CN109220261A - A kind of dove tree seedling breeding method - Google Patents

A kind of dove tree seedling breeding method Download PDF

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Publication number
CN109220261A
CN109220261A CN201810982269.2A CN201810982269A CN109220261A CN 109220261 A CN109220261 A CN 109220261A CN 201810982269 A CN201810982269 A CN 201810982269A CN 109220261 A CN109220261 A CN 109220261A
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China
Prior art keywords
dove tree
cuttings
cuttage
dove
seed
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Inventor
任启飞
周庆
李媛媛
范志伟
胡毅
陈彩霞
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Guizhou Botanical Garden (guizhou Institute Of Landscape Science And Guizhou Institute Of Botany)
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Guizhou Botanical Garden (guizhou Institute Of Landscape Science And Guizhou Institute Of Botany)
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Priority to CN201810982269.2A priority Critical patent/CN109220261A/en
Publication of CN109220261A publication Critical patent/CN109220261A/en
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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G2/00Vegetative propagation
    • A01G2/10Vegetative propagation by means of cuttings
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G17/00Cultivation of hops, vines, fruit trees, or like trees
    • A01G17/005Cultivation methods

Abstract

The invention belongs to plant propagations to cultivate field, disclose a kind of dove tree seedling breeding method, comprising: seminal propagation technology;Cutting propagation;After cuttings survives, to irrigate, loosen the soil in due course, weeding, fertilising and prevention and treatment disease pest, if being handled with ABT root-inducing powder cuttings bottom before cuttage.The present invention can enable the germination percentage of Structure of Seed of Davidia Involucrata reach 90% or more, reach as high as 98%, germinating time also shortened within 1 year.In addition, there are also many researchs for dove tree seedling morphology and seedling stage moisture and plant disease management, certain achievement is also all achieved.Cutting propagation processing method through the invention, can make nursery planting percent 6% or so, if being handled with ABT root-inducing powder cuttings bottom before cuttage, plant percent is up to 50%~60%.

