CN109496754A - A kind of middle sunshine holocentric, resistance to bolting onion quick breeding and expand numerous method - Google Patents
A kind of middle sunshine holocentric, resistance to bolting onion quick breeding and expand numerous method Download PDFInfo
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- CN109496754A CN109496754A CN201811381182.6A CN201811381182A CN109496754A CN 109496754 A CN109496754 A CN 109496754A CN 201811381182 A CN201811381182 A CN 201811381182A CN 109496754 A CN109496754 A CN 109496754A
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- onion
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G22/00—Cultivation of specific crops or plants not otherwise provided for
- A01G22/35—Bulbs; Alliums, e.g. onions or leeks
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G13/00—Protecting plants
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
- A01H1/00—Processes for modifying genotypes ; Plants characterised by associated natural traits
- A01H1/02—Methods or apparatus for hybridisation; Artificial pollination ; Fertility
Abstract
The invention discloses a kind of middle sunshine holocentric, resistance to bolting onion quick breeding and expand numerous method, the method steps are as follows: sunshade net built in a, greenhouse；B, it in the built-in seedling bed of greenhouse and sows；C, sunshade net is opened after emergence rate reaches 80~95% daily；D, transplant planting when onion seedling age reaches 55~65d；E, it is colonized under caudacoria and secretly fills；F, second year mid or late April, the onion ball plant for staying not bolting and normally expanding；G, the onion of only one split point is selected, harvests and stores naturally mid-May；H, start to plant at the beginning of 10 months；I, isolation implant；J, top dressing and when 15~20% or more bolting covers separation net；K, threshing sowing；L, step (b)~(k) is repeated, purer holocentric, the onion seed of resistance to bolting is received, normally plants nursery third year, the 4th year harvest green onion ball simultaneously selects original seed, carries out fast-propagation.Method breeding time of the invention is short, and operability and repeatability are strong.
Description
Technical field
The present invention relates to onion breeding technical field, specifically it is a kind of it is easy to operate, effect is good, it is new efficiently to study
Kind and the middle sunshine holocentric of the production of hybrid seeds, resistance to bolting onion quick breeding and expand numerous method.
Background technique
Onion (Allium cepaIt L. is) that one of Main Vegetable Species Suitable For Culture, China are the most countries of cultivated area in the world
One of.Onion is by seminal propagation, and a generation crossed over for 3 year, and breeding cycle is long, due to planting technology and day in production
Often there is the problems such as bolting and diplocardia in gas problem, is unfavorable for the deep processing of processing enterprise.Onion bolting influences yield and storage
Property, the onion of diplocardia or more will affect processing.Therefore, sunshine onion holocentric, resistance to bolting kind quick breeding and expansion in raising
Numerous method is particularly important, ensures that the resistance to bolting of onion gone out in the common people and holocentric rate are high, deep to be favored by processing factory, influences each other,
It being capable of sustainable development onion industrial chain.The conventional method single onion breeding period is long, is selecting after the resistance to bolting kind of breeding
It is longer to educate the holocentric rate high kind period, using variety biology characteristic, quickly, largely filters out the onion of resistance to bolting and holocentric
Kind, expands numerous in time, on the basis of excellent variety, more quickly introduces to the market, is a kind of efficiently research new varieties and production of hybrid seeds
New way.
Summary of the invention
In light of the defects in the prior art, the purpose of the invention is to provide it is a kind of it is easy to operate, effect is good, can efficiently grind
Study carefully the numerous method of middle sunshine holocentric, resistance to bolting onion quick breeding and the expansion of new varieties and the production of hybrid seeds.
