People's Republic of China (PRC) (China) National Standard-Crop Seed Quality Standard

oilseeds

GB 4407.2 - 1996

order

In order to protect the interests of seed production, management and users, avoid the loss caused by the use of unqualified seeds in production, and make the cultivated fine varieties obtain high quality and high yield, there must be a unified quality standard to standardize and formulate the quality standard of seeds.

Considering the systematicness and scientificity of the standard layout of crop seed quality, the overall layout was adjusted when it was revised, and the cash crop seeds were composed of two independent parts: fiber and oil. Among them, oil crops include rape, peanut, sesame and sunflower. For the convenience of use, the conventional species and hybrids of the same crop are arranged one after another.

According to GB/T 3543.1-3543.6-1995 "Rules for Inspection of Crop Seeds", the quality standards (purity, cleanliness, germination rate and moisture) of cash crop seeds in GB 4407-84 "Oilseeds" were analyzed through a large number of years of experimental research, typical investigations and spot checks. In principle, seed grades are not classified by conventional varieties, and hybrids are divided into first and second grades. Due to the great changes in the inspection method and judgment standard, the germination rate was changed to seedling judgment, so the value was lower than that before revision. By using the rapid method, the clarity is generally improved compared with that before revision, and the moisture standard value has little change.

This standard is proposed by the Ministry of Agriculture of People's Republic of China (PRC).

This standard is under the jurisdiction of the National Technical Committee for Crop Seed Standardization.

Drafting units of this standard: National Seed Station, Shaanxi Seed Station, Anhui Seed Station, Hunan Seed Station, Jiangxi Seed Station, Shandong Seed Station, Hebei Seed Station, Henan Seed Station, Hubei Seed Station, Heilongjiang Seed Administration, Shaanxi Seed Station and Inner Mongolia Autonomous Region Seed Station.

Main drafters of this standard:

Rape: Shi Shuling, Liu Huakai, Zhao Juying, Shen, Fu,,.

Peanut:, Deng Yinjin,, Huo.

Sesame: Liu, Liu Huakai, Song Xinmin, Nie Bingjun,

Sunflower: Chang, Shi Shuling and Chen Yajun.

This standard is entrusted to the National Agricultural Technology Extension Service Center of the Ministry of Agriculture for interpretation.

This standard was first published in May 2005 1984.

People's Republic of China (PRC) (China) National Standard

oilseeds

Replace GB 4407-84

1 range

This standard specifies the quality requirements, inspection methods and inspection rules of rape, peanut, sesame and sunflower seeds.

This standard is applicable to the seeds of oil crops produced and sold.

2 reference standard

The clauses contained in the following standards constitute the clauses of this standard by reference in this standard. When this standard was published,

All versions displayed are valid. All standards will be revised, and all parties using this standard should explore the following standards.

Possibility of a new version.

GB/T 3543. 1- 1995 general rules for crop seed inspection.

Sampling rules for crop seed inspection

Cleanliness analysis of crop seed inspection regulations (GB/T 3543.3- 1995)

Rules for inspection of crop seeds-Germination test

Authenticity of crop seed inspection regulations and identification of variety purity

Rules for inspection of crop seeds-Determination of moisture content

3 definition

This standard adopts the following definitions.

3. 1 original species

Seeds that have reached the quality standard of the original seed from the first generation to the third generation propagated by the breeder's seeds or produced according to the technical regulations of the original seed production.

3.2 Improved varieties

The first generation to the third generation propagated by conventional seeds and hybrids meet the quality standards of improved varieties.

4 Quality requirements

1. See table 1 for the quality indexes of hybrid rape seeds (three lines).

Table 1

Project crop name

grade

The purity is not less than

Cleanliness is not less than

Germination rate is not lower than

Moisture is not higher than

rapeseed

parents

stock seed

99.0

97.0

80

9.0

improved variety

97.0

mixture

Level a

90.0

97.0

80

9.0

4.2 See Table 2 for the quality indexes of conventional rape seeds.

Table 2

Project crop name

grade

The purity is not less than

Cleanliness is not less than

Germination rate is not lower than

Moisture is not higher than

rapeseed

stock seed

99.0

98.0

90

9.0

improved variety

95.0

4.3 See Table 3 for the seed quality indexes of peanut, sesame and sunflower.

Table 3

Project crop name

grade

The purity is not less than

Cleanliness is not less than

Germination rate is not lower than

Moisture is not higher than

peanut

stock seed

99.0

98.0

75

10.0

improved variety

96.0

sesame

stock seed

99.0

97.0

Eighty-five

9.0

improved variety

97.0

sunflower

stock seed

99.0

97.0

Eighty-five

12.0

improved variety

96.0

5 inspection method

5. 1 sampling

According to GB/T 3543.2.

5.2 clarity analysis

According to GB/T 3543.3.

5.3 Germination test

According to GB/T 3543.4.

5.4 Authenticity and variety purity identification.

According to GB/T 3543.5.

5.5 moisture determination

According to GB/T 3543.6.

6 inspection rules

According to the purity index of varieties, seed quality grades are divided. If the purity is not up to the original seed index, it will be reduced to a first-class seed, a second-class seed, and a second-class seed is unqualified.

Those whose purity, germination rate and moisture can't reach the index are unqualified varieties.

When the measured values of purity, purity and germination rate are compared with the specified values in the standard, the allowable errors used in comparison with the specified values in GB/T 3543.1-3543.6-1995 will not be implemented temporarily.