9%, the clarity is not less than 98. 0%; The germination rate is not less than 85%; The moisture content is divided into indica rice and japonica rice, and the moisture content of indica rice is not higher than 13. 0%, the water content of japonica rice is not higher than 14. 5%; The purity of improved varieties is not less than 98. 0%; The definition is not less than 98. 0%; The germination rate is not less than 85%; The moisture content is divided into indica rice and japonica rice, and the moisture content of indica rice is not higher than 13.
0%, the water content of japonica rice is not higher than 14. 5%。 2, hybridization, the first purity is not less than 98. 0%, the resolution is not less than 98. 0%; The germination rate is not less than 80%; The moisture content is not higher than 13. 0%; The purity of secondary species is not less than 96. 0%; The definition is not less than 98.
0%; The germination rate is not less than 80%; The moisture content is not higher than 13. 0%。 3. The parents of hybrid rice seed production, namely sterile line, maintainer line and restorer line, are divided into two grades: original seed and improved seed. The purity of the original seed is not less than 99. 9%, the clarity is not less than 98. 0%; The germination rate is not less than 80%; The moisture content is not higher than 13.
0%; The purity of improved varieties is not less than 99. 0%; The definition is not less than 98. 0%; The germination rate is not less than 80%; The moisture content is not higher than 13. 0%。
What are the precautions in the implementation of the single quality standard of corn seeder?
First, we should carefully choose seed types. The contents stipulated in this standard are mandatory, but the standard provides the selection of seed types for "field seeds (not single seed sowing)" or "field seeds (single seed sowing)" and adopts selective mandatory provisions.
If the corn seeds sold by seed enterprises meet the quality requirements of unicast seeds, seed enterprises are encouraged to sell them as unicast seeds. If the corn seeds sold by seed enterprises can not meet the unicast quality requirements, they can also be sold as non-unicast corn seeds, which will not have a negative impact on the production and operation of seed enterprises.
The second is to correctly guide the development of single seed sowing. If corn seeds meet the requirements of single sowing quality, the standard is essentially to give preferential policies to encourage enterprises to produce high-quality seeds, allowing them to mark "single sowing" or "suitable for single sowing" on the seed label, or to mark "suitable for single sowing" on the seed label, and to specify the variety characteristics and sowing precautions of single sowing corn seeds in the instructions for use. This is conducive to expanding the social impact of seed enterprises in producing high-quality seeds, especially in areas such as Northeast China, Huanghuaihai and other areas where corn unicast is widely promoted.
Rights and obligations are equal. The seed production and operation enterprises marked with "single seed sowing" should implement strict quality control and quality assurance for seed production and processing, and suggest actively adopting the index of "seed vigor" for monitoring, and at the same time popularizing supporting advanced technology, introducing high-quality machinery and equipment, and providing technical training for farmers to ensure the effective implementation of this standard and the planting effect of single seed sowing.
Third, it is suggested to label "non-single seed sowing". In order to prevent false labeling of single-seed sowing of corn, it is suggested to add "(non-single-seed sowing)" when labeling seed categories, or to indicate "not applicable to single-seed sowing" or "precision sowing" in the instructions. It is worth noting that all the words "suitable for single seed sowing" or "precise sowing" are marked on the seed label or instructions for use, which are also regarded as "single seed sowing" and should meet the seed quality requirements of this standard.
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, it is necessary to have unified quality standards to standardize and formulate the quality standards of seeds.
Legal basis: Article 15 of the Seed Law of People's Republic of China (PRC), the state implements a variety examination and approval system for major crops and major trees. The main crop varieties and main forest tree varieties shall be approved by the state or province before they can be popularized. The main tree species determined by the competent forestry authorities of the people's governments of provinces, autonomous regions and municipalities directly under the Central Government shall be examined and approved by the provincial level.
The varieties applying for examination and approval shall meet the requirements of specificity, consistency and stability.
Measures for the examination and approval of major crop varieties and major forest tree varieties shall be formulated by the competent departments of agriculture and forestry of the State Council. The examination and approval methods should embody the principles of fairness, openness, science and efficiency, which is conducive to the improvement and coordination of yield, quality and resistance, and to the promotion of varieties that meet the needs of the market and life consumption. When formulating and revising the examination and approval measures, we should fully listen to the opinions of breeders, seed users, producers and operators and representatives of related industries.