CN104521485A - New Ascendens mucronatum rejuvenation and strain renovation method - Google Patents
New Ascendens mucronatum rejuvenation and strain renovation method Download PDFInfo
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- CN104521485A CN104521485A CN201410746199.2A CN201410746199A CN104521485A CN 104521485 A CN104521485 A CN 104521485A CN 201410746199 A CN201410746199 A CN 201410746199A CN 104521485 A CN104521485 A CN 104521485A
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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
- A01G2/00—Vegetative propagation
- A01G2/30—Grafting
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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
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Abstract
The invention discloses a new Ascendens mucronatum rejuvenation and strain renovation method. The new Ascendens mucronatum rejuvenation and strain renovation method includes selecting 1-2 years old thick cypress seedlings, digging and fixedly planting the seedlings to cultivate stocks; before buds germinate in the spring, cutting phylogenetically young 1-2 years old branches on cypress mother plants to cultivate grafting branches; grafting the grafting branches onto the stocks in a cut-grafting mode; reinforcing nurturing management after grafting, which enables the grafted seedlings to provide a large number of high-quality scions in the same year. According to the new Ascendens mucronatum rejuvenation and strain renovation method, young and viable mother plants are used as the stocks, mature and aging clones can be rejuvenated and renovated through grafting, the viability is enhanced, thus the cypress cuttings rooting rate is improved and all fine characteristics of descendant cypress are maintained.
Description
Technical field
The invention belongs to seedling propagation technical field, relate to a kind of method preventing middle mountain China fir breeding merit from degenerating; Be specifically related to the childrenization of a kind of middle mountain China fir, rejuvenation, mountain China fir cutting orchard in construction, prevents the method that middle mountain China fir breeding merit is degenerated fast.
Background technology
Middle mountain China fir is half evergreen high megaphanerophyte, and trunk is tall and straight, tree-shaped is graceful, is the excellent interspecific hybrid of North America swamp cypress, Taxodium mucronatum, Chi Shan 3 seeds, is formed by Institute of Botany's seed selection after experimental study for many years.Have the green phase long, grow fast, water-fast wet, Salt And Alkali Tolerance, wind resistance are strong, damage by disease and insect is few, wide adaptability, growth is rapid, material excellent geometric ratio parent is more excellent characteristic.The large-scale breeding of current middle mountain China fir is mainly through the method for cuttage and seedling culture, middle mountain China fir is after cottage propagation 4 ~ 6 generation, cutting plantation significantly declines, lower than 10%, and quantity of taking root is few, and merit also can be degenerated, some cuttage seeding show as vitality reduction, resistance weakens, cause seedling quality very different, refer to table 1, Fig. 1, and in the first generation, mountain China fir elite stand remains whole merits of male parent and female parent.Therefore by childrenization, rejuvenation, construction can provide the cutting orchard of a large amount of high-quality fringe bar, prevents middle mountain China fir breeding merit from degenerating, seems particularly important.
Cuttage and seedling culture construction cutting orchard, generally by the branch cuttage in summer of mountain China fir or Autumn Cutting in semi-lignified, transplant March in the coming year ~ April and grow about 8 months to container, then transplant planting is to land for growing field crops, grows to about 1m after 1 year.The asexual multiplication ability of nearly all seeds all declines along with ontogeny is aging.Middle mountain China fir first generation elite stand causes cuttage branch vitality to weaken because physiological maturation is aging, thus makes cuttage branch rooting rate degradation.Therefore the method establishment cutting orchard of elite stand branch cutting is directly utilized, grow to 1m need 2 years half time from adopting branch cutting to seedling, build that the garden cycle is long and cutting plantation is extremely low, cause construction cutting orchard efficiency low, a large amount of high-quality fringe bar can not be provided, the breeding of mountain China fir, utilization and extention in obstruction.
