CJ/T 34-1991 Plant materials for urban greening and gardening - Woody seedlings CJ/T34-91 CJ/T34-1991 Standard download decompression password: www.bzxz.net

Engineering Construction Standard Full Text Information System
Industry Standard of the People's Republic of China
CJ/T34—91
Plant materials for urban green spaceTreeseedlings
1991-08-15 Issued
Ministry of Construction of the People's Republic of China
Engineering Construction Standards Full-text Information System
1992-06-01 Implementation
Engineering Construction Standards Full-text Information System
Subject Content and Scope of Application
Cited Standards
Terms and Terms
Technical Requirements
Testing Methods
6 Inspection Rules
Marking, Digging, Packaging, Transportation, Transplanting or Storage Catalog
Appendix A Main Specifications and Quality Standards for Common Seedlings Products (Supplement) Engineering Construction Standards Full-text Information System
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Engineering Construction Standards Full-text Information System
Industry Standards of the People's Republic of Chinabzxz.net
Plant Materials for Urban Green Space and Garden Green Space Woody Seedlings
Plant materials for urban green spaceTree seedlings
Subject content and scope of application
CJ/T34—91
This standard specifies the technical requirements for specifications, quality, inspection and acceptance of seedlings for open-field planting in urban greening and gardens, as well as basic requirements for marking, seedling digging, packaging, transportation, transplanting or storage. This standard applies to seedlings grown in the open field of nurseries. 2 Reference standards
CJ14 Technical regulations for nursery cultivation in urban garden nurseries GB6000 Main afforestation tree species and seedlings
3 Terms and terms
, Seedling types: According to the natural form of the cultivated seedlings, they are divided into evergreen coniferous trees, deciduous coniferous trees, evergreen broad-leaved trees, deciduous broad-leaved trees, evergreen coniferous shrubs, evergreen broad-leaved shrubs, deciduous broad-leaved shrubs, evergreen vines, deciduous vines, bamboos, palms, etc. Types: clumping type, creeping type, creeping type, single trunk type, etc. 3.2 Clumping seedlings: refers to seedlings with naturally growing tree shapes in a clumping shape. 3.3 Creeping seedlings: refers to seedlings with naturally growing tree shapes in a creeping shape. Vine seedlings: refers to seedlings with naturally growing branches in a creeping shape. 3.4
3.5 Single-trunk seedlings: refers to seedlings with a main trunk after artificial shaping. 3.6 Small trees: refers to trees with a natural tree height of 3 to 8 meters. Medium trees: refers to trees with a natural tree height of 8 to 15 meters. 3.7
3.8 Large trees: refers to trees with a natural tree height of more than 15 meters. 3.9 Trunk diameter: refers to the diameter of the main trunk of the seedling 130 cm above the ground surface. Applicable to large and medium trees. 3.10 Base diameter: refers to the base diameter of the main trunk of the seedling 10 cm above the ground surface. Applicable to small trees and single-trunk shrubs. Approved by the Ministry of Construction of the People's Republic of China on August 15, 1991, and implemented on June 1, 1992. 3.11 Crown diameter: refers to the diameter of the vertical projection of the crown of a tree. 3.12 Canopy diameter: refers to the diameter of the vertical projection of a shrub or bush. 3.13 Tree height: refers to the vertical height of a tree from the ground surface to the top of its normal growth. 3.14 Branch point height: refers to the vertical height of a tree from the lowest branch point of the crown to the ground surface. 3.15 Bush height: refers to the vertical height of a shrub from the ground surface to the top of its normal growth. 3.16 Transplantation times: refers to the number of times a seedling has been transplanted during the entire process of nursery cultivation. 4. Technical requirements 4.1 Basic requirements before seedlings are sent out: 4.1.1 The types, specifications, quantity and quality of seedlings to be sent out shall be investigated, counted and tabulated separately. 4.1.2 Check the Chinese plant name and Latin name of the tree species or cultivated varieties (varieties) of the nursery seedlings to ensure that the name is consistent with the actual situation.
