fast propagation in a tube seedling greenhouse, and matrix and liquid culture for producing pre-basic seeds of potatoes. According to the invention, a polypropylene film bag takes the place of a traditional glass container, so that the light transmission and the air permeability are good, the cost is low, the weight is light, and the carrying is simpler; the mode of matrix and liquid culture achieves the purpose of propagating pre-basic seeds in a layered manner, so that not only can vain growth of the overground parts be controlled effectively, and growth and development of creeping stems of plants are ensured, but also forming and expanding of tubers at the top ends can be promoted effectively, and the operation is simple and easy; the pre-basic seeds can be grown in a plurality of seasons in a year, the quantity of potatoes borne in a unit area and the yield are improved greatly, the cost is reduced considerably, the propagation efficiency is improved, and industrial and mass production of virus-free miniature seed potato of potatoes can be realized.

The invention discloses an easy-to-absorb liquid fertilizer with a seedling expansion function. The easy-to-absorb liquid fertilizer is prepared from the following raw materials in parts by weight: 24-26 parts of sodium bicarbonate, 6-8 parts of light calcined magnesia, 4-5 parts of ginkgo leaves, 280-320 parts of powdery potassium silicate, 15-25 parts of chlormequat chloride preparation, 5-9 parts of tealeaf residues, 6-8 parts of egg shell meal, 4-6 parts of peeled bean pulp, 3-5 parts of pumpkin seeds, 2-3 parts of paraffin, 17-23 parts of potassium iodide, 8-12 parts of medical stone, 3-5 parts of brown sugar, 8-12 parts of a mepiquat-chloride preparation and 800-900 parts of an assistant. According to the liquid fertilizer disclosed by the invention, the problem of loss of microelement ions in soil is solved; the easy-to-absorb liquid fertilizer is abundant in raw materials; a plurality of nutrient elements are mixed to obtain the liquid fertilizer with high stability by a chelating method; nutrient components can be rapidly absorbed and utilized by crops in a form of ion state when the easy-to-absorb liquid fertilizer is used; and a good foundation is laid for high yield of the crops.

The invention provides a method for establishing and planting a zoysia and trifolium repens mixed lawn. According to the technical scheme, the technologies that germination is accelerated in warm water, seeds are soaked in liquid medicine, the mixed sowing ratio is scientific, the dry and wet seed sowing quantity conversion method and the layered sowing and layered covering method are adopted, the fertilization amount and the watering amount are controlled, and the temperature, the humidity and light are controlled through agricultural plastic mulching film punching are applied, synchronous germination of the grass seeds of the mixed lawn is guaranteed, and various conditions required from seedling growth to lawn generation are satisfied. The method comprises the steps of seed processing, mulching film punching, field preparation conducted before lawn establishment, sowing, control over the temperature and the humidity in the germination stage, maintenance of seedlings inside a mulching film and the like. The novel method for establishing and planting the zoysia and trifolium repens mixed lawn is capable of solving the problems that a cold-season lawn is high in maintenance cost and prone to degeneration and a warm-season lawn is short in green period, influences the green effect and is difficult to popularize.

The invention relates to the plant hybridization breeding and cultivation technology and provides a method for shortening the production period of mango. The method is characterized by comprising the following steps: 1) sowing seedlings and transplanting; 2) selecting polyembryonic varieties to be grafted trees, performing heading-back cut to grafted trees half treetop to use as stock; 3) selecting robust seedlings for grafting, top-grafting the seedlings on the stock of grafted trees; and 4) dressing multi-effect triazole in the soil, digging shallow ridges on the two sides of the tree covers of the grafted trees after grafting, irrigating multi-effect triazole and earthing. The invention has the following prominent substantive features and significant progresses: 1. seedling high grafting technology is adopted in the method so as to increase the grafting survival ratio; 2. the dressing multi-effect triazole technology is used to control the spindling of branch tips of grafts, promote the branch tips for aging and create beneficial nutrient conditions for advancing blossom and fruiting and promoting fruit-bearing; 3. the invention is simple and practical, potential hybrids can bear fruits after half a year so that potential hybrids and false hybrids can be identified directly and fast and the breeding process of mango is greatly shortened; and 4. the method of the invention can be popularized to the mango production so that the economic benefit of the method is remarkable owning to early fruiting and appearing on the market.

