CN103430806B - Reshaping and cultivating method of pear tree with single trunk and two main branches - Google Patents

Reshaping and cultivating method of pear tree with single trunk and two main branches Download PDF

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Publication number
CN103430806B
CN103430806B CN201310395060.3A CN201310395060A CN103430806B CN 103430806 B CN103430806 B CN 103430806B CN 201310395060 A CN201310395060 A CN 201310395060A CN 103430806 B CN103430806 B CN 103430806B
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major branch
branch
shoot
major
trunk
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CN103430806A (en
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刘照亭
芮东明
鲁群
毛妮妮
刘伟忠
刘亚柏
阎永齐
蒋水平
郭建
刘吉祥
任俊鹏
王志娟
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CHONGQING YICHI FRUIT PLANTING Co.,Ltd.
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Zhenjiang Wanshan Hongbian Agriculture Garden
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Abstract

The invention relates to a reshaping and cultivating method for a pear tree with a single trunk and two main branches. The reshaping and cultivating method specifically comprises the following steps: planting a plantlet at a 1.5m-1.7m position of the height of the trunk; selecting and remaining two strong branches or strong buds which are cultivated into two main branches reversely growing along the rows at a basal angle of 45 degrees; fixing the main braches on a horizontal shed frame when the main branches reach racking points, and inducing the extended branches of the main branches to an inducing rod which forms a 45-degree angle with the shed frame, wherein extended fruiting branch groups which are in parallel arranged and vertically extend into the rows are provided on the main branches; and gently and slowly pushing, binding and fixing the two main branches to the flat shed frame surface in autumn of the next year. The reshaping and cultivating method disclosed by the invention is quick in crown forming speed, capable of completing the crown structure cultivation 3 years after the planting to begin to enter into an initial fruiting period which is increased year by year, and high in fruit quality uniformity. Meanwhile, the pruned crown does not contain secondary branches, and therefore, the reshaping and cultivating method has the advantages of being simple to prune, convenient to manage, good in ventilation and light transmission condition and the like.

Description

A kind of single trunk two major branch pear tree form culture method
Technical field
The invention belongs to fruit tree shaping technical field of cultivation, be specifically related to a kind of single trunk two major branch pear tree form culture method.
Background technology
Pears are rose family Pyrus L, perennial deciduous fruit tree, arbor, and leaf is avette, spend how white, fruit succulence, edible.Gather during fruit maturation between 8 ~ September, using fresh herb or section are dried.Principal item has Ussurian pear, white pear, sand pear, foreign pears four kinds, is distributed in North China, northeast, northwest and Yangtze river basin each province more.The adaptability of environment is stronger than apple to external world.Cold-resistant, drought-enduring, waterlogging, Salt And Alkali Tolerance.Its shaping methods is mainly the happy shape of shed frame type and natural open centre shape tree-like without frame, and its pruning main points are described below.
1, the happy shape planting distance of shed frame type 6 × 6 meters, the height of tree 2 meters, trunk is high about 1 meter, major branch and trunk angle 45 degree, three scaffold limbs are that 120 degree of azimuths extend, each major branch configuration 2 ~ 3 secondary major branches, and the first secondary major branch is from major branch base portion about 1 meter, interval 80 cm cultivates the second secondary major branch at opposite side, secondary major branch and main branch angles 90 degree.Be 90 degree at major branch and secondary major branch both sides and configure side shoots, homonymy side shoot spacing distance is 50 ~ 70 centimetres.
