69 results about "Rhododendron mucronulatum" patented technology

The invention discloses a cutting propagation method for Rhododendron simsii. The method includes the following steps; using a mixture of peat, perlite and vermiculite as a substrate; acquiring top branches with buds from canopy of plants in autumn or early spring, and cutting the top branches into cutting shoots having the length of 7-9 cm; removing a part of leaves, performing single-face healing treatment on the base of the cutting shoots, and then using 100 mg.L-1 IBA aqueous solution to soak the cutting shoots for 16 hours; instantly performing cuttage after treatment of the cutting shoots, wherein the spacing between rows is 8X8 cm, and the cuttage depth is 2 / 3 of the length of the cutting shoots; and using an automatic intermittent spraying system to supply water and increase the humidity during a rooting period, wherein the temperature is controlled at 15.0-20.0 DEG C, the relative humidity is 85.0-95.0%, and the Rhododendron simsii is sprayed with a bactericide every 14 days. The method can effectively solve the problem that the conventional Subsect. Maddenia Rhododendron simsii cutting propagation method is difficult to root, is low in rooting rate, and is few in root systems; the rooting rate can reach over 90%, and the root systems are developed; and the method is simple to operate, is low in cost, and can be used for industrialization seedling of the Rhododendron simsii.

Disclosed is a method for tissue culture of rhododendron. The tissue culture method comprises the steps that: step 1: rhododendron explant material is collected, and placed on a supper-clean bench after being treated; the rhododendron explant material is disinfected by alcohol with a concentration of 75 percent for 6 to 8 seconds, washed by sterile water for three times, disinfected by 0.001 litre of mercury for 6 to 8 minutes, and washed by sterile water for three times in order; step 2: the material after being disinfected and cut is implanted into bud induce culture medium for thirty days; 30 days later, the obtained material is then implanted into proliferation culture medium for 60 days; step 3: healthy and strong rhododendron seedlings cut with 2 to 3cm by height are implanted into a rooting culture medium for 45 days; step 4: after the newborn root of rhododendron is about 0.5 cm long, the culture medium attached to the root is cleaned and newborn root is moved into sterile thick sand, the air humidity of which is kept ranging from 75 percent to 85 percent; one week later, the newborn root is moved into the mixed material of turfy soil and perlite; 45 days later, the treated root is moved into the field where the root is under the shade for one week. The method can realize industrial culture of seedling within 6 to 7 mouths and mass production of shipshape nursery stock of rhododendron.

The invention disclose a technique for the tissue culturing and breeding of the red-welcome cuckoo as well as the technique for domestication and replanting, which comprises the first generation culture of inducing the clump sprout by applying the germ-free seedling as explant, subculture for enrichment-culture, root-growing inducing for the clump sprout, water-planting for domestication before replanting the tissue culture sprout, the final replanting to flowerpot and getting the red-welcome cuckoo. The invention is suitable for the red-welcome cuckoo from different places, the k-factor of the clump sprout is high, the root is uniform, and the survival rate after the water-culture domestication is high and is suitable for the red-welcome cuckoo commercial production.

The invention provides a method for building an efficient regeneration system of Yunnan rhododendrons and belongs to the field of a plant biotechnology. The method uses upper-middle portion leaves of Yunnan rhododendron aseptic seedlings as a material, one or more of hormones TDZ, ZT, 2,4-D, NAA, IAA and casein hydrolysate with appropriate concentration are mainly provided based on a woody plant medium (WPM) culture medium, and complete plants are obtained through a direct leaf regenerating way and an indirect leaf regenerating way. The method builds the efficient regeneration system of the Yunnan rhododendrons for the first time, provides a good theoretical basis and an experimental basis for genetic engineering breeding work of the Yunnan rhododendrons and simultaneously promotes biotechnology breeding progress of the rhododendrons effectively.