The invention provides a biotype seedling vitalizing agent. The prior conventional seedling vitalizing agent consists of a soil disinfection part, a soil acid regulation part and a nutrition part containing nitrogen, phosphorus and potassium and medium-trace elements, wherein germicides for soil disinfection are all prepared from chemical pesticide which is high in toxicity and not easy to decompose in soil, pollutes environment, and is not easy to operate, poor in safety and easy to cause seedbeds diseases and phytotoxicity, as well as serious loss. The soil acid regulation part of the conventional seedling vitalizing agent adopts zeolite, fly ash and other inorganic raw materials to adsorb acid. The composition of the biotype seedling vitalizing agent comprises biological germicides, chemical germicides, nutritional agents, acid and substances for controlling growth, wherein the weight portion of the biological germicides is 0.5 to 3.3; the weight portion of the chemical germicides is 0.35 to 1.2; the weight portion of the nutritional agents is 66 to 90; the weight portion of the acid is 7 to 30; and the weight portion of the substances for controlling growth is 0.012 to 0.06. The biotype seedling vitalizing agent is applied as an agricultural fertilizer.

The invention relates to the new technical field of fruit seedling breeding, in particular to a breeding method for achieving high-density and rapid breeding of mango seedlings. The method comprises the steps of selecting cup bags with the specifications of 16cm*22cm to serve as production nutrition bags, and achieving high-density seedling breeding of placing 50000 cup bags per 0.16 acre; starting to perform extra-root nutrient solution spraying after mango seedling tips emerging for a first time are aged in production management, performing spraying one time every 7-10 days, and continuing the operation until the mango seedlings can be grafted; when tips of the mango seedlings emerge for a third time, removing tender tips of the mango seedlings over third section, and removing all the new tips hereafter. Through the measurements, vain growth of the mango seedlings is effectively controlled, the mango seedlings grow thick, and a grafting link can be performed as early as possible. The whole process of breeding seeds to the commodity seedlings does not exceed a year. According to the method, the mango commodity seedlings appear on the market ahead of time by 1-2 years, the nursery seedling mergence number is more than two times larger than the seedling mergence number through a traditional seedling breeding method, and seedling breeding efficiency and generated economic benefits are extremely remarkable.

The invention discloses a rice seedbed conditioner and a production method thereof, belonging to the field of the production technology of a conditioner for raising rice seedlings. The method comprises the steps of uniformly stirring and mixing ammonium sulfate and potassium dihydrogen phosphate; mixing zinc sulphate monohydrate and humic acid, then adding paclobutrazol wettable powder, and uniformly stirring and mixing; uniformly mixing the two mixtures and the washed coal ash sandy soil; discharging, sieving, sub-packaging and packaging. By adopting the prepared rice seedbed conditioner, the pH value of the product is faintly acid due to the physiologically acid nutritive salt, thus the product is very suitable for the growth of the rice seedlings, and the content of organic matters in soil is increased; meanwhile, since humic acid contains an active multifunctional group, the germination rate of rice seeds can be improved, and the emergence rate and strong seedlings are promoted.

The invention provides an economical and efficient production method of a tobacco male sterile first generation hybrid seed. The method includes: at an altitude of less than 700 meters, under the climate conditions meeting the requirements of early vegetative growth and later reproductive growth of tobacco plants, conducting seedling culture on a maternal tobacco plant and a paternal tobacco plant separately, then employing isolation planting, performing topping on the maternal tobacco plant, then collecting paternal pollen and preparing pollination, during pollination, adding starch and blending them, adopting an artificial pollination pen or pollination gun to perform pollination, carrying out deblossoming on the maternal tobacco plant both before and after pollination, and when the capsule pericarp browning reaches more than 80%, conducting single fruit harvesting in batches and performing drying, then conducting threshing processing to obtain the male sterile first generation hybrid seed. The method provided in the invention has the advantages of reasonable design, low production investment, and high seed yield. On the basis of ensuring a variety purity (99%) and a seed germination rate (95%), maximization of a high-quality germplasm propagation coefficient is realized, the seed yield is greatly improved, and the seed production cost is decreased significantly.

