113results about How to "Seedlings grow fast" patented technology

A method for manually-cultivating three-stage Rhizoma Paridis belonging to the technical field of agriculture includes primary seedling planting and raising, secondary seedling planting and raising, Rhizoma Paridis cultivation and field management, wherein, the primary seedling planting and raising includes the steps of presprouting of seeds and seed seedling raising, when tubers weigh 2g after 3 years, transplantation can be carried out. The secondary seedling planting and raising includes the steps that: the primary seedlings with 2g of tubers are transplanted in October and last third of November and transplantation can be carried out when the tubers are 15g after 3 years. The steps of Rhizoma Paridis cultivation and field management are that: the secondary seedlings are transplanted according to the proportion of 21,000 seedlings in per acre in October and last third of November, and mature Rhizoma Paridis can be dug after 3 years; farmyard manure is fertilized once or twice every May and last third of August with the amount of 3000kg per acre every time, or carbamide is fertilized or foliar fertilizer is sprayed for three times in the vigorous growth period; in the non-seed-collecting filed, ovaries are picked off after sepals unfold; commercial pesticide is used for preventing plant diseases and insect pests in the growth period of the Rhizoma Paridis. The method for manually-cultivating Rhizoma Paridis is characterized by less investment, early effect, good harvest, high efficient, etc., which can realize major production.

The present invention relates to one fast improved walnut plant propagating process with low cost, fast seedling growth, high survival rate, high quantity, simple operation and high efficiency. The process includes the following steps: seeding walnut seed after germination stimulation and soaking in gibberellin liquid to seedling bed to cultivate tree stock; collecting scion from branch of mother plant and sealing with wax; grafting the scion with wedged lower end after being soaked with naphthylacetic acid solution to the tree stock; cutting the roots of the grafted seedling and treating roots with naphthylacetic acid solution; and planting the grafted seedling to the seedling bed while exposing the cut over ground and watering for rooting.

The invention discloses a seedling formation method in alkaline lands by pre-coating film on cotton, which aims at increasing the seedling formation rate of the cotton in alkaline lands and realizing seedlings full and strong. The method of the invention is characterized in that: cotton fields having the salt content of below 0.4% and has certain accumulative rain and snow in winter are thawed in early spring, then ditches are opened in the rows of the pre-sowed cotton, and 2 tons of miscellaneous manure and 40 to 60kg of compound fertilizer which contains about 15 percent of N, about 15 percent of P2O5 and about 15 percent of K2O are fertilized, and then mulching film is used for covering the ditches immediately after the ditches are covered with soil and raked; as for an alkaline land with salt content of more than 0.4 percent, 80m<3> of fresh water is irrigated for each mu (mu: a Chinese unit of area, 1 / 15 of a hectare) at the end of winter to restrain salt content, ditches are opened and then miscellaneous manure and N-P-K compound fertilizer are fertilized in the early of middle of March, and film is covered after the land is prepared. The cotton fields which are leveled, fertilized and pre-coated with film are steadily passes earth temperature of 15 DEG C at the position of 5cm below the film, then bunch planting the ditinted and coated cotton seeds according to preset row spacing and plant spacing. The cottons are thinned out after the young seedling grow tidily, and final singling is carried out after two true leaves come out. The method of the invention achieves the functions of increasing temperature, water preserving and controlling salt by pre-coating the mulching film, promotes the seedling emergency and formation of cottons in alkaline land sand realizes synergetic salt control effect by concentrated fertilization under the film, thereby having significant yield increasing effect.

The invention relates to a tissue culture, rapid seedling formation and ecological application method for Louisiana iris, which comprises the following steps: 1) material selection: flowers, flower buds, floral axis, blades, roots and other vegetative organs of Louisiana iris are selected as explants; inoculation is carried out after routine disinfection; 2) bud induction and proliferation culture: the sterilized vegetative organs in 1) are inoculated on an induction medium; when callus has an area of 1 to 2 cm2, and forms a 0.5 to 0.8cm green convex block, the vegetative organs are transplanted in a differentiation medium; when the length of the vegetative organs reaches 5 to 8cm, the vegetative organs are transplanted in a rooting medium; 3) root induction: rootless seedlings with consistent growth are transplanted to a root induction medium; when the length of the rootless seedlings reaches 12 to 15cm, seedling adaptation is performed; 4) seedling adaptation: seedling adaptation is carried out for 6 to 8 days under natural light, then seedling emergence can be realized; culture medium at the root section of the seedlings is washed off; the seedlings are transplanted to a sterilized seedling container equipped with mixed substrate; after watering, shading and heat insulation, seedling emergence can be realized. The method has the advantages of fast seedling formation and good quality, and the seedlings can be directly applied to ecology.

