34 results about "Maidenhair Trees" patented technology

The invention relates to a plant wound protective agent containing chitosan oligosaccharide which contains chitosan oligosaccharide and one or more of a nutritional agent, an adjusting agent and a sterilizing agent, wherein the weight percentage of the chitosan oligosaccharide accounting for the protective agent is 0.0015-0.03 percent. The plant wound protective agent can be used for spraying or smearing. The prepared solid preparation for smearing also contains a film-forming agent. On one to five days before pruning, girdling or grafting, the wound is sprayed by using the protective agent; and on one to five days after the pruning, girdling or grafting, the wound is smeared by the protective agent, so that disease attacks of the wound can be reduced and the healing of the wound can be promoted. The plant wound protective agent is used for apple trees, pear trees, peach trees, jujube trees, grape trees, mango trees, longan trees, lychee trees, citrus trees, watermelon, maidenhair trees, honeysuckle, Arabian jasmine flower and Chinese rose.

The invention discloses a method for preparing biological activated carbon from waste maidenhair tree leaves and folium ginkgo herb residue. The method comprises the following steps: washing the maidenhair tree leaves or the folium ginkgo herb residue with water for several times till the washed water is clear, so as to obtain materials I; washing the materials I with distilled water, so as to obtain materials II; mixing the materials II with an activating agent solution; carrying out impregnating for 2 to 24 hours at the room temperature; putting into a muffle furnace; heating to 300 to 800 DEG C; carbonizing for 0.5 to 3 hours; cooling to the room temperature; washing with a hydrochloric acid solution; washing with distilled water to obtain a neutral semi-product; drying the semi-product; grinding the dried semi-product to obtain the biological activated carbon. The method has the advantages that the preparation technology is simple, clean and environment-friendly; the cost is low; not only is waste changed into valuable, but also the obtained biological activated carbon is uniform in texture, large in pore space, relatively large in specific surface area, and excellent in capability of adsorbing organic pollutants (such as methylene blue and phenol) and heavy metal ions (Cu<2+>), and can be applied to the technical field of industrial wastewater treatment.

The invention provides a south-north transfer method for maidenhair-trees which comprises, carrying out exercise treatment to the ginkgo seeds so as to facilitate the cracking of the seeds, spreading the seeds uniformly onto the dressed bed surface through the modes of dot seeding or row seeding, filling antifreeze water to the ginko seed bed, burying the ginko seedling with soil or sand and covering with straw curtains for cold-proofing, unfreezing the filled water to the ginko seed bed in spring at 5-10 deg. C, removing cold-proof soil, sand and plastic foil bundled layer, finally carrying out transplanting.

The invention belongs to the technical field of plant cultivation, and particularly relates to a grafting method by utilizing maidenhair tree roots as stock so as to improve maidenhair tree reproduction. The method is characterized by comprising the following steps: (1) taking a selected grafting stock plantlet trunk as the center, semi-cutting the root system along the periphery with the radius of 0.5-1m, wherein the hair roots are not cut off as much as possible; (2) taking a main root as stock and remaining shoot roots, cutting off one second root at an interval of one, selecting a root system of 0.5-2.0cm, or selecting second roots with two main roots; (3) lifting the cut root system to be 5cm above the ground, backfilling the dug root soil and stepping on the soil, and straightening the selected grafting stock root with soil; (4) performing grafting after the stock root is grafted for 4-6 hours when water on the cut surface does not exude. According to the grafting method, the cleft grafting method and the cut-grafting method are adopted. The method disclosed by the invention has the benefits that the maidenhair tree reproduction efficiency is improved, and the survival rate is improved to be 98.2%.

The invention provides a rapid seedling method for maidenhair trees, and relates to the technical field of nursery stock breeding. The method includes the following steps of: (1) soil improvement: turning over a land to be sown, and evenly applying a soil improvement agent to the surface of soil after turning over, wherein the amount of the soil improvement agent is 85 Kg per mu, a rotary cultivator can be used to smash and level the soil, and the leveled land can be used to sow; (2) seed germination accelerating: selecting seeds during early and middle of February, and putting the selected seeds into an insulating germination accelerating box to accelerate germination, wherein the seeds can be used to sow when the length of the radicle is identical to that of a seed stone; (3) sowing: completing sowing before spring equinox and sowing 2.5 ten thousand stains of seedlings per mu; and (4) management after sowing: keeping a seedbed wet before seedlings come up out from the ground, and managing the seedlings by adoption of the conventional method after seedling hardening. According to the rapid seedling method for the maidenhair trees, the sprouting rate of the seeds can be improved, the improved soil is loose and breathable, and the fertilizer maintenance ability is high; the growing period is prolonged, the growing speeds of roots and stems of the seedlings are fast, and the rapid seedling method for the maidenhair trees can improve the economic benefits of maidenhair seedling.