The invention belongs to the technical field of plant seedling culture, and particularly relates to a beet paper tube seedling culture transplanting and multiple-cropping method. The multiple-croppingmethod comprises the following steps of seedling culture bed manufacturing, seedling culture soil manufacturing, seedling culture soil pretreatment, paper tube seeding, seedling culture bed management, transplantation following wheat harvest and field management. A warm area for planting winter wheat is used; the light and heat resources are rich; the land after the wheat harvest is unused; a paper tube seedling culture transplanting technology can be used for multiple-sowing of one season of beet; the effective resource utilization can be realized; the multiple-cropping index can be improved; the goal of increasing the agricultural production value is achieved; meanwhile, the multiple-cropping method is simple; the implementation is easy.

The invention discloses a liquid fertilizer with seedling strengthening and silicon absorption promoting functions. The liquid fertilizer is prepared from raw materials in parts by weight as follows: 7-9 parts of dregs of sweet wormwood herb,9-15 parts of whey powder, 3-4 parts of wintergreen oil, 8-12 parts of a mepiquat chloride preparation, 6-8 parts of biogas slurry, 11-15 parts of fermented sorghum stems, 20-30 parts of sodium molybdate, 15-18 parts of zinc chloride, 9-14 parts of calcite, 5-7 parts of Japanese hop herb, 280-320 parts of powdery potassium metasilicate, 15-25 parts of a chlormequat chloride preparation, 5-8 parts of lanthanide rare earth, 4-6 parts of animal bone protein and 800-900 parts of an auxiliary agent. The liquid fertilizer solves the problem that effective silicon in traditional silicon fertilizers is not sufficiently converted and released in soil, stable silicate ions are formed through chelation of alkaline potassium silicate and trace elements, crops can absorb silicon better after the liquid fertilizer is used, growth of roots of the crops is facilitated, and the stress resistance is increased.

The invention discloses a flower-promoting foliar fertilizer for flat land cultivation of Cymbidium hybridium and relates to fertilizers. The foliar fertilizer contains the following ingredients in parts by weight: 30 to 60 of dipotassium hydrogen phosphate, 20 to 60 of diammonium hydrogen phosphate, 30 to 70 of magnesium sulfate heptahydrate, 60 to 120 of calcium nitrate tetrahydrate, 0.1 to 1 of boric acid, 0.05 to 0.1 of ammonium molybdate, 3 to 6 of disodium ethylenediaminetetraacetate, 2 to 6 of ferric sulfate heptahydrate, 0.2 to 1.0 of zinc sulfate heptahydrate, 0.2 to 1.0 of manganese sulfate tetrahydrate, 10 to 20 of Paclobutrazol and the balance of water. The preparation method of the foliar fertilizer comprises the following steps of: (1) preparing 500-times to 1000-times concentrated solution D of ferric sulfate heptahydrate, disodium ethylenediaminetetraacetate, boric acid, ammonium molybdate, zinc sulfate heptahydrate and manganese sulfate tetrahydrate; and (2) mixing other ingredients with the concentrated solution D to obtain the final product. The foliar fertilizer contains necessary nutrients for plants, supplies micro-elements to plants, enhances stress resistance and disease resistance and has good flower-promoting effects. The foliar fertilizer is applied to leaves and rapidly absorbed by plants, leading to rapid onset of action. The fertilizer is fully utilized with less loss and less immobilization.

The invention discloses a ripping and ventilating liquid fertilizer with a seedling expanding function. The ripping and ventilating liquid fertilizer is prepared from the following raw materials in parts by weight: 26-30 parts of calcium carbonate, 4-6 parts of potassium epsom salt, 6-7 parts of diatomaceous earth, 10-13 parts of oil cake, 3-5 parts of folium artemisiae argyi, 280-320 parts of powdery potassium silicate, 15-25 parts of chlormequat chloride preparation, 8-10 parts of mixture of rice chaff and husk, 6-9 parts of chitosan, 33-37 parts of potassium nitrate, 5-8 parts of zircon sand, 9-13 parts of rape seed cake, 2-4 parts of saponin, 8-12 parts of a mepiquat-chloride preparation and 800-900 parts of an assistant. The liquid fertilizer disclosed by the invention is stable in property, and abundant in nutrient elements, meets the requirements in various stages of crop growth, contains a lot of bioactive components, and is capable of quickly improving the microbial environment of the soil, increasing soil gaps and improving the ventilating and fertilizer-protecting capabilities of the soil after being applied.