The present invention discloses a method used for raising the seedling of oil teas in a grafting container, aiming at overcoming the defects of traditional grafting methods. By adopting the method of Grafting and raising seedlings, not only the survival rate of the forestation, the land use rate and the economic benefits are enhanced, but also the lands, labors and resources are saved, especially the blooming and fruiting are reached ahead of time. The method comprises seed collecting, storing and shooting, and scion selecting, grafting, as well as seedlings raising in containers, buds managing and forestation. Seedlings raising in containers is to put soils in the container, and then move the grafted scions into the container; wherein, the container is a small container with a diameter of 6 to 8 cm and a depth of 8 to 10 cm, which can be replaced by a seedlings raising dish, each dish consists of 30 to 36 small container models with diameters of 6-8 cm and depths of 8 to 10 cm. In order to be adaptive to raise seedlings in factories and convenient for moving and operating, each dish can not consist of more than 36 seedlings raising dishes (namely not exceeding 36 small containers).

The invention relates to a seedling culturing substrate block and a preparation method thereof. The seedling culturing substrate block provided by the invention comprises Eupatorium adenophorum as a major ingredient. The major ingredient of the seedling culturing substrate block provided by the invention comprises one or more of Flaveria bidentis, Mikania micrantha, Eupatorium odoratum, guayule, Cenchrus Paciflorus and Solanum rostratum, and the content of the major ingredient is 20-50 wt%; the major ingredient comprises peat or vermiculite, and has the content of 50-80 wt%; and the auxiliarymaterial comprises a nutrient ingredient and a regulator, and has the content of 1-2 wt%. By using the seedling culturing substrate block provided by the invention, nutrients needed by plant growth and contained in a conventional seedling culturing substrate can be provided; meanwhile, roots of seedlings can be promoted to grow and the survival rate of plant breeding is increased because the Eupatorium adenophorum is added to the raw materials.

The invention discloses a seedling method and particularly relates to a rapid seedling method for fruit tree hybrid seeds. The rapid seedling method includes after the fruits are collected, removing pulps and taking out seeds without shells, placing the seeds in culture dishes, pouring sterile water with 20-25 degrees in the culture dishes, and soaking the seeds in the sterile water within 24-36hs; removing seed coats, sterilizing the seeds without coats with 0.08%-0.12% potassium permanganate solution for 24-36secs, and placing the seeds waking up from dormancy in the container filled with the sterile water for seeding; seeding the seeds waking up from the dormancy in watered matrixes for culture in a phytotron; after the seeds grow the fifth or the sixth leaves, removing the seeds out of the phytotron and culturing the same under the indoor temperature for 2-3 days for water controlling, and then transplanting the seeds to feeding blocks or fields to grow. By the application of the rapid seedling method, seed development period is shortened, and emergence rate of hybrid seeds is increased.

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 relates to a greenwood grafting method for jujube tree. The method for grafting jujube branches specifically comprises the steps of: from mid-to-late May to mid-to-late July, selecting a current-year semi-lignified developing branch, shearing the branch off, removing all the leaves immediately, and immersing the basic part into water; selecting a grafting part at a smooth part of the branch with stem diameter of above 0.5cm, which is positioned 6 to 7 centimeters above the basic part of the stock, and keeping 3 to 5 leaves or 1 to 2 small branches below the grafting connector; cutting the stock off, smoothing the section, and splitting a cut which is 3 to 5 centimeters deep in the middle of the section with a sharp knife; cutting the scion of a first main bud into a wedge with one side being thicker and two sides being the same long, inserting the scion into the cut so that the main bud is exposed, and tightly wrapping the stock, the scion and the top end of the stock from bottom to top by using a plastic strip with a width of 2-3cm; and removing branches and shoots below the grafting connector in time when the new shoot grows to be approximately 20 centimeters after the grafted branch survives. The grafting method of jujube branches is simple and convenient to operate, enables the branches to be easy and fast to survive, greatly improves the survival rate of jujubes and saves scions.

