This standard specifies the method and procedure for determining seed weight. This standard applies to the weight determination of forage seeds, lawn grass seeds and forage crop seeds for quality inspection. GB/T 2930.9-2001 Forage seeds inspection procedure Weight determination GB/T2930.9-2001 Standard download decompression password: www.bzxz.net

TC565.020.20
National Standard of the People's Republic of China
G/T 2930. 12930. 11—2001
Rules for inspection of forage seeds
Rules for fur forage set lesting2001-03-14 Issued
2001-06-01 Implementation
Issued by the National Quality and Technical Supervision Commission
GB/T 2930.9—2001
This standard is compiled in accordance with the International Species Testing Association (ISTA) and has made revisions to GB2530—19824 International Species Testing Procedure (1999 Edition).
This standard has equivalently adopted Part 10 of the International Standard (ISTA.1999) on the main technical contents such as species and their inspection methods: Determination of heavy metals: In addition, 29 species with important economic value and risk of disease in my country have been included in the International Species Testing Procedure. For the first time, the standard has been used to It has the advanced and scientific nature of international standards and can meet the actual needs of seed inspection in my country. This standard mainly changes Chapter 8 of GB2930-1982: It integrates and adds the number of species: In the analytical method, it removes the "twice average method" and adds the "number shift method". The standard is based on the GB/T2530.1~293.11-2000 seed inspection standard series. This series of standards includes the following parts: GB/2530.1-2000 seed inspection standard GB/T ... 2980.2—2GG.1
Test procedure for forage seeds
Purity standard
GB/T 2930.32CC:
GB/I ​​2930.4--2521
GB/T 2950,5-21
GR/T2930.E—2531
Test procedure for forage seeds
Test procedure for grass seeds
Determination of the number of other plant species
Penetration test
Test procedure for harvested apple seeds
Biochemistry of cattle vitality (tetrazolium determination
Test procedure for grass seeds
Test status of forage seeds
GB/T 2S3C.7200)
GB/T 2536. 8—2001
GB/ 2930.9:2001
Testing of health
Standard for inspection of development varieties
Testing procedures for harvested seeds
Sub-standard
Testing of forage seeds
Testing of annual liability
GB/T 2935.10—2001
GB/T2933.112001
Testing procedures for inspection of forage seedsbZxz.net
Testing of coated seeds
Testing procedures for inspection of forage seeds
Testing report
The format of the standard for the standard is somewhat different from that of international standards. All annexes of international standards are placed after the main text of all inspection items, while most of the contents of the standard are in the appendix, which is inconvenient for users to refer to each other. In the compilation of this standard, the abbreviations of each standard are used as independent abbreviations, the main content is included in the main text, and the relevant appendices are placed immediately after the main text of each standard. This standard replaces Chapter 1 of GB22301982 from the date of implementation. This standard is proposed and managed by the Ministry of Agriculture of the People's Republic of China. The drafting unit of this standard is: Ministry of Agriculture and Rural Affairs, ... Seed quality is a comprehensive collection of characteristics that are important to different parts of the seed industry, including producers, processors, storage operators, farmers, certification bodies and government agencies or departments responsible for seed management. In all cases, the ultimate goal of quality inspection is to determine the seed's value as a marketable product whose condition can be accurately predicted. The methods used must be based on in-depth knowledge and experience of the scientific community and the seed inspection industry, and on the accuracy of the required inspection methods. This practice establishes standard definitions and methods that can be used to determine the quality of seeds traded internationally, for which a high degree of accuracy and reliability is required. When seeds are traded across national borders, they may be inspected by inspectors in different countries. Therefore, it is important that all seeds use consistent standard methods so that uniformity can be achieved within the scope of the inspection set. The regulations are divided into two parts: the main body of the regulations and the design. The main body of the regulations describes the requirements and principles of each item, the definitions of the drugs used, and the order and order of printing. The appendix part defines the definitions and details the editing and implementation methods of the new regulations. If the results of the inspection are to be filled out according to this chapter, the regulations must be strictly followed, and the interpretation of the provisions of the regulations should be consistent with the relevant details of the appendix to the chapter. It is recommended that countries adopt this regulation and its appendix as far as possible when managing domestic seed trading and implementing national and seed quality management regulations. Although it is not necessary to use the international seed inspection certificate in this case, it should be recognized that the regulations and conditions accepted by countries for international use are not derived from the regulations and conditions. Seeds between countries are communicated through advisory inspections. Advisory inspections are inspections of seed batches for special purposes based on the requirements of the submitted seeds. Such inspections need to take into account factors such as the season of planting, the type of pond and the separation required. For this inspection, this regulation and its appendix provide · A basic guide, other technical references may be used as supplementary methods. The regulations and annexes are prepared for major international products. Although not a complete list of details, they are generally used for the regulations and other types of work. In addition, in order to provide adequate guidance, it is necessary to mention the instruments and equipment of special manufacturers. This is not a good idea. STA believes that such instruments are not well prepared and excludes similar products of other manufacturers. 1 Standard
National Standard of the People's Republic of China
Rules for Forage seed testipgWeight determinationlon
This standard specifies the reading methods and procedures in GB/T 2930.9. 2001
Reputation (23-162 Chapter 8
This standard applies to a single product, total area and feeding specifications for the production and quality of the product. 2 Referenced standards
The following standards contain reference texts that have been used in this standard and are included in this standard. When the three standards were published, the versions shown were valid. All international standards have been revised. All parties using this standard should consider the following standards. Or the new version is too called energy. GB/,0.2-2 (01 forage species -F inspection rules in the treatment of degree analysis GB/T8170-1957 WeChat Yu about heat rules
3 inspection purpose
re-measurement of the month is the payment of the sample or the selected sample represents the batch of each 1000 seeds of the transport volume 4 instruments
meet) several kinds of plate suction high altitude several kinds of instrument:
h) variable is .001g or 0 (U center 1& balance: 5 inspection sequence
5.1 test group product
take all the clean seeds after purity classification as the test sample, 5.2 mechanical counting
pass the whole sample through the counter, and read the number of seeds shown on the counter. After counting, weigh the test sample (), the decimal point shall comply with the provisions of GB/T293).2---2011 Table 1, 5.3 counting micro-repetition method
take a blue replicate from the test product, 100 seeds in each replicate, and weigh them separately according to the specified decimal places (according to 5.2 specification!
calculate the variance, standard difficult coupons and heterogeneous series connection formula (), formula (3) i calculation: variance (2X) -(3X)
Each person's copy
Approved by the State Administration of Quality Supervision, Inspection and Quarantine 200-0314 and implemented on June 1, 2001
Where: ×——Average copy number of 100 particles, CB/T 2930.9-2001
Standardized addition (S) - Coefficient of variation =
S×100
If the seeds of grass groups with added content are collected, according to the provisions of Appendix 4 (Standard Appendix) in GH/T293F2-201, the coefficient of variation shall not exceed 6.9,If the coefficient of variation of other samples does not exceed 1, the results of the test can be calculated. If the coefficient of variation exceeds the above limit, 8 more samples should be collected, and the standard deviation of the 6 replicates should be calculated: all replicates with a difference of more than half the standard deviation should be ignored, and the remaining replicates should be included in the calculation of the test results, the calculation and expression of the results of the 6 replicates should be carried out, and the weight of the entire test sample should be converted into the thousand-grain weight of the seeds, expressed as "". The counting rate method should be adopted, and the average of 100 grains of 2 or more samples at each time should be calculated and expressed as a decimal point (see 5.2). The data should be checked in accordance with the provisions of GEN/T8170.
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