The invention provides a high-yield anti-disease potato planting method and relates to the technical field of vegetable planting. The high-yield anti-disease potato planting method comprises the following steps: (1) selecting a variety; (2) storing and selecting seed potatoes; (3) cutting the seed potatoes; (4) sterilizing the seed potatoes, and performing germination acceleration; (5) drying potato pieces in air; (6) selecting and preparing a land; (7) sowing seeds; (8) performing field management; and (9) harvesting potatoes. By adopting the method, the problems that potatoes planted by using a conventional potato planting method are high in morbidity, poor in quality and low in yield are solved.

The invention discloses a blending medicament preventing and curing cercospora brown spot of peanut, comprising the following materials in parts by weight: 1-10 parts of diniconazole, 1-10 parts of carbendazim, 1-20 parts of GZM and 1500-24000 parts of water. The preparation ratio of diniconazole to carbendazim to GZM is 1:1:1-2, and the mass fraction ratio of mixture to water is 1:500-600. In the invasion initial stage of brown blotch, blending medicament is sprayed twice at the medicament spraying interval of 10-14 days. The invention can effectively prevent and cure cercospora brown spot of peanut, can obviously control peanut excessive growth, improve bean yield, perform the dual action of obviously preventing disease and inhibiting growth, and perform the function of one medicine with multiple purposes. In addition, pesticide dosage is reduced to lighten environment pollution and bring benefits for ecological balance. Physical protective agent GZM is added to perform certain physical protection action on peanut plants, prolongs pesticide effect time and reduces application times.

The invention discloses a cultivation method for increasing content of nutrients in Toona sinensis and relates to the technical field of planting of Toona sinensis. The cultivation method comprises the steps of treating seeds, growing seedlings, preparing a field, transplanting, managing the field, carrying out temporary planting, setting up a shed, moving the plantlets into the shed, and harvesting. Tender shoots and leaves of Toona sinensis cultivated via the cultivation method have good color, strong fragrance, good taste, high nutrient content, rich nutrients, such as proteins, vitamins and selenium, and good quality; nutritional health value of Toona sinensis is enhanced, and economic value is improved.

The invention discloses a flower stimulator for fructus momordicae and a using method thereof. The flower stimulator for the fructus momordicae is the flower stimulator formed by mixing mepiquat chloride and allantoin, and proportion by weight of the mepiquat chloride to the allantoin in each liter of an aqueous solution is 0.5-2.5: 0.5-2.0. The using method for the flower stimulator for the fructus momordicae comprises the following steps: after a tissue-cultured seedling strain of the fructus momordicae climbs a shed, secondary or third lateral bines perform the vain growth and exceed to 18 sections, the budding still cannot be realized, the pruning is greatly performed, and only 4 to 5 sections are retained; and the flower stimulator for the fructus momordicae with a concentration of containing 500 to 2500mg of the mepiquat chloride and 500 to 2000mg of the allantoin in each liter of mixed liquid is sprayed on leaf surfaces for two times in the evenings of rainless days, the interval time is between 7 and 10 days, and the spraying is stopped when the leaf surfaces are evenly moistened and have slight liquid drops. The flower stimulator for the fructus momordicae can effectively control the vain growth and promote the budding and blossoming. A mixed preparation of the invention has low cost and convenient use, is safe and non-toxic to soil ecology as well as people and animals, and is environment-friendly.

The invention provides a potato cultivation method, which relates to the technical field of vegetable cultivation. The potato cultivation method comprises the following steps: (1) variety selection; (2) seed potato treatment; (3) seed soaking and germination acceleration; (4) soil preparation; (5) Sowing; (6) Field management; (7) Harvesting. The invention solves the problems of high morbidity, poor quality and low yield of potatoes cultivated by the existing potato cultivation method.

The invention discloses an alpine region virus-free potato cultivating method, and belongs to the technical field of crop cultivation. The technology problem or defect that an alpine region is small in rainfall and potato soil moisture content is poor is solved or overcome. By means of the method, through potato seed selecting and processing, soil preparation and fertilizer applying, ridging and sowing, and field management, when potatoes are planted in the alpine water-deficient region, water conservation and moisture preservation can be achieved, water resource utilization rate can be increased, and produced potatoes are good in quality, high in starch content and capable of being stored for a long time.