The invention relates to a potted landscape composed through graft of a rhododendron grafted branch, a blueberry grafted branch and an oriental blueberry grafted branch on a rhododendron pulchrum stock and belongs to the novel technical field of plant cultivation. The rhododendron pulchrum stock which is strong in root system and growth is planted in a clay pot filled with pot soil foundation, the blueberry grafted branch is grafted on a branch facing the sun at the right side of the rhododendron pulchrum stock, the rhododendron grafted branch is grafted on a branch in the middle of the rhododendron pulchrum stock, and the oriental blueberry grafted branch is grafted on a branch opposite to the sun at the left side of the rhododendron pulchrum stock. A new coordinal-plant combined living body is formed by a rhododendron, a blueberry and an oriental blueberry in a grafted mode. In the process of graft, a first plant-growth-promoting mucilage glue sleeve, a second plant-growth-promoting mucilage glue sleeve and a third plant-growth-promoting mucilage glue sleeve are used for improving the grafting quality of the three cut ports of a first grafting cut of the blueberry grafted branch, a second grafting cut of the rhododendron grafted branch and a third grafting cut of the oriental blueberry grafted branch respectively. According to the novel plant combined living body, oriental blueberry leaves and blueberry berries are provided for manufacturing healthy food and meanwhile rhododendron flowers can be enjoyed by people, so that the economic value of the potted landscape is improved.

The invention relates to a seeding and seedling raising method of Rhododendron mucronulatum, belongs to the field of plant cultivation study, and solves the problems such that germination rate is low and seedling rate is low. The method includes the steps of seed collection and treatment, seeding and seedling transplanting; to be specific, putting sterilized seeds at the room temperature of 20 DEG C to 25 DEG C for germination acceleration, sowing the seeds to a seedling tray in which sowing medium 10 to 15 cm thick is loaded, under the density 2500-3000 / cm<2>, covering the seeds with plastic film, performing shading with a shade mesh at the temperature of 15 DEG C to 25 DEG C, under the humidity 80% and the light transmittance 40%, and keeping the surface of the sowing medium moist by means of wetting, performing thinning two times to three times after emergence of the seedlings, reserving the seedlings under the density of 800-1000 / cm<2>, performing transplanting when each seedling grow 2 to 3 true leaves, performing transplanting twice before outplanting, and performing shading with a shade mesh, under the seedling stage humidity 70-80% and the light transmittance 60%. The method has the advantages that germination rate is up to 80%, seedling rate is up to 95%, the seedlings grow robust, and production cycle is short.

The invention provides a method for getting a <SNOW BEAUTY AZALEA> from a variant plant Satsuki (R. <GAOYUE>) and the grafting propagation method, namely the seed selection and propagation method of azalea <SNOW BEAUTY AZALEA>, and the grafting and cuttage propagation adopts the variant branch of Satsuki hybrid. Concretely, the variant branch of the Satsuki which comes into pure white flower with full petalody of stamen and has plum blossom shape split petals is taken for grafting in the same year by means of terminal cleft grafting, the rootstock grafting adopts the robust rhododendron plant grown by cuttage by one year, and the plant waiting to be grafted can implement the cuttage propagation after growing up.

The invention provides a cultivation method for the flowering phases of azaleas. The cultivation method comprises the first step of soil treatment, wherein peat soil, humus soil, pine needle leaf mold and clay are stirred evenly to obtain cultivation soil; sulphur powder is splashed on the cultivation soil to be evenly stirred, and the cultivation soil stands for one day and used for cultivation of the azaleas; the second step of illumination management, wherein the rate of shading of a sunshade net is adjusted to be 70-75% from 9:30 am to 4:30 pm in summer and 60-65% from 10:30 am to 3:30 pm in autumn; the third step of clipping and shaping, wherein the tree bodies of the azaleas are clipped in May and are subjected to rejuvenation, sick branches are erased, and part of side branches and branches growing excessively are cut off; the fourth step of water and fertilizer management, wherein the azaleas are watered once every morning from March to May and is watered once in the morning and night everyday from June to September, the leaf surfaces of the azaleas are sprayed with water at noon, and the azaleas are watered once every two days from October to November; the fifth step of prolonging the flowering time; the sixth step of pest control. The method can effectively improve the flowering rate and abloom rate of the azaleas, prolongs the flowering phases of the azaleas and meets the higher and higher market requirements.