The invention relates to the technical field of artificial vegetative propagation seedling cultivation of plants, in particular to a michelia champaca root-grafting seedling cultivation method. The michelia champaca root-grafting seedling cultivation method includes the steps of selecting the root-grafting time, pre-treating scion mother trees, selecting and treating stock roots, selecting and treating scions, performing root grafting, cultivating seedlings, performing field planting and the like. The michelia champaca root-grafting seedling cultivation method effectively solves the problems that cuts of michelia champaca are oxidized and browned and necrotize, and cuttage or grafting rootage is hard to achieve, and the survival rate is low, and meanwhile time, land and manpower special for cultivating stocks are saved.

The present invention discloses an anoectochilus roxburghii tissue culture seedling method, mainly comprises: A. culture medium preparing, wherein the step A comprises two steps of preparation and sterilization; B. inoculating, wherein a pre-treated explantation is defoliated under a sterile condition, a base stem segment with one knob is cut from each explantation and inoculated on the prepared culture medium; and C. culturing, comprising culturing in dark and culturing in light. According to the present invention, mashed sweet potato is coordinated with Hyponex 1, Hyponex 4 and Hyponex 5, the culture medium is prepared by a reasonable proportion to promote inducement and growth of anoectochilus roxburghii seedlings; the seedlings in a culture flask is free from transfer, thus operation steps are reduced, labour cost is lowered, a contamination rate is reduced, and a seedling rate is high, wherein a bud occurs within 15 days, rooting occurs after one month, and a common tissue culture seedling is produced after four months; the seedling rate is over 94%, and the survival rate of transplantation after two months is over 97%; and therefore a production period of the anoectochilus roxburghii seedling is shortened, and a rapid seedling culturing is prompted.

The invention discloses a fertilizer for promoting plant growth, which is prepared from raw materials of the following components in part by weight: 10 to 20 parts of soybean, 10 to 20 parts of alfalfa, 15 to 25 parts of oat, 10 to 20 parts of potato, 10 to 30 parts of corn, 5 to 15 parts of cottonseed, 2 to 3 parts of carrot, 3 to 4 parts of tea leaf and 5 to 10 parts of honey. The invention also discloses a preparation method of the fertilizer, which comprises the steps of: taking a proper amount of raw materials; uniformly mixing; adding water and boiling in water; filtering; sealing; and fermenting for 5 to 7 days. The fertilizer disclosed by the invention has the advantages of various nutrients, no toxic or side effect, no residue, no drug resistance and no environmental pollution, and is a natural health promoting product. The preparation method of the fertilizer of the invention has the advantages of simplicity, low cost and manual or industrial production.

The invention discloses a paulownia root-imbedding seedling growing technology. The technology comprises the following steps: 1, land selection and soil working; 2, seminal root selection; 3, seminal root acquisition; 4, proper root imbedding; 5, seedling management; 6, fertilizer and water management; and 7, insect disease control. According to the paulownia root-imbedding seedling growing technology, through reasonable management of each growth stage of a nursery land and a nursery-grown plant, the nursery-grown plant grower faster, there are fewer insect diseases, the quality of the nursery-grown plant is better, the output of the nursery-grown plant is higher, and the market demands can be better satisfied.

The invention discloses a grafting method for increasing the watermelon grafting survival rate.The grafting method comprises the steps that scion seeds are sown at one corner of a hole disk to obtain scion seedlings; when two cotyledons of each scion seedling unfold, stock seeds are sown in the middle of the same hole disk of the scions to obtain stock seedlings; when true leaves just come out from the stock seedlings, grafting is prepared; stock growing points and a cotyledon are chopped, and stems are downwards hacked; a stem of the lower portion of each scion is obliquely cut from the root end to the leaf end; each cut scion is inserted into a stock notch, the cotyledon of each stock makes contact with the cotyledon of the corresponding scion in a cross mode, and fixation is conducted through grafting clips.A broken-root-free hitch grafting mode is adopted, requirements for the scions are inexact, final-period management is easy, the survival rate is 98% or above, grafted seedlings can become adult seedlings quickly, and the grafting method is very suitable for grafting watermelons and other crops.