Mountain China fir filial generation branch cutting rooting rate in table 1
| Middle mountain China fir filial generation (algebraically) | 1 | 2 | 3 | 4 | 5 | 6 |
| Fringe bar rooting rate (%) | 54.25 | 43.36 | 39.27 | 18.52 | 12.32 | 9.85 |
| Fringe bar is taken root quantity | Many | Many | Medium | Few | Few | Few |
| Transplanting success (%) | 85.32 | 73.46 | 82.75 | 69.82 | 68.51 | 54.18 |
Summary of the invention
The present invention mainly in the China fir reproductive process of middle mountain due to the increase of cutting propagation algebraically and the aging problem such as merit degeneration, cutting plantation reduction caused of the physiological maturation of middle mountain China fir elite stand, childrenization, the rejuvenation technique of a kind of middle mountain China fir are provided, mountain China fir cutting orchard in utilizing grafting to build fast, by the method that whole merits of middle mountain China fir are kept.
Object of the present invention realizes by following technical scheme:
Middle mountain China fir childrenization, rejuvenation strain new method, comprise the following steps:
(1) nursery is in autumn Mo overall site preparation, uses sufficient base manure, selects the sturdy swamp cypress seedling of life in 2 years to dig cave field planting, and strengthens water and fertilizer management, make its restoration ecosystem as early as possible, and the next spring is used for cutting strunk grafting;
(2) spring bud do not sprout adopt cut in more young 1 ~ 2 year of systematic growth age raw branch is as scion bar on the China fir maternal plant of mountain, scion bar is adopted and is cut rear fixed number and be bundled into handle, base portion 100 ~ 250mgL
?1naphthalene acid solution soak 4 ~ 8 hours;
(3) grafting of cut-grafting method is adopted, stay anvil height overhead 3 ~ 5cm, the smooth straight side of stock crust should be selected during grafting to carry out, select in the shade grafting of stock, a cutter of being splayed at 1 ~ 1.5cm place, the back side of bud under scion, reams the xylem of 1/3, long about the 1.5 ~ 3cm in inclined-plane, to splay at the back side on inclined-plane again a little bevel, xylem of slightly pruning, the long 0.8 ~ 1cm of little bevel; Select anvil skin depth, the place that smooth, texture is suitable slightly cut stock tangent plane a little, then in cortex slightly xylem vertically cut 1.5 ~ 2.5cm; Scion is inserted in the otch of stock, the formation layer on the formation layer on the both sides, long inclined-plane of scion and stock otch both sides is aimed at, near;
(4) after scion survives, when sprouting branch and growing to 10 ~ 15cm, select and remain 3 ~ 4 and sprout branch, branch directions is disperseed, crotch angle 30 ° to 60 °, (containing 1 comparatively vertical growth coppice shoot), and all the other are erased from base portion early;
(5) when connect strain grow into 20 ~ 30cm high or see produce strand hang phenomenon time lighten restrictions in time, thoroughly remove lashings after strain waiting healing firmly, strengthen rich water quality management simultaneously, promote arboreal growth;
(6) after when the vertical growth branch selected and remain grows to 60 ~ 80cm, by trunk heading height 50 ~ 70cm place cutting strunk that cup-shaped is crown, promote that it sprouts side shoot again; Sprout branch interior together with what former scion was selected and remain, stay 6 ~ 8, branch altogether, make them be distributed in the different azimuth of trunk, and outwards tiltedly upper stretching, extension, bestow external force if desired, form the blank that the more empty cup-shaped of tree crown central authorities is crown;
(7) when summer adopts bar cuttage, it is pruned again, in the middle part of tree crown to surrounding clip respectively branch long 2/3 ~ 3/4, hat top surface is made to be the slightly recessed cup-like shape in middle part, and wipe out and respectively retain Duan Shangxiang to be preced with center that stretch with sagging secondary side shoot, adopt the crown basic shaping of fringe cup-shaped, namely obtain by childrenization, rejuvenation technique the middle mountain China fir cutting orchard that a large amount of high-quality fringe bar can be provided.Adopt fringe tree through 4 ~ 5 years adopt fringe after need to upgrade tree crown, need field planting stock grafting again after being upgraded by twice tree crown, in childrenization, rejuvenation, mountain China fir builds new cutting orchard.