The invention relates to a high-survival-rate azalea seedling cultivating method. The method comprises the step one of cuttage planting soil treatment, the step two of cuttage branch pretreatment, the step three of cuttage branch treatment, the step four of cuttage and the step five of management after cuttage. Before planting, liquid traditional Chinese medicine is used for treatment, the disease resistance ability of azalea seedlings is improved, and branches can be promoted for germinating and surviving; as the length of the cuttage branches is reduced, the number of bacteria on the seed branches is reduced, the mutant probability of the seedlings is reduced, the strain genuineness of azalea can be kept, the applicability of the azalea is enhanced, and the survival rate of the seedlings is increased.

A cuttage cultivation method for azalea. A semi-lignified annual branch (10-15 cm) of azalea is selected and then is pre-treated and cut, and the branch is cultured under daily management until a seedling grows, wherein the pre-treatment particularly includes the steps of: removing redundant leaves from the branch with 2-3 leaves on the top remained, and soaking the branch in a disinfectant for 0.5-2.5 h, taking the branch out and draining the branch to remove liquid on the branch, and inserting the lower end, by 20-40% by length of the branch, of the branch into a nutrient solution to soak the branch for 16-20 h, and taking the branch out and draining the branch to remove liquid on the branch. The method saves time and labor intensity, is low in cost and is easy to achieve in batches, and greatly increases the rooting rate and survival rate of the cut branch of the azalea.

The invention discloses a rapid seedling propagation method of azalea hardwood cuttings and belongs to the technical field of plant propagation. The rapid seedling propagation method of the azalea hardwood cuttings includes the steps that lignified branches from previous year are collected in June or July; sub-branches on the top end of the lignified branches are transitional branches from semi-lignified to lignified branches in current year; 2 to 5 new branches on the sub-branches and born in the current year act as cutting branches; rooting agent is used for soaking the cutting branches after callus treatment; maintenance and nutrient management and then post-transplant management are conducted. The rapid seedling propagation method of the azalea hardwood cuttings has the advantages of capability of enabling the azalea cuttings seedlings to become independent new plants in the current year and transplanted to be nutritional seedlings for nursery the second year, simple and easy method, low cost and application of industrialized nursery of azalea.

The invention provides a seed sowing and seedling breeding method of azaleas. An azalea cutting propagation method mainly comprises: (1) preparing a seed sowing seedling bed: padding a turfy soil and garden soil mixture (at the ratio of (8:1) to (10:1)) with the thickness of 10cm to 15cm on a seed sowing container or a seedling bed; (2) sowing seeds: uniformly sowing the azalea seeds on the prepared seed sowing seedling bed; (4) covering dry moss: covering the dry moss with the thickness of about 0.5cm to 1cm on the seedling bed sowed with the azalea seeds; (5) watering: after covering the dry moss, watering thoroughly and putting the seedling bed into a greenhouse to be cultured at a room temperature. The method provided by the invention is simple to operate and feasible; seedlings can be intensively cultured and hormone treatment is not needed; the seedling emergence time is short and the seedling emergence rate is high; the azaleas can be conveniently transplanted at a later period so that the seed sowing and seedling breeding method is suitable for large-scale industrialized seedling breeding of the azaleas.

The invention provides a separation and purification method of a rhodojaponin-III monomer, and belongs to the technical field of separation and purification of active ingredients of traditional Chinese medicines. The separation and purification method comprises the following steps in sequence: based on ericaceous plant rhododendron molle as a raw material, carrying out alcohol extraction, ethyl acetate extraction and preparative high performance liquid chromatography separation; and concentrating and drying to obtain the rhodojaponin-III monomer. According to the preparation method, the optimal technology and parameter conditions are utilized, thus the content of the rhodojaponin-III in the product is up to more than 98%; and the method is simple and convenient for operation in the whole technological process, stable in technology, low in cost, suitable for mass production, high in separation efficiency and high in purity of product, and can realize high-purity separation and preparation of the rhodojaponin-III monomers as mass.