The invention relates to a preparation method of a special biological astaxanthin nutrient solution applied to dendrobium officinale kimura ex migo. The formula of the special biological astaxanthin nutrient solution comprises the following components in percentage by weight: 2.7-3.7% of valine, 2.8-3.8% of sodium molybdate, 2.9-3.7% of lysozyme, 3.2-4% of a turnera diffusa extract, 3.1-3.9% of menadione dimethylpyrimidinol bisulfite, 2.8-3.7% of bacillus lentus, 0.1-1.1% of manganese carbonate, 1.5-2.5% of a snake gall extract, 0.3-1.3% of nervilia fordii, 1.3-2.3% of a sophora alopecuroidesextract, 0.6-1.6% of daphniphyllum calycinum, 1.1-2.1% of an artichoke extract, 2.6-3.6% of bifidobacterium longum, 1.8-2.8% of ilex rotunda thunb, 2.1-3.1% of galactooligosaccharide, 2.7-3.7% of a pithecellobium clypearia extract, 1.9-2.9% of olive oil, 1.7-2.7% of highland barley flour, 0.6-1.6% of probiotics, 0.3-1.3% of astaxanthin and 44.6-63.9% of water. The special biological astaxanthin nutrient solution is capable of effectively providing nutrients needed by the growth of the dendrobium officinale kimura ex migo, accelerating the growth of seedlings, enabling the leaf surfaces to be glossy dark green and thick, controlling spindling of young shoots, accelerating dendrobium officinale kimura ex migo to be thick with leaves and deep-rooted, enhancing stress resistance and immunity of the dendrobium officinale kimura ex migo, improving soil activity, enabling dendrobium officinale kimura ex migo to be strong and enhancing the ornamental value of dendrobium officinale kimura ex migo.

The invention discloses a cultivation method of apocarya fruiting large container seedlings, and belongs to the technical field of forest seedling cultivation. The method comprises the steps of medium-container seedling cultivation, large-container cultivation, preliminary tree form pruning, grafting and three-year cultivation for fruiting. The method is high in transplanting survival rate and rapid in seedling growth. During outplanting, the ground diameter can reach 3.5-4 cm, the seedling height is 2.5 m or above, the crown breadth is 4 m or above, and the sizes are remarkably higher than that of field cultivated seedlings of the same specification for orchard establishment. By using large-specification root control container pieces for seedling raising, a large number of fibrous roots are promoted in the growth process of seedling roots, and meanwhile, through two measures of transplanting seedlings into a middle container and then transplanting the seedlings into a large container,excessive growth of main roots is controlled through two times of root cutting treatment. The large-container seedlings cultivated by adopting the method for orchard establishment is high in plantingsurvival rate and remarkable in growth amount, fruits continue to be borne in the same year or the next year of planting, the effect of immediate orchard establishment is achieved, and the time fromorchard establishment to income acquisition is greatly shortened for planters.

The invention discloses a compound matrix for horseradish tree protected cultivation in an alpine region and a cultivation method. The compound matrix is prepared by mixing turf, river sand and waste mushroom matrixes. The cultivation method comprises the following steps of I, culturing seedlings in a cold region: (1) building a seedling culturing shed, paving terrestrial heat wires, and connecting a temperature controller; (2) pre-treating seeds; (3) filling soil; (4) seeding; (5) watering; (6) earthing; (7) managing; (8) exercising seedlings; II, planting seedling trees: (1) filling the compound matrix in a planting tank; (2) sprinkling profoundly water, coating a membrane, punching and planting the seedling trees; (3) pouring rooting water; (4) earthing again and fixing the seedlings when no water surrounds root holes. The raw materials of the compound matrix provided by the invention are rich and easy to obtain, and the cost is lower; the compound matrix has a better three phase ratio of soil, and the space structure and the nutrition supply are suitable for horseradish tree cultivation; the seedling culturing method can be beneficial to effectively improving the horseradish tree emergence rate and controlling the over growth of the seedlings; the planting method can be beneficial to greatly improving the planting survival rate and promoting the rapid growth of the seedling trees.

