How to plant platycodon grandiflorum seeds?

How to plant platycodon grandiflorum seeds?

Platycodon grandiflorum seeds should not be aged for more than 2 years (seed aging 1 year germination rate is reduced by more than 70%), and germination tests should be carried out before planting to ensure that the seed germination rate is above 70%.

The specific method of germination test is: soak a small amount of seeds in warm water at 40 ~ 50℃ for 8 ~ 12 hours, take out the seeds, drain the water, put them on a cloth, mix them with wet sand, accelerate germination at about 25℃, and pay attention to turning and spraying water in time for 4 ~ 6 days. ?

Platycodon grandiflorum can be planted in spring or summer. Spring sowing should be soaked with warm scalding, so that the seedlings can emerge early. That is, put the seeds in warm water, then stir them until the water is cold, and then soak them for 8 hours. The place where the seeds are wrapped with wet cloth is covered with wet sacks, and washed with warm water once every morning and evening for about 5 days, and the seeds can be sown when they germinate. Scatter the seeds evenly in the ditch. Because the seeds are small, fine sand can be mixed with the seeds before sowing. After sowing, cover them with soil or ashes. After sowing in arid areas, water them to keep them moist. The amount of seeds used per mu is 500 ~ 750g. Pay attention to loosening soil and weeding when seedlings emerge. When the seedling height is about 2 cm, it is necessary to carry out thinning and leave strong seedlings according to the distance between plants. Where the seedlings are sparse or broken, they should be replanted on cloudy days. After applying diluted human and animal manure, cover it, then apply it again and cultivate the soil to prevent lodging. Cover after daubing. In addition, you should always loosen the soil and weed, and water it in time early in the day. It is usually harvested in late autumn or early spring after sowing and before germination.