The invention discloses a rhododendron seed propagation method. The rhododendron seed propagation method includes following steps of (1) soil disinfection; (2) seedbed selection and preparation; (3) seed selection and processing; (4) seeding; (5) seedling management which includes fertilization, weeding, scarification and pest prevention and curing. The rhododendron seed propagation method performs bud forcing treatment on seeds 10d before the seeding, uses 0.5% potassium permanganate liquid to disinfect the seeds, covers the seeds with a film in bud forcing, and achieves short seedling emergence time, uniform seedling emergence and quick growth speed.

The invention discloses a sowing and seedling growing method of alpine azaleas. The method comprises the steps of 1, choosing sowing time; 2, choosing a sowing matrix; 3, sterilizing the sowing matrix; 4, sowing; 5, seedling stage management; 6, transplanting the sowed seedlings. The sowing and seedling growing method of the alpine azaleas is designed for the alpine azaleas, the sowing and seedling growing method is brief and feasible, and the germination rate and the seedling rate of alpine azalea seeds are increased.

The invention provides a method for promoting the formation of azalea flower buds. The method mainly comprises the following steps: residual flower stalks are cut timely in the late full-bloom stage; from the mid-April to the late May per year, after the flower-admiring peak and before withering, fading flowers are trimmed; in three weeks after the cutting of the flower stalks, the plant is trimmed to promote the differentiation and formation of the flower buds in summer and autumn; and common trimming types are straightening, thinningout and shortening pruning. By adopting the method, the flower buds of the potted azalea after flowering can be differentiated smoothly, the flower buds can be more and full, flowers of the next year are more and orderly, the flower color is gorgeous, and the flowers are full and have high appreciation value and economic value.

The invention mainly relates to the technical field of planting and discloses a soilless azalea culture substrate. The soilless azalea culture substrate is prepared from soybean straw, mushroom residues, wheat bran, vinegar residues, distillers' grains, coconut chaff, mixed bacteria, vermiculite, red soil, medical stone, phoenix tree leaves, bamboo leaves, neem leaves, quispualis indica, cat's claw vine and acmella oleracea. The raw materials are rich and balanced in nutrition, can provides nutrients required growth of azaleas, can be also antimicrobial and insecticidal and enhance the disease-resistant ability of the azaleas, the survival rate of the azaleas is up to 100%, the disease and pest rate is reduced to 5%, and the economic benefit can be improved by 10.6%. The raw materials are fermented with the mixed bacteria, meanwhile the medical stone is added, beneficial ingredients rich in micro-molecules promote azalea flowering and early and more flowering, a flowering stage is advanced by 10-12 months, and an ornamental value is improved. The soilless azalea culture substrate cooperates with multiple Chinese herbal medicines to inhibit diseases and pests, the occurrence rate of diseases and pests is reduced, the usage amount of pesticides and bactericides is decreased, and the planting cost is saved.

The invention discloses an azalea seedling culture method. The azalea is subgenus hymenanthes genus rhododendron subsection azalea. The seedling culture method comprises the following steps of using a mixture of peat soil and perlite as a substrate; filling the substrate into a tray, and tightly and compactly pressing the substrate; putting the tray into a water pool; directly seeding and spreading clean seeds onto the surface of the substrate, wherein the seeding density is 1 to 3 seeds / cm<2>; after sowing the seeds, covering 3 to 6mm of soil; after the seeding, putting the tray in a natural illumination environment with the temperature being 21+ / - 2 DEG C and the humidity being 90+ / -2 percent until the azalea sprouts; after the azalea sprouts, performing light shielding treatment, wherein the light shielding rate is 90 percent or above. The azalea seedling culture method realizes high sprouting rate and high seedling rate of the azalea; the genus rhododendron subsection sprouting rate is as high as 91 percent; the seedling rate is as high as 85 percent. The azalea seedling culture method has the advantages that simplicity is realized; the implementation is easy; the scale breeding of the azalea is realized; the seedling rate is high; the production and the popularization are facilitated.