The invention discloses a paphiopedilum new variety 'yo-yo paphiopedilum' group rapid reproduction method, and relates to a biological engineering plant tissue culture reproduction method. The method includes the following steps of: 1, artificial cross pollination; 2, sterile sowing and protocorm formation stage; 3, proliferation and differentiation culture stage; 4, seedling strengthening and rooting stage; 5, seedling hardening and transplanting. The 'yo-yo paphiopedilum' combines the excellent traits of parents, has the advantages of being compact in plant type, unique and elegant in flower shape, attractive in flower color, easy to cultivate, up to 50 days in average flowering stage and the like, and avoids the disadvantages of being single in flower amount and too long in scape which is prone to be in lodging and broken. According to the method, the seed germination rate and the flowering rate are high, and the cultivation period is 3-4 years. The method is a high efficiency test tube reproduction method for obtaining a large number of 'yo-yo paphiopedilum' seedlings, and has the advantages of being high in germination rate, fast in seedling formation, good in seedling quality, strong in growth potential and the like, can obtain consistent test tube seedlings, and provides a large number of the seedlings in a short time so as to better protect wild resources.

The invention discloses a polyculture feed for eel fries and loach fries. The polyculture feed comprises the following components in parts by weight: 7-9 parts of fish meal, 3-4 parts of soybean meal, 2-5 parts of corn meal, 1-2 parts of manure and 0-1 part of earthworm. The feed disclosed by the invention is designed against fry varieties, combined with a modern feed processing technology and matched with the decomposed manure and earthworms, and then the fries of eels and loaches can be simultaneously fed; and according to statistics, the feed disclosed by the invention is utilized for feeding under polyculture, the growth speed of the eels is increased by 15% in comparison with that by adopting the traditional feed, the body weight gain is 5.5%, and the growth speed of the loaches is increased by 12% in comparison with that by adopting the traditional feed.

The invention provides a cutting propagation method for poplar with colorful leaves. The cutting propagation method comprises the following steps: (1) cutting land treatment, namely selecting a sandy loam which is loose in texture, good in drainage and breathable as a cutting land, fertilizing, ploughing and then making a seedbed on the cutting land; (2) cutting slips treatment, namely selecting branches of annual poplar with colorful leaves, cutting the branches into slips with smooth notches; binding the cutting slips, carrying out wet sand storage, taking out the cutting slips before cutting, and soaking in clean water for 4 days; (3) cutting, namely spraying the bed surface before cutting by virtue of a herbicide, cutting in spring, wherein the upper buds of the cutting slips are 1cm higher than the ground during cutting, and spraying the herbicide within three days after cutting; (4) watering and fertilizing, namely thoroughly watering once within half a month after cutting, watering for five times yearly, draining away water in a rainy season, additionally fertilizing a nitrogen fertilizer for three times at the nursery stock fast-growing period, and fertilizing a phosphorus potassium fertilizer at the late growth stage of the nursery stock; (5) removing coppice shoots and reinforcing earth; (6) controlling pests. The cutting propagation method is high in propagation speed, and relatively low in seedling cultivation cost, and can meet the requirements of urban landscape and landscaping.

The invention discloses an embedding, germination accelerating and germinating method of high-mountain miniature potatoes in Huaiyu shan, and belongs to the field of agricultural science. The method comprises the following steps: firstly, soaking the miniature potatoes in MS culture solutions containing different components, mixing the potatoes with an improved MS culture solution, then embeddingthe potatoes, and carrying out culturing under special conditions to enable the miniature potatoes to germinate. According to the method, through soaking and embedding culture, germination of the Huaiyu shan high-mountain miniature potatoes can be effectively promoted, the germination rate of the Huaiyu shan high-mountain miniature potatoes is greatly increased, and meanwhile germination and seedling formation of embedded beads of the Huaiyu shan high-mountain miniature potatoes are promoted through irrigation of the MS culture solution and alternate culture with day and night temperature difference; and therefore, the germination rate of the embedded beads of the Huaiyu shan high-mountain miniature potatoes is effectively increased, plants are promoted to be robust, sufficient nutrients can be provided, and follow-up culture and transplanting survival are facilitated.