The purpose of the present invention is what is solved by the following technical programs:
A kind of middle sunshine holocentric, resistance to bolting onion quick breeding and expand numerous method, it is characterised in that: the method steps are as follows:
A, shading rate is set up to 70~80% automatic contraction sunshade net at the top of common plastics greenhouse；
B, in the built-in high ridge zanjon seedling bed of greenhouse and 15~20d sowing in advance, after planting by sunshade net opening and greenhouse both sides
Film roll plays ventilation；
C, after onion emergence rate reaches 80~95%, daily daytime opens 6~8 hours of sunshade net and other time packs up screening
Screened postive；When length to 3~4 tubulose leaves, daily daytime opens 4~5 hours of sunshade net；
D, when onion seedling age reaches 55~65d, transplant planting to the consistent seedling bed of step (b) ridging specification, and among ridge
It is laid with drip irrigation pipe and bedding blue membrane that diameter is 6~8cm；
E, the same day by secretly filling under film, until soil all permeates, sunshade net is opened and greenhouse both sides film roll plays ventilation after field planting,
Until sunshade net is all packed up after onion slow seedling grows young leaves；
F, second year spring, onion turn green, normal fertilizer and water management, extract out flower a kind of sedge onion ball plant all pull out, in 4 months under
Ten days, the onion ball plant for staying not bolting and normally expanding；
G, it in remaining not bolting onion ball, selects the onion of only one split point and remaining is pulled out, mid-May, onion falls
Fu Hou, fine day harvesting, 4~6 one and use hemo lashing onion vacation stem, be suspended on nature in shady and cool, ventilation steelframe booth
Storage；
H, it is harvesting to before being colonized, is clearing up the onion ball for falling, rotting in time, remaining onion ball is pressed into breeding goal by the end of September: no
It with spherical shape, size, color classification and numbers, starts to plant at the beginning of 10 months；
I, according to 1.5~1.8m of line-spacing, 30~40cm of spacing in the rows, ditch depth 15~18cm isolation implant in isolation canopy；
J, second year after onion grows young leaves, imposes dressing of turnning green stage, applies 50~55kg of compound fertilizer per acre, there is 15~20% or more boltings
When start cover separation net；
K, there is cracking to occur to onion seed, from colored a kind of sedge is cut at 20~35cm below inflorescence, place shady and cool clean local after-ripening,
After 5~7d, the threshing sowing after fine day is exposed to the sun；
L, the onion seed received is repeated once step (b)~(k), receives purer holocentric, the onion seed of resistance to bolting, third year
Normal plantation nursery, the 4th year harvest green onion ball simultaneously select original seed, carry out fast-propagation.
The area of plane of automatic contraction sunshade net in the step (a) is greater than the horizontal sectional area of greenhouse and automatic contraction
It is 10~15cm the distance between at the top of sunshade net and greenhouse.
The specification of high ridge zanjon seedling bed in the step (b) are as follows: 20~25cm of ditch depth, 1.2~1.6m of row spacing, sowing
Density is 3~3.5g/m2, ferment after the completion of sowing in the uniform bedding in seedling bed surface with a thickness of the needle mushroom of 0.8~1.0cm
Material, broad irrigation channel and wet surface matrix of being subject to, sunshade net is opened and greenhouse both sides film roll plays ventilation later.
Sunshade net opening time in the step (c) is every morning 10~11 point.
Onion set growth period in the step (c) directly sprays wettable powder carbendazim dry powder 1 using atomizer
~2 times, dosage be 250~300g/ mus.
Onion in the step (d) is colonized 20~22cm of spacing in the rows, 30~35cm of line-spacing.
After frost occurs in winter, greenhouse both sides film is all put down, and only stays the gap 15~20cm for greenhouse in the step (e)
Ventilation.
Not earthing after isolation implant in the step (i), is filled with enough water, under growth root germinates and grows 3~4 leaves in ditch
Afterwards, choose earthing after rotten onions ball.
When onion in the step (j) is bloomed more than 5%, needing to place pupa flower ratio in isolation canopy is 10-20:1's
Fly pupa, and 10-14 point on daytime opens sunshade net to reduce temperature of shed.
Basin is placed to keep having water in canopy in middle part in isolation canopy and surrounding in the step (j).
