LY/T 3099-2019Main tropical orchid plant cultivation techniques and quality grade (English PDF)
主要商品热带兰花种苗栽培技术与质量等级
This is a limited preview
Buy now to download the full PDF (9 pages)
Need quotation for your management?
Get a formal quotation for LY/T 3099-2019 in 30 minutes.
Issued by
State Forestry and Grassland Administration
Level / Type
National · Recommended
Issue date
October 23, 2019
Implementation date
April 1, 2020
Scope
LY/T 3099-2019 is the English-translated version of 主要商品热带兰花种苗栽培技术与质量等级.
LY/T 3099-2019 — This standard specifies Phalaenopsis, Cattleya, Oncidium, Dendrobium Terms and definitions of tropical orchid seeds and seedlings, cultivation management methods, quality requirements, inspection methods, signs, packaging, storage and transportation, etc. Content.
This standard applies to the cultivation management and quality assessment of tropical orchid seedlings such as Phalaenopsis, Cattleya, Oncidium, and Dendrobium.
Found what you need?
Document preview — LY/T 3099-2019
National Standard of the People's Republic of China
- ICS
- 65.020
- Classification
- B 62
Issued by: State Forestry and Grassland Administration
Contents
- Foreword
- 1 Scope
- 2 Terms and definitions
- 2.1 Spring Dendrobium Nobile type Dendrobium
- 2.2 Autumn Dendrobium Phalaenopsis type Dendrobium
- 2.3 Plant height
- 2.4 Leaf length
- 2.5 Leaf width
- 2.6 Pseudobulb
- 2.7 Stem diameter
- 2.8 Mericlone young plant
- 2.9 Primary young plant
- 2.10 Medium young plant
- 2.11 Large plant
- 2.12 Small plant type
- 2.13 Medium plant type
- 2.14 Large plant type
- 3 Production environmental conditions
- 4 Preliminary preparation
- 4.1 Facility inspection and disinfection
- 4.2 Treatment of cultivation substrates and selection of containers
- 4.3 Water treatment and fertilizer selection
- 5 Seedling quality requirements
- 5.1 Classification principle
- 5.2 Shape Grade
- 6 Seedling management and quality level
- 6.1 Bottle Seedling Management and Quality Grade
- 6.2 Young Seedling Management and Quality Grade
- 6.3 Middle seedling management and quality level
- 6.4 Management and quality level of large seedlings
- 7 Seedling quality inspection methods
- 8 Seedling quality inspection rules
- 8.1 Group approval
- 8.2 Sampling
- 8.4 Decision rules
- 8.5 Marking, packaging, storage and transportation
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard was proposed and managed by the National Flower Standardization Technical Committee.
This standard was drafted. Institute of Forestry, Chinese Academy of Forestry, Institute of Subtropical Forestry, Chinese Academy of Forestry, Hainan Baiying Orchid Industry Development Co., Ltd., Crop Research Institute of Fujian Academy of Agricultural Sciences, Canaan Orchid Farmers Professional Cooperative in Dongfang City.
1 Scope
This standard specifies Phalaenopsis, Cattleya, Oncidium, Dendrobium Terms and definitions of tropical orchid seeds and seedlings, cultivation management methods, quality requirements, inspection methods, signs, packaging, storage and transportation, etc.
Content.
This standard applies to the cultivation management and quality assessment of tropical orchid seedlings such as Phalaenopsis, Cattleya, Oncidium, and Dendrobium.
2 Terms and definitions
2.1 Spring Dendrobium Nobile type Dendrobium
The species of Dendrobium extracted from the leaf axillary inflorescence. The original parents are mainly from the Section Dendrobium group. Natural Flowering is generally in spring.
2.2 Autumn Dendrobium Phalaenopsis type Dendrobium
Species of Dendrobium orchids extracted from the top of the plant. The original parents are mainly from Section Phalaenanthe and Antelope Dendrobium group (Section Spatulata) and the hybrid of these two groups, the natural flowering period is generally in autumn.