The invention discloses a method for screening drought-enduring rhododendron germ plasma. The method for screening the drought-enduring rhododendron germ plasma is characterized in that seeds are taken as an object, polyethylene glycol 6000 (PEG-6000) is utilized for simulating drought stress, a culture dish filter paper method is adopted for carrying out cultivation, and relative germination rate is selected as a drought-enduring index for carrying out screening; and the method for screening the drought-enduring rhododendron germ plasma comprises the following concrete steps: (1) selecting seeds and disinfecting; (2) simulating seed germination and cultivation under the drought stress condition by utilizing 15% PEG-6000; (2) carrying out seed germination and cultivation with distilled water (for contrast); and (4) determining the drought-enduring index relative germination rate, and screening drought-enduring germ plasma. The method for screening the drought-enduring rhododendron germ plasma can be used for screening a drought-enduring rhododendron germ plasma resource and is simple, easy, rapid and rapid, and a foundation is laid for breeding of drought-enduring rhododendron and evaluation of rhododendron germ plasma resource.

The invention relates to a cultivation medium special for rhododendron container seedlings. The cultivation medium is prepared from peat, a green plant waste fermented product, pine scales and yellow sand, in the cultivation medium, volume ratios of the peat, the green plant waste fermented product, the pine scales and the yellow sand are 20-30%, 30-40%, 30-40% and 0-10% respectively. The invention further provides a method of cultivating the rhododendron container seedlings. The step of preparing the cultivation medium includes the substeps that rhododendron is put into a pot according to a conventional method, mycorrhiza fungus liquid microbial inoculum is sprayed around a root system, the plant height of rhododendron is 15-20 cm, the flower pot is inoculated with 10 ml of the microbial inoculums, and earth covering curing is carried out after inoculation; after inoculation of the rhododendron seedlings is completed, slow-release particle fertilizer is applied into the flower pot, and curing is carried out. Cyclic utilization of the green waste can be promoted, the usage amount of the natural peat is reduced, the use ratio of fertilizer is increased, and plants of the cultivated rhododendron container seedlings are higher in fullness.

The invention provides a method for acquiring a 'Xilinmen Rhododendron' through the sport deviation of a Rhododendron pulchrum Sweet and a grafting-propagating method for the 'Xilinmen Rhododendron', namely a method for breeding and propagating the Rhododendron pulchrum Sweet of Rhododendron, which carries out grafting and cutting propagation through a sport deviation branch of the Rhododendron pulchrum Sweet; particularly, fetching a flowering sport deviation of the Rhododendron pulchrum Sweet, selecting an annual seedlings of the Rhododendron pulchrum Sweet with strong cutting propagation as the parental stocks; using a cleft graft to graft and carrying out cutting propagation after the grafted plants grow up; spraying a monopotassium phosphate of 0.2 percent after the cutting seedlings root for 10 days; firstly transplanting the seedlings into a plastic bag after growing for 2 months in a seedbed and then transplanting the seedlings in a bag into a basin in the next year; removing redundant buds when transplanting.

The invention relates to a nursery stock modeling and culture method, and discloses an azalea vase modeling and culture method. The method specifically includes the following steps of firstly, selecting 1-2-year-old red-flower azalea and other color-series clone seedlings which are robust and complete in root system, consistent in stem thickness, long and strong after stumping according to landscape requirements, and planting the seedlings to form a circle with the diameter of 45-100 cm on sandy loam which is sufficient in base fertilizer, loose, breathable and good in drainage, wherein the plant spacing is 6-11 cm; secondly, establishing a multi-layer annular supporting mold according to the shape and arc trajectory of a vase, and fixing stems of azalea to the mold through hemp ropes to form a preset vase shape; thirdly, planting healthy albizia julibrissin plants which are wide in crown shape and have the branching point of 2 cm or above and the ground diameter larger than 8 cm on the south side of the vase for shielding the sun for the azalea vase, or establishing a sunshade shed in summer and covering the sunshade shed with a sunshade net with the sunshade rate of 30-40%; fourthly, enhancing the plant water and fertilizer management of the azalea vase and removing tillers on azalea flax stocks in time.