The present invention has the following advantages compared with prior art:
Method of the invention is basic breeding feature using the earlier bolting characteristic of onion, division points, quickly, concentrates, is a large amount of
The high onion new varieties of resistance to bolting, holocentric rate are filtered out from existing excellent variety；Cooperate cultivation technique: greenhouse wound membrane rain-proof
Earthing after canopy, Furrow sowing germination, rots after onion field planting can be effectively reduced；Can have from measures such as numerous fly supple-mentary pollination
The raising onion knot bank up the roots of seedlings rate and yield of effect；In a short time new varieties are listed, the resistance to bolting of the kind is conducive to improve yield and answer
To extreme weather, increase production farmer, while holocentric kind, it is deep by processing enterprise's demand, cooperate mutual benefit, increases income farmer；
This method can shorten 5 years onion breed breeding periods or more, than the breeding time that conventional method saves 2 times or more, educate for onion
Kind provides new thinking and method, has good operability and repeatability.
Specific embodiment
Below with reference to embodiment, the present invention is further illustrated.
A kind of middle sunshine holocentric, resistance to bolting onion quick breeding and expand numerous method, the method steps are as follows:
A, common plastics greenhouse (such as width 8m, rising 2.5m, long 50m) is established, is established automatically at 10~15cm at the top of from greenhouse
Sunshade net is shunk, the wide 8.5m of sunshade net, long 51m, shading rate is up to 70~80%；
B, in the built-in high ridge zanjon seedling bed of greenhouse, 20~25cm of ditch depth, row spacing 1.5m, the sowing time mention than the normal sowing time
Preceding 15~20d, every square of 3~3.5g of sowing, in the uniform bedding in seedling bed surface with a thickness of 0.8~1.0cm's after the completion of sowing
Needle mushroom fermentation material, broad irrigation channel, wet surface matrix, by the sunshade net opening and greenhouse both sides film roll in step (a)
Play ventilation；
C, onion starts to emerge after 7~10d, and after emergence rate reaches 80~95%, daily daytime opens 6~8 hours of sunshade net
And other time packs up sunshade net；When length to 3~4 tubulose leaves, daily daytime opens 4~5 hours of sunshade net, above-mentioned sunshade
Net opening time is every morning 10~11 point；In onion set growth period, it is more that wettable powder is directly sprayed using atomizer
Bacterium spirit dry powder 1~2 time, dosage are 250~300g/ mus；
D, when onion seedling age reaches 55~65d, transplant planting to the consistent seedling bed of step (b) ridging specification, and among ridge
It is laid with drip irrigation pipe and bedding blue membrane that diameter is 6~8cm, onion is colonized 20~22cm of spacing in the rows, 30~35cm of line-spacing；
E, the same day by secretly filling under film, until soil all permeates, sunshade net is opened and greenhouse both sides film roll plays ventilation after field planting,
Until sunshade net is all packed up after onion slow seedling grows young leaves；After winter, frost occurs, greenhouse both sides film is all put down, stay 15~
The ventilation of the gap 20cm；
F, second year spring, onion turn green, normal fertilizer and water management, and when starting to extract young leaves out, onion ball and false stem expand rapidly, to
When extracting 1 colored a kind of sedge out, i.e., all pull out；Mid or late April, the onion ball plant for staying not bolting and normally expanding；
G, in remaining not bolting onion ball, the onion of only one split point is selected, the ocean of 2 or more merisis points is pulled out
Green onion；Mid-May, after onion lodging, fine day harvesting, 4~6 one and use hemo lashing onion vacation stem, be suspended on it is shady and cool, divulge information
Steelframe booth in store naturally；
H, it is harvesting to before being colonized, is clearing up the onion ball for falling, rotting in time, remaining onion ball is pressed into breeding goal by the end of September: no
It with spherical shape, size, color classification and numbers, starts to plant at the beginning of 10 months；
I, according to the reasonable isolation implant of amount for being collected into bulb, the amount more planted in order to obtain, in isolation canopy (wide 6m, length
According to 1.5~1.8m of line-spacing, 30~40cm of spacing in the rows, ditch depth 15~18cm isolation implant in 50m), not earthing after field planting, in ditch
It is filled with enough water and chooses earthing after rotten onions ball after under growth root germinates and grows 3~4 leaves；
J, second year after onion grows young leaves, imposes dressing of turnning green stage, applies 50~55kg of compound fertilizer per acre, there is 15~20% or more boltings
When start to cover separation net, when 5% or more blooms, successively place Fly pupa in isolation canopy, general 3~5 days, pupa hatching
Out, intermediate and surrounding in canopy is isolated and places basin, keeps having water in isolation canopy；Full-bloom stage increase Fly pupa ratio, pupa with
Colored ratio is 10-20:1, and noon opens sunshade net, temperature of shed is reduced, so that fly continues work of looking for food, pollinate；
K, there is cracking to occur to onion seed, cut colored a kind of sedge from 20~35cm below inflorescence, place shady and cool clean local after-ripening, 5
After~7d, the threshing sowing after fine day is exposed to the sun；
L, the onion seed received is repeated once step (b)~(k), receives purer holocentric, the seed of resistance to bolting, and third year is normal
Nursery, the 4th year harvest green onion ball are planted, and concentrates from color of the leather, spherical shape, big low-angle synthesis and selects original seed, is quickly expanded
It is numerous.