2.3 Plant height
The vertical distance from the root and neck of the plant to the top.
2.4 Leaf length
Refers to the linear distance from the base of the longest leaf to the tip of the plant.
2.5 Leaf width
Refers to the maximum width of the longest leaves on the plant.
2.6 Pseudobulb
Refers to the abnormal stem of Orchidaceae.
2.7 Stem diameter
The diameter of the thickest part of the largest pseudobulb of Cattleya and Oncidium. When the pseudobulb of Oncidium is covered with a leaf sheath, the measurement is performed together with the leaf sheath.
The thickest diameter of Dendrobium pseudobulb.
2.8 Mericlone young plant
Healthy tropical orchid plants obtained through tissue culture can be removed from the culture bottle and planted in the cultivation facility.
2.9 Primary young plant
After the bottle seedlings are planted in a transparent nutrition bowl of f4.0cm to f5.5cm, the seedlings during the next pot change. Phalaenopsis and Dendrobium the seedling stage of Cymbidium is 4-6 months, the seedling stage of Oncidium is 6-9 months, and the seedling stage of Cattleya is 12-18 months.
2.10 Medium young plant
Phalaenopsis seedlings grow after 3.5 to 4 months, Dendrobium seedlings grow after 4 to 6 months, and Oncidium seedlings grow after 6 to 9 months.
After 12 to 18 months of growth of Cattleya seedlings, they were planted in transparent nutrition bowls of f6.5 cm to 8.5 cm in changing pots, and the seedlings during the next pot changing period.
2.11 Large plant
After 2.5 to 3.5 months of growth of Phalaenopsis middle seedlings, after 4 to 6 months of growth of Dendrobium middle seedlings, of Oncidium medium seedlings after 6 to 9 months, After growing for 12 to 24 months, the Cattleya medium seedlings were planted in transparent nutrition bowls of f10.0 cm to f12.5 cm, which had flowering ability.
2.12 Small plant type
Types of Phalaenopsis large seedlings with leaf lengths less than 15.0 cm, Types of Cattleya and Spring Dendrobium large seedlings with plant heights less than 30.0 cm, Oncidium, Autumn Dendrobium seedlings are less than 25.0 cm in height.
2.13 Medium plant type
Types of Phalaenopsis large seedlings with leaf lengths between 15.0 cm and 19.0 cm, and Cattleya large seedlings with plant heights between 30.0 cm and 40.0 cm.
Oncidium large seedlings with a plant height between 25.0 cm and 40.0 cm, autumn Dendrobium large seedlings with a plant height between 25.0 cm and 50.0 cm, spring the type of Dendrobium seedlings with plant height between 30.0 cm and 40.0 cm.
2.14 Large plant type
Phalaenopsis seedlings with leaf length greater than 19.0 cm, Cattleya seedlings with plant height greater than 40.0 cm, and Dendrobium seedlings with plant height greater than 50.0 cm type, oncidium and spring Dendrobium seedlings with a plant height greater than 40.0 cm.
3 Production environmental conditions
It has good light transmission, temperature and humidity controllability, air circulation, and insect-proof facilities; the light intensity is controlled at 8000 ~ 30,000 lux (144 ~ 540 µmol · m-2s-1); the temperature is controlled between 18 ° C and 32 ° C; the relative humidity of the air is controlled between 60% and 90%.
4 Preliminary preparation
4.1 Facility inspection and disinfection
Check the cultivation facilities and equipment to ensure that the equipment runs normally. Perform disinfection.
4.2 Treatment of cultivation substrates and selection of containers
4.2.1 Water Moss
High-quality water moss with plant body length, stoutness, no impurities, and whitish color is selected. Soak and soften with water before use, then hot water at 85 °C Soak (or steam sterilize) for 30 minutes, and then dry after cooling, so as not to drip water when squeezing the moss.