The invention discloses a method for breeding and cultivating seedlings of cypripedium corrugatum with red glows. The method includes the steps of artificial pollinating, collection and storage of hybridized capsules, sterilization of the hybridized capsules, sterile sowing and protocorm inducing, strong seedling culture and rooting culture, acclimatization and transplant, transplant for greenhouse cultivation, and disease and pest control. In artificial pollinating, paphiopedilum hirsutissimum is taken as a female parent, and paphiopedilum concolor is taken as a male parent. A culture mediumfor seed germination is prepared from 1 / 5-1 / 6 of MS, 1.0-2.0mg / L of 6-benayl aminopurine, 0.05-0.50mg / L of naphthylacetic acid, 10.0-15.0% of coconut juice, 10.0-15.0% of banana juice, 1.0-1.5g / L of activated carbon, 20-30g / L of cane sugar and 9.5-10.0g / L of carrageenan powder. The method has the advantages that seed germination rate and seedling formation speed are high, the seedlings grow vigorously, and the problem that hybridizing seeds with the paphiopedilum hirsutissimum as the female parent and the paphiopedilum concolor as the male parent to germinate is hard in a natural state is solved.

The invention discloses light and environment-friendly rice seedling raising substrate fertilizer and a production technology of the fertilizer. The fertilizer is prepared from pig manure, rice straw, distillers' grains, mushroom residues, vermiculite, a functional bactericide and silicon fertilizer, and these raw materials are mixed and fermented, the fermented product is sieved, and the fertilizer is obtained. With the adoption of the light and environment-friendly rice seedling raising substrate fertilizer and the production technology of the fertilizer, the cost is low, and the raw materials are easy to obtain; nitrogen fertilizer used before transplanting is provided, and seedlings grow quickly after mechanical seeding raising of rice; soil is avoided and the farmland soil plow layer is not damaged; waste is recycled and agricultural non-point source pollution load is reduced; mechanical rice seedling raising and transplanting are facilitated, the emergence rate is high, and seedlings grow quickly; the fertilizer is light in mass and convenient to transport and carry.

The invention discloses a Chinese magnoliavine layering propagation method, and belongs to the technical field of plant cultivation. The method comprises following processing steps: 1) digging trenches on the land around descendants of a Chinese magnoliavine seed tree; layering the descendants serving as layered branched in the trenches; filling and leveling up the trenches; enabling front segments of new shoots to be exposed on the land; pinching the descendants; and separating the descendants from the seed tree at the base after the plant goes into a dormancy stage; and 2) digging out the rooted layered branches; cutting the rooted layered branches into single bud branches provided with roots; cultivating each single bud branch with the eye being upward; covering buds with soil; applying a soil bactericide for one time; shading the buds; and removing the shading after seedlings survive. By employing the method, the operation is easy, the seedling growing speed is fast, the survival rate of the seedlings is high, and the management is facilitated. The method is a Chinese magnoliavine vegetative propagation cultivating method having relatively high promotional values.

The invention discloses a solid culture medium for callus seedlings of stem tips of potatoes, which belongs to the technical field of agricultural biotechnology, comprising the following components: potassium nitrate, ammonium nitrate, monobasic potassium phosphate, magnesium sulphate, calcium chloride, potassium iodide, boric acid, manganese sulfate, zinc sulfate, sodiummolybdate dehydrate, copper sulfate, cobaltous chloride, ferric sulfate, ethylenediaminetetraacetic acid, nicotinic acid, pyridoxine hydrochloride, glycine, glutamine, casein hydrolysate, yeast extract, sucrose, 6-benzylaminopurine, zeatin, indole-3-acetic acid, 3-indolebutyric acid, gibberellin and polygel solidified medium. The culture medium is used for cultivating the stem tips of the potatoes, has good testing effect, basically has no callus tissues, and has high seedling rate. The invention greatly reduces the heteromorphosis of the regeneration plants of the stem tips, and ensures the integral primordial behaviors and the genetic background of the potato varieties. Compared with the primary method, because the culture method adopts the one-step seedling method, the method reduces the culture time and reduces the pollution probability.