In the above-mentioned methods, the breeding standard of original seed is related with specific onion kind, and different onion kinds is for skin
The breedings standard such as color, spherical shape, size has different requirements.
The breeding of the excellent resistance to bolting of embodiment one, holocentric purple skin onion kind, the ripe phase is Mid-late ripening, spherical shape is spheroidal
With oblate spheroid excellent variety.
A, common plastics greenhouse (such as width 8m, rising 2.5m, long 50m) is established, is established at 10~15cm at the top of from greenhouse
Automatic to shrink sunshade net, the wide 8.5m of sunshade net, long 51m, shading rate is up to 70~80%；
B, in the built-in high ridge zanjon seedling bed of greenhouse, 20~25cm of ditch depth, row spacing 1.5m, the sowing time mention than the normal sowing time
Preceding 15~20d, every square of 3~3.5g of sowing, in the uniform bedding in seedling bed surface with a thickness of 0.8~1.0cm's after the completion of sowing
Needle mushroom fermentation material, broad irrigation channel, wet surface matrix, by the sunshade net opening and greenhouse both sides film roll in step (a)
Play ventilation；
C, onion starts to emerge after 7~10d, and after emergence rate reaches 80~95%, at 10 points at daily noon at 4 points in afternoon is by sunshade
Net is opened and other time packs up, it is long to 3~4 tubulose leaves when, sunshade net opening time is adjusted at 10 points at daily noon under
2 points of noon；In onion set growth period, wettable powder carbendazim dry powder is directly sprayed using atomizer 1~2 time, dosage 250
~300g/ mus；
D, when onion seedling age reaches 55~65d, transplant planting to the consistent seedling bed of step (b) ridging specification, and among ridge
It is laid with drip irrigation pipe and bedding blue membrane that diameter is 6~8cm, onion is colonized 20~22cm of spacing in the rows, 30~35cm of line-spacing；
E, the same day by secretly filling under film, until soil all permeates, sunshade net is opened and greenhouse both sides film roll plays ventilation after field planting,
Until sunshade net is all packed up after onion slow seedling grows young leaves；After winter, frost occurs, greenhouse both sides film is all put down, stay 15~
The ventilation of the gap 20cm；
F, second year spring, onion turn green, normal fertilizer and water management, and when starting to extract young leaves out, onion ball and false stem expand rapidly, to
When extracting 1 colored a kind of sedge out, i.e., all pull out；Mid or late April, the onion ball plant for staying not bolting and normally expanding；
G, in remaining not bolting onion ball, the onion of only one split point is selected, the ocean of 2 or more merisis points is pulled out
Green onion；Mid-May, after onion lodging, fine day harvesting, 4~6 one and use hemo lashing onion vacation stem, be suspended on it is shady and cool, divulge information
Steelframe booth in store naturally；
H, it is harvesting to before being colonized, is clearing up the onion ball for falling, rotting in time, remaining onion ball is pressed into breeding goal by the end of September: no
It with spherical shape, size, color classification and numbers, starts to plant at the beginning of 10 months；
I, according to the reasonable isolation implant of amount for being collected into bulb, the amount more planted in order to obtain, in isolation canopy (wide 6m, length
According to 1.5~1.8m of line-spacing, 30~40cm of spacing in the rows, ditch depth 15~18cm isolation implant in 50m), not earthing after field planting, in ditch
It is filled with enough water and chooses earthing after rotten onions ball after under growth root germinates and grows 3~4 leaves；
J, second year after onion grows young leaves, imposes dressing of turnning green stage, applies 50~55kg of compound fertilizer per acre, there is 15~20% or more boltings
When start to cover separation net, when 5% or more blooms, successively place Fly pupa in isolation canopy, general 3~5 days, pupa hatching
Out, intermediate and surrounding in canopy is isolated and places basin, keeps having water in isolation canopy；Full-bloom stage increase Fly pupa ratio, pupa with
Colored ratio is 10:1, and noon opens sunshade net, temperature of shed is reduced, so that fly continues work of looking for food, pollinate；