4.2.2 Cultivation container
According to different growth stages of seedlings, f4.0 cm, f5.5 cm, f6.5 cm, f8.5 cm, f10.0 cm, f12.5 cm the transparent nutrition bowl serves as a cultivation container.
4.3 Water treatment and fertilizer selection
4.3.1 Water quality
Water quality requires EC < 0.3 ms · cm-1, with Na and Cl- content below 1 mmol·L-1, HCO3- content below 0.5 mmol·L-1, pH the value is 5.5 to 6.5.
4.3.2 Fertilizer
Use N-P2O5-K2O in the proportion of 20-20-20, 10-30-20, 30-10-10, 25-10-20, 15-20-25 and other formula fertilizers.
5 Seedling quality requirements
5.1 Classification principle
5.1.1 The quality of commercial seedlings is divided into first and second grades.
5.1.2 Shape and quality grade. According to the overall effect of seedlings, diseases and insect pests, and defects, the three grades are graded.
5.1.3 Specification grade. Graded according to the specified leaf number, leaf length, leaf width, stem thickness, root number, root length and other indicators.
5.2 Shape Grade
See Table 1 for quality grade indicators.
Table 1 Quality grade index
project
Shape level
Level 1 Level 2
overall
effect
The plant is robust, the shape of the plant is even, and the leaf morphology has variety characteristics.
distortion. The leaves are thick and shiny, and the heart leaves grow normally. Root system Well-developed, evenly distributed, complete apex.
The plant is robust, the shape of the plant is even, and the morphology of the leaf has variety characteristics.
No distortion. The leaves are thick and shiny, and the heart leaves grow normally.
The root system is well-developed, evenly distributed, the root tip is intact but brownish black.
Pest
No pests and diseases Defect no insect eye spots, drug damage, frost damage, burns and mechanical damage. Mild worm eye spots or medicinal or frost damage or burns or mechanical damage Hurt etc.
6 Seedling management and quality level
6.1 Bottle Seedling Management and Quality Grade
6.1.1 Out of the bottle
Transfer the tissue culture bottle with the seedlings to the domestication facility for 10 to 15 days, and then take out the seedlings from the bottle. Rinse the roots with water to cultivate them.
Base, then use 1 000 times of carbendazim or chlorothalonil or methyl tobzine, soak it for 10 s, remove it, and disperse excess water in a cool and ventilated place.
6.1.2 Quality grade
See Table 2 for specifications of bottle seedlings.
Table 2 Specifications of bottle seedlings
project
Butterfly Orchid Cattleya Oncidium Autumn Dendrobium Orchid Spring Dendrobium Orchid Level one level two level two level one level two level one level two level one level two Number of leaves/(piece) 3 leaves 1 heart or more >=4 >=3 >=4 >=3 >=4 >=3 Leaf length/(cm) >=3.5 >=2.5 >=5.5 >=4.5 >=5.0 >=3.0 >=4.5 >=3.5 >=4.5 >=3.5 Leaf width/(cm) >=1.2 >=1.0 >=3.5 >=3.0 >=1.5 >=1.0 >=1.5 >=1.0 Number of pieces/(strip) > 3 2 ~ 3 > 3 2 ~ 3 >=3 >=3 >=3 Stem thickness (cm) >=0.5 >=0.3 >=0.2 >=0.5 >=0.5 Plant height (cm) >=5.0 >=7.0 >=5.0 >=5.0 >=4.0 >=5.0 >=4.0 Root length (cm) 1.0 ~ 3.0 1.0 ~ 5.0 0.7 ~ 4.0 1.0 ~ 5.0 1.0 ~ 5.0
6.2 Young Seedling Management and Quality Grade
6.2.1 Planting
The bottle seedlings are classified after they are out of the bottle. A transparent nutrition bowl of f4.0cm to f5.5cm is selected, and seedlings of the same level are planted in the same tray. Species when seedlings, first loosen the water moss, and then use a handful of water moss to pad the root of the Phalaenopsis seedlings.