4.1.3 The nursery seedlings should meet the basic quality requirements such as strong growth, lush leaves, complete crown shape, normal color, developed root system, free from pests and diseases, mechanical damage, and frost damage. Refer to the relevant provisions of CJ14. Any seedlings that do not meet the above requirements shall not be nursed.
4.1.4 The seedlings should be transplanted and cultivated before they are sent out. Transplantation and cultivation for seedlings under five years old should be carried out at least once; transplantation and cultivation for seedlings over five years old (including five years old) should be carried out more than twice.
4.1.5 Wild seedlings and domesticated seedlings introduced from other places should be nursed and cultivated in the nursery for one to several years before they are planted, and they can only be sent out after they adapt to the local environment and grow and develop normally.
4.1.6 The nursery seedlings should undergo plant quarantine. The entry and exit of seedling products between provinces, autonomous regions and municipalities directly under the Central Government shall be inspected by the statutory plant quarantine authorities and can only be released after the issuance of a quarantine certificate. Specific quarantine requirements shall be implemented in accordance with relevant national regulations. 4.2 Specifications and quality standards for various types of seedling products: 4.2.1 The main specifications and quality standards for commonly used seedling products of trees are shown in Appendix A Table A1 4.2.1.1 The main quality requirements for tree seedling products: Those with a main axis should have main branches, and the main branches should be evenly distributed, with a trunk diameter of more than 3.0 cm.
4.2.1.2 The quality standards for broad-leaved tree seedling products are based on diameter, tree height, seedling age, branch point height, crown diameter and number of transplants. The quality standards for coniferous tree seedling products are based on tree height, seedling age, crown diameter and number of transplants. 4.2.1.3 The main quality standards for tree seedlings used as street trees are as follows: Broad-leaved trees should have three to five main branches, trunk diameter not less than 4.0 cm, and branch point height not less than 2.5 m. Coniferous trees should have a main axis and main tips. Note: Specific requirements such as branch point height should be separately stipulated in various places according to the different characteristics of tree species and street vehicle traffic volume. 4.2.2 The main specifications and quality standards of commonly used seedlings for shrubs are shown in Appendix A Table A24.2.2.1 The main quality standards for shrub seedlings are based on seedling age, canopy diameter, number of main branches, canopy height or main strip length. 4.2.2.2 The main quality requirements for clumping shrub seedlings are as follows: The bushes are full, the main and side branches are evenly distributed, the number of main branches is not less than five, and the canopy height should have more than three main branches that meet the specified standard requirements. 4.2.2.3 The main quality requirements for creeping shrub seedlings are as follows: There should be more than three main branches that meet the specified standard length. 4.2.2.4 Main quality requirements for creeping shrub seedlings: even branches, more than five main branches, and more than 1.0 cm main branch diameter.
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4.2.2.5 Main quality requirements for single-stem shrub seedlings: with main trunk, even branches, and base diameter of more than 2.0 cm. 4.2.2.6 Main quality requirements for hedge shrub seedlings: full crown, even branches, no bare branches and leaves on the lower part of the trunk, same diameter, and more than two years old.
4.2.3 Main specifications and quality standards for commonly used seedlings of rattan trees are shown in Appendix A Table A3. 4.2.3.1 The main quality standards for rattan seedlings are based on seedling age, number of branches, main vine diameter, and number of transplants. 4.2.3.2 Main quality requirements for small rattan seedlings: the number of branches should be no less than two, and the main vine diameter should be more than 0.3cm. 4.2.3.3 Main quality requirements for large rattan seedlings: the number of branches should be no less than three, and the main vine diameter should be more than 1.0cm. 4.2.4 The main specifications and quality standards for bamboo seedlings are shown in Appendix A Table A4. 4.2.4.1 The main quality standards for bamboo seedlings are based on seedling age, number of bamboo leaf discs, number of bamboo whip buds and number of bamboo whips.