The invention discloses an establishment technology of a hemsleya amabilis tissue culture system. Hemsleya amabilis is a cucurbitaceous plant and tuberous roots are dried. The hemsleya amabilis is produced in Yunnan, Sichuan, Guizhou, Guangxi and the like. The hemsleya amabilis is dug when leaves become yellow in late autumn; over-ground parts and silt are removed; then the hemsleya amabilis is washed, sliced or not, and dried in the sun. The tuberous roots are of an irregular round shape or oval shape and are of a slight tortoise shape in the vertical direction; the diameter of the large tuberous roots can reach 20cm. Peels are brown yellow or grey brown and are slightly rough and certain peels have concave caudex traces; sections of the peels are light white or grey brown. The hemsleya amabilis is firm and is almost powdery. The hemsleya amabilis has slight odor and a slightly bitter taste. The reproduction speed and the scale are improved by utilizing a plane tissue culture technology, so that industrialized production of hemsleya amabilis germchits is realized. Hemsleya amabilis tissue culture regenerated plants are successfully obtained by taking stems with buds as explants through steps of inducing, reproducing, rooting, carrying out seedling exercising and transplanting and the like, and a systemic hemsleya amabilis tissue culture plant regeneration system is established. The reproduction coefficient is high, the seedling rate is high and the benefits are great.

The invention provides a tissue culture method for one-step seedling formation by using with-leaf petioles of Jingzhou pinellia ternate tissue-culture cluster seedlings. The method includes the following steps that 1, explants are selected, wherein Jingzhou pinellia ternate seeds are obtained, after disinfection treatment, germination is accelerated to form cluster buds, and the with-leaf petioles are selected as the explants for tissue culture; 2, the explants are inoculated into a seedling formation medium for culture until the seedlings grow to be 4-10 cm, wherein the seedling formation medium includes 0.5-1.2 mg / L of 1 / 2MS + IBA, 0.2-0.8 mg / L of NAA, 0.15-0.25 mg / L of TDZ, 3% of sucrose and 0.7% of agar. The with-leaf petioles of the Jingzhou pinellia ternate tissue-culture cluster seedlings serve as the explants, the special culture medium is adopted, the seedlings can be rapidly formed in only 45 days, the multiplication coefficient and seedling quality of the Jingzhou pinellia ternate seedlings are ensured (the rooting rate is 95% or more and the transplanting survival rate is 100%), and scale production is achieved.

The invention relates to a potato seed seedling raising and transplanting technology, in particular to a potato seed floating seedling raising and transplanting method which is used for producing potato seedlings with potato seeds. The potato seed floating seedling raising and transplanting method comprises the following steps: A, soaking and germination acceleration of potato seeds; B, building of a seedling raising shed; C, seed seedling raising; D, management of a floating pool; E, seedling raising shed management; F, hardening of seedlings; G, seedling standardization; H, transplanting. Byadopting the method, the emergence rate of potato seedling seeds is high, the seeds are saved, seedling raising is simple, convenient and rapid, the survival rate is high, healthy and strong seedlings are raised, and the production cost of potato seedlings is reduced.

The invention discloses a method for crossbreeding and aseptic sowing of renanthera coccinea, comprising the following steps of: carrying out hybridization by selecting orchid with obvious characters and high visual value as a hybrid female parent and renanthera coccinea as a male parent; carrying out aseptic sowing on a seed germination medium on the fruit obtained by successful pollination when being basically ripened but not splitted; after germinating, transferring the seeds to a healthy seedling medium; and growing the formed seedling in a test tube out of a bottle after being hardened under the illumination of natural light for 10 to 20 days, wherein the transplanting survival rate of seedling formation can reach 90% or more. The method has the characteristic of high hybrid success rate, and is particularly useful during taking orchid with obvious characters and high visual value as a hybrid male parent which is different from a renanthera coccinea parent in flowering phase. The unique medium and cultivation method are employed by the invention so that the hybrid seeds of renanthera coccinea have high germination, fast seedling formation and good seedling quality. The method has the advantages of strong operation, effective breeding, valuable application and the like.