Tighten and loosen, tight inside and loose, high in the middle and low in the middle. The orchid seedlings are planted vertically in the middle of the soft bowl. Be careful not to cover the base buds or the roots of the root system are all exposed. After planting, the water moss should be about 1.0 cm below the edge of the cultivation container or below the waterline of the basin mouth of the cultivation container.
6.2.2 Environmental control
The light intensity is controlled within 6000 ~ 8000 lux (108 ~ 144 µmol · m-2s-1) within 30 days after planting. After 30 days, the light intensity is gradually increased to 8000 ~ 10000 lux (144 ~ 180 µmol · m-2s-1), relative humidity of air is 60% ~ 85%, temperature is 25 ° C ~ 28 ° C.
6.2.3 Fertilizer and water management
No watering within 5 to 7 days after transplanting. After 7 days of transplanting, the water moss can be moistened properly and watered properly. 15 days after transplanting, combined with water spray plus 3000 times N-P2O5-K2O ratio is 30-10-10 fertilizer liquid for topdressing spraying once, and irrigated 4000 times N-P2O5-K2O ratio is 10-30-20 fertilizer liquid root. After 20 to 25 days of transplanting, 20-20-20 times of fertilizer solution is irrigated every 7 to 10 days. During seedling management, the EC value of the substrate is controlled at 0.6 ~ 0.8 ms · cm-1.
6.2.4 Pest and disease control
After transplanting, spray with carbendazim or chlorothalonil or methyltobzine 1000 times for sterilization once. Spray carbendazim or dixon every 5 d for 15 d 1000 times solution to prevent cataplexy. During the production and control of pests and diseases, a combination of sticky paper and regular spraying is adopted.
6.2.5 Quality grade
6.2.5.1 The specifications of the small plant types and seedlings are shown in Table 3.
6.2.5.2 The specifications and indexes of medium plant type seedlings are shown in Table 4.
6.2.5.3 The specifications of large plant type seedlings are shown in Table 5.
Table 3 Specifications of small plant type seedlings
project
Small plant type
Butterfly Orchid Cattleya Oncidium Autumn Dendrobium Orchid Spring Dendrobium Orchid Level 1 Level 2 Level 1 Level 2 Level 2 Level 1 Level 2 Tiller number (strain) >=3 >=2 1-2 1 1-2 1-2 1-2 1-2 Number of leaves/(piece) 4 leaves 1 heart the above 3 leaves 1 heart the above >=4 >=3 >=4 >=3 >=4 >=3 Leaf length/(cm) 4.0 ~ 7.0 6.0 ~ 10.0 >=6.0 >=4.0 >=6.0 >=5.0 >=6.0 >=5.0 Leaf width/(cm) 2.5 ~ 4.0 2.0 ~ 4.0 >=2.0 >=1.8 >=2.5 >=2.0 Stem thickness/(cm) >=0.8 >=0.7 >=0.5 >=0.7 >=0.5 Plant height/(cm) >=12 >=8 >=8.0 >=6.0 >=3.5 >=10.0
Table 4 Specification and index of medium plant type seedlings
project
Medium plant type
Butterfly Orchid Cattleya Oncidium Autumn Dendrobium Orchid Spring Dendrobium Orchid Level one level two level two level one level two level one level two level one level two Tiller number (strain) >=3 >=2 1-2 1 1-2 1-2 1-2 1-2 Number of leaves/(piece) 4 leaves 1 heart the above 3 leaves 1 the above >=4 >=3 >=4 >=3 >=4 >=3 Leaf length/(cm) 6.0 ~ 9.0 7.0 ~ 12.0 >=9.0 >=6.0 >=6.0 >=5.0 >=7.0 >=6.0 Leaf width/(cm) 4.0 ~ 6.0 3.5 ~ 5.5 >=2.2 >=2.0 >=3.0 >=2.5 Stem thickness/(cm) >=1.0 >=0.8 >=0.6 >=0.7 >=0.8 Plant height/(cm)) >=4.0 >=20.0 >=15.0 >=12.0 >=8.0 >=10.0 >=7.0 >=20.0 >=15.0