2, natural open centre shape frame pears planting density is rarer, within first 5 years, to cultivate skeleton, go into operation late, and frame material cost is high, is still difficult to popularity at present.According to the actual conditions of current our province pears planting culture, absorb the cultivation experience of Japanese frame pears, ad hoc meter is without the natural open centre shape of secondary major branch.Tree management is: planting distance 3 ~ 5 meters × 4 meters, the height of tree 2.5 meters, high 60 cm of trunk, major branch and trunk base angle 50 ~ 60 degree, haunch about 50 degree, 30 degree, tip angle, and three scaffold limbs are that 120 degree of azimuths extend, and each major branch both sides are 90 degree of configuration side shoots.Homonymy side shoot spacing distance 50 ~ 70 centimetres.But said method is also not suitable with the special weather conditions in Jiangsu Province, and enter fruiting period evening.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of single trunk two major branch pear tree form culture method.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is:
A kind of single trunk two major branch pear tree form culture method, comprise the following steps: First Year: after seedling planting, select full bud surely to do, nursery stock stays the most healthy and the strongest young sprout of 1 root growth upwards to grow after germinateing, all the other buds are erased, when young sprout grows to 20 centimetres, vertically insert 1 bamboo pole near planting stock, young sprout is fixed on bamboo pole; When young sprout grows to 1.5 ~ 1.7 meters, by the pinching of young sprout tip, to select and remain 2 vigorous branches or strong bud, being trained two base angles is 45 degree of major branches following back growth, major branch is fixed on when reaching at added to lure on flat frame and by major branch elongated shoot to cause with frame and is 45 degree and lures and draw bar, stayed full lateral bud to cut to major branch elongated shoot when the upper winter cuts to cut, remove major branch elongated shoot competitive branch;
Second Year: continue to lure after the full lateral bud rudiment of major branch elongated shoot and draw elongation growth, and keep major branch elongated shoot growth vigor, the young sprout that bud is sprouted under lateral bud or side that major branch is selected and remain makes side shoot, homonymy stays a side shoot every 40cm, and side shoot is fixed on flat frame face to the both sides tractive of major branch, keep arranged in parallel on major branch, the length of vertically stretching in the ranks puts fruit bearing shoot, major branch back does not stay bough group, major branch back sprout bud in early days length carry out pinching process lower than during 10cm, pinching again after germination, pinching 3 ~ 4 times repeatedly, be trained fruit spur, pressing down bondage gently to this two major branch autumn is fixed on flat frame face, major branch elongated shoot lures to draw and raises, continue to stay full lateral bud to cut to major branch elongated shoot when winter cuts to cut, remove major branch elongated shoot competitive branch, side shoot on major branch wipes out top young sprout 25 ~ 35cm, stays outer bud or lateral bud to prune,
3rd year: continue to lure to draw after the full lateral bud rudiment of major branch elongated shoot and raise elongation growth, and keep major branch elongated shoot apical dominance, on major branch, base portion cultivated medium-sized branch group, branch group interval 60 ~ 80cm; Small branch group and unijunction fruit branch are then cultivated in major branch top, small branch group interval 30 ~ 40cm, unijunction fruit branch interval 15 ~ 20cm, pressing down bondage gently to major branch elongated shoot autumn is fixed on flat frame face, carry out retraction to the medium-sized branch group on major branch, small branch group when winter cuts to upgrade, the tree-like and shaping of pear tree single trunk two major branch shape completes substantially.
The structure of described frame is: frame height 1.9m, build with concrete column, side column horizontal spacing is 4m, longitudinal pitch is 6m, the outer squint of corner post, side column and ground angle at 45 °, capital end iron wire is fixed, surrounding and side column bracing wire No. 8 galvanized wires, side column weaves into 4m × 6m grid between bracing wire with No. 10 galvanized wires, each crosspoint fore-set vertical support to bracing wire in the middle of frame, longitudinally three No. 12 galvanized wires are drawn in every bar fore-set band both sides, and spacing is 0.4m successively, and side column and the distance between corner post and the most contiguous fore-set can be floated according to reality.
Described fore-set length, width and height specification is the concrete column of 2.0m × 0.06m × 0.06m.
Described side column length, width and height specification is the concrete column of 2.7m × 0.1m × 0.1m.
Described corner post length, width and height specification is the concrete column of 3.2m × 0.14m × 0.14m.
The invention has the beneficial effects as follows: tree crown of the present invention is soon shaping, within after general field planting 3 years, can complete Crown Structure and cultivate, start to enter the just fruit phase, and rise year by year, fruit quality regularity is high; Meanwhile, the tree crown be trimmed to, not containing secondary scaffold branch, has and prunes the advantages such as simple, convenient management, ventilation and penetrating light condition are good.
Accompanying drawing explanation
Fig. 1 is the end perspective view of the present invention's one group of frame.
In accompanying drawing, 1 is No. 8 galvanized wires; 2 is No. 10 galvanized wires; 3 is No. 12 galvanized wires; 4 is corner post; 5 is side column; 6 is fore-set.
Embodiment
Below preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
The embodiment of the present invention comprises:
The enforcement time: 2010 ~ 2013
Implement place: white rabbit town, Jurong City of Jiangsu Province Bai Zhishan Ecological Orchard
(1), instantiation is implemented:
Select kind: abundance of water, golden pear;
(2) implementation method:
Comprise:
(1) field is selected: select soil layer to loosen deep, the soil that the content of organic matter is high.Optimum pH 5.5 ~ 7.5.
