1. Corn seeds with formal approval number must be on the packaging bag, and the approval number must be marked on the packaging bag outside the product.
2, each variety of packaging bags, should have the corresponding approval number, such as Zheng Dan 958 approval number for the national trial jade 20000009, indicating that the variety was approved by the National Crop Variety Approval Committee in 2000, the approval number is 0009.
3. Remind farmers not to buy unapproved corn varieties, otherwise there will be endless troubles.