The invention provides a method suitable for strong seedling cultivation of pumpkin rootstock seedlings. The method comprises the following steps of S1, soaking pumpkin seeds with warm water, then soaking the seeds with a paclobutrazol solution with the concentration of 15-30 mg / L at room temperature for the second time, then sequentially performing washing and disinfecting, and accelerating germination until radicles are exposed and grow; S2, sowing the pumpkin seeds subjected to germination acceleration in a matrix with the relative water content of 50%-60% according to the sowing depth of 1-4 cm till the seedling emergence rate reaches 80% or above, and maintaining the relative water content of the matrix to be the initial water content during the period; and S3, performing watering management on the pumpkin seedlings after seedling emergence until the pumpkin seedlings grow to the first true leaf flattening stage or grow to the stage between the first true leaf flattening stage and the one leaf and one core stage. The method has the beneficial effects that the paclobutrazol solution with the concentration of 15-30 mg / L is adopted for soaking the pumpkin rootstock seeds; and when the sowing depth ranges from 1 cm to 2 cm, the plant height can be controlled to range from 3.5 cm to 5 cm, the strong seedling index Z2 is larger than 0.20, and the strong seedling index Z4 is larger than 41.

The invention relates to a fertilizer with high contents of phosphorus and potassium. The fertilizer is prepared from a phosphorus-containing compound and a potassium-containing compound, wherein the content of phosphorus in the fertilizer is 40 to 60% in terms of phosphorus pentoxide, and the content of potassium in the fertilizer is 40 to 60% in terms of an oxidizing agent. According to the invention, a non-conventional formula is employed to prepare the nitrogen-free fertilizer with excellent effect and high contents of phosphorus and potassium; the fertilizer can effectively control the growth of crops in an early stage and promote seedling hardening, rooting and blossom of the crops; in the later stage of the growth of the crops, the fertilizer can better promote expanding and coloring of fruit and accumulation of mesome substances in fruit and promote generation of growth activity substances, so the utilization rates of macroelement, medium elements and trace elements in crops can be substantially increased, and yield increase of the crops is realized; and the fertilizer is especially applicable to plants which do not need nitrogen in the whole growing period but have higher demands for phosphorus and potassium.

The invention provides an economical and efficient production method of a tobacco male sterile first generation hybrid seed. The method includes: at an altitude of less than 700 meters, under the climate conditions meeting the requirements of early vegetative growth and later reproductive growth of tobacco plants, conducting seedling culture on a maternal tobacco plant and a paternal tobacco plant separately, then employing isolation planting, performing topping on the maternal tobacco plant, then collecting paternal pollen and preparing pollination, during pollination, adding starch and blending them, adopting an artificial pollination pen or pollination gun to perform pollination, carrying out deblossoming on the maternal tobacco plant both before and after pollination, and when the capsule pericarp browning reaches more than 80%, conducting single fruit harvesting in batches and performing drying, then conducting threshing processing to obtain the male sterile first generation hybrid seed. The method provided in the invention has the advantages of reasonable design, low production investment, and high seed yield. On the basis of ensuring a variety purity (99%) and a seed germination rate (95%), maximization of a high-quality germplasm propagation coefficient is realized, the seed yield is greatly improved, and the seed production cost is decreased significantly.

The invention discloses a flower-promoting foliar fertilizer for flat land cultivation of Cymbidium hybridium and relates to fertilizers. The foliar fertilizer contains the following ingredients in parts by weight: 30 to 60 of dipotassium hydrogen phosphate, 20 to 60 of diammonium hydrogen phosphate, 30 to 70 of magnesium sulfate heptahydrate, 60 to 120 of calcium nitrate tetrahydrate, 0.1 to 1 of boric acid, 0.05 to 0.1 of ammonium molybdate, 3 to 6 of disodium ethylenediaminetetraacetate, 2 to 6 of ferric sulfate heptahydrate, 0.2 to 1.0 of zinc sulfate heptahydrate, 0.2 to 1.0 of manganese sulfate tetrahydrate, 10 to 20 of Paclobutrazol and the balance of water. The preparation method of the foliar fertilizer comprises the following steps of: (1) preparing 500-times to 1000-times concentrated solution D of ferric sulfate heptahydrate, disodium ethylenediaminetetraacetate, boric acid, ammonium molybdate, zinc sulfate heptahydrate and manganese sulfate tetrahydrate; and (2) mixing other ingredients with the concentrated solution D to obtain the final product. The foliar fertilizer contains necessary nutrients for plants, supplies micro-elements to plants, enhances stress resistance and disease resistance and has good flower-promoting effects. The foliar fertilizer is applied to leaves and rapidly absorbed by plants, leading to rapid onset of action. The fertilizer is fully utilized with less loss and less immobilization.