(2) frame is built: frame height 1.9m, build with concrete column, corner post 4 length, width and height specification is 3.2m × 0.14m × 0.14m, side column 5 specification is 2.7m × 0.1m × 0.1m, fore-set 6 specification is 2.0m × 0.06m × 0.06m, side column horizontal spacing is 4m, longitudinal pitch is 6m, and corner post 4, side column 5 squint outer with ground angle at 45 °, capital 6 end iron wire is fixed.Surrounding and side column 5 bracing wire No. 8 galvanized wires 1, weave into spacing 4m × 6m grid with No. 10 galvanized wires 2 between side column 5 pairs of bracing wires, each crosspoint fore-set 6 vertical support to bracing wire in the middle of frame.Longitudinally three No. 12 galvanized wires 3 are drawn in every bar fore-set band both sides, and spacing is 0.4m successively.Side column and the distance between corner post and the most contiguous fore-set can be floated according to reality.
(3) field planting ditch is dug: the field planting ditch excavating wide 80cm ~ 100cm, dark 40 ~ 50cm in field planting row.First insert 1000kg ~ 1500kg straw or weeds for every mu, after inserting straw or weeds, cover native about the 10cm of table, more every mu is executed organic base manure 1500 ~ 2000kg, the fused calcium magnesium phosphate 50 ~ 75kg such as chicken manure, compound potassium sulfate fertilizer 20 ~ 30kg mixes with soil, fills out while having peace of mind.When banketing to overhead about 5 ~ 10cm, cover subsoil and pile low higher than 15 ~ 20cm both sides, face, ridge in the middle of the high field planting row in full shape.
(4) field planting:
Mid-February, spacing in the rows was 6 meters to early March field planting, and line-spacing is 4 meters.Select suitable pear tree nursery stock, require that nursery stock is healthy and strong, branch is healthy and strong, tissue enriches, and degree of lignification is high, and trunk is clear and definite, well developed root system and complete, main root reaches 30cm, has more side root and fibrous root, root system is without splitting, have the bud of complete stalwartness, nursery stock has no mechanical damage, without damage by disease and insect, not dehydration, possesses exuberant vitality.Root system 70% thiophanate methyl wetting powder, 700 times of liquid disinfectants before field planting, stem 3 ~ 5 Baume degrees lime sulfurs are sterilized.
Shoot root is placed on field planting row field planting point, nursery stock is held up directly.Root is made in order rear earthing and having peace of mind, usual earthing is under grafting mouth, and trunk selects full bud surely to do.Water permeable after, root week uses black plastic mulching, water conservation moisturizing.
(5) pollinated variety
Select pollinated variety, namely basically identical with the main breed florescence, pollen affinity is strong, and after pollination, percentage of fertile fruit is high mutually, the kind that self economic worth is also high.By adjacent with main breed for pollinated variety field planting.
(6) irrigate
When water capacity lower than 15% ~ 20% time, must pour water.The method such as pouring, tubule short stream, drip irrigation can be adopted.Watering time mainly the budding period, Fruit and Drought in Autumn time.
(7) pruning
First Year: select full bud surely to do after seedling planting, nursery stock stays the most healthy and the strongest young sprout of 1 root growth upwards to grow after germinateing, and all the other buds are erased, and when young sprout grows to 20 centimetres, vertically inserts 1 bamboo pole, be fixed on by young sprout on bamboo pole near planting stock; When young sprout grows to 1.5 ~ 1.7 meters, by the pinching of young sprout tip, select and remain 2 vigorous branches or strong bud, being trained two base angles is 45 degree of major branches following back growth, is fixed on to lure on flat frame and by major branch elongated shoot to cause with frame to be 45 degree and to lure and draw on bar when major branch reaches at added.Stay full lateral bud to cut to major branch elongated shoot when winter cuts to cut, remove major branch elongated shoot competitive branch.