Description

A kind of dove tree seedling breeding method
Technical field
The invention belongs to plant propagations to cultivate field more particularly to a kind of dove tree seedling breeding method.
Background technique
Currently, the prior art commonly used in the trade is such thatDove tree (Davidia involucrata Baill) is also known as Water pear or pigeon tree, are China distinctive Nyssaceae (Davidioideae) monotype platymiscium, and only a kind and 1 mutation, i.e., Dove tree and davidia involucrata var. vilmoriniana (D.involucrata var.Vilmor iniana (Dode) Warger).Dove tree is enjoyed in the world The good reputation of " Chinese pigeon tree " is referred to as " pearl in vast stretch of wooded country ", " plant living fossil " and " green panda ", is known as " north The most interesting and most beautiful xylophyta in temperate zone " is famous ornamental plantation tree species at home and abroad.By " the red skin of Chinese Plants Book " and " Chinese rare endangered plants register " include, be determined as first-grade state protection plant, be the big national treasure plant in China eight One of.Fossil shows with spore-pollen analysis: dove tree is the Tertiary Period ancient tropical few survivors tree species, is once widely divided on the Northern Hemisphere in earth history Cloth.As " plant living fossil ", dove tree experienced the great changes of weather, geology and flora development.Guizhou Province plant Dove tree child care work is carried out in garden since the phase at the end of the seventies in last century, has had accumulated germplasm materials and technical foundation money abundant Material.It is generally acknowledged that the development of Structure of Seed of Davidia Involucrata itself and design feature cause breeding difficult, cause population self-renewing difficult;Dove tree Germ plasm resource distribution is narrow, is isolated between endemic population serious;Natural cause climate change;Mankind's activity interference etc. is to cause Dove tree major reason in imminent danger.Forefathers are concentrated mainly on geographical distribution, the ecology of Davidia Involucrata Population to the research of dove tree Endangered Reason It learns on the macroscopic descriptions such as horizontal, basic raising technology and biological characteristics, but relevant spawning stock in imminent danger for dove tree, life Haircut educates, the research of genetic variation and genetic differentiation and relevant molecule biology etc. carry out it is also less.The reproductive success of dove tree depends on Many ecological factors, such as growth, pollination, fertilization, the illumination in Fruit Development Process, temperature, moisture, soil it is abiotic because The biotic factors such as the population variation of the quantity of son and pollinator, behavior, predator and seed dispersal person and individual behavior.Cause This deeper into dove tree in ground research microhabitat spawning stock and physiological and ecological characteristic etc. to illustrate dove tree endangered mechanism have it is important Realistic meaning.It may be it that competition and dove tree seedling and sapling illumination deficiency between dove tree and other dominant trees, which are caused to update and be obstructed, The big reason of in imminent danger one should reinforce the physiological ecological research of this respect, with the more thorough rare endangered mechanism of grasp dove tree.Dove tree Although the Mechanism of Dormancy of seed has many researchs, there are still very big disputes so far, and specifically which kind of suspend mode factor is sprouted in seed Control action is played in the process.1. first-grade state protection rare or endangered species-dove tree is famous famous-brand and high-quality tree species at home and abroad, It is the Important Economic tree species that China's export is earned foreign exchange, has high economy and scientific research value.2. due to Structure of Seed of Davidia Involucrata under natural conditions The reason of reproductive capacity is low, and Natural population updating ability is weak, and climate change and human activity are interfered in addition, so that Davidia Involucrata Population is on the point of Face extinction, dove tree species are urgently saved.3. rare or endangered species child care is the critical function in botanical garden, child care dove tree is botanical garden Great social responsibility.Construction dove tree child care, ornamental, scientific research base belonging to a category, development dove tree endangered mechanism and seeding propagation Correlative study has important value to dove tree child care.Meanwhile Guizhou Botanical Garden can be built with dove tree Botanical Garden and explore botanical garden The experience of orchard establishment belonging to a category.Though data is shown 4. there is wide research about Chinese Dovetree Propagation, the technical bottleneck of Chinese Dovetree Propagation is still Wait break through.The xylophytas natural propagation ability such as dove tree is very low, and Interior Seed contains the substance of certain sprout inhibition, and need through After-ripening is gone through, the cultivation of seedling needs longer Their Seed Germinating Period.In order to break Structure of Seed of Davidia Involucrata suspend mode, in terms of nursery often Using the mechanical damage seed law, intermittent warming method, chemical reagent facture, people and animals' urine infusion method, cuttage, sand storage, damp sand layer Area method handles seed, method that document shows current comprehensive Structure of Seed of Davidia Involucrata nursery, and improving Structure of Seed of Davidia Involucrata, to sprout uniformity most effective The method of method is still still wet sand sedimentation, and still, existing technology seedling cost is high, lacks molding industrial seedling rearing skill Art, and method caused by weather conditions difference because limiting to.
In conclusion problem of the existing technology is:The xylophytas natural propagation ability such as dove tree is very low.
Solve the difficulty and meaning of above-mentioned technical problem:Unified with nature weather conditions adaptation to local conditions, digs shallow hole outdoorly, prison The humidity and temperature of sand, the too low timely moisturizing of humidity are controlled, the excessively high drainage sunk well of taking shelter from rain of humidity guarantees seed storage environment, Seed mildew is reduced, vernalization process is accelerated.