4.2.4.2 The mother bamboo should be two to four years old, with more than two bamboo whip buds, and the bamboo stalk should retain more than three to five leaf discs after cutting. 4.2.4.3 Asexually propagated bamboo seedlings should be two to three years old, and sown bamboo seedlings should be more than three years old. 4.2.4.4 Main quality requirements for scattered bamboo seedlings: large and medium-sized bamboo seedlings have one to two bamboo stalks; small bamboo seedlings have three or more bamboo stalks.
4.2.4.5 Main quality requirements for clumped bamboo seedlings: each bamboo clump has three or more bamboo stalks. 4.2.4.6 Main quality requirements for mixed bamboo seedlings: each bamboo clump has two or more bamboo stalks. 4.2.5 See Appendix A Table A5 for the main specifications and quality standards for special seedlings such as palms. 4.2.5.1 The main quality standards for special palm seedlings are based on tree height, trunk diameter, crown diameter and number of transplants. 5 Testing methods
5.1 Use a vernier caliper to measure the trunk diameter, base diameter and other diameters of seedlings, and the readings should be accurate to 0.1cm. When measuring the tree height, canopy height, branch point height or leaf point height, crown diameter and canopy diameter of seedling products, use a steel tape measure, a tape measure or a wooden ruler, and the reading should be accurate to 1.0 cm.
5.2. When measuring the trunk diameter of seedling products, when the trunk section is deformed, measure the average of the maximum and minimum diameters. When measuring the base diameter of seedling products, when the base is swollen or deformed, measure from the normal position near the top of the base. 5.3. Measure the vertical height between the base surface and the top bud of the normal branch. Exclude the long branches. For special seedlings such as palms, measure the trunk height from the highest leaf point. 5.4. When measuring the canopy height, the average height of more than three main branches in each clump should be taken. 5.5. When measuring the crown diameter and canopy diameter, the average of the maximum and minimum diameters on the vertical projection of the crown (canopy) should be taken, and the ratio of the maximum to the minimum should be less than 1.5.
5.6. When checking the age of seedlings and the number of transplants, the records of seedlings before leaving the nursery should be used as the basis. 5.7.4.1.3. Contents are tested by sensory inspection.
6 Inspection rules
6.1 The inspection location of seedling products is limited to the seedling nursery site. Both the supply and demand parties shall perform the inspection procedures at the same time. The supply party shall provide the demand party with historical archive records of tree species, seedling age, transplantation times, etc. of seedling products. 6.2 Precious seedlings, large-sized seedlings and seedlings with special specifications and quality requirements shall be inspected one by one. Engineering Construction Standard Full-text Information System
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6.3 The quality inspection of seedlings in batches (bundles) shall be carried out by random sampling of 10% of the batch (bundle) quantity. 6.4 The same batch of seedlings shall be uniformly inspected once. 6.5 The allowable range of quality inspection of the same batch of seedling products is 2%; the allowable error of quantity inspection of seedling products in batches is ±0.5%. Refer to the relevant provisions of GB6000 for implementation. See the following table for details: Table for determination of allowable unqualified values ​​for quality inspection
Number of plants in the same batch (plants)
Allowed value (plants)
Table for determination of allowable error values ​​for quantity inspection
Number of plants in the same batch (plants)
Allowed value (plants)
6.6 Determine whether the nursery seedlings are qualified or unqualified based on the inspection results. When there are errors in the inspection work or other aspects do not meet the relevant standards and regulations and re-inspection is required, the re-inspection results shall prevail. 6.7 When it comes to the entry and exit inspection of nursery seedlings, the national port plant quarantine authorities and other relevant authorities should be contacted in advance, and the plant entry and exit inspection procedures should be performed in accordance with relevant technical regulations. 6.8 Seedling products leaving the nursery should be accompanied by a "Seedling Inspection Certificate" in triplicate. The format is shown in Table 1: Table 1
Name of tree species
Propagation method
Date of seedling digging
Transplanting or
Date of storage
Certification issuing unit
Inspector (signature)
Seedling issuing unit
Latin name
Source of seedlings
Date of packaging
Plant quarantine
Person in charge (signature)
7 Marking, seedling digging, packaging, transportation, transplanting or storage 7.1 Marking
7.1.1 Seedling products should be clearly marked when leaving the nursery. Note: The form and color of the mark can be determined by local authorities. Visa date:
Date of seedling dispatch
Year/Month/Day
7.1.2 Contents printed on the signboard: seedling name, Latin scientific name, date of seedling dispatch, batch number, quantity, plant inspection certificate number and dispatching unit.