Second Year: continue to lure after the full lateral bud rudiment of major branch elongated shoot and draw elongation growth, and keep major branch elongated shoot growth vigor.The young sprout that bud is sprouted under lateral bud or side that major branch is selected and remain makes side shoot, and homonymy stays a side shoot every 40cm, and is fixed on flat frame face by side shoot to the both sides tractive of major branch, keep arranged in parallel on major branch, vertically the length of stretching in the ranks put fruit bearing shoot.Major branch back does not stay bough group, and the bud that major branch back is sprouted length can carry out pinching process lower than during 10cm, pinching again after germination in early days, and pinching 3 ~ 4 times, is trained fruit spur repeatedly.Autumn presses down bondage gently to this two major branch and is fixed on flat frame face, and major branch elongated shoot lures to draw and raises.Continue to stay full lateral bud to cut to major branch elongated shoot when winter cuts to cut, remove major branch elongated shoot competitive branch; Side shoot on major branch wipes out top young sprout 25 ~ 35cm, stays outer bud or lateral bud to prune.
3rd year: continue to lure to draw after the full lateral bud rudiment of major branch elongated shoot and raise elongation growth, and keep major branch elongated shoot apical dominance.In on major branch, base portion cultivates medium-sized branch group, branch group interval 60 ~ 80cm; Small branch group and unijunction fruit branch are then cultivated in major branch top, small branch group interval 30 ~ 40cm, unijunction fruit branch interval 15 ~ 20cm.Autumn presses down bondage gently to major branch elongated shoot and is fixed on flat frame face.When winter cuts, the medium-sized branch group on major branch, small branch group are carried out retraction and upgraded.Tree-like and the shaping of pear tree single trunk two major branch shape completes substantially.
The renewal of fruit-bearing shoot cluster on major branch to be noted after single trunk two major branch shape pear tree enters the full bearing period, make it keep the rejuvenation of fruit-bearing shoot cluster.
(8) flower and fruit thinning
Flower thinning carries out to the florescence at bud stage, and fruit thinning starts for one week after fallen flowers, urgent.Interval between branch is that about 20cm stays an inflorescence, and stay the 2nd of inflorescence the to the 4th, each inflorescence stays 1 ~ 2 flower.Be suitable for load capacity 120% ~ 130% quantity according to fruit and dredge flower bud fruit thinning in inflorescence separation period.Fixed fruit is the latest earlier than after fallen flowers one month.
(9) bagging
Pouch-type application pears bag special, specification is 150mm × 195mm, and bagging time is for spending latter 30 ~ 40 days.A sterilization, insecticide should be sprayed before bagging.
(10) gather
Appropriate to the occasion gently adopting of gathering is put down gently, lives fruit slightly reverse with hand rest, takes along above fruit branch side.Fruit will be gathered according to mature condition in batches.Fruit picking bamboo, cane basket or plastic crate, basket or plastic crate should not be excessive, pad the piece of sack or blank sheet of paper in basket or plastic crate.Fruit puts 1 ~ 2 layer in basket or plastic crate.
(11) extermination of disease and insect pest
Major Diseases:
1. pear scab
Cultural control: strengthen management, increasing application phosphorus potassium fertilizer, strengthens tree vigo(u)r, improves resistance against diseases; After fruit harvesting, cleaning fallen leaves, wipe out the disease tip in conjunction with winter pruning, concentrate and to burn or buried, reduce germ hibernating base.
Chemical control: a) spray 12.5% olefin conversion wetting powder 2000 times before rudiment; Or 3 ° of Be ~ 5 ° Be lime sulfurs; B) medicine control is sprayed in control in vegetative period from late April, and the medicament selected has 12.5% special spectrum azoles wetting powder, 3000 ~ 5000 times of liquid, 40% lucky star missible oil, 6000 ~ 8000 times of liquid, 10% Difenoconazole, 3000 times of liquid.
2. Pear black spot
Cultural control: do garden work clearly autumn well, remove disease leaf, concentrate and burn pathogeny; Strengthen cultivation management.Applying organic manure, phosphorus potash fertilizer, strengthen tree vigo(u)r, improves resistance against diseases.
Chemical control: a) pear tree sprays 5 ° of Be lime sulfurs before germinateing, and forces down bacterium source of surviving the winter; B) Growing season before spending, spend after each spray bactericide, execute a medicine every 15d, continuous spraying 5 ~ 6 times later.Select medicament: 50% iprodione wetting powder 1000 ~ 1500 times liquid, 10% Polyoxin wetting powder, 1000 ~ 1500 times of liquid, 70% mancozeb or 80% spray gram, raw greatly M ~ 45 wetting powder 600 ~ 800 times of liquid, 1: 2: 240 times of bordeaux mixture etc.