Table 5 Specifications of large plant type seedlings
project
Large plant type
Butterfly Orchid Cattleya Oncidium Autumn Dendrobium Orchid Spring Dendrobium Orchid Level one level two level two level one level two level one level two level one level two Tiller number (strain) >=3 >=2 1-2 1 1-2 1-2 1-2 1-2 Number of leaves/(piece) 4 leaves 1 heart the above 3 leaves 1 heart the above >=4 >=3 >=4 >=3 >=4 >=3 Leaf length/(cm) 7.0 ~ 10.0 10.0 ~ 15.0 >=14.0 >=10.0 >=8.2 >=7.5 >=8.0 >=6.0 Leaf width/(cm) 4.0 ~ 6.0 3.5 ~ 6.0 >=3.0 >=2.5 >=3.5 >=3.0 Stem thickness/(cm) >=1.0 >=2.5 >=1.3 >=1.0 >=0.8 >=0.7 >=1.6 >=1.2 Plant height/(cm) >=25.0 >=20.0 >=20.0 >=15.0 >=15.0 >=10.0 >=30.0 >=25.0
6.3 Middle seedling management and quality level
6.3.1 Transplanting period and method
Phalaenopsis seedlings grow from 3.5 to 4 months, Dendrobium seedlings grow from 4 to 6 months, and Oncidium seedlings grow from 6 to 9 months Later, after 12 to 18 months of growth of the Cattleya seedlings, the root system had reached the pelvic floor but had not yet reached a circle.
Ming nutrition bowl. When changing pots, they are classified according to the size of the seedlings, and the same level is placed in the same tray. Water moss is compacted during planting so that the moss does not bury the base the shoots but the roots of the root system are not fully exposed. After planting, the water moss should be about 2.0 cm below the edge of the pot or below the waterline of the pot mouth.
6.3.2 Environmental control
The day temperature is 25 ° C ~ 28 ° C, the night temperature is 18 ° C ~ 22 ° C, the relative humidity of the air is 60% ~ 85%, and the light is controlled at 8000 ~ within 14 days after changing the basin.
10000 lux (144 ~ 180 µmol · m-2s-1), the light intensity of Phalaenopsis after the seedling is controlled is 12000 ~ 15000 lux (216 ~ 270 µmol · m-2s-1), the light intensity of Cattleya, Oncidium and Dendrobium was gradually increased to.20000 ~ 25000 lux (360 ~ 450 µmol · m-2s-1).
6.3.3 Fertilizer and water management
Seedlings should be fully watered before transplanting, and not watered within 5-7 days after transplanting. After 7 days of transplanting, the wetness of the water moss can be properly watered. Transplant After 15 days, 1500 times N-P2O5-K2O was irrigated at a ratio of 10-30-20 fertilizer solution. After 20 to 25 days of planting, 1000 times N-P2O5-K2O was sprayed.
20-20-20 fertilizer solution, once every 5-7 days, spraying 1000 times of N-P2O5-K2O ratio every 25 days is 25-10-20 fertilizer solution. In the middle seedling management period Meanwhile, the EC value of the matrix was controlled at 1.0 ~ 1.2 ms · cm-1.
6.3.4 Pest and disease control
On the day of transplantation, spray with carbendazim or chlorothalonil or methyltobzine 1000 times for disinfection once, spray fenvalerate 2000 times for 10 days to kill Pest larvae and eggs hidden in water plants. Maintain air circulation and clean environmental conditions during production, and use pest paper and for a combination of regular spraying, see Appendix A for pest control.