7.1.3 The signboard shall be hung according to the variety of seedling products and the number of packages. 7.2 Seedling digging
7.2.1 Products such as evergreen seedlings, precious seedlings of fallen trees, extra-large seedlings, seedlings that are difficult to survive, and seedlings with other special quality requirements shall be dug with soil.
7.2.2 The suitable digging period of seedlings shall be carried out according to the suitable transplantation period of different tree species. 7.2.3 When digging up seedlings, if the soil is too dry, water should be poured in three to five days before digging up. 7.2.4 The root range of bare-root seedlings should be six to eight times the base diameter. 7.2.5 The diameter of the soil ball of seedlings with soil balls should be six to eight times the base diameter. The thickness of the soil ball should be more than two-thirds of the diameter of the soil ball.
7.2.6 The roots of seedlings should be pruned immediately after digging up. Roots with a diameter of more than 2.0 cm should be treated with drugs. At the same time, the branches and leaves above the ground should be pruned appropriately.
7.2.7 After digging up bare-root seedlings, they should be protected from sunlight and treated with moisture retention. 7.3 Packaging
7.3.1 Before shipping bare-root seedlings, the branches and leaves should be pruned appropriately, the crowns should be tied, and they should be covered and packaged with moisture retention materials. 7.3.2 Seedlings with soil balls should be packed immediately after digging. The soil should be moist, the soil ball should be standardized, the packaging should be firm, and it should not crack or fall apart.
Note: The packaging materials, specifications and methods can be determined by local governments. 7.4 Transportation
7.4.1 Seedlings must be transported in a timely manner. During transportation, a dedicated person should be responsible for the maintenance of the seedlings to maintain a suitable temperature and humidity to prevent the seedlings from being exposed to the sun, rain and secondary mechanical damage. 7.4.2 Seedlings should be handled with care during loading and unloading. Keep the seedlings intact and free of pollution. The loading and unloading machinery should have safe and hygienic technical measures.
7.4.3 If the volume of the seedlings is too large and the diameter of the soil ball exceeds 70cm, cranes and other machinery can be used for loading and unloading. 7.5 Transplanting or storage
7.5.1 Seedlings should be planted in a timely manner after being transported to the planting site. 7.5.2 After the seedlings are dug up, if they cannot be transported out in time or cannot be planted in time after being transported to the destination, they should be temporarily transplanted or stored.
7.5.3 When the seedlings are dug up in autumn and planted in the following spring, they should be transplanted or stored for wintering. 7.5.4 The specific requirements for transplanting and storage can be stipulated by local governments. Additional notes:
This standard is proposed by the Standard and Norm Research Institute of the Ministry of Construction of the People's Republic of China. This standard is under the jurisdiction of the Ministry of Construction's Urban Construction Research Institute, the Ministry of Construction's urban construction standards and technical management unit. This standard is drafted by the Ministry of Construction's Urban Construction Research Institute (chief editor), Beijing Municipal Bureau of Landscape, Chongqing Municipal Bureau of Landscape, Hangzhou Municipal Bureau of Landscape and Cultural Relics, Guangzhou Municipal Bureau of Landscape, Beijing Forestry University Department of Landscape Architecture, Lanzhou Municipal Bureau of Landscape Architecture and Shenyang Municipal Greening Management Office.