K, there is cracking to occur to onion seed, cut colored a kind of sedge from 20~35cm below inflorescence, place shady and cool clean local after-ripening, 5
After~7d, the threshing sowing after fine day is exposed to the sun；
L, the onion seed received is repeated once step (b)~(k), receives purer holocentric, the seed of resistance to bolting, and third year is normal
Plant nursery, the 4th year harvest green onion ball, and concentrate from color of the leather, spherical shape, big low-angle integrate select excellent resistance to bolting, holocentric,
The original seed of purple skin onion kind carries out fast-propagation.
Two yellow onion of the embodiment ripe phase is precocity, Mid-late ripening, spherical shape are spheroidal and oblate spheroid excellent variety.
A, common plastics greenhouse (such as width 8m, rising 2.5m, long 50m) is established, is established at 10~15cm at the top of from greenhouse
Automatic to shrink sunshade net, the wide 8.5m of sunshade net, long 51m, shading rate is up to 70~80%；
B, in the built-in high ridge zanjon seedling bed of greenhouse, 20~25cm of ditch depth, row spacing 1.5m, the sowing time mention than the normal sowing time
Preceding 15~20d, every square of 3~3.5g of sowing, in the uniform bedding in seedling bed surface with a thickness of 0.8~1.0cm's after the completion of sowing
Needle mushroom fermentation material, broad irrigation channel, wet surface matrix, by the sunshade net opening and greenhouse both sides film roll in step (a)
Play ventilation；
C, onion starts to emerge after 7~10d, and after emergence rate reaches 80~95%, at 10 points at daily noon at 4 points in afternoon is by sunshade
Net is opened and other time packs up, it is long to 3~4 tubulose leaves when, sunshade net opening time is adjusted at 10 points at daily noon under
2 points of noon；In onion set growth period, wettable powder carbendazim dry powder is directly sprayed using atomizer 1~2 time, dosage 250
~300g/ mus；
D, when onion seedling age reaches 55~65d, transplant planting to the consistent seedling bed of step (b) ridging specification, and among ridge
It is laid with drip irrigation pipe and bedding blue membrane that diameter is 6~8cm, onion is colonized 20~22cm of spacing in the rows, 30~35cm of line-spacing；
E, the same day by secretly filling under film, until soil all permeates, sunshade net is opened and greenhouse both sides film roll plays ventilation after field planting,
Until sunshade net is all packed up after onion slow seedling grows young leaves；After winter, frost occurs, greenhouse both sides film is all put down, stay 15~
The ventilation of the gap 20cm；
F, second year spring, onion turn green, normal fertilizer and water management, and when starting to extract young leaves out, onion ball and false stem expand rapidly, to
When extracting 1 colored a kind of sedge out, i.e., all pull out；Mid or late April, the onion ball plant for staying not bolting and normally expanding；
G, in remaining not bolting onion ball, the onion of only one split point is selected, the ocean of 2 or more merisis points is pulled out
Green onion；Mid-May, after onion lodging, fine day harvesting, 4~6 one and use hemo lashing onion vacation stem, be suspended on it is shady and cool, divulge information
Steelframe booth in store naturally；
H, it is harvesting to before being colonized, is clearing up the onion ball for falling, rotting in time, remaining onion ball is pressed into breeding goal by the end of September: no
It with spherical shape, size, color classification and numbers, starts to plant at the beginning of 10 months；
I, according to the reasonable isolation implant of amount for being collected into bulb, the amount more planted in order to obtain, in isolation canopy (wide 6m, length
According to 1.5~1.8m of line-spacing, 30~40cm of spacing in the rows, ditch depth 15~18cm isolation implant in 50m), not earthing after field planting, in ditch
It is filled with enough water and chooses earthing after rotten onions ball after under growth root germinates and grows 3~4 leaves；
J, second year after onion grows young leaves, imposes dressing of turnning green stage, applies 50~55kg of compound fertilizer per acre, there is 15~20% or more boltings
