CN103907467A - Cultivation method of good-quality zelkova schneideriana seedlings - Google Patents

Cultivation method of good-quality zelkova schneideriana seedlings Download PDF

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CN103907467A
CN103907467A CN201410156780.9A CN201410156780A CN103907467A CN 103907467 A CN103907467 A CN 103907467A CN 201410156780 A CN201410156780 A CN 201410156780A CN 103907467 A CN103907467 A CN 103907467A
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徐华龙
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Abstract

The invention discloses a cultivation method of good-quality zelkova schneideriana seedlings and belongs to the technical field of plant cultivation. The method comprises the steps of (1) harvesting seeds, (2) treating and storage seeds, (3) selecting a land for tree nursery, (4), preparing and pretreating the land for tree nursery, (5) pretreating the seeds before sowing, (6) sowing the seeds, (7) managing at a seed bud stage, (8) managing at a seedling stage, (9) preventing and treating diseases and insect pests, and (10) outplanting and managing the seedlings. The cultivation method of good-quality zelkova schneideriana seedlings is scientific, systematic, comprehensive, and easy to implement; detailed operation method description is given from the harvesting of seeds to the outplanting and management of the grown seedlings, and therefore, the seeds are high in bud ratio and survival rate and the seedlings cultivated grow well, tidily and robustly with good quality and thus are suitable for high yield and afforestation; besides, high economic benefit is achieved.

Description

A kind of breeding method of beech tree high quality seedling
Technical field
The invention belongs to field of plant growing technology, particularly a kind of breeding method of beech tree high quality seedling.
Background technology
Beech tree (another name blood beech, bulky, the husky Lang Shu of spun gold, nerville beech etc.) has another name called zelkova schneideriana, is the arbor species of Ulmaceae Zelkova, belongs to national secondary and lays special stress on protecting plant.Extensive at distribution in China, to grow slower, material is good, is precious sclerophyll deciduous species, is the fine tree species of viewing and admiring autumn leaves, often plants roadside, wall limit in greenery patches, does isolated planting, group planting configuration and does street tree.Beech tree strong adaptability, wind resistance power is strong, and resistance to flue dust is township afforestation and the good seeds that plant windbreak forests.
The breeding of traditional beech tree is grown seedlings as main take planting seed, because of Zelkova schneideriana seeds less, grow seedlings and need to facilitate fertile sandy loam upper seeding wheel in irrigation and drainage, sowing is to be advisable spring, whole cultivating process is comparatively simple, do not set about from the growth characteristics of beech tree itself, Zelkova schneideriana seeds growth do not carried out to scientific cultivating and managing each time, the germination rate that causes Zelkova schneideriana seeds is only 30~50%, germination rate is low, and through the beech sapling wood of survive after cultivating seedling stage still less, output is lower, is not suitable for batch production expansion numerous; For the attention degree of current afforestation project, the cultivation time of beech tree, quality requirement amount etc. all can not be ignored, and can bring larger economic benefit to the industry of plantation beech tree, and this just requires higher beech tree cultivation technology.
In order to shorten the whole growth cycle of beech tree cultivating seedlings, plantation family can be cultivated again high-quality strong sprout rapidly, the most general breeding method bud ratio is low now, the seedling quality of cultivating is poor, and cultivate nursery stock technical sophistication by cuttage, grafting method, plantation family is difficult grasps, uneconomical, be unfavorable for spread, therefore, how cultivating high-quality seedling strain is the most key problem in whole beech tree culture technique.
Summary of the invention
For the problem of above-mentioned existence, the present invention aims to provide a kind of scientific, system, the comprehensive breeding method of beech tree high quality seedling, makes the Zelkova schneideriana seeds bud ratio cultivated high, and seedling strain growing way is neat, high-quality is healthy and strong, suitable high yield afforestation, and economic benefit is high.
