烟草种子大粒化是通过种子包衣技术增大烟籽体积。大粒化育苗不仅能提高种子的利用率,降低劳动强度,而且省去催芽过程,相当于直接播种,其出苗速度虽较慢,但其根系较催芽播种的发达。同时,种子在包衣过程中加入多种营养元素、抗菌剂和 Granulation of tobacco seeds increases the volume of tobacco seed through seed coating techniques. Large-grain seedling raising can not only improve the utilization rate of seeds, reduce labor intensity, but also eliminates the need for germination process, which is equivalent to direct sowing, although its emergence rate is slower, but the root germination than the germination of sowing. At the same time, the seeds in the coating process by adding a variety of nutrients, antibacterial agents and