This standard specifies the quality requirements, inspection methods and inspection rules for cabbage hybrids (heading), Chinese cabbage (heading) and cabbage (non-heading) seeds. This standard applies to the production and sale of cabbage seeds. GB 16715.2-1999 Vegetable Crop Seeds Cabbage GB16715.2-1999 Standard download decompression password: www.bzxz.net

GB16715.2--1999
In order to promote high-yield and high-quality products of excellent varieties in agricultural production, protect agricultural production, safeguard the interests of seed producers, operators and users, and meet the needs of foreign trade, the quality standards of cabbage seeds are specially formulated and revised. Based on extensive investigation and a large number of experimental studies on the current status of cabbage seed quality in my country, this standard revises the seed quality standards of Chinese cabbage (heading) and Chinese cabbage (non-heading) in GB80791987 "Vegetable Seeds". At the same time, the seed quality standards of hybrid Chinese cabbage (heading) are formulated. The standard items are still variety purity, seed cleanliness, germination rate and moisture. In this standard, the seed quality level is reduced, conventional seeds are not graded, and a standard value is set for each of the four indicators: purity, cleanliness, germination rate set as the minimum indicator, and moisture is set as the maximum limit. Hybrid seeds are divided into two levels based on purity, and the other three items are the same as conventional seeds. Due to the change of the inspection method and judgment standard, the germination rate was changed to the seedling identification method, so the revised value was lower; the purity adopted the rapid method, so the revised value was higher. The standard value of moisture did not change much. This standard was proposed by the Ministry of Agriculture of the People's Republic of China. This standard is under the jurisdiction of the National Technical Committee for Standardization of Crop Seeds. The responsible drafting units of this standard are: National Agricultural Technology Extension Service Center, Hejin Seed Station, Shandong Seed Station, Guizhou Seed Station, Inner Mongolia Autonomous Region Seed Station.
The main drafters of this standard are: Zhang Shumin, Yan Fuying, Zhang Chengyi, Fu Zonghua, Chen Yajun. This standard is entrusted to the National Agricultural Technology Extension Service Center of the Ministry of Agriculture for interpretation. 1 Scope
National Standard of the People's Republic of China
Seeds of gourd and vegetable--Chinese cabbage groupGB16715.2—1999
Replaces GB8079-1987
This standard specifies the quality requirements, inspection methods and inspection rules for hybrid cabbage (heading), Chinese cabbage (heading) and cabbage (non-heading) seeds.
This standard applies to cabbage seeds produced and sold. 2 Referenced Standards
The provisions contained in the following standards constitute the provisions of this standard through reference in this standard. When this standard is published, the versions shown are valid. All standards are subject to revision, and parties using this standard should explore the possibility of using the latest versions of the following standards. GB/T3543.1--1995 General rules for inspection of crop seeds GB/T3543.2-1995 Sampling of inspection procedures for crop seeds GB/T3543.3-1995 Purity analysis of inspection procedures for crop seeds GB/T3543.4-1995 Germination test of inspection procedures for crop seeds GB/T3543.5-1995 Identification of authenticity and variety purity of crop seeds
GB/T3543.6-1995 Moisture content determination of crop seeds
GB/T7414-1987 Packaging of main crop seeds GB/T7415-1987 Storage of main crop seeds 3 Definitions
This standard adopts the following definitions.
3.1 Basic seed
Seeds of the first to third generation propagated by breeder seeds or produced according to the technical regulations for basic seed production that meet the quality standards of basic seeds. 3.2 Quality seed
Seeds of the first to third generation propagated by conventional seeds or hybrids that meet the quality standards of improved seeds. 4 Quality requirementsbzxZ.net
The quality indicators of cabbage seeds are shown in Table 1. Approved by the State Administration of Quality and Technical Supervision on September 8, 1999, and implemented on February 1, 2000
Cabbage
Chinese cabbage)
Hybrids
Conventional seeds
Non-cabbage
(Chinese cabbage)
5 Packaging, transportation, storage, and marking
Performed in accordance with GB/T 7414 and GB/T 7415. 6 Inspection methods
6.1 Sampling
Perform according to GB/T3543.2.
6.2 Purity analysis
Perform according to GB/T3543.3.
6.3 Germination test
Perform according to GB/T3543.4.
6.4 Authenticity and variety purity identification
Perform according to GB/T3543.5.
6.5 Moisture determination
Perform according to GB/T3543.6.
7 Inspection rules
GB 16715. 2 -- 1999
Not less than
Not less than
Germination rate
Not less than
Not higher than
The purity index of the variety is used as the basis for dividing the seed quality level. If the purity does not meet the original seed index, it will be downgraded to the first-grade improved seed, if it does not meet the first-grade improved seed, it will be downgraded to the second-grade improved seed, and if it does not meet the second-grade improved seed, it will be unqualified seed. One index is set for each of the purity, germination rate, and moisture. If one of the indexes does not meet the index, it will be unqualified seed. When comparing the measured values ​​of purity, clarity, and germination rate with the specified values ​​in the standard, the allowable error used for comparison with the specified values ​​in GB/T3543.1~3543.6-1995 will not be implemented for the time being. 13
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