6.3.5 Quality grade
6.3.5.1 The specifications and indexes of small plant type middle seedlings are shown in Table 6.
6.3.5.2 Specifications and indicators of medium plant type and medium seedling are shown in Table 7.
6.3.5.3 The specifications of large plant types for medium seedlings are shown in Table 8.
Table 6 Specifications of small plant types
project
Small plant type
Butterfly Orchid Cattleya Oncidium Autumn Dendrobium Orchid Spring Dendrobium Orchid Level one level two level two level one level two level one level two level one level two Tiller number (strain) >=4 >=3 2-3 2 1-2 1-2 1-2 1-2 Number of leaves/(piece) 5 leaves 4 leaves >=5 >=4 >=7 >=6 >=8 >=6 More than Leaf length/(cm) 6.0 ~ 10.0 8.0 ~ 12.0 >=12.0 >=8.0 >=10 >=9.1 >=6.0 >=5.0 Leaf width/(cm) 3.5 ~ 5.5 2.5 ~ 5.0 >=3.5 >=3.3 >=2.5 >=2.0 Stem thickness/(cm) >=1.0 >=1.0 >=0.7 >=1.6 >=1.5 >=0.8 >=0.5 Plant height/(cm) >=15 >=10 >=15.0 >=12.0 >=8.5 >=8 >=15.0 >=10.0
Table 7 Specification index of medium plant type and medium seedling
project
Medium plant type
Butterfly Orchid Cattleya Oncidium Autumn Dendrobium Orchid Spring Dendrobium Orchid Level one level two level two level one level two level one level two level one level two Tiller number (strain) >=4 >=3 2-3 2 1-2 1-2 1-2 1-2 Number of leaves/(piece) 5 leaves the above 4 leaves the above >=5 >=4 >=6 >=5 >=8 >=6 Leaf length/(cm) 9.0 ~ 15.0 10.0 ~ 15.0 >=16.0 >=12.0 >=12.0 >=10.0 >=8.0 >=7.0 Leaf width/(cm) 5.0 ~ 6.5 4.5 ~ 6.5 >=3.5 >=3.0 >=3.5 >=3.0 Stem thickness/(cm) >=1.5 >=1.3 >=1.0 >=1.5 >=1.4 >=1.2 >=0.8 Plant height/(cm) >=25.0 >=20.0 >=20.0 >=15.0 >=16.0 >=15.0 >=30.0 >=25.0
Table 8 Specifications and indicators of large plant types
project
Large plant type
Butterfly Orchid Cattleya Oncidium Autumn Dendrobium Orchid Spring Dendrobium Orchid Level one level two level two level one level two level one level two level one level two Tiller number (strain) >=4 >=3 2-3 2 1-2 1-2 1-2 1-2 Number of leaves/(piece) 5 leaves the above 4 leaves the above >=5 >=4 >=5 >=4 >=14 >=12 Leaf length/(cm) 10.0 ~ 15.0 15.0 ~ 20.0 >=22.0 >=17.0 >=13.0 >=11.0 >=10.0 >=8.0 Leaf width/(cm) 5.0 ~ 7.0 4.5 ~ 8.0 >=4.5 >=4.0 >=4.0 >=3.0 Stem thickness/(cm) >=3.2 >=1.8 >=1.3 >=1.5 >=1.3 >=2.0 >=1.6 Plant height/(cm) >=30.0 >=25.0 >=30.0 >=25.0 >=30.0 >=25.0 >=40.0 >=30.0
6.4 Management and quality level of large seedlings
6.4.1 Transplanting period and method
Phalaenopsis middle seedlings grow after 2.5 to 3.5 months, Dendrobium middle seedlings grow for 4 to 6 months, and Oncidium middle seedlings grow for 6 to 9 months.
Later, after 12 to 24 months of growth of the Cattleya seedlings, the root system has not reached a circle to the bottom of the pot or the plants in the pot are crowded and some parts have grown out of the pot.
You can change from f6.5 cm ~ f8.5cm transparent nutrition bowl to f10.0 cm ~ f12.5 cm transparent nutrition bowl. Other steps are the same as 6.3.1.