The invention discloses a cultivation method for effectively interplanting gingko trees, date trees, peanuts and spinach. According to the cultivation method, gingko trees and date trees are interplanted in autumn, and peanuts and spinach are interplanted respectively in early spring, autumn and winter every year from the following year. Compared with an ordinary gingko tree planting garden plot with ordinary gingko trees only, gingko trees and date trees grow well, the rate of survival reaches more than 98 percent, the yield of peanuts is 90kg-120kg per mu per year, and the yield of spinach is 500kg-600kg per mu per year. Output value per mu of a farm is increased while normal growth of gingko trees is ensured, and good economic benefit is achieved. In addition, the interplanting method is simple, low in cost, convenient to operate and easy to popularize.

The invention provides a method for introducing maidenhair trees to areas to the north of Shenyang and provides a detailed description in the aspects of tree species selection, planting land selection, transplanting time selection, tree-obtaining method, heat-preservation measures, plants acclimatization and regularly maintaining and the like. The method guides us to introduce the southern tree species sucessfully, fills a historical gap in the transplantation of maidenhair trees in the areas to the north of Shenyang and adds first-class greening tree species to the northeast China region.

The invention discloses a seedling growing planting method of maidenhair trees, and belongs to the field of planting. The method particularly comprises the following steps of 1, seed collection; 2, seed soaking; 3, bud forcing treatment; 4, sowing and seedling growing; 5, finished healthy and strong seedling cultivation; 6, transplanting planting; 7, management after planting. All the steps are reasonable in matching, cultivated finished healthy and strong seedlings are good in physique and high in resistance, can still normally survive in seriously salinated soil and is good in nutrition absorption and conversion property, the utilization rate of fertilizer can be increased, the problems that in the prior art, the fertilizer applying amount is too large, and soil is hardened are gradually relieved, and planting improvement of the maidenhair trees returns to sound development. Flavonoid compounds in the finally cultivated maidenhair trees are large in content, and high economic value is achieved.

The invention relates to a transplanting method of maidenhair trees with multiple branches. The method includes the steps of digging operation, wherein an annular machine base is installed around eachmaidenhair tree with multiple branches, a rotating mechanism on the machine base drives a suspension arm to rotate, a spader on the front end of each suspension arm is driven by a hydraulic oil cylinder to achieve digging, and a screw-in mechanism can fix the corresponding machine base to the ground; packaging and hoisting, wherein soil balls after excavation and shaping are packed and wrapped tightly and densely by hemp ropes; the hemp rope layers are wrapped by straw ropes after the straw ropes are soaked in a nutrient solution, the straw ropes are tightly and densely wrapped by shrinkabletape, the outer most layers of the wrapped soil balls are covered by tuck nets, and then the soil balls are hoisted from the ground by corresponding lifting hooks; transport operation, wherein the hoisted soil balls are placed in a soil ball container on a transport vehicle; transplanting management, wherein root fixing water is sprayed once every week, clean water is sprayed five weeks later, andafter transplanting, nitrogenous fertilizer is applied once separately after four months, five months and six months. According to the transplanting method of the maidenhair trees with the branches,by decreasing or increasing the quantity of the machine bases, the range of a digging area can be adjusted, the transplanting method is applicable to maidenhair trees which are different in age limitand size and have multiple branches, can effectively protect the root systems of the maidenhair trees and greatly increase the survival rate of transplanting.

The invention discloses a rectifying device for ginkgo tree planting, which comprises a fixed column, a left base and a right base. A cylinder is fixedly arranged inside the fixed column, and the cylinder is connected with a telescopic rod. The telescopic rod is fixedly provided with a rotating disk, and a correction fixture is fixedly installed on the rotating disk, an anti-slip block is installed on the top of the correction fixture, and the surface of the anti-slip block is fixedly provided with anti-slip threads, and a tool cabinet is fixedly provided at the bottom end of the fixed column, and the tool cabinet A side door is provided on the surface of the left base, an iron chain is connected between the left base and the right base, and the right base is fixedly arranged on the right side of the left base, and a fixed column is installed on the top of the left base and the right base, and the fixed column A through hole is arranged on the top, and a switch is fixedly arranged at the lower right corner of the through hole. The correcting device for planting ginkgo trees can facilitate the correction of ginkgo trees of different thicknesses, has a simple structure, is easy to operate, and meets the needs of use.