The invention relates to rhododendron mucronulatum leaf tea for relieving exterior syndrome and clearing away lung-heat and a preparation method of the rhododendron mucronulatum leaf tea. The rhododendron mucronulatum leaf tea is prepared from tea leaves and a Chinese herb extract in a mass ratio of the tea leaves to the Chinese herb extract being 1 to 4, wherein the Chinese herb extract comprises the following raw materials in percentage by weight: 20-40% of rhododendron mucronulatum leaves, 10-20% of root tubers or herb of tetrastigma hemsleyanum, 10-15% of medicinal changium roots, 10-15% of succus bambusae, 5-10% of fructus momordicae, 5-10% of licorice roots, 5-10% of pinellia tuber leaven, 3-5% of tendrilleaf fritillary bulbs, 3-5% of semen sterculiae lychnophorae, and 3-5% of herba ephedrae. The preparation method of the rhododendron mucronulatum leaf tea comprises the main steps of a, preparing raw materials; b, performing extraction to obtain a filtrate; c, performing centrifugal separation and concentration; d, performing applying and performing drying by baking; and e, performing baking, frying and sterilization. After being drunk for a long term, the rhododendron mucronulatum leaf tea for relieving exterior syndrome and clearing away lung-heat, disclosed by the invention, has the efficacy of relieving exterior syndrome, clearing away lung-heat, dispelling wind and heat, clearing heat and removing toxicity.

The invention discloses traditional Chinese herbal medicine mixed liquid for promoting rooting as well as a preparation method thereof, and relates to the technical field of biological pharmacy. The traditional Chinese herbal medicine mixed liquid for promoting rooting mainly comprises the following raw materials in parts by weight: 6 to 15 parts of crofton weed, 50 to 80 parts of cryptomeria fortune, 50 to 100 parts of pinus yunnanensis, 30 to 40 parts of azalea, 9 to 15 parts of pinus armandi, 4.5 to 9 parts of litchi, 10 to 30 parts of Chinese birch, 30 to 50 parts of common andrographis herb, 15 to 30 parts of Chinese violet, 5 to 10 parts of salvia chinensis, 10 to 30 parts of sculellaria barbata, 3 to 6 parts of akebiaquinata, 3 to 10 parts of myrrh and 15 to 60 parts of seaweed. Thetraditional Chinese herbal medicine mixed liquid for promoting rooting is prepared from pure natural traditional Chinese herbal medicine components through reasonable proportioning and a scientific method; the preparation method is simple and low in cost; and an artificially synthesized chemical regulator is not added, so that the traditional Chinese herbal medicine mixed liquid can obviously promote rooting of plants and increase the survival rate of the plants, does not have any side effect and is environmentally friendly and pollution-free.

The invention relates to a preparation method of a rhododendron culture medium. The preparation method comprises the steps of mixing 20-25 parts by weight of vermiculite, 30-35 parts by weight of pearl sand, 10-15 parts by weight of river sand and 10-12 parts by weight of coal slag, adding 0.1 part by weight of thulium oxide and 1 part by weight of carbendazim, uniformly mixing, covering the mixture for 1-2 days by virtue of a plastic film, flushing the mixture for 3-5 times by virtue of clean water, uniformly mixing the aired mixture by virtue of 0.4% compound fertilizer liquid, and covering the mixture for 30-45 days by virtue of the plastic film, so as to obtain the rhododendron culture medium. The preparation method has the advantages of available raw materials, low cost, environmental friendless, convenient use and good effect.

The invention relates to a chemical disinfection tissue culture method for rhododendron simsii planch. The chemical disinfection tissue culture method for rhododendron simsii planch comprises the steps of culture vessel disinfection, culture medium preparation, induction culture, enrichment culture, rooting culture and bottle seedling transplanting. According to the chemical disinfection tissue culture method for rhododendron simsii planch, the purpose of disinfection or bacteriostasis can be achieved by a chemical reagent; in the culture medium preparation process, a culture vessel and a culture medium do not need to be disinfected at high temperature and high pressure, the workload and the energy consumption can be reduced, and the rhododendron simsii planch tissue culture link can be simplified; the operation is simple, and the preparation is implemented according to different culture medium formulae; the practicability is high, the popularization is good, the tissue culture cost of rhododendron simsii planch can be effectively lowered, and the cost can be generally reduced by no less than 10%.