Swamp cypress seedling preferred swamp cypress seed sowing container seedling.
Middle mountain China fir maternal plant described in step (2) is selected from mountain China fir elite stand in the first generation of Institute of Botany's seed selection.
Step (2) is if when Quantity of the scion is more or the stock of scion collection point and field planting is apart from each other, by the clip sealing wax of scion bar, the temperature of wax liquid controls at 60 ~ 90 DEG C, and is placed in the utensil that moistening moss or wood sawdust are housed and transports, and is positioned over the cool place place of 1 ~ 10 DEG C.
External force described in step (6) is the artificial distributing position sprouting branch with rope rectification.
Beneficial effect of the present invention:
(1) the present invention soaks fringe bar base portion by adopting methyl α-naphthyl acetate, facilitates the division of cell, promotes the healing of grafting wound, improve the survival rate of grafting fringe bar.
(2) the present invention to adopt in the first generation more young 1 ~ 2 year of mountain China fir maternal plant base systems developmental age raw branch as scion, whole merits of mountain China fir strain during branch can keep, avoid the merit of middle mountain China fir to cause trait depression due to the increase of cuttage algebraically, and cuttage survival rate is high.
(3) adopt fringe crown form after grafting and be trimmed to cup-shaped, can control apical dominance, make moisture, nutrient is evenly distributed to hat top each several part branch end, and rudiment branch is evenly distributed on tree crown same plane, the illumination that obtains, rain and dew are comparatively consistent, are conducive to cultivating out the higher high-quality branch of fringe rate; And be crownly trimmed to cup-shaped, compared with natural shape, flat-headed, the branch adopting fringe tree goes out fringe rate and fringe bar quality all the highest (table 2).
The crown individual plant of difference that fringe tree adopted by table 2 produces spike number amount and quality comparation
Note: I level fringe: the band heel of cuttings base diameter > 0.5cm or base segment bar; II level fringe: in cuttings base diameter 0.3 ~ 0.5cm, base segment bar; III level fringe: the middle base segment bar of cuttings base diameter < 0.3cm and thicker slightly bar.
(4), by centering mountain China fir childrenization, rejuvenation, to adopt in the offspring of bar cutting propagation mountain China fir not only rooting rate improve, maintain maternal whole merits simultaneously.
Accompanying drawing explanation
Fig. 1, middle mountain China fir filial generation branch cutting situation of taking root contrasts
In after Fig. 2, embodiment 1 childrenization, rejuvenation, mountain China fir tloig-cutlage is taken root situation
In after Fig. 3, embodiment 2 childrenization, rejuvenation, mountain China fir tloig-cutlage is taken root situation
In after Fig. 4, embodiment 3 childrenization, rejuvenation, mountain China fir tloig-cutlage is taken root situation
Embodiment:
Embodiment 1
Middle mountain China fir childrenization, rejuvenation strain new method, concrete steps are as follows:
In late October, (1) 2009 is in the selection o f production bases draining and irrigate field easily and use sufficient base manure.November 20 by 2000 strain swamp cypress seedlings with seeding row spacing (1m × 1.5m) field planting, and strengthen water and fertilizer management; Swamp cypress seedling is wherein swamp cypress seed sowing container seedling.
(2) adopt on March 12nd, 2010 and cut more young 1 ~ 2 year of middle mountain China fir maternal plant base systems developmental age raw branch, and be cut into long 5 ~ 10cm and with the scion bar 2300 of 2 ~ 3 buds; Scion connects to adopt and cuts rear fixed number and be bundled into handle, base portion 120mgL
?1naa solution soak 6 hours, be then placed in the utensil that moistening wood sawdust is housed and transport, deposit in the cool place place lower than 10 DEG C.