Summary of the invention
In view of the problems of the existing technology, the present invention provides a kind of dove tree seedling breeding methods.
The invention is realized in this way a kind of dove tree seedling breeding method, comprising the following steps:
Step 1, seminal propagation technology dig shallow hole in outdoor ground using open excavation sand storage method, will be through outdoor processing In the seed hole of falling people crossed, every 30cm covers wet sand 10cm deeply, and ordinary circumstance need not take artificial measure, it is allowed to expose to the sun and rain, such as Arid for a long time is met, then should fill a little water in right amount, so that seed is kept wet, the sub- place of seed covering should be discharged in time if any ponding.
Step 2, cutting propagation, nursery do cuttings with 1 year raw branch, long 15.0---20.0cm, diameter 0.3cm or more, At least there are 2 internodes, 2 buds in each cuttings, notch does not hurt skin smoothly.
Step 3 after cuttings survives, be irrigated, be loosened the soil, weeding, fertilising and prevention and treatment disease pest, in due course if raw with ABT before cuttage Root powder handles cuttings bottom.
Further, in early March, the cuttage before soil rigidifying is frozen, bud is sprouted is careful whole before inserting for cuttage in the step 2 Ground uses sufficient base manure, keeps loosing soil, moisture sufficient;
Further, cuttage line-spacing 20cm, spacing in the rows 10cm in the step 2, based on straight cutting, cutting depth is because of environment item Part and it is different;Too deep oxygen in soil is insufficient, is unfavorable for cuttage rooting;It is exposed more to cross shallow branch, evaporation capacity is big, and the easy dehydration of cuttings is dry It is withered;Such as in cuttage very cold and dry, insert after upper end answer appropriate earthing;Under warm, wet condition, above the 1st bud Micro- open country table;Due to branch polarized phenomenon, when cuttage, it is sure not to insert, wants steady and sure after inserting, touch cuttings and soil, Prevent that gap occurs in cuttings lower end, fills permeable immediately after inserting.
In conclusion advantages of the present invention and good effect are as follows:
(1) present invention can enable the germination percentage of Structure of Seed of Davidia Involucrata reach 90% or more, reach as high as 98%, germinating time It shortens within 1 year.In addition, there are also many researchs for dove tree seedling morphology and seedling stage moisture and plant disease management, also all take Obtained certain achievement.
(2) through the invention the step of two cutting propagation processing methods, make nursery planting percent 6% or so, if before cuttage Cuttings bottom is handled with ABT root-inducing powder, plant percent is up to 50%~60%.
Detailed description of the invention
Fig. 1 is dove tree seedling breeding method flow diagram provided in an embodiment of the present invention.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to Limit the present invention.
Application principle of the invention is explained in detail with reference to the accompanying drawing.
As shown in Figure 1, dove tree seedling breeding method provided in an embodiment of the present invention, comprising the following steps:
S101: seminal propagation technology digs shallow hole in outdoor ground using open excavation sand storage method, will be through outdoor processed The seed hole of falling people in, every 30cm covers wet sand 10cm deeply, and ordinary circumstance need not take artificial measure, it is allowed to expose to the sun and rain, in case of Arid for a long time, then should fill a little water in right amount, so that seed is kept wet, the sub- place of seed covering should be discharged in time if any ponding.
S102: cutting propagation, nursery do cuttings with 1 year raw branch, long 15.0---20.0cm, diameter 0.3cm or more, often At least there are 2 internodes, 2 buds in a cuttings, notch does not hurt skin smoothly.
S103: after cuttings survives, to irrigate, loosen the soil in due course, weeding, fertilising and prevention and treatment disease pest, if being taken root before cuttage with ABT Powder handles cuttings bottom.
Cuttage is inserted preceding careful site preparation, is used sufficient in early March, the cuttage before soil rigidifying is frozen, bud is sprouted in the step 2 Base manure keeps loosing soil, moisture sufficient.
Cuttage line-spacing 20cm in the step 2, spacing in the rows 10cm, based on straight cutting, cutting depth is different because of environmental condition; Too deep oxygen in soil is insufficient, is unfavorable for cuttage rooting;It is exposed more to cross shallow branch, evaporation capacity is big, and the easy dehydration of cuttings is withered;Such as in skewer Insert when very cold and dry, insert after upper end answer appropriate earthing;Under warm, wet condition, above the 1st micro- open country table of bud be It can;Due to branch polarized phenomenon, when cuttage, it is sure not to insert, wants steady and sure after inserting, touch cuttings and soil, prevent under cuttings There is gap in end, fills permeable immediately after inserting.
Dove tree seedling breeding method provided in an embodiment of the present invention specifically includes the following steps:
One, seminal propagation:
Principle: dove tree fruit sclerotin is hard, and latter stage of ripening is long, has the special habit next year germinateed, germination percentage is extremely low, or even does not send out substantially Bud brings great difficulty for seeding and seedling raising.Wet sand sand storage method is to release the most common method of seed dormancy.The processing kind of sand storage method It is sub best but longer than the time of general seed treatment.
First step seed treatment: the mature seed that November current year is harvested removes pulp, cleans, dries in the shade, uses 1000mg The potassium permanganate weak solution of L is housed in wet sand after carrying out seed soaking disinfection 12h, is advisable with husky and seed ratio for 3:1-5:1 It is mixed thoroughly, carries out within every 7~10 days 1 humidification, the humidity of sand is made to remain at 70%~80% or so.