The invention discloses a device for tying dendrobium officinale to a maidenhair tree. The device comprises a maidenhair tree body and a plurality of material bags which are tied to the maidenhair tree body, the trunk of the maidenhair tree extends to form a plurality of branches, the plurality of material bags are arranged on each branch, moss which is used for growth of the dendrobium officinale is attached to each material bag, a water pipe which is communicated with a water flow channel and towers above the tree top is arranged on the trunk of the maidenhair tree body, the top end of the water pipe is connected with the water flow channel by the aid the supports on two sides, the bottom end of the water pipe is connected with an electric water pump, a plurality of water praying pipes are uniformly arranged at the lower part of the water flowing channel, and a rotary water sprayer is arranged at the bottom of each water spraying pipe. The structure is simple, an automatic up and down spraying manner is adopted so that the phenomenon that spraying is in-comprehensive due to conventional spraying manners is avoided, the spraying effect is good, the cost is low, the fresh moss is attached to the surfaces of the material bags so that the roots of the dendrobium officinale are covered, the growing environment of the dendrobium officinale is protected, and the survival rate is high.

The invention relates to a plant wound protective agent containing chitosan oligosaccharide which contains chitosan oligosaccharide and one or more of a nutritional agent, an adjusting agent and a sterilizing agent, wherein the weight percentage of the chitosan oligosaccharide accounting for the protective agent is 0.0015-0.03 percent. The plant wound protective agent can be used for spraying or smearing. The prepared solid preparation for smearing also contains a film-forming agent. On one to five days before pruning, girdling or grafting, the wound is sprayed by using the protective agent; and on one to five days after the pruning, girdling or grafting, the wound is smeared by the protective agent, so that disease attacks of the wound can be reduced and the healing of the wound can be promoted. The plant wound protective agent is used for apple trees, pear trees, peach trees, jujube trees, grape trees, mango trees, longan trees, lychee trees, citrus trees, watermelon, maidenhair trees, honeysuckle, Arabian jasmine flower and Chinese rose.

The invention discloses an efficient seedling growing and planting technology of maidenhair trees, and belongs to the technical field of fruit tree planting. The technology comprises the following steps: 1) preparing seeds; 2) preparing soil; 3) raising seedlings with the seeds; 4) and performing gingko seedling planting management. Using the method to plant maidenhair trees, germination period is short, germination rate in the same time is improved by about 10.8%, and buds are healthy and strong, and are high in height, good in quality, and good in performance. The method effectively ensures survival rate and survive quality of gingko seedlings, and manure gingko is high in yield, obvious in planting benefit increment, and income of farmers is obviously increased. Since a chemical applying process uses a continuous, spaced, and little amount method, gingko planted by the method can absorb sufficient nutrients in a growth process, and after the gingkoes are manure, individuals are relatively large, texture is fresh and tender, nutrition is rich, and edible value is high.

The invention discloses an inserted type biological fertilizer box used for a maidenhair tree. The biological fertilizer box can be directly inserted into soil around roots of the maidenhair tree for fertilization. Fallen leaves of the maidenhair tree are minced and decayed and then are mixed with cane trash, organic fertilizer, loam and ice cubes, and then earthworms are added into the mixture, so that a filling fertilizer is formed. Afterwards, the filling fertilizer is loaded into a conical shell, and then the biological fertilizer box can be inserted into the soft soil around the roots of the maidenhair tree to achieve fertilization. As through holes are formed in the conical shell, the earthworms can move around the roots of the maidenhair tree outside the conical shell to perform soil loosening and other activities which are beneficial to the soil, and fertilization and soil loosening can be achieved at the same time. In addition, the biological fertilizer box is quite convenient to use, and nutrients contained in the filling fertilizer are the closest to the requirements of the maidenhair tree. Besides, the holes are further formed in the conical shell, other fertilizer can be added regularly or irregularly, the biological fertilizer box directly acts on the roots of the maidenhair tree for fertilization, and therefore the fertilizer combination is novel.