(3) grafting of cut-grafting method is adopted on March 13rd, 2010.Cut off anvil from distance ground 3 ~ 5cm eminence to do, select the smooth straight side of stock crust to carry out.Under scion, splay a cutter in the 1cm place, the back side of bud, reams the xylem of 1/3, long about the 2cm in inclined-plane, a less bevel of splaying at the back side on inclined-plane, some xylems of slightly pruning, the long 0.8 ~ 1cm of little bevel; Select anvil skin depth, the place that smooth, texture is suitable slightly cut stock tangent plane a little, then in cortex slightly xylem vertically cut about 2cm; Scion is inserted in the otch of stock, the formation layer on the formation layer on the both sides, long inclined-plane of scion and stock otch both sides is aimed at, near, if scion is thin, the formation layer aligning that must ensure.
(4) after scion on June 8 in 2010 survives in batches except sprouting, have 1859 strain scion rudiments according to statistics, survival rate 92.95%.When sprouting branch and growing to 10 ~ 15cm, select and remain 3 ~ 4 and sprout branch, branch directions is disperseed, and crotch angle suitable (general 30 ° to 60 °, containing 1 comparatively vertical growth coppice shoot), all the other are erased from base portion.
(5) on July 15th, 2010, when connecing strain, to grow into 20 ~ 30cm high, and docking strain is lightened restrictions on.Thoroughly remove lashings after strain healing firmly waiting, combine simultaneously and open composite fertilizer 100g/ strain of spreading manuer in holes, promote arboreal growth.
(6) in time growing to certain altitude (general 60 ~ 80cm) when the vertical growth branch selected and remain August 10, locate cutting strunk at trunk height about 60cm, promote that it sprouts side shoot again.Sprout branch interior together with what former scion was selected and remain, stay 6 ~ 8, branch altogether, make them be distributed in the different azimuth of trunk, and outwards tiltedly upper stretching, extension, can external force be bestowed if desired, form the blank that the more empty cup-shaped of tree crown central authorities is crown.
When within (7) 2010 years, August 30 adopted bar cuttage, it is pruned again, in the middle part of tree crown to surrounding clip respectively branch long 2/3 ~ 3/4, make hat top surface be the slightly recessed cup-like shape in middle part, and wipe out and respectively retain Duan Shangxiang to be preced with center that stretch with sagging secondary side shoot.Generally by 2 years adopt bar cuttage and pruning, adopt the crown basic shaping of fringe tree cup-shaped.4 ?in 2011 to spot-check statistics May and adopt bar cutting plantation situation in August, 2010 and find (table 3, Fig. 2), after centering mountain China fir childrenization, rejuvenation, adopt mountain China fir not only rooting rate raising in the offspring of bar cutting propagation, quantity of taking root increases, simultaneously mountain China fir cuttage seeding show that transplanting survival rate is high, resistance, green period long, tree-like regular attractive in appearance, grow all merits such as vigorous.
Mountain China fir tloig-cutlage rooting rate and quantity statistics table of taking root in after table 3 childrenization, rejuvenation
| Selective examination seedbed | Fringe bar rooting rate (%) | Fringe bar is taken root quantity | Transplanting success (%) |
| 1 | 76.35 | Many | 89.24 |
| 2 | 72.78 | Many | 82.63 |
| 3 | 63.84 | Many | 86.58 |
Embodiment 2
Middle mountain China fir childrenization, rejuvenation strain new method, concrete steps are as follows:
In late October, (1) 2010 is in the selection o f production bases draining and irrigate field easily and use sufficient base manure.November 20 by the live container seedling of 5500 strain swamp cypress with seeding row spacing (1m × 1.5m) field planting, and strengthen water and fertilizer management.
(2) adopt on February 21st, 2011 and cut more young 1 ~ 2 year of middle mountain China fir maternal plant base systems developmental age raw branch, and be cut into long 5 ~ 10cm and with the scion bar 6000 of 2 ~ 3 buds.Scion connects to adopt and cuts rear fixed number and be bundled into handle, base portion 250mgL
?1naa solution soak 4 hours, be then placed in the utensil that moistening wood sawdust is housed and transport, deposit in the cool place place lower than 10 DEG C.