6.4.2 Environmental control
The day temperature is 25 ° C ~ 30 ° C, the night temperature is 18 ° C ~ 24 ° C, the relative humidity of the air is 60% ~ 85%, and the light intensity within 1 day after transplanting is 12000 ~ 15000 lux (216 ~ 270 µmol · m-2s-1), the light intensity of Phalaenopsis after the seedling is controlled is 15000 ~ 20,000 lux (270 ~ 360 µmol · m-2s-1), the light intensity of Cattleya, Oncidium and Dendrobium was gradually increased to 25000 ~ 30,000 lux (450 ~ 540 µmol · m-2s-1).
6.4.3 Fertilizer and water management
No water and fertilizer were applied within 7 days of transplanting. After 7 days of transplanting, the wetness of the water moss could be properly watered. After transplanting for 15 days, 1000 times N-P2O5-K2O ratio for example, apply 10-30-20 fertilizer solution once, and then irrigate 3000-fold N-P2O5-K2O fertilizer solution with a ratio of 20-20-20 fertilizer solution, once every 7-10 days and spray every 30 days.
3000-times N-P2O5-K2O ratio is 15-20-25 fertilizer solution. During the management of large seedlings, the EC value of the matrix was controlled at 1.2 ~ 1.5 ms · cm-1.
6.4.4 Pest and disease control
During the production period, maintain air circulation and clean environmental conditions. The prevention and treatment of diseases and insect pests adopt the method of combining sticky paper and regular spraying.
See Appendix A for pest control.
6.4.5 Quality grade
6.4.5.1 The specifications of the small plant type and large seedlings are shown in Table 9.
6.4.5.2 The specification index of medium plant large seedlings is shown in Table 10.
6.4.5.3 Specifications of large plant types and large seedlings are shown in Table 11.
Table 9 Specifications and specifications of small plant types and large seedlings
project
Small plant type
Butterfly Orchid Cattleya Oncidium Autumn Dendrobium Orchid Spring Dendrobium Orchid Level one level two level two level one level two level one level two level one level two Tiller number (strain) >=4 >=3 >=3 2-3 2-4 2-4 2-4 2-4 Number of leaves/(piece) 5 leaves 1 heart the above 4 leaves 1 heart the above >=5 >=4 >=6 >=5 >=10 >=8 Leaf length/(cm) < 15.0 12.0 ~ 16.0 >=16.0 >=14.0 >=11 >=10 >=8.0 >=7.0 Leaf width/(cm) 4.0 ~ 5.6 3.0 ~ 6.0 >=4.0 >=3.5 >=3.5 >=3.0 Stem thickness/(cm) >=1.5 >=2.2 >=1.7 >=2.0 >=1.8 >=1.2 >=0.8 Plant height/(cm) >=20 >=15 >=20.0 >=15.0 >=18.0 >=15.0 >=30.0 >=25.0
Table 10 Specifications and specifications of medium plant type seedlings
project
Medium plant type
Butterfly Orchid Cattleya Oncidium Autumn Dendrobium Orchid Spring Dendrobium Orchid Level one level two level two level one level two level one level two level one level two Tiller number (strain) >=4 >=3 >=3 2-3 2-4 2-4 2-4 2-4 Number of leaves/(piece) 5 leaves 1 heart or more >=5 >=4 >=8 >=6 >=12 >=10 Leaf length/(cm) 15.1 ~ 19.0 15.0 ~ 25.0 >=20.0 >=15.0 >=14.0 >=12.0 >=10.0 >=8.0 Leaf width/(cm) 5.7 ~ 7.3 5.0 ~ 9.0 >=4.0 >=3.5 >=4.0 >=3.0 Stem thickness/(cm) >=1.5 >=2.6 >=2.1 >=2.0 >=1.6 >=2.0 >=1.6 Plant height/(cm) >=38.0 >=30.0 >=25.0 >=20.0 >=30.0 >=25.0 >=40.0 >=30.0
Table 11 Specifications of large plant types and large seedlings
project
Large plant type
Butterfly Orchid Cattleya Oncidium Autumn Dendrobium Orchid Spring Dendrobium Orchid Level one level two level two level one level two level one level two level one level two Tiller number (strain) >=4 >=3 >=3 2-3 2-4 2-4 2-4 2-4 Number of leaves/(piece) 5 leaves with 1 heart or more and 5 leaves or more >=5 >=4 >=10 >=8 >=18 >=16 Leaf length/(cm) >=19.0 >=30.0 >=30.0 >=25.0 >=16.0 >=14.0 >=13.0 >=10.0 Leaf width/(cm) >=7.4 5.0 ~ 10.0 >=5.0 >=4.5 >=5.0 >=4.5 Stem thickness/(cm) >=2.5 >=3.0 >=2.3 >=2.0 >=1.6 >=2.0 >=1.6 Plant height/(cm) >=45.0 >=40.0 >=40.0 >=35.0 >=60.0 >=50.0 >=50.0 >=40.0
7 Seedling quality inspection methods
7.1 Visually inspect the overall effect of the plant, the degree of pests and defects, and whether the culture medium is contaminated.