The main drafters of this standard are Chen Mingsong (chief editor), Zeng Qingxin, Ma Yuanjian, Xue Weidong, Xing Shengzhi, etc. Yan, Sun Yusheng, Zhong Yuzhu, Wang Yuhua, Zhou Baoguang, Jiang Ben entrusted the Ministry of Construction Urban Construction Research Institute to interpret this standard. Engineering 6 Construction Standard Full-text Information System
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Appendix A
Main Specifications and Quality Standards for Commonly Used Seedling Products (Supplement)
A. Main specifications and quality standards for commonly used seedling products of arbor species are shown in Table A1Table A1
Araucaria
Podocarpus
White Pine
Longleaf Pine
Massonia Pine
Archaeomagryptiaca
Pendulum cypress
Talc
Araucaria cunninghamii
Abies fabri
Cedrus deodara
Cryptomeria fortunei
Picea asperata
Platycladus orientalis | chinensis cv.Kaizuka
Sabina virginiana
Torreya grandis
Glyptostrobus pensilis
Metasequoiaglyptostroboides
Pseudolarix amabilis
Taxodium ascendens
Taxodiumdistichum
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3.0—3.5
6—10
6—10
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Bauhinia
Ginkgo biloba
Magnolia grandiflora
White orchid
Camellia
Bauhinia purpurea
Ficusretusa
Ficuslacor
Ligutrun lucidum
Magnolia grandiflora
Micheliaalba
Mangifera indica
Cinnamomun camphora
Distylium racemosum
Osmanthus fragrans
Camellia japonica
Photinia serrulata
Erobotrya japonica
Ginkgobiloba
Fraxinus pennsylvainica
Platanus acerifolia
Populus japonica
Acer truncatum
Aesculus chinensis
Sophora japonica
Sapindus mukorossi
Paulownia fortunei
Pterocarya stenoptera
Firmiana simplex
Liriodendron chinensis
Gossampinus malabarica
Salix babylonica
Liquidambar formosana
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Continued Table A1
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Chongyangmu
Uimuspumila
Ulmus parvifolia
Celtis sinensis
Sapium sebiferum
Melia azedarach
Eucommia ulmoides
Quercus acutissima
Zelkova schneideriana
Bischofia polycarpa
Catalpa ocata
Magnolia
Prunus cerasifera
Prunus serrulata
Acerpalmatun
Magnolia chinensis
Crape myrtle
Silk cottonwood
Ulmus truncatula
Pseudoacacia
Robinia pseudoacacia
Malus micromalus
Lagerstroemia speciosa
Punica granatun
Prunus persica f.duplex
Euonymus bungeanus
Uimus pumila cv-pendula
Sophora japonica var.pendulaRobinia hispida
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Continued Table A1
0.4—0.5
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Main specifications and quality standards of commonly used seedlings of shrubs are shown in Table A2 Table A2
Climbing juniper Sabina procumbens
Sand juniper
Cypress
Oleander
Mizilan
Sabina vulgalis
Platycladus orientaliscv.SieboldiChamaecyparispisifera cv.FiliferaLaurus nobilis
Pittsporum indicum
Nerium indicum
Michelia figo
Aglaia odorata
Big-leaf boxwood
Jinshu boxwood
Rhododendron rubrum
Nandina domestica
Nandia paniculata
Fatsia japonica
Euonymus japonicus
Buxus sempervirens
Rhododendron fortunei
Mahonia fortunei
Gardenia jasminoides
Allemanda nerifolia
Nandia domestica
Nandia paniculata
Fatsia japonica
Elexcornuta
Yucca filamentosa
Euonymusjaponicus
High-grafted boxwood
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0.8-1.05-6
0.6—0.8
0.6—0.8
0.3—0.5
0.3—0.5
0.3—0.5
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(times)
1-1.51.5—2
1-1.51.5-25-25-25-25-2
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