In order to achieve the above object, the technical solution adopted in the present invention is as follows:
A breeding method for beech tree high quality seedling, the method comprises the following steps:
(1) gathering of seed: choose robust growth, dryness between annual October ~ November well and gather as Zelkova schneideriana seeds acquisition target without the good beech tree elite stand in 20 ~ 50 years adult standing forests of damage by disease and insect;
(2) processing of seed and storage: the Zelkova schneideriana seeds of having gathered in step (1) is carried out to impurity elimination processing, naturally dry 2 ~ 3, carry out again selection by winnowing, Zelkova schneideriana seeds water content is controlled between 0 ~ 13%, then pack the Zelkova schneideriana seeds of processing into ventilative receptacle, and be placed on room ventilation dry place storage;
(3) selection of nursery lot: choose traffic convenience, have abundant water resources, supply of electric power puts in place, physical features is smooth, leeward on the sunny side and draining ground threshing is as nursery lot easily, and nursery lot needs that the soil is porous, deep sandy loam or light loam;
(4) whole work and the pretreatment of nursery lot: the nursery lot that step (3) chooses carries out whole ground in the winter time, and in whole ground, apply fertilizer and to disinfecting soil processing;
(5) pretreatment before planting seed: select the seed of storage in the more than 90% described step (2) of purity first to use clear water processing, then in warm water, soak seed 2 ~ 3, finally seed is placed under the condition of 4 ~ 8 ℃ and dries 8 ~ 10, for subsequent use;
(6) planting seed: in step (5), the good seed of pretreatment is chosen in and sows spring, time is that annual mid-February is between early March, adopt the mode of drilling to sow, every mu of 6 ~ 10kg of seeding quantity, sowing line space 25 ~ 35cm, furrow width 8 ~ 12cm, and adopt earthing to cover and cover careless moisturizing;
(7) plant bud period management: seed is put up frame before being unearthed, between frame height 1.7m ~ 2.5m, and according to the variation of temperature covered with sunshade net on frame, throw off and cover grass 40 ~ 50% time when kind of bud is unearthed;
(8) seedling management: comprise water and fertilizer management, intertill and clean tillage and thinning pruning; Wherein, described water and fertilizer management adopts furrow irrigation, draining in the time that center, seedbed is slightly wet, and the seedling growth initial stage is used quick action fertilizer, adopts nitrogenous fertilizer in nursery stock fast-growing phase, early stage and mid-term, and the later stage adopts phosphate fertilizer, potash fertilizer; Described intertill and clean tillage refers to after the abundant lignification of nursery stock, carries out chemical weed control in conjunction with loosening the soil, earthing up; Described thinning is pruned and is referred to weak seedling and the sick seedling of removing the overstocked place of growth, if the bud picking in time of nursery stock top bifurcated;
(9) extermination of disease and insect pest;
(10) outplanting and management: comprise lifting, seedling sorting, nursery stock quarantine and packing, transportation, the lifting time determined according to the planting season.
Further improvement of the present invention is: the gathering to adopt and intercept fruit branch or the collection that naturally comes off of seed in step (1), and set fruit in beech and gathered while turning yellowish-brown by dark green.
Further improvement of the present invention is: in step (4), refer to that farmland changes nursery lot wholely, turn over winter and freeze solarization, next year adopts flat rake that nursery lot rake is carefully raked and made bed by the end of February, if expert vegetable grower ground, turns over after lifting in time, spring maiden work bed, not continuous cropping, seedbed is East and West direction, wide 1 ~ 1.5m, high 25 ~ 30cm; , every mu of nursery lot is executed the pig cow dung 1500 ~ 2000kg that becomes thoroughly decomposed when on whole the ground, the dish cake 180 ~ 220kg that becomes thoroughly decomposed, superphosphate 40 ~ 60kg, the copperas solution that is 1 ~ 3% to the nursery soil spray concentration sterilizing that carries out disinfection.
Further improvement of the present invention is: in step (6), earthing adopts loam or burns soil and covers, thickness 0.4 ~ 0.6cm.
Further improvement of the present invention is: step (8) is if the annual every mu of mu of the annual nursery stock of fertilizing management is executed N:7kg, P 2o 5: 3kg, K 2o:4kg, and adopt a small amount of method repeatedly; If two execute N:15 ~ 20kg, P to annual every mu of perennial nursery stock 2o 5: 6 ~ 8kg, K 2o:8 ~ 10kg, and topdress every year 3 ~ 4 times.
Further improvement of the present invention is: haloxyfop-r-methyl 30 ~ 45ml that every mu of step (8) intertill and clean tillage is 10.8% by concentration is watered 30 ~ 40kg and sprays, loosen the soil and combine with weeding, loosen the soil annual 4 ~ 6 times, ridging choosing is after the rain before drought and after irrigation, fertilizing and weeding operation, in time at bed surface training lid layer fine earth.