The invention discloses a method for preparing the Cassia coating seed. The method comprises the steps that step one, drying of Cassia seed; step two, preparation of sodium carboxymethyl cellulose solution and crushing of Talc; step three, sodium carboxy methyl cellulose solution and a first layer of coating agent are sprayed on the surface of Cassia seed, then disinfectant solution is sprayed, and the first layer of coating seed is obtained; step four, a sodium carboxy methyl cellulose solution and a second layer of coating agent are sprayed on the surface of the first layer of coating seed, the second layer of coating seed is obtained; step five, after the sodium carboxy methyl cellulose solution and the third layer of coating agent are sprayed on the surface of the second layer of coating seed, wherein by mass fraction 10-30% of polyvinyl pyrrolidone solution is sprayed, after the drying, the Cassia coating seed is prepared. According to the method for preparing the Cassia coating seed, the Cassia coating seed is strong in disease resistance, fast in germination and seedling, can be effective in increasing the yield and quality of Cassia, and has considerable economic value.

The invention discloses a cuttage and quick propagation method for renanthera coccinea Lour. From February to March each year, renanthera coccinea Lour branches respectively provided with more than 15nodes are selected, leaves are cut off, then the branches are cut into cuttings respectively provided with 1-3 nodes, and cuts are formed through oblique cutting; the cuttings are put in a rooting solution and soaked for 10-30 minutes and then are taken out for airing, then the base portions of the cuttings are tightly wrapped with sphagna soaked with water, squeezed into seedling raising cups and pressed tightly, the cuttings are put in a greenhouse or shading shed with the shading rate of 70%-90% for culture, the temperature is kept to 20-30 DEG C after cuttage, and air humidity is kept to70%-95% till complete plants grow from stem nodes of the cuttings. The method has the advantages that seedling raising is quick, the survival rate after transplantation is high and the method can be completed without complicated facilities. The method can be directly applied to large-scale propagation of renanthera coccinea Lour, especially to Kunlun renanthera coccinea Lour, and has the great significance on development, utilization and genetic resource conservation.

The invention provides a method for increasing the seedling survival rate of intergroup distant hybrid seeds of paeonia. The method comprises the steps that intergroup hybrid seeds with very low seedling survival rate are screened through the character of seed coat cracking, and rapidly cultured into seedlings by adopting an in-vitro embryo culture technology, thereby increasing the seedling survival rate of the intergroup hybrid seeds and shortening the breeding cycle. Research finds that the combination of IAA, GA3 and activated carbon has a promoting function on in-vitro seedling survival of seed embryos, and a best in-vitro embryo seedling survival culture medium is obtained. Seed embryo root systems can rapidly elongate under the culture medium, true leaves germinate, so that the seedembryos can rapidly grow into seedlings, the average length of the true leaves of the embryo seedlings reaches 2.49 cm, and the average length of the roots reaches 4.74 cm. In a traditional seedlingraising mode, seeds of seed coat cracking with the very low seedling survival rate can rapidly grow into seedlings within 40 days, blades of the seedlings after transplanting survival are large, and the growth vigor is strong, thereby increasing the whole seedling survival rate of the distant hybrid seeds, and accelerating the breeding process of new varieties.

The invention discloses a cassia seed coating agent and a preparation and use method thereof. The cassia seed coating agent comprises the following components in parts by weight: 2-5 parts of chitosan, 10-12 parts of polyethylene glycol, red 1‑2 parts of mycin, 80‑120 parts of methyl cellulose, 1‑2 parts of boron fertilizer, 80‑150 parts of attapulgite, 100‑200 parts of diatomite, 50‑100 parts of silkworm excrement, 200 parts of vermicompost 300 parts, 200-300 parts of compound fertilizer and 1-2 parts of fungicide. At the same time, the invention also discloses a preparation method and a use method of the cassia seed coating agent. The prepared cassia seed coated seed has strong disease resistance, rapid germination and seedling growth, can increase the yield and quality of the cassia seed, and has considerable economic value .