(3) grafting of cut-grafting method is adopted on February 22nd, 2011.Cut off anvil from distance ground 3 ~ 5cm eminence to do, select the smooth straight side of stock crust to carry out.Under scion, splay a cutter in the 1cm place, the back side of bud, reams the xylem of 1/3, long about the 2cm in inclined-plane, a less bevel of splaying at the back side on inclined-plane, some xylems of slightly pruning, the long 0.8 ~ 1cm of little bevel; Select anvil skin depth, the place that smooth, texture is suitable slightly cut stock tangent plane a little, then in cortex slightly xylem vertically cut about 2cm; Scion is inserted in the otch of stock, the formation layer on the formation layer on the both sides, long inclined-plane of scion and stock otch both sides is aimed at, near, if scion is thin, the formation layer aligning that must ensure.
(4) after scion on May 6 in 2011 survives in batches except sprouting, have 5012 strain scion rudiments according to statistics, survival rate 91.12%.When sprouting branch and growing to 10 ~ 15cm, select and remain 3 ~ 4 and sprout branch, branch directions is disperseed, and crotch angle suitable (general 30 ° to 60 °, containing 1 comparatively vertical growth coppice shoot), all the other are erased from base portion.
On May 22nd, (5) 2011, docking strain is lightened restrictions on, and thoroughly removes lashings, combine simultaneously and open composite fertilizer 100g/ strain of spreading manuer in holes, promote arboreal growth after strain healing firmly waiting.
(6) in time growing to certain altitude (general 60 ~ 80cm) when the vertical growth branch selected and remain June 25, locate cutting strunk at trunk height about 60cm, promote that it sprouts side shoot again.Sprout branch interior together with what former scion was selected and remain, stay 6 ~ 8, branch altogether, make them be distributed in the different azimuth of trunk, and outwards tiltedly upper stretching, extension, can external force be bestowed if desired, form the blank that the more empty cup-shaped of tree crown central authorities is crown.
When within (7) 2011 years, July 18 adopted bar cuttage, it is pruned again, in the middle part of tree crown to surrounding clip respectively branch long 2/3 ~ 3/4, make hat top surface be the slightly recessed cup-like shape in middle part, and wipe out and respectively retain Duan Shangxiang to be preced with center that stretch with sagging secondary side shoot.Generally by 2 years adopt bar cuttage and pruning, adopt the crown basic shaping of fringe tree cup-shaped, namely the middle mountain China fir cutting orchard of a large amount of high-quality fringe bar can be provided by childrenization, rejuvenation technique acquisition.4 ?in 2011 to spot-check statistics May and adopt bar cutting plantation situation in August, 2010 and find (table 4, Fig. 3), after centering mountain China fir childrenization, rejuvenation, adopt mountain China fir not only rooting rate raising in the offspring of bar cutting propagation, quantity of taking root increases, simultaneously mountain China fir cuttage seeding show that transplanting survival rate is high, resistance, green period long, tree-like regular attractive in appearance, grow all merits such as vigorous.
Mountain China fir tloig-cutlage rooting rate and quantity statistics table of taking root in after table 4 childrenization, rejuvenation
| Selective examination seedbed | Fringe bar rooting rate (%) | Fringe bar is taken root quantity | Transplanting success (%) |
| 1 | 78.34 | Many | 84.68 |
| 2 | 65.28 | Many | 90.57 |
| 3 | 72.62 | Many | 85.95 |
Embodiment 3
Middle mountain China fir childrenization, rejuvenation strain new method, concrete steps are as follows:
In late October, (1) 2013 is in the selection o f production bases draining and irrigate field easily and use sufficient base manure.November 20 by 6000 strain swamp cypress seedlings with seeding row spacing (1m × 1.5m) field planting, and strengthen water and fertilizer management.
(2) adopt on March 2nd, 2014 and cut more young 1 ~ 2 year of middle mountain China fir maternal plant base systems developmental age raw branch, and be cut into long 5 ~ 10cm and with the scion bar 6500 of 2 ~ 3 buds.Scion connects to adopt and cuts rear fixed number and be bundled into handle, base portion 180mgL
?1naa solution soak 5 hours, be then placed in the utensil that moistening wood sawdust is housed and transport, deposit in the cool place place lower than 10 DEG C.