Second step seedbed arranges: first checking whether each sand bed draining is unimpeded, and whether sunshade net is intact before sowing.Sand bed It must plough deeply, be exposed to the sun 7 days;Cleaning sundries screens out big husky block;Then seedbed is carried out with the liquor potassic permanganate of 1000mgL Disinfection 2 days, it is rear flatten seedbed pour 1 time it is permeable, can be carried out sowing after 2 days
Third step seed takes out and pre-treatment: the seed by wet storage with bud mouth takes out and is soaked with 30%+20%ABT root-inducing powder Bubble, 50min or quickly dipped, wait broadcast.
The sowing of 4th step: the seed of processing is laid in seedbed according to the spacing of 10cm*10cm, bud mouth upward, first covers 5cm Thick pine tag fertile soil, then cover fine earth 5cm.It sprinkles profoundly water, carries out shade and Water-retaining Measure.
Two, cutting propagation
First step site preparation: slotting machine 1.2m wide, subsoil is careful smooth, pads 2-3cm100 mesh sand so as to draining, covers cuttage on sand Matrix 10cm (rural area soil is sieved according to rural area soil: fertile soil: perlite: vermiculite 1:1:1:1 mixing).
The processing of second step cuttings: 1 year raw branch is taken to do cuttings, long 15.0---20.0cm, diameter 0.3cm or more are each to insert At least there are 2 internodes, 2 buds on fringe, notch does not hurt skin smoothly, and cuttings carries out cuttings bottom with ABT root-inducing powder to impregnate half Hour processing (processing plant percent 50~60%)
Third step cuttage: cuttage is in early March, the cuttage before soil rigidifying is frozen, bud is sprouted, cuttage line-spacing 20cm, spacing in the rows 10cm, based on straight cutting, cutting depth is different because of environmental condition;Too deep oxygen in soil is insufficient, is unfavorable for cuttage rooting;Cross shallow branch Item is exposed more, and evaporation capacity is big, and the easy dehydration of cuttings is withered;Such as in cuttage very cold and dry, insert after upper end answer appropriate earthing; Under warm, wet condition, above the 1st micro- open country table of bud;Due to branch polarized phenomenon, when cuttage, it is sure not to insert, It wants steady and sure after inserting, touches cuttings and soil, prevent that gap occurs in cuttings lower end, in the appropriate earthing pressure of cuttings base portion after cuttage It is real, fill permeable immediately after inserting.
4th step cuttage management: guarantee slotting machine 70-80% humidity, periodically to irrigate, loosen the soil in due course, weeding, fertilising and Prevent and treat disease pest.
Application principle of the invention is further described below with reference to embodiment.
Embodiment 1
1 introducing and planting
The wild seedling of 1.1 dove trees introducing a fine variety and managing
Since 2013, from Guizhou Nayong, Kuankuoshui, Mount Fanjing, Wolong Natural Reserve, Sichuan Province, LongXi-Hongkou, Shennongjia, Hubei Province, Wild dove tree is introduced a fine variety in back river, three Jiangkou, Yunnan, Shaanxi Qian Jiaping, Hunan Huping mountain nature reserve, 11 nature reserve areas such as Baishuijiang national reserve in Gansu Province 650 plants, remove all blades when introducing a fine variety, to diameter 5cm, the dove tree of plant height 3m or more only retains trunk 2.5m or so;It plants in plant Object garden introduction and Experiment base, pours root water after transplanting, first 2 weeks after cultivation, water 1 time weekly, and annual early spring, Qiu Moshi are organic later Fertilizer each 1 time, growth period imposes urea 1 time.
1.2 introduce a fine variety dove tree survival rate statistics
1 difference of table is introduced a fine variety place survival rate and is compared
Serial number Introduce a fine variety place Introduce a fine variety quantity The end of the year 2014 survived number (rate) The end of the year 2015 survived number (rate)
1 Guizhou Nayong 100 83 81
2 Guizhou Kuankuoshui 50 47 47
3 Fanjingshan, guizhou 50 50 48
4 Shaanxi Qian Jiaping 100 98 92
5 Shennongjia, Hubei Province 50 44 40
6 Hubei Houhe 50 41 39
7 Wolong Natural Reserve, Sichuan Province 50 39 39
8 Sichuan LongXi-Hongkou 50 40 37
9 Hunan Huping mountain nature reserve 50 42 39
10 Three Jiangkou, Yunnan 50 —— 46
11 Baishuijiang national reserve in Gansu Province 50 —— 41
It is total 650 88% 84.5%
It was observed and recorded by 2 years, 650 introduced a fine variety plant dove tree, the 2nd year dead 15.5%, now remains 549 plants of dove tree.In death Dove tree in, nursery stock is bigger, and the death rate is higher, the nursery stock specification that optimum is introduced a fine variety be 0.5-1.5m height, 1-2cm diameter Dove tree.
The overwintering more summer of 1.3 dove trees
1. cold-resistant
Dove tree cold hardiness is stronger, when transplanting the 1st year mercury dropped to 0 DEG C or so, 80% it is tender slightly endure cold with spire, freeze After releasing, here leaf slightly withers, and then dries up, but sprout young shoot unimpaired, is not affected by temperature substantially within the 2nd year.
2. the more summer
From the point of view of observation in 2 years, dove tree generally can over summering (seedling needs necessary shading measure).Only show as on a small quantity Blade calcination.For shade, nursery stock type, difference in size, foliar symptoms are not also identical.Ratio four of the single cropping in field The foliar symptoms of Zhou Yougao tree shade are high.
1.4 endangering the pest and disease damage of dove tree
Mainly there are aphid, thrips, red spider, acrosternumhilare, sawfly, looper and grub etc., disease has chlorosis, tikka, rotten.Danger It is grub, aphid, chlorosis and rotten that evil is most heavy.
The phenology of 1.5 dove trees
The dove tree of introduction was mainly shown as on March, the middle ten days bud is sprouted and expanded, by mulberry~green red;Mid or late March bud Bud falls off, into leaf stretching period;Late March~late June takes out the tip;Late June~early July terminal bud is formed;Late October blade Jaundice;November early and middle ten days leaf abscission.
Embodiment 2
2 raising technologies