Further improvement of the present invention is: in step (8), thinning is pruned in the beginning on the 10th ~ 15 that comes up, and last thinning is trimmed to " final singling ", and final singling retains strain number 10 ~ 15 strains/m 2.
Further improvement of the present invention is: in step (9) between 7 ~ September, what spray concentration was 25% go out No. 3 1500 times of liquid prevention and cure bag moths of young urea, also can in the winter time or manually cut and pluck worm capsule period in early spring; Anti-the eliminating aphis of 2000 ~ 3000 times of liquid of Imidacloprid that 4 ~ May and 9 ~ October, spray concentration was 10%; Spray octyl sulfate or Le Siben control of grubs in dusk of every day or morning.
The invention has the beneficial effects as follows: the inventive method is a kind of scientific, system, comprehensively and be easy to the breeding method of realizing, and methodological science, processing ease, seed bud ratio is high, survival rate is high, and the growing way of cultivating seedling strain is good, neat, high-quality stalwartness, suitable high yield afforestation, economic benefit is high.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is further described.
embodiment mono-:
(1) gathering of seed: choose robust growth, dryness between annual October ~ November well and gather as Zelkova schneideriana seeds acquisition target without the good beech tree elite stand in 20 ~ 50 years adult standing forests of damage by disease and insect, the gathering to adopt of seed intercepts fruit branch, and gathered while turning yellowish-brown by dark green at beech trees fruit;
(2) processing of seed and storage: impurity elimination processing is carried out on above-mentioned Zelkova schneideriana seeds surface of having gathered, then being laid in room ventilation place dries 2 naturally, carry out again selection by winnowing, Zelkova schneideriana seeds water content is controlled between 0 ~ 13%, then pack the Zelkova schneideriana seeds of processing into cloth bag, and hang in room ventilation dry place storage;
(3) selection of nursery lot: choose traffic convenience, have abundant water resources, supply of electric power puts in place, physical features is smooth, leeward on the sunny side and draining farmland is as nursery lot easily, and nursery lot needs that the soil is porous, deep sandy loam;
(4) whole work and the pretreatment of nursery lot: farmland changes nursery lot, carry out in the winter time whole ground, and every mu of nursery lot is executed the pig cow dung 1500kg that becomes thoroughly decomposed in the time of whole ground, the dish cake 180kg that becomes thoroughly decomposed, superphosphate 40kg, next year adopts flat rake that nursery lot rake is carefully raked and made bed by the end of February, seedbed is East and West direction, wide 1.0m, high 25cm, to the copperas solution of nursery soil spray concentration 1 ~ 3% sterilization treatment that carries out disinfection;
(5) pretreatment before planting seed: select the seed of storage in the more than 90% described step (2) of purity first to use clear water processing, seed selection, removes the floating flat grain in seed, then in warm water, soaks seed 2, finally seed is placed under the condition of 4 ℃ and dries 10, for subsequent use;
(6) planting seed: the seed that above-mentioned pretreatment is good is chosen in to be sowed spring, time is annual mid-February, adopt the mode of drilling to sow, every mu of 6kg of seeding quantity, sowing line space 25cm, furrow width 8cm, and adopt loam to cover, thickness 0.4cm, and covered careless moisturizing, cover careless thickness not reveal bed surface as degree;
(7) plant bud period management: seed is put up frame before being unearthed, frame height 1.7m, when seedling strain all sprouts, when noon, temperature exceeded 28 ℃ on frame covered with sunshade net, obscurity is controlled at 60 ~ 70%, needs below to open sunshade net if temperature is down to 28 ℃, ventilate, throw off and cover grass 40 ~ 50% time when kind of bud is unearthed, take off and cover the careless selection of time cloudy day or point carry out for 2 times at dusk, keep bed surface moistening;