(3) grafting of cut-grafting method is adopted on March 3rd, 2014.Cut off anvil from distance ground 3 ~ 5cm eminence to do, select the smooth straight side of stock crust to carry out.Under scion, splay a cutter in the 1cm place, the back side of bud, reams the xylem of 1/3, long about the 2cm in inclined-plane, a less bevel of splaying at the back side on inclined-plane, some xylems of slightly pruning, the long 0.8 ~ 1cm of little bevel; Select anvil skin depth, the place that smooth, texture is suitable slightly cut stock tangent plane a little, then in cortex slightly xylem vertically cut about 2cm; Scion is inserted in the otch of stock, the formation layer on the formation layer on the both sides, long inclined-plane of scion and stock otch both sides is aimed at, near, if scion is thin, the formation layer aligning that must ensure.
(4) after scion on May 15 in 2014 survives in batches except sprouting, have 5633 strain scion rudiments according to statistics, survival rate 93.88%.When sprouting branch and growing to 10 ~ 15cm, select and remain 3 ~ 4 and sprout branch, branch directions is disperseed, and crotch angle suitable (general 30 ° to 60 °, containing 1 comparatively vertical growth coppice shoot), all the other are erased from base portion.
On June 2nd, (5) 2014, docking strain is lightened restrictions on, and thoroughly removes lashings, combine simultaneously and open composite fertilizer 100g/ strain of spreading manuer in holes, promote arboreal growth after strain healing firmly waiting.
(6) in time growing to certain altitude (general 60 ~ 80cm) when the vertical growth branch selected and remain July 2, locate cutting strunk at trunk height about 60cm, promote that it sprouts side shoot again.Sprout branch interior together with what former scion was selected and remain, stay 6 ~ 8, branch altogether, make them be distributed in the different azimuth of trunk, and outwards tiltedly upper stretching, extension, can external force be bestowed if desired, form the blank that the more empty cup-shaped of tree crown central authorities is crown.
When within (7) 2014 years, July 23 adopted bar cuttage, it is pruned again, in the middle part of tree crown to surrounding clip respectively branch long 2/3 ~ 3/4, make hat top surface be the slightly recessed cup-like shape in middle part, and wipe out and respectively retain Duan Shangxiang to be preced with center that stretch with sagging secondary side shoot.Generally by 2 years adopt bar cuttage and pruning, adopt the crown basic shaping of fringe tree cup-shaped, namely the middle mountain China fir cutting orchard of a large amount of high-quality fringe bar can be provided by childrenization, rejuvenation technique acquisition.4 ?in 2011 to spot-check statistics May and adopt bar cutting plantation situation in August, 2010 and find (table 5, Fig. 4), after centering mountain China fir childrenization, rejuvenation, adopt mountain China fir not only rooting rate raising in the offspring of bar cutting propagation, quantity of taking root increases, simultaneously mountain China fir cuttage seeding show that transplanting survival rate is high, resistance, green period long, tree-like regular attractive in appearance, grow all merits such as vigorous.