The invention discloses a maidenhair tree planting matrix and a maidenhair tree planting system, relates to the technical field of urban road landscaping and aims at solving the technical problem that an existing planting matrix structure cannot meet the growth demand of maidenhair trees and easily causes poor growth, premature senility and death of the trees. The maidenhair tree planting matrix comprises filling particles and formula soil, wherein the mass ratio of the filling particles to the formula soil is 1 to 1-2. The filling particles can effectively ensure the porosity of the planting matrix and accordingly is conductive to breathing and water fertilizer absorption of maidenhair tree root systems, and the formula soil can provide certain nutrients for the maidenhair trees. Due to the fact that the proportion of the filling particles to the formula soil is appropriate, an appropriate growth environment can be provided for the maidenhair trees through matching of the filling particles and the formula soil, and the maidenhair tree planting matrix and the maidenhair tree planting system are conductive to effective ensuring of healthy growth of the maidenhair trees and long-term playing of the service effect of an urban ecological system.

The present invention relates to antipruritic bath powder, the components of which comprise fineleaf schizonepeta, maidenhair tree, honeysuckle and safflower. The added weight portions of each component are 2 to 4 portions of the fineleaf schizonepeta, 2 to 4 portions of the maidenhair tree, 4 to 6 portions of the honeysuckle and 1 to 3 portions of the safflower. The present invention is confected by Chinese traditional medicines purely, does not contain any western medicine component and has obvious effect towards cutaneous pruritus, eczema, tinea pedis and women colpitis, which can relieve itching immediately by being used once; at the same time, the present invention has the leisure health care functions of relaxing tendon, activating collaterals and eliminating fatigue, which is safe and convenient for using and does not have any side effect. The present invention can be sold in the bath industry.

The invention provides a special fertilizer for enhancing drought resistance of maidenhair trees. A recipe of the special fertilizer comprises the following raw materials including 30 to 40 parts of urea, 50 to 60 parts of animal waste, 10 to 15 parts of aluminum sulfate, 20 to 30 parts of phosphatic fertilizer, 10 to 20 parts of bovine-derived power, 30 to 40 parts of water-retaining agents, 40 to 45 parts of animal viscera, 10 to 15 parts of straws, 9 to 15 parts of curing agents, 50 to 80 parts of water and 1 to 5 parts of inorganic conditioners. A method provided by the invention specially aims at the main economic trees of semi-mountainous areas in China; the planting area is large; in the growth and development period of maidenhair trees, the limitation of climate conditions and environment conditions often exists; particularly, the influence of drought on the growth of the maidenhair trees is most obvious; when the drought is serious, the problem of maidenhair tree yield reduction or even no harvest can be caused; the drought resistance capability of the maidenhair trees can be greatly enhanced in a short time; meanwhile, the problem of low survival rate of the maidenhair trees is solved, so that the economic benefits are improved.

The invention discloses a natural pharmaceutical composition for treating diabetes, which is prepared from the following raw materials in percent by weight: 60-80% of maidenhair tree, 1-10% of juncus effusus, 5-15% of paddy seedlings and 5-15% of serissa japonica. The composition for treating diabetes is reasonable in formula, exact in curative effect, free of toxic or side effect after used for a long time, and has better prevention effects on diabetes complications, such as peripheral neuritis and diabetic foot, after taken by diabetic patients for a long time.

The invention discloses a building wall decoration biological material, which is characterized by including the following substances by weight: 35-45 parts of cement, 15-20 parts of Venerupis philippinarum shell powder, 14-20 parts of razor clam shell powder, 2-8 parts of quartz sand, 9-14 parts of potassium sulfate, 3-6 parts of anhydrous sodium sulfate, 1-4 parts of ammonia water, 9-15 parts of aluminum hydroxide, 4-6 parts of methyl fiber, 3-6 parts of maidenhair tree sawdust, 9-14 parts of ginkgo sawdust, 11-13 parts of fengqiao pine sawdust, 10-15 parts of a mixed solvent, and 3-9 parts of octanol. The building wall decoration biological material provided by the invention has the advantages of good environmental protection performance, no substance damaging human health, good thermal insulation performance, strong bonding performance, difficult shedding and cracking, long service life, and good sound insulation effect.