The invention discloses a large-scale seedling culturing technology for rhododendron calophytum Franch. The technology includes the following steps that seeds, collected in the last year, of the rhododendron calophytum Franch are placed in a refrigerator and stored to March in the second year at the temperature of 4 DEG C; the seeds are treated for 24 hours through 600 mg / l GA3 and then flushed for 10 minutes through running water; the mature and full seeds are selected and placed in a culture dish where absorbent gauze and filter paper are arranged in a cushioning mode, then the culture dish is placed in a culture box for culturing, wherein the culture box is at the low temperature of 20 DEG C, illumination is performed according to 16 h / 8 h (light / dark), water is sprayed one time per day, and the rate of emergence of the seedlings can reach over 95% after two weeks; all the emerged seedlings are transplanted into a plastic green house and placed in matrixes for planting, wherein peat and perlite are mixed in the substrates, and then water is sprayed every day. A lot of rhododendron calophytum Franch plants are obtained; the resources of wild rhododendron calophytum Franch in Qinling mountains are conserved and protected; the large-scale seedling culturing technology lays the foundation for seedling culturing of the rhododendron calophytum Franch; material stock is provided for hybridization seed culturing of existing monotonous rhododendron varieties in China.

The invention discloses a method for breeding an azalea clonal cultivar. The method is characterized in that: azalea eminent trees with high ornamental value and an early flowering period are obtained in a manual physical mutation mode. The method comprises the following steps of: determining a breeding objective; collecting plump and mature seeds; performing physical mutation by using 50 to 250Gy of 60Co gamma rays in the dosage rate of 10Gy / min; sowing the seeds; cultivating nursery-grown plants for 3 to 6 years; selecting single plants, namely selecting in the aspect of the observation of biology, botanical characters, ornamental features and the like; analyzing genes with mutated characters; performing regional test on the eminent trees; summarizing cultivating measures; and popularizing. The eminent trees obtained by the method have a flowering period which can be advanced by 5 to 15 days commonly, can be white, red and white, red and the like, have polyphyll and are high in stress resistance.

The invention provides a method for extracting bioactive components from Rhododendron mucronatum. The method includes: grinding Rhododendron mucronatum picked at a flowering stage, adding into an extraction kettle, and taking CO2 fluid as an extracting agent to extract light yellow active component extract under the extraction pressure of 15-25 MPa and the extraction temperature of 35-45 DEG C for 1.5-2.5 h. In a provided technical parameter range, the method is high in extraction efficiency and extraction speed, simple in process, reagent saving, low in energy consumption, low in cost and low in pollution during extraction of the bioactive components from the Rhododendron mucronatum picked at the flowering stage, thereby being superior to other extraction methods adopting traditional extraction techniques.

The invention relates to a method for cultivating an early blossoming and multiplicate rhododendron. The method comprises the following steps of: selecting rhododendron plants which do not have plant diseases and insect pests, are robust in growth vigor and are in the early flowering period, and are used as a cross breeding parent, namely Hanyin No.2 (female)* holacanthus septentrionalis (male); selecting flowers which are about to bloom in the first 20 days of April, removing petals at about 10 in the morning, leaving pistil only, pollinating and bagging; removing bags after 7 to 10 days, harvesting fruits when the fruits are yellowed in the middle ten-days of November, and sowing by taking pure peat soil as a sowing matrix in a greenhouse in the middle ten-days of December, watering fully before sowing, and covering a film and keeping moisture until seedlings emerge; after the seedlings grow to form 5 to 6 leaves, transplanting to a 72-mesh tray, recovering the seedlings, pinching once, applying 0.2 percent of Huaduoduo balance fertilizer once every 10 to 15 days; and planting in a nutritional bag after 3 to 4 months, and managing conventionally.