(8) seedling management: comprise water and fertilizer management, intertill and clean tillage and thinning pruning; Wherein, described water and fertilizer management adopts furrow irrigation, draining in the time that center, seedbed is slightly wet, and irrigation time is in the morning, at dusk or carry out night, if continuous rainfall, should drain the water away in time, the seedling growth initial stage is used quick action fertilizer, adopts nitrogenous fertilizer in nursery stock fast-growing phase, early stage and mid-term, later stage adopts phosphate fertilizer, potash fertilizer, fertilizing management is annual nursery stock, and annual every mu of mu is executed N:7kg, P 2o 5: 3kg, K 2o:4kg, and adopt a small amount of method repeatedly; Described intertill and clean tillage refers to after the abundant lignification of nursery stock, carry out chemical weed control in conjunction with loosening the soil, earthing up, every mu of the weeding haloxyfop-r-methyl 30ml by concentration 10.8% is watered 30kg and sprays, when spraying, be sure not to be sprayed onto plant and rhizome portion, loosen the soil and combine with weeding, the in the situation that of rainfall or the rear soil compaction of irrigation, carry out, loosen the soil annual 4 times, pine soil depth is take no seedling injury wood root as principle, ridging choosing is after the rain before drought and after irrigation, fertilizing and weeding operation, in time at bed surface training lid layer fine earth; Described thinning is pruned and is referred to weak seedling and the sick seedling of removing the overstocked place of growth, retain strong sprout, if nursery stock top bifurcated bud picking in time, stay the branch that growing way is stronger to decide slightly, coming up, 10 start, last thinning is trimmed to " final singling ", and final singling is carried out in the time that growth of seedling is stablized, and final singling retains strain number 10 strains/m 2;
(9) extermination of disease and insect pest: between annual 7 ~ September, bag moth is prevailing, No. 3 1500 times of liquid controls of young urea that what spray concentration was 25% go out, also can in the winter time or manually cut and pluck worm capsule period in early spring; 4 ~ May and 9 ~ October aphid prevailing, 2000 ~ 3000 times of liquid controls of Imidacloprid that spray concentration is 10%; Grub appears at dusk or morning mostly, should spray octyl sulfate or Le Siben control;
(10) outplanting and management: comprise lifting, seedling sorting, nursery stock quarantine and packing, transportation, the lifting time determined according to the planting season, accomplish with planting with rising,, root system straight and upright according to stem is good and without three features of damage by disease and insect, nursery stock is divided into one-level, secondary and three grades, and wherein; ground footpath≤1.5cm, seedling is high≤and 150cm is one-level nursery stock; Between leading thread 1.2 ~ 1.49cm, it between height of seedling 120 ~ 149cm, is secondary nursery stock; Leading thread <1.2cm, height of seedling <120cm is one-level nursery stock; Nursery stock, going out before garden to carry out the quarantine of damage by disease and insect, is guaranteed the high-quality of nursery stock, high-servival rate; Nursery stock after classification is tied up in time, and numbering, avoids direct wind or Exposure to Sunlight in transportation.
embodiment bis-
Different from embodiment mono-:
(3) selection of nursery lot: nursery lot need the soil is porous, deep, well-drained light loam;
(4) whole work and the pretreatment of nursery lot: every mu of nursery lot is executed the pig cow dung 1800kg that becomes thoroughly decomposed in the time of whole ground, the dish cake 200kg that becomes thoroughly decomposed, superphosphate 50kg, the wide 1.2m in seedbed, high 28cm;
(5) pretreatment before planting seed: seed is placed under the condition of 6 ℃ and dries 9, for subsequent use;
(6) planting seed: the sowing time is annual late Febuary, every mu of 8kg of seeding quantity, sowing line space 30cm, furrow width 10cm, and adopt loam to cover, thickness 0.5cm;
(7) plant bud period management: frame height 2.1m;
(8) seedling management: every mu of the described intertill and clean tillage weeding haloxyfop-r-methyl 40ml by concentration 10.8% is watered 35kg and sprays, it is within 12nd, to start coming up that described thinning is pruned, final singling retains strain number 12 strains/m 2.