When start to cover separation net, when 5% or more blooms, successively place Fly pupa in isolation canopy, general 3~5 days, pupa hatching
Out, intermediate and surrounding in canopy is isolated and places basin, keeps having water in isolation canopy；Full-bloom stage increase Fly pupa ratio, pupa with
Colored ratio is 10:1, and noon opens sunshade net, temperature of shed is reduced, so that fly continues work of looking for food, pollinate；
K, there is cracking to occur to onion seed, cut colored a kind of sedge from 20~35cm below inflorescence, place shady and cool clean local after-ripening, 5
After~7d, the threshing sowing after fine day is exposed to the sun；
L, the onion seed received is repeated once step (b)~(k), receives purer holocentric, the seed of resistance to bolting, and third year is normal
Plant nursery, the 4th year harvest green onion ball, and concentrate from color of the leather, spherical shape, big low-angle integrate select excellent resistance to bolting, holocentric,
The original seed of yellow onion kind carries out fast-propagation.
Method of the invention is basic breeding feature using the earlier bolting characteristic of onion, division points, quickly, concentrates, is big
Amount filters out the high onion new varieties of resistance to bolting, holocentric rate from existing excellent variety；Cooperate cultivation technique: greenhouse wound membrane
Earthing after rain-proof shelter, Furrow sowing germination, rots after onion field planting can be effectively reduced；It is equal from measures such as numerous fly supple-mentary pollination
Onion knot bank up the roots of seedlings rate and yield can effectively be improved；In a short time new varieties are listed, the resistance to bolting of the kind is conducive to improve yield
With reply extreme weather, increase production farmer, while holocentric kind, it is deep by processing enterprise's demand, cooperate mutual benefit, increases farmer
It receives；This method can shorten 5 years onion breed breeding periods or more, be onion than the breeding time that conventional method saves 2 times or more
Breeding provides new thinking and method, has good operability and repeatability.
The above examples only illustrate the technical idea of the present invention, and this does not limit the scope of protection of the present invention, all
According to the technical idea provided by the invention, any changes made on the basis of the technical scheme each falls within the scope of the present invention
Within；The technology that the present invention is not directed to can be realized by the prior art.
Claims (10)
1. a kind of middle sunshine holocentric, resistance to bolting onion quick breeding and expanding numerous method, it is characterised in that: this method step is such as
Under:
A, shading rate is set up to 70~80% automatic contraction sunshade net at the top of common plastics greenhouse；
B, in the built-in high ridge zanjon seedling bed of greenhouse and 15~20d sowing in advance, after planting by sunshade net opening and greenhouse both sides
Film roll plays ventilation；
C, after onion emergence rate reaches 80~95%, daily daytime opens 6~8 hours of sunshade net and other time packs up screening
Screened postive；When length to 3~4 tubulose leaves, daily daytime opens 4~5 hours of sunshade net；
D, when onion seedling age reaches 55~65d, transplant planting to the consistent seedling bed of step (b) ridging specification, and among ridge
It is laid with drip irrigation pipe and bedding blue membrane that diameter is 6~8cm；
E, the same day by secretly filling under film, until soil all permeates, sunshade net is opened and greenhouse both sides film roll plays ventilation after field planting,
Until sunshade net is all packed up after onion slow seedling grows young leaves；
F, second year spring, onion turn green, normal fertilizer and water management, extract out flower a kind of sedge onion ball plant all pull out, in 4 months under
Ten days, the onion ball plant for staying not bolting and normally expanding；
G, it in remaining not bolting onion ball, selects the onion of only one split point and remaining is pulled out, mid-May, onion falls
Fu Hou, fine day harvesting, 4~6 one and use hemo lashing onion vacation stem, be suspended on nature in shady and cool, ventilation steelframe booth