3. rust of pear
Cultural control: remove alternate host.Eliminate the Bai Leishu such as juniper, cypress around orchard, or before pear tree germination in spring, these plants are sprayed 20% powder rust missible oil.
Chemical control: Hua Qian, spend rear each spray medicine to carry out prevention & protection.Selectable medicament has: triadimefon missible oil 1000 ~ 1500 times of liquid of 20%, the peaceful emulsion of the rust 400 times of liquid etc. that wither of 20%.
4. ring spot
Cultural control: scrape disease skin and eliminate bacterium source, daubing medicament has: Fubiqing 2 ~ 3 times of liquid, 5% octicin solution aqua, 30 ~ 50 times of liquid or 5 ° of Be degree lime sulfurs.The rational application of fertilizer, enriches phosphorus, potash fertilizer, strengthens tree vigo(u)r.
Chemical control: 50% carbendazol wettable powder 500 times liquid; 1: 2 ~ 3: 200 ~ 240 times of bordeaux mixture; 50% carbendazol wettable powder 500 times liquid+90% epidemic disease frost spirit, 600 times of liquid.Above medicament is used alternatingly.
Major Pests
1. oriental fruit moth
Cultural control: when building garden, should avoid and peach companion planting, or closely plant, and reduces oriental fruit moth transfer and causes harm; Strike off tree slightly splits in conjunction with clear garden and stick up skin, eliminate Overwintering Larvae; Early stage wipes out the peach tip that oriental fruit moth is caused harm.
Chemical control: can in conjunction with control peach fruit borer medication control in late May to early June.A medicine is sprayed every about 10 ~ 15d.Medicament has: 20% goes out sweeps sharp missible oil 3000 times of liquid, 2.5% time missible oil, 2000 times of liquid etc.
2. pear fruit borer
Cultural control: prune in conjunction with pear tree, wipe out worm bud, or extract killed bud early spring.
Chemical control: grasp the Overwintering Larvae flower forward bud phase, turn fruit phase and first and second generation larvae hatch Sheng phase spray medicine control.Pesticide control is with preventing and treating oriental fruit moth.
3. pear sucker
Cultural control: early spring scrapes bark, does garden clearly well, eliminates winter generation adult.
Chemical control: come out of hibernation the Sheng phase at over-wintering adult, Hua Qian, spends rear first generation nymph occurance peak, contains and spends rear about 30d first generation adult eclosion to contain the control of phase spray medicine.Selectable agricultural chemicals: 10% imidacloprid wettable powder 4000 times liquid, 20% goes out and sweeps sharp missible oil 3000 times of liquid, 2.5% time missible oil, 2000 times of liquid.
4. Janus piri
Cultural control: Growing season should be wiped out the killed withered tender tip in time and properly destroy in time.
Chemical control: medicament has: 90% trichlorphon 800 times liquid, 20% fenvalerate missible oil, 2000 times of liquid.
(12) fertilizer practice
1. base manure
Fertilization time is (mid-September ~ mid or late October) after fruit harvesting.Fertilizer type, based on fertilizer, mixes fused calcium magnesium phosphate.Namely annual fertilizer and Phosphorus Fertilizer Rates once apply.Method is with ring-type, arcuation, radial ditch spread (furrow width 30cm ~ 50cm, dark 30cm ~ 40cm).Fertilizer In Autumn nitrogen quantity accounts for 50% (containing fertilizer and available nitrogen) of annual total amount of nitrogen.
2. topdress
Fertile before rudiment: about 10d before rudiment (late March ~ 4 month at the beginning of), based on nitrogenous fertilizer, amount of application of nitrogen fertilizer accounts for 20% of annual nitrogen.
Hua Houfei: May time early and middle ten days, based on potash fertilizer, K Amounts is 60% of annual potassium element, and amount of application of nitrogen fertilizer accounts for 20% of annual nitrogen.
Fruit is fertile: the time early June ~ mid-July, be advisable with multi-elements composite fertilizer.Amount of application of nitrogen fertilizer accounts for 10% of annual nitrogen, and K Amounts accounts for 40% of annual potassium element.
Top dressing: moistening, calm weather the morning ten time front or afternoon four time after, foliar spray.Concrete time, kind, concentration are: florescence spray 0.2% ~ 0.3% boric acid; Growth 0.2% ~ 0.3% urea in early stage and 0.3% potassium dihydrogen phosphate; Later growth sprays 0.3% potassium dihydrogen phosphate.