The invention discloses a modeling and shaping adjusting device for a maidenhair tree. The device comprises a frame body, wherein a plurality of branch and trunk limiting mechanisms are arranged in the frame body, each branch and trunk limiting mechanism comprises two sliding rods, two limiting rods, a locking piece and a limiting block, the two sliding rods are horizontally and oppositely arranged on the two sides of the frame body, the two limiting rods are movably connected between the two sliding rods, the two limiting rods can move horizontally along the sliding rods, the locking piece is used for fixing the positions of the limiting rods after the limiting rods move horizontally, the number of the limiting blocks is two, the two limiting blocks are arranged on the two limiting rods respectively, and the limiting blocks are movably connected with the limiting rods. According to the device, multi-angle bending shaping adjustment of branches and trunk of the maidenhair tree can be achieved through the multiple branch and trunk limiting mechanisms, and the shaping effect is improved; and moreover, the device is convenient to operate, has small damage to the branches and the trunk and can be suitable for shape adjustment of the branches and the trunk with different diameters.

The invention discloses a seedling fixing device for ginkgo tree planting, which comprises a first fixing fixture, a second fixing fixture and a fixing piece, sliding bars are arranged inside the two sides of the first fixing fixture and the second fixing fixture, and the One end of the second fixing fixture and the first fixing fixture pass through the fixing block, the sliding rod passes through the inside of the connecting rod, the connecting rods at both ends of the rubber splint are respectively provided with a fixing seat and a sliding groove, and The connecting rod and the rubber splint are integrally formed, the fixing seat is provided with a fixing rod, the two side surfaces of the fixing part are respectively provided with a sliding column and a fixing slot, and the fixing blocks are connected by a support rod. The seedling fixing device for ginkgo planting is provided with a first fixing fixture and a second fixing fixture, so that the ginkgo seedlings can be firmly clamped by bringing the two closer together, while the ginkgo seedlings are in direct contact with the rubber splint, Effectively prevents bark breakage.

The invention relates to a climbing device for landscape maidenhair tree pruning. The climbing device comprises a hand climbing assembly, a foot climbing assembly and a waist fixing assembly, wherein the hand climbing assembly and the foot climbing assembly are connected with the waist fixing assembly through connecting belts; the two hand climbing assemblies and the two foot climbing assemblies are the same in structure and are symmetrically arranged, handles are fixed to ends of the hand climbing assemblies, pedals are fixed to ends of the foot climbing assemblies, and the two hand climbing assemblies and the two foot climbing assemblies surround a ginkgo trunk in a staggered mode; the perimeter of the hand climbing assembly and the foot climbing assembly surrounding the ginkgo trunks is adjusted through the adjusting assembly so as to be matched with the ginkgo trunks with different diameters; the two hand climbing assemblies and the two foot climbing assemblies are connected into a whole through buckle assemblies. The device is advantaged in that the climbing assemblies can be connected into a whole through the buckle assemblies, two hands are liberated, and the climbing assemblies can be conveniently trimmed and adjusted to be matched with ginkgo trunks with different diameters, and climbing is stable.

The invention discloses a maidenhair-tree winter anti-freezing method. The maidenhair-tree winter anti-freezing method is characterized by including the following steps that a maidenhair tree serves as a center, in the range of a circle of which the radius is 9-12 cm, a pit of which the depth is 12-14 cm is dug, and the bottom of the pit is leveled; prepared root anti-freezing nutrient gel is poured into the bottom of the pit to form a gel layer of which the depth is 0.2-0.3 cm, soil is used for covering the pit and leveled up; maidenhair-tree trunk is protected, firstly, a 8-mesh cotton web is adopted to wrap part of the portion, from the root part to a part which is 1.2-1.5 m away from the trunk, of the maidenhair tree, trunk anti-freezing nutrient gel is adopted to coat the portion, covered by the cotton web, of trunk, and the depth of a trunk nutrient gel layer is about 0.15-0.3 cm, then, limewater is used, and the portion, covered by the cotton web, of the trunk is painted to be white.

The invention discloses a maidenhair tree seedling growing method comprising the following steps: field selection and soil working, seeds selection and seed soaking accelerating germination, sowing, management, and transplanting; nursery field is selected and base fertilizers are applied, thus greatly satisfying maidenhair tree element demands, providing guarantees for maidenhair tree health growth, improving maidenhair tree quality, improving cultivated land fertility, improving soil environment, realizing fertilizer conservation water conservation effect, increasing soil organic matter, accelerating maidenhair tree growth, and improving economic benefits.

