LY/T 3106-2019Packaging of forest tree seed (English PDF)

3.1 Ultra-dried seeds

Seeds dried by artificial methods to below the safe lower moisture limit of 5.0%.

3.2 Normal Seed

It can be dried without damage under a wide range of environmental conditions. The storage life of the seed is reduced with the decrease of seed moisture content and storage temperature.

Improved in a quantitative and predictable way. The lower limit of seed water content can reach 2-6%, which varies with tree species.

3.3 Stubborn Seeds

Refers to seeds that are not tolerant to dryness and low temperature and cannot be used to predict the shelf life of the seed vigor equation. The lower limit of water content is 23.0% -61.5% it varies from tree to tree. Once the seed is dehydrated, it will cause rapid loss of vitality and affect its germination process.

3.4 Intermediate Seeds

Refers to a type of seed that is neither a normal seed nor a recalcitrant seed. Most seeds fall into this category. Carambola and papaya as an example, the seeds can be dried to 10-12% moisture content and can be stored sealed (not stubborn seeds), and not tolerant to 0 °C Warm (not a normal seed).

5.1 Packaging materials

Strong, durable, environmentally friendly, moisture-proof, clean, non-quarantine harmful organisms, and adapt to the physiological characteristics of forest seeds.

5.2 Container selection

Should be based on seed type, seed characteristics, seed moisture content, seed use, shelf life, storage conditions, transportation distance and geographical climate Conditions and other factors to choose packaging containers. Mainly sacks, woven bags, cloth bags, wooden boxes, metal cans (barrels), plastic barrels, glass bottles, poly Vinyl aluminum foil composite bags and polyethylene bags.

a. Ultra-dried seeds should be vacuum-packed in containers such as waterproof and airtight polyethylene bags and polyethylene aluminum foil composite bags.

b. The stubborn seeds should be packed with sacks, cloth bags, wooden boxes, etc. that have ventilation function.

c. Normal seeds and intermediate seeds should be dried to a safe moisture content range. In temperate areas, sacks, metal buckets, Plastic barrels, plastic woven bags or rubber-coated plastic woven bags are used for packaging; high temperature and high humidity in tropical and subtropical areas should choose tight, Pack in a moisture-proof container. The safe water content shall meet the corresponding regulations in GB 7908.

d. Long-term preservation and preservation of forest germplasm resources should choose metal cans (barrels), plastic barrels, glass bottles and polyethylene aluminum foil composite Packaging such as bags.

e. Forest tree seed storage conditions shall be implemented in accordance with GB/T 10016.

7.1 Packaging identification

7.1.1 Packaging identification includes seed labels, printed trademarks and designs, packaging specifications, and coated seeds and fumigated seeds should be labeled with the type of medicine and its content.

7.1.2 The seed label shall be printed, affixed or fixed on the surface of the seed package. Seed labels should indicate forest tree seed category, tree species or Variety name, place of origin, quality index, phytosanitary certificate number, net content (quantity), seed production license number, production date Period, name, address and contact information of the production operator. The content of the seed tag should be true, valid, and comply with the corresponding regulations of LY/T 2290 set.

7.1.3 Seeds with registered trademarks should be marked with the brand name and pattern, and the trademark pattern should be pasted or printed on a prominent place on the exterior of the package.

7.2 Packaging seal

The sealing should ensure the integrity of the packaging material, be strong and compact, and not be easily damaged in the storage, handling and transportation of seeds.