(3) implementation result
The conventional cultivation i.e. pear tree of flat canopy cultivation (seeding row spacing is 6 × 6m) of three major branches is compared.Table 1 is found out, current increment is comparatively remarkable compared with the control.
Table 1: increment inventory table (2010, annual)
As shown in Table 2, the pear tree cultivated under this cultivation method is apparently higher than contrast on single fruit weight, soluble solid content, and this cultivation method fully effectively can utilize luminous energy as seen, promotes plant vegetative growth and reproductive growth.
Table 2: fruit bearing habit information slip (2013, life in 4 years)
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize description of the present invention to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.

Claims (5)

1. a single trunk two major branch pear tree form culture method, is characterized in that comprising the following steps:
First Year: select full bud surely to do after seedling planting, nursery stock stays the most healthy and the strongest young sprout of 1 root growth upwards to grow after germinateing, and all the other buds are erased, and when young sprout grows to 20 centimetres, vertically inserts 1 bamboo pole, be fixed on by young sprout on bamboo pole near planting stock; When young sprout grows to 1.5 ~ 1.7 meters, by the pinching of young sprout tip, to select and remain 2 vigorous branches or strong bud, being trained two base angles is 45 degree of major branches following back growth, major branch is fixed on when reaching at added to lure on flat frame and by major branch elongated shoot to cause with frame and is 45 degree and lures and draw bar, stayed full lateral bud to cut to major branch elongated shoot when the upper winter cuts to cut, remove major branch elongated shoot competitive branch;
Second Year: continue to lure after the full lateral bud rudiment of major branch elongated shoot and draw elongation growth, and keep major branch elongated shoot growth vigor, the young sprout that bud is sprouted under lateral bud or side that major branch is selected and remain makes side shoot, homonymy stays a side shoot every 40cm, and side shoot is fixed on flat frame face to the both sides tractive of major branch, retain on major branch arranged in parallel, the length of vertically stretching in the ranks puts fruit bearing shoot, major branch back does not stay bough group, major branch back sprout bud in early days length carry out pinching process lower than during 10cm, pinching again after germination, pinching 3 ~ 4 times repeatedly, be trained fruit spur, pressing down bondage gently to this two major branch autumn is fixed on flat frame face, major branch elongated shoot lures to draw and raises, continue to stay full lateral bud to cut to major branch elongated shoot when winter cuts to cut, remove major branch elongated shoot competitive branch, side shoot on major branch wipes out top young sprout 25 ~ 35cm, stays outer bud or lateral bud to prune,
3rd year: continue to lure to draw after the full lateral bud rudiment of major branch elongated shoot and raise elongation growth, and keep major branch elongated shoot apical dominance, on major branch, base portion cultivated medium-sized branch group, branch group interval 60 ~ 80cm; Small branch group and unijunction fruit branch are then cultivated in major branch top, small branch group interval 30 ~ 40cm, unijunction fruit branch interval 15 ~ 20cm, pressing down bondage gently to major branch elongated shoot autumn is fixed on flat frame face, carry out retraction to the medium-sized branch group on major branch, small branch group when winter cuts to upgrade, the tree-like and shaping of pear tree single trunk two major branch shape completes substantially.
2. single trunk two major branch pear tree form culture method according to claim 1, it is characterized in that, the structure of described frame is: frame height 1.9m, build with concrete column, side column horizontal spacing is 4m, longitudinal pitch is 6m, corner post, the outer squint of side column and ground angle at 45 °, capital end iron wire is fixed, surrounding and side column bracing wire No. 8 galvanized wires, side column weaves into 4m × 6m grid between bracing wire with No. 10 galvanized wires, each crosspoint fore-set vertical support to bracing wire in the middle of frame, longitudinally three No. 12 galvanized wires are drawn in every bar fore-set band both sides, spacing is 0.4m successively, side column and the distance between corner post and the most contiguous fore-set can be floated according to reality.
3. single trunk two major branch pear tree form culture method according to claim 2, it is characterized in that, described fore-set is the concrete column of 2.0m × 0.06m × 0.06m.
4. the single trunk two major branch pear tree form culture method according to Claims 2 or 3, it is characterized in that, described side column length, width and height specification is the concrete column of 2.7m × 0.1m × 0.1m.
5. the single trunk two major branch pear tree form culture method according to Claims 2 or 3, it is characterized in that, described corner post length, width and height specification is the concrete column of 3.2m × 0.14m × 0.14m.
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