embodiment tri-
Different from embodiment mono-:
(1) gathering of seed: seed gather adopt nature come off collect method;
(2) processing of seed and storage: seed is laid in room ventilation place and naturally dries 3;
(3) selection of nursery lot: choose traffic convenience, have abundant water resources, supply of electric power puts in place, physical features is smooth, leeward on the sunny side and draining easily expert vegetable grower as nursery lot;
(4) whole work and the pretreatment of nursery lot: after expert vegetable grower ground lifting, turn in time, spring maiden work bed, not continuous cropping, and in the time turning over whole ground, every mu of nursery lot is executed the pig cow dung 2000kg that becomes thoroughly decomposed, the dish cake 220kg that becomes thoroughly decomposed, superphosphate 60kg, the wide 1.5m in seedbed, high 30cm;
(5) pretreatment before planting seed: seed is soaked seed 3 in warm water, is finally placed on seed under the condition of 8 ℃ and dries 8, for subsequent use;
(6) planting seed: the sowing time is annual early March, every mu of 10kg of seeding quantity, sowing line space 35cm, furrow width 12cm, and adopt baked wheaten cake soil to cover, thickness 0.6cm;
(7) plant bud period management: frame height 2.5m, take off and cover the careless selection of time cloudy day or divide and carry out for 3 times at dusk, keep bed surface moistening;
(8) seedling management: fertilizing management is two to execute N:15 ~ 20kg, P to annual every mu of perennial nursery stock 2o 5: 6 ~ 8kg, K 2o:8 ~ 10kg, and topdress every year 3 ~ 4 times; Every mu of the described intertill and clean tillage haloxyfop-r-methyl 45ml by concentration 10.8% is watered 40kg and sprays, and it is within 15th, to start coming up that described thinning is pruned, and final singling retains strain number 15 strains/m 2.
The foregoing is only the preferred embodiments of the present invention; those of ordinary skill in the art is to be appreciated that above-described embodiment is not as limitation of the invention; every various equivalent transformations that utilize description of the present invention to do, all within protection scope of the present invention.

Claims (8)

1. a breeding method for beech tree high quality seedling, the method comprises the following steps:
(1) gathering of seed: choose robust growth, dryness between annual October ~ November well and gather as Zelkova schneideriana seeds acquisition target without the good beech tree elite stand in 20 ~ 50 years adult standing forests of damage by disease and insect;
(2) processing of seed and storage: the Zelkova schneideriana seeds of having gathered in step (1) is carried out to impurity elimination processing, naturally dry 2 ~ 3, carry out again selection by winnowing, Zelkova schneideriana seeds water content is controlled between 0 ~ 13%, then pack the Zelkova schneideriana seeds of processing into ventilative receptacle, and be placed on room ventilation dry place storage;
(3) selection of nursery lot: choose traffic convenience, have abundant water resources, supply of electric power puts in place, physical features is smooth, leeward on the sunny side and draining ground threshing is as nursery lot easily, and nursery lot needs that the soil is porous, deep sandy loam or light loam;
(4) whole work and the pretreatment of nursery lot: the nursery lot that step (3) chooses carries out whole ground in the winter time, and in whole ground, apply fertilizer and to disinfecting soil processing;
(5) pretreatment before planting seed: select the seed of storage in the more than 90% described step (2) of purity first to use clear water processing, then in warm water, soak seed 2 ~ 3, finally seed is placed under the condition of 4 ~ 8 ℃ and dries 8 ~ 10, for subsequent use;
(6) planting seed: in step (5), the good seed of pretreatment is chosen in and sows spring, time is that annual mid-February is between early March, adopt the mode of drilling to sow, every mu of 6 ~ 10kg of seeding quantity, sowing line space 25 ~ 35cm, furrow width 8 ~ 12cm, and adopt earthing to cover and cover careless moisturizing;
(7) plant bud period management: seed is put up frame before being unearthed, between frame height 1.7m ~ 2.5m, and according to the variation of temperature covered with sunshade net on frame, throw off and cover grass 40 ~ 50% time when kind of bud is unearthed;
(8) seedling management: comprise water and fertilizer management, intertill and clean tillage and thinning pruning; Wherein, described water and fertilizer management adopts furrow irrigation, draining in the time that center, seedbed is slightly wet, and the seedling growth initial stage is used quick action fertilizer, adopts nitrogenous fertilizer in nursery stock fast-growing phase, early stage and mid-term, and the later stage adopts phosphate fertilizer, potash fertilizer; Described intertill and clean tillage refers to after the abundant lignification of nursery stock, carries out chemical weed control in conjunction with loosening the soil, earthing up; Described thinning is pruned and is referred to weak seedling and the sick seedling of removing the overstocked place of growth, if the bud picking in time of nursery stock top bifurcated;
(9) extermination of disease and insect pest;
(10) outplanting and management: comprise lifting, seedling sorting, nursery stock quarantine and packing, transportation, the lifting time determined according to the planting season.