The breeding of dove tree has carried out cuttage and seed seedling-raising.Since cutting propagation coefficient is high, energy under conditions of seed is few A large amount of saplings are provided, single plant excellent genes are able to maintain in research, at the same time, are convenient for introducing a fine variety and fitting at a distance since seed has The characteristics of Ying Xingqiang, has also carried out seed seedling-raising test.
The test of 2.1 cutting propagations
1. the selection and processing of cutting
Spray: the healthy and strong branch for selecting current year to sprout is cut into long 7~15cm, the cutting of 2~3 sections, every cutting band leaf 1~3 Piece.Before inserting with 25,50, IBA, NAA, IAA aqueous solution of 100mg/kg impregnate 12h respectively.Stiff wood: since the nineties of botanical garden The wild dove tree introduced a fine variety over the years from Mount Fanjing is elite stand, adopts item October.10~15cm is grown in cutting, and 100 are 1 beam, with wet sand point Layer buries, and above covers fine sand 1cm.It is impregnated respectively for 24 hours before inserting with the medicament of various concentration.
2. slotting machine and cottage method
Cool canopy slotting machine: slotting machine is placed in the cool canopy of high 1.8m.Bed long 5m, wide 1m.Bed inner stuffing is 3 layers: lower layer is 10cm loess, middle layer are 20cm fine earth, and upper layer is 5cm perlite.The fixed wood cover covering for having polyethylene film of slotting machine is protected It is wet.Soil is sterilized with 0.5% potassium permanganate solution (half a day in advance).Cuttage depth is the 2/3 of cutting, seeding row spacing 10cm ×10cm.Water drenching immediately after inserting, covers film.After dove tree takes root, film is gradually thrown off.
3. test result
The character and rooting rate of spray cutting
Different age maternal plant rooting of cuttings rate compares, and mother tree age is bigger, and rooting rate is smaller.The dove tree seedling of 5-8 years age of trees is most suitable Cutting is done in conjunction.
The different age of tree dove trees of table 2, which take root, compares
The age of tree/year Cutting number/item It takes root cutting number/item Rooting rate/%
1—5 200 103 51.5%
5—8 200 136 68%
8—10 200 95 47.5%
10—15 200 52 26%
Note: the above cutting is the IBA processing of 50mg/kg.
HORMONE TREATMENT is taken root with spray cutting
Cutting using 30,50, IBA, NAA, IAA3 kind aqueous solution of 100mg/kg impregnate 12h respectively.Cutting general 7~ 10d grows callus, and 24~40d grows new root.More obvious with the effect that IBA, NAA are handled, rooting rate is 50%- 100%, control group highest rooting rate is 10%.It is best, 100mg/kg with the IBA processing of 50mg/kg from the point of view of root long gesture Take second place, 30mg/kg takes second place again.It is poor that IAA handles rooting of cuttings rate effect.
Influence of 3 hormone of table to dove tree spray
Hardwood cutting cutting is taken root
It has carried out different temperatures sand to hardwood cuttings to bury, the slotting borders of difference, different agents processing (30,50,100mg/kg IBA, NAA, IAA aqueous solution and 0.5%KMnO4, 0.1%AgNO3Aqueous solution impregnates for 24 hours respectively).Experiment results proved, dove tree are hard Stem cutting item is buried in 15~30 DEG C of sand, and by 19 days, clip expanded, and grows up to flourishing milky callus, and cutting callus rate reaches 80%~90%.No matter which kind of the above-mentioned processing of dove tree hardwood cuttings, can sprout after late March, lamina, problem is 4 after cuttage Cutting in~June is dead successively.Compared with shoot cutting, the obvious rooting rate of hardwood cutting is low, the highest base portion germinating of rooting rate Lower section is also only up to 14.7%.But since hardwood cuttings is readily transported, saves, solving the problems, such as to take root still has further Necessity of solution.
The seed seedling-raising of 2.2 dove trees
1. test process
The Sand culture of not same period, different temperatures are carried out.Since dove tree kind shell is hard, bad hydraulic permeability, to keep moisture straight It taps into core, can observation make seed emerge in advance, carry out going sharp processing to part seed nucleus.
2. test result
Experiments have shown that same period sand storage does not influence less seeding ratio.The sand storage Structure of Seed of Davidia Involucrata under condition of different temperatures, Emergence rate is in addition to low temperature sand storage emergence rate is lower, remaining processing is to dove tree emergence rate without facilitation.Sharp Structure of Seed of Davidia Involucrata is removed, completely Germinating power is lost, kernel is mouldy to rot.
3. the growth of Structure of Seed of Davidia Involucrata seedling
After dove tree sowing or sand storage, December, kind shell started to burst, and stretched out white radicle, coming year late March~the first tenday period of a month in May Leaf is unearthed, and true leaf occurs after 7~10d, and late April~mid-July takes out slightly, and mid-July~early August terminal bud is formed.In 10 months Ten days~late October leaf turns yellow.Late October is to leaf abscission mid-November.As annual plant height 28.3cm, ground diameter 0.5cm.The In June, 2 counts, average plant height 53.3cm, ground diameter 1.07cm.
By the Domestication of 3 years multipair dove trees, the dove tree introduced plant garden of former wild state is cultivated.Dove tree Shady and cool humidity is liked, in addition to weather anomalous year, generally energy safe overwintering gets over the summer.Drought in summer is short of rain, can make dove tree blade calcination, It is even dead.Cutting propagation is more successful with spray, tentatively understands fully that cutting is strong, it is raw to cutting to insert the factors such as phase, HORMONE TREATMENT The influence of root.Since shoot cutting requires shady and cool, high humidity environment, never direct sunlight, is air-dried, otherwise blade easily dehydration It is withered.The cuttage seeding of breeding is higher than seed seedling foliar symptoms.Wet sand sand storage method is releasing Structure of Seed of Davidia Involucrata suspend mode the best way, but Time than general seed treatment is long.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.