7.2 Visually check whether the leaf shape of the control plant has variety characteristics.
7.3 Measure leaf length, leaf width, and root length with a ruler with an accuracy of 0.1 cm, and measure stem thickness with a vernier caliper with an accuracy of 0.02 mm.
8 Seedling quality inspection rules
8.1 Group approval
The same time, the same variety, the same origin, the same specifications of seedlings for a test group approval.
8.2 Sampling
The random sampling method is adopted to randomly select 10% from the submitted inspection lot. The unit is strain (bottle), and the minimum is not less than 12 strains (bottle).
Tested per plant.
8.3 On-site inspection
8.3.1 Out-of-plant inspection
Before going out of the nursery, the quality inspectors carry out inspections according to the indicators of the shape and grade.
8.3.2 Settlement inspection
Before each batch of products is sold, a delivery inspection is performed, and its contents include shape and quality indicators, labels, signs, and packaging.
8.3.3 Type inspection
Type inspection is a comprehensive assessment of the product, that is, inspection of all requirements (indicators) specified in this standard. One of the following situations should perform type inspection.
Large disputes between the settlement parties;
Large changes in the production environment due to human or natural factors;
The national quality supervision agency or the competent authority proposes the type inspection requirements.
8.4 Decision rules
The individual samples of the samples taken are inspected one by one according to the indicators in the tables. One item does not match, and is judged by level. The allowable degree of the entire batch of products is 10%, and the failure rate is If it exceeds 10%, it will be graded according to the external level.
8.5 Marking, packaging, storage and transportation
8.5.1 Signs and labels
The outer packaging shall be marked and labeled with the production unit, address, variety name, quantity, quality level, execution standard number, inspection date Period, date of release, and warning signs.
An inspection certificate is attached to the packing box, indicating the quality level, inspection date, inspector...
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 9 pages — is available in the English PDF.
How to Download LY/T 3099-2019
- 1
Add to cart
Click "Download PDF" on this page and choose "Buy this standard". You can add more standards before checkout.
- 2
Checkout
Enter your email and billing details. Payment is processed securely by Stripe (cards or bank transfer). Prefer bank details? Request a quotation (min. order $300).
- 3
Instant delivery (0–9 sec)
Delivery is automatic: within seconds of payment you'll receive an email with a secure download link. The link stays valid for 72 hours.
- 4
Invoice included
A tax invoice is attached to the confirmation email. Need a custom invoice? Contact us.
Related Standards
LY/T 1186-2026 — Technical Specifications for Desertification Prevention and Control
LY/T 1268-2026 — Determination of chemical indicators of forest plants and litter
LY/T 1285-2026 — Sawn timber for transportation vehicles
Secure payment via Stripe
Payments accepted
LY/T 3099-2019
$240.00