2. the breeding method of beech according to claim 1 tree high quality seedling, is characterized in that: the gathering to adopt and intercept fruit branch or the collection that naturally comes off of seed in step (1), and set fruit in beech and gathered while turning yellowish-brown by dark green.
3. the breeding method of beech tree high quality seedling according to claim 1, it is characterized in that: in step (4), refer to that farmland changes nursery lot wholely, turn over winter and freeze solarization, next year adopts flat rake that nursery lot rake is carefully raked and made bed by the end of February, if expert vegetable grower ground, after lifting, turn in time, spring maiden work bed, not continuous cropping, seedbed is East and West direction, wide 1 ~ 1.5m, high 25 ~ 30cm; , every mu of nursery lot is executed the pig cow dung 1500 ~ 2000kg that becomes thoroughly decomposed when on whole the ground, the dish cake 180 ~ 220kg that becomes thoroughly decomposed, superphosphate 40 ~ 60kg, the copperas solution that is 1 ~ 3% to the nursery soil spray concentration sterilizing that carries out disinfection.
4. the breeding method of beech tree high quality seedling according to claim 1, is characterized in that: in step (6), earthing adopts loam or burns soil and covers, thickness 0.4 ~ 0.6cm.
5. the breeding method of beech tree high quality seedling according to claim 1, is characterized in that: step (8) is if the annual every mu of mu of the annual nursery stock of fertilizing management is executed N:7kg, P 2o 5: 3kg, K 2o:4kg, and adopt a small amount of method repeatedly; If two execute N:15 ~ 20kg, P to annual every mu of perennial nursery stock 2o 5: 6 ~ 8kg, K 2o:8 ~ 10kg, and topdress every year 3 ~ 4 times.
6. the breeding method of beech tree high quality seedling according to claim 1, it is characterized in that: haloxyfop-r-methyl 30 ~ 45ml that every mu of step (8) intertill and clean tillage is 10.8% by concentration is watered 30 ~ 40kg and sprays, loosen the soil and combine with weeding, loosen the soil annual 4 ~ 6 times, ridging choosing is after the rain before drought and after irrigation, fertilizing and weeding operation, in time at bed surface training lid layer fine earth.
7. the breeding method of beech tree high quality seedling according to claim 1, is characterized in that: in step (8), thinning is pruned in the beginning on the 10th ~ 15 that comes up, and last thinning is trimmed to " final singling ", and final singling retains strain number 10 ~ 15 strains/m 2.
8. the breeding method of beech according to claim 1 tree high quality seedling, is characterized in that: in step (9) between 7 ~ September, what spray concentration was 25% go out No. 3 1500 times of liquid prevention and cure bag moths of young urea, also can in the winter time or manually cut and pluck worm capsule period in early spring; Anti-the eliminating aphis of 2000 ~ 3000 times of liquid of Imidacloprid that 4 ~ May and 9 ~ October, spray concentration was 10%; Spray octyl sulfate or Le Siben control of grubs in dusk of every day or morning.
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CN104145703A (en) * 2014-08-29 2014-11-19 张纪林 Seedling culturing method capable of preventing trunk of zelkova schneideriana from bending
CN104620811A (en) * 2015-01-23 2015-05-20 交城县青木农林科技有限公司 Method for cultivating landscaping white bark pines in mountainous area of semi-arid region
CN104620811B (en) * 2015-01-23 2017-05-10 交城县青木农林科技有限公司 Method for cultivating landscaping white bark pines in mountainous area of semi-arid region
CN105191656A (en) * 2015-10-30 2015-12-30 于志伟 Zelkova serrata field cutting propagation method
CN105393868A (en) * 2015-10-30 2016-03-16 于志伟 Ecological seedling method for Zelkovaserrata
CN105393868B (en) * 2015-10-30 2018-06-29 于志伟 A kind of zelkova schneideriana ecological breeding method
CN105850647A (en) * 2016-05-16 2016-08-17 南京红森苗木有限公司 Zelkova serrata clump culture method
CN106804367A (en) * 2017-03-02 2017-06-09 孔翠云 A kind of beech tree high-quality cuttage seeding mating system
CN110800550A (en) * 2019-12-18 2020-02-18 句容市乡土树种研究所 Seedling cultivation method for goldenrain tree
CN110915533A (en) * 2019-12-18 2020-03-27 句容市乡土树种研究所 Cultivation method for improved variety and strong seedling of zelkova serrata
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