1 Height: 15-35 cm best, slightly out of range can be inserted 2 Seeding diameter : 2 5 mm preferably, slightly out of range can be inserted 3 .Roots: preferably within 60 mm, slightly out of range can be inserted 4 Seedling requirements: mainly nitrogen, and phosphorus, potassium, seedling quit water to pull most washable. 5 Working water depth: 10-20 mm better, a little more water can be inserted tractor 6 Mechanical conditions: Shimoda front friction parts and moving parts apply oil to achieve flexible rotation 7 Requirements put seedlings: seedlings substantially parallel , so the seedlings by hand after the release of 8 Planting effect: seedling plug neat, uniform, ventilation performance