Storage；
H, it is harvesting to before being colonized, is clearing up the onion ball for falling, rotting in time, remaining onion ball is pressed into breeding goal by the end of September: no
It with spherical shape, size, color classification and numbers, starts to plant at the beginning of 10 months；
I, according to 1.5~1.8m of line-spacing, 30~40cm of spacing in the rows, ditch depth 15~18cm isolation implant in isolation canopy；
J, second year after onion grows young leaves, imposes dressing of turnning green stage, applies 50~55kg of compound fertilizer per acre, there is 15~20% or more boltings
When start cover separation net；
K, there is cracking to occur to onion seed, from colored a kind of sedge is cut at 20~35cm below inflorescence, place shady and cool clean local after-ripening,
After 5~7d, the threshing sowing after fine day is exposed to the sun；
L, the onion seed received is repeated once step (b)~(k), receives purer holocentric, the onion seed of resistance to bolting, third year
Normal plantation nursery, the 4th year harvest green onion ball simultaneously select original seed, carry out fast-propagation.
2. middle sunshine holocentric according to claim 1, resistance to bolting onion quick breeding and expanding numerous method, feature exists
In: the area of plane of the automatic contraction sunshade net in the step (a) is greater than the horizontal sectional area of greenhouse and shrinks sunshade automatically
It is 10~15cm the distance between at the top of net and greenhouse.
3. middle sunshine holocentric according to claim 1, resistance to bolting onion quick breeding and expanding numerous method, feature exists
In: the specification of the high ridge zanjon seedling bed in the step (b) are as follows: 20~25cm of ditch depth, 1.2~1.6m of row spacing, thickness of sowing
For 3~3.5g/m2, in the uniform bedding in seedling bed surface with a thickness of the needle mushroom fermentation material of 0.8~1.0cm after the completion of sowing, it
Sunshade net is opened and greenhouse both sides film roll plays ventilation by broad irrigation channel and wet surface matrix of being subject to afterwards.
4. middle sunshine holocentric according to claim 1, resistance to bolting onion quick breeding and expanding numerous method, feature exists
In: the sunshade net opening time in the step (c) is every morning 10~11 point.
5. middle sunshine holocentric according to claim 1 or 4, resistance to bolting onion quick breeding and expanding numerous method, feature
Be: the onion set growth period in the step (c) directly sprays wettable powder carbendazim dry powder 1~2 using atomizer
Secondary, dosage is 250~300g/ mus.
6. middle sunshine holocentric according to claim 1, resistance to bolting onion quick breeding and expanding numerous method, feature exists
In: the onion in the step (d) is colonized 20~22cm of spacing in the rows, 30~35cm of line-spacing.
7. middle sunshine holocentric according to claim 1, resistance to bolting onion quick breeding and expanding numerous method, feature exists
After in: greenhouse in the step (e), frost occurs in winter, greenhouse both sides film is all put down, and the gap 15~20cm is only stayed to divulge information.
8. middle sunshine holocentric according to claim 1, resistance to bolting onion quick breeding and expanding numerous method, feature exists
In: not earthing after the isolation implant in the step (i) is filled with enough water in ditch and chooses after under growth root germinates and grows 3~4 leaves
Earthing after rotten onions ball out.
9. middle sunshine holocentric according to claim 1, resistance to bolting onion quick breeding and expanding numerous method, feature exists
In: when the onion in the step (j) blooms more than 5%, need to place the fly that pupa flower ratio is 10-20:1 in isolation canopy
Pupa, and 10-14 point on daytime opens sunshade net to reduce temperature of shed.
10. middle sunshine holocentric according to claim 9, resistance to bolting onion quick breeding and expanding numerous method, feature exists
In: basin is placed to keep having water in canopy in middle part in isolation canopy and surrounding in the step (j).
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