Claims (3)

1. a kind of dove tree seedling breeding method, which is characterized in that the dove tree seedling breeding method includes:
Step 1 digs shallow hole in outdoor ground using open excavation sand storage method, will through in the outdoor processed seed hole of falling people, Every 30cm covers wet sand 10cm deeply;
Step 2, cutting propagation, nursery are cuttings, long 15.0-20.0cm, diameter 0.3cm or more with 1 year raw branch;
Step 3, after cuttings survives, irrigate, loosen the soil, weeding, fertilising and prevention and treatment disease pest, before cuttage with ABT root-inducing powder to cuttings bottom Portion's processing.
2. dove tree seedling breeding method as described in claim 1, which is characterized in that cuttage is in early March in the step 2.
3. dove tree seedling breeding method as described in claim 1, which is characterized in that cuttage line-spacing 20cm in the step 2, Spacing in the rows 10cm.
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Cited By (2)

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CN108990462A (en) * 2018-07-04 2018-12-14 彝良县鸿志义观赏苗木种植专业合作社 A kind of Structure of Seed of Davidia Involucrata method for culturing seedlings of high-survival rate
CN110896826A (en) * 2019-11-27 2020-03-24 贵州省植物园 Begonia greenhouse field cultivation substrate and cultivation method adopting substrate

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CN105165373A (en) * 2015-10-21 2015-12-23 江苏省中国科学院植物研究所 Cutting seedling raising method of Davidia involucrata Baill
CN107347651A (en) * 2017-08-30 2017-11-17 绵阳师范学院 The cultural method that dove tree hibernaculum quickly breeds
CN107580894A (en) * 2017-10-18 2018-01-16 贵州省金黔草农业有限公司 A kind of davidia involucrata var. vilmoriniana cuttage breeding method

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