Mountain China fir tloig-cutlage rooting rate and quantity statistics table of taking root in after table 5 childrenization, rejuvenation
| Selective examination seedbed | Fringe bar rooting rate (%) | Fringe bar is taken root quantity | Transplanting success (%) |
| 1 | 68.75 | Many | 91.26 |
| 2 | 72.53 | Many | 86.89 |
| 3 | 64.48 | Many | 88.54 |
Claims (5)
1. mountain China fir childrenization, rejuvenation strain new method in, is characterized in that comprising the following steps:
(1) nursery is in autumn Mo overall site preparation, uses sufficient base manure, selects the sturdy swamp cypress seedling of life in 2 years to dig cave field planting, and strengthens water and fertilizer management, make its restoration ecosystem as early as possible, and the next spring is used for cutting strunk grafting;
(2) spring bud do not sprout adopt cut in more young 1 ~ 2 year of systematic growth age raw branch is as scion bar on the China fir maternal plant of mountain, scion bar is adopted and is cut rear fixed number and be bundled into handle, base portion 100 ~ 250mgL
?1naphthalene acid solution soak 4 ~ 8 hours;
(3) grafting of cut-grafting method is adopted, stay anvil height overhead 3 ~ 5cm, the smooth straight side of stock crust is selected to carry out during grafting, select in the shade grafting of stock, a cutter of being splayed at 1 ~ 1.5cm place, the back side of bud under scion, reams the xylem of 1/3, long 1.5 ~ the 3cm in inclined-plane, to splay at the back side on inclined-plane again a little bevel, xylem of slightly pruning, the long 0.8 ~ 1cm of little bevel; Select anvil skin depth, the place that smooth, texture is suitable slightly cut stock tangent plane a little, then in cortex slightly xylem vertically cut 1.5 ~ 2.5cm; Scion is inserted in the otch of stock, the formation layer on the formation layer on the both sides, long inclined-plane of scion and stock otch both sides is aimed at, near;
(4) after scion survives, when sprouting branch and growing to 10 ~ 15cm, 3 ~ 4 coppice shoots of selecting and remain, branch directions is disperseed, crotch angle 30 ° to 60 °, and containing 1 comparatively vertical growth coppice shoot, all the other are erased from base portion early;
(5) when connect strain grow into 20 ~ 30cm high or see produce strand hang phenomenon time lighten restrictions in time, thoroughly remove lashings after strain waiting healing firmly, strengthen rich water quality management simultaneously, promote arboreal growth;
(6) after when the vertical growth branch selected and remain grows to 60 ~ 80cm, by trunk heading height 50 ~ 70cm place cutting strunk that cup-shaped is crown, promote that it sprouts side shoot again; Sprout branch interior together with what former scion was selected and remain, stay 6 ~ 8, branch altogether, make them be distributed in the different azimuth of trunk, and outwards tiltedly upper stretching, extension, bestow external force if desired, form the blank that the more empty cup-shaped of tree crown central authorities is crown;
(7) when summer adopts bar cuttage, it is pruned again, in the middle part of tree crown to surrounding clip respectively branch long 2/3 ~ 3/4, hat top surface is made to be the slightly recessed cup-like shape in middle part, and wipe out and respectively retain Duan Shangxiang to be preced with center that stretch with sagging secondary side shoot, the crown basic shaping of cup-shaped, obtains the middle mountain China fir cutting orchard that can provide a large amount of high-quality fringe bar.
2. the method according to patent requirements 1, is characterized in that swamp cypress seedling is swamp cypress seed sowing container seedling.
3. the method according to patent requirements 1, is characterized in that the middle mountain China fir maternal plant described in step (2) is selected from mountain China fir elite stand in the first generation of Institute of Botany's seed selection.
4. the method according to patent requirements 1, it is characterized in that step (2) if when Quantity of the scion is more or the stock of scion collection point and field planting is apart from each other, by the clip sealing wax of scion bar, the temperature of wax liquid controls at 60 ~ 90 DEG C, and be placed in the utensil that moistening moss or wood sawdust are housed and transport, be positioned over the cool place place of 1 ~ 10 DEG C.
5. the method for mountain China fir according to patent requirements 1, is characterized in that the external force described in step (6) is the artificial distributing position sprouting branch with rope rectification.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105494021A (en) * | 2016-01-18 | 2016-04-20 | 山东省林业科学研究院 | Method for training and pruning North American crabapple seedlings |
| CN108738967A (en) * | 2018-05-09 | 2018-11-06 | 福建省洋口国有林场 | A kind of China fir band hat buries the rejuvenation method of dry method cutting orchard |
| CN117016213A (en) * | 2023-08-11 | 2023-11-10 | 江苏省中国科学院植物研究所 | Method for rejuvenating Chinese fir 302 cutting shoots and application |
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| CN108738967B (en) * | 2018-05-09 | 2020-06-23 | 福建省洋口国有林场 | Rejuvenation method of fir tree dry-method cutting orchard with crown |
| CN117016213A (en) * | 2023-08-11 | 2023-11-10 | 江苏省中国科学院植物研究所 | Method for rejuvenating Chinese fir 302 cutting shoots and application |
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