The invention relates to a maidenhair tree wart preventing method. The method comprises the steps of for maidenhair trees without damage on the barks, applying 1-2.5kg of urea and 135-255g of ammonium acetate to the root of each maidenhair tree in the first third of March each year in solar calendar, next, coating the trunk of the maidenhair tree with a mixed missile oil by the dosage of 0.5-1kg to the truck per square meter, and for maidenhair trees with damage on the barks, coating the damaged part of the bark with a mixed liquid prepared from 15 parts by weight of potassium nitrate, 12 parts by weight of glycerol, 8 parts by weight of baking soda and 18 parts by weight of water by the dosage of 0.2-0.5kg per square meter, wherein the mixed missile oil is prepared from 12-15 parts by weight of kerosene, 0.2-0.5 part by weight of mercuric chloride, 2-4 parts by weight of glycerol, 1-2 parts by weight of 40% omethoate missible oil, 10-15 parts by weight of water and 5-8 parts by weight of plant ash; the maidenhair tree wart preventing method has good prevention and treatment effects on the tree warts.

The invention discloses a formula for producing a special blending fertilizer for maidenhair tree by combining a calcium magnesium phosphate powder with a fertilizer source of urea. The invention is characterized in that: according to the fertilizer requirement regularity of maidenhair trees, the calcium magnesium phosphate powder is combined with fertilizer sources of granular superphosphate and urea to form a layer of calcium magnesium phosphate film on the granular surface; the special blending fertilizer not only prevents the deliquescing phenomenon caused by direct contact of superphosphate with urea, but also can reduce phosphorus fixation and utilization of slow release nitrogen when applied into soil; furthermore, the calcium magnesium phosphate fertilizer contains medium trace elements essential to crop growth, and is truly a multi-element compound fertilizer. 0.9-1.1 parts of high quality calcium magnesium phosphate powder, 4.4-4.6 parts of combination urea, 0.4-0.6 part of monoammonium phosphate, 2.4-2.6 parts of granular superphosphate and 1.4-1.6 parts of potassium chloride are subjected to dry mixing and blending and packaging by bags, and the product is launched in the market and used for production; and the blending fertilizer contains 38% of total nutrients of nitrogen, phosphorus and potassium, wherein the three are in the ratio of 21:8:9.

The invention discloses cured feed capable of replacing animal breast milk. The cured feed is prepared from following raw materials by weight in part: 300-320 of wheat flour, 90-100 of puffed corn, 10-15 of bran powder, 10-15 of black waxy corn powder, 20-25 of fish meal, 5-6 of lentinus edodes powder, 1-2 of apricot kernel powder, 2-3 of mica powder, 6-7 of wheat berry, 2-3 of maidenhair tree saw dust, 10-12 of granulesten oil, 1-2 of areca peel, 2-3 of plum blossom, 5-7 of bark of official magnolia, 3-4 of brewer's yeast, 5-6 of auxiliary agents and a proper amount of water. According to the cured feed, the wheat flour, the puffed corn, the bran powder, the black waxy corn powder, the fish meal, and the like are adopted as the main raw materials and raw materials with healthcare functions are added as auxiliary materials, and the cured feed is manufactured by a series of processes. The cured feed can effectively increase the pig growth speed. The added areca peel and the added bark of official magnolia can adjust intestines and stomach of pigs and reduce generation of intestine diseases and stomach diseases for the pigs. The raw materials are common. Matching is reasonable. The cured feed is capable of tonifying stomach, promoting digestion, effectively promoting pig growth and reducing the death rate of pigs.

The invention relates to a manufacturing technology for extracting ginkalides A and C from roots and barks of maidenhair trees, comprising the following steps of: drying roots and barks of maidenhair trees; refluxing and extracting 35 percent of ethanol; concentrating in vacuum; leaching ethyl acetate for three times; recovering a solvent; dissolving and filtering 60-80 percent of ethanol; then, purifying a chromatogram by using PRP512C inverted chromatographic resin; analyzing diluted alcohol; receiving corresponding effective components and fractions; concentrating in vacuum; respectively using 30 percent of ethanol and 60 percent of ethanol; and recrystallizing three times according to 1:8-15. The manufacturing technology for extracting ginkalides A and C from roots and barks of maidenhair trees has simple and convenient operation, good repeatability and high yield, is suitable for industrialized production and does not contain toxic solvents.