How to select Platycodon grandiflorum seeds? What are the methods of raising seedlings?

I believe many people are familiar with the animation "Invyasha". The stories and characters in it come from Platycodon grandiflorum, because Platycodon grandiflorum is a loyal flower, symbolizing the love that will last forever. Of course, Platycodon grandiflorum not only has a beautiful legend, it is also the most popular herbal plant for both medicine and food. After a successful trial in the 1970s, it is widely planted in Anhui, Henan, Hubei, Hebei, Shandong, Sichuan, Zhejiang, Northeast and Inner Mongolia. So in the process of planting Platycodon grandiflorum, how to select seeds and raise seedlings? Let's study together today.

How to select Platycodon grandiflorum seeds?

When planting Platycodon grandiflorum, it is generally necessary to choose biennial Platycodon grandiflorum seeds. This kind of seed is big and full, the color is dark, the emergence rate is relatively high after sowing, the plant grows fast, and the yield is high. In addition, in terms of variety, Platycodon grandiflorum can be divided into wild and domestic species, and domestic species occupy a dominant position. Platycodon grandiflorum is also divided into southern Platycodon grandiflorum and northern Platycodon grandiflorum, but the quality of southern Platycodon grandiflorum is better than that of northern Platycodon grandiflorum, and the quality of Platycodon grandiflorum is the best in Anhui province.

What are the methods of raising seedlings?

1. Land selection and preparation

Choose sunny, leeward, fertile, deep and loose soil, good drainage, humus-rich loam planting. The time for soil preparation can be turned in both spring and autumn, and autumn is better. In the previous crop harvest deep ploughing about 30 cm, combined with ploughing per mu of rotten soil mixed fertilizer 4000 kg, calcium superphosphate 30 kg, rake fine leveling.

2. Cultivation methods

Direct sowing was used to raise seedlings and transplant. The main root of Platycodon grandiflorum is straight and stout, with few bifurcations and easy to process. Seedling transplanting is beneficial to centralized management at seedling stage, saving labor and land, but the main root is not obvious, bifurcations are many, and scraping is difficult.

3. Seedling raising and transplanting

Seedling transplanting can be harvested more than half a year earlier, and the yield per unit area can be increased by about 2 times. After ploughing and raking the land, ditches are made for the border, which is generally 12 meters wide and about 20cm high. It can be planted in autumn or in spring, and it will wither in the upper ground until it freezes. Spring is planted before thawing to Qingming Festival. When transplanting, the soil was arranged according to the method of raising seedlings, and sufficient bottom fertilizer was applied, and the seedlings were carefully planted in the ditch.

4. Weeding between seedlings

When the seedling height is 3-6 cm, the seedlings are 1-2 times, and the seedlings are too dense. When the height of the seedling reaches 6 cm, fix the seedling, the distance between the seedlings is 6-10 cm. Small seedlings, weak seedlings and diseased seedlings should be removed when fixing seedlings, and loose soil and weeding should be combined with inter-seedlings.

5. Keep the seed

Platycodon grandiflorum has a long flowering period, bolting and flowering from the upper part, and the fruit ripens first from the upper part. The seeds that bear fruit in the later stage of the north often cannot mature due to the influence of climate. The lateral branches and apical inflorescences can be cut off in early September to promote the fruit to mature and the seeds to be full. From September to October, when the fruit changes from green to yellow, cut off the fruit stalk, put it in a ventilated and dry room and ripen for 2 ~ 3 days, then dry and thresh.

Platycodon grandiflorum as a rare medicine and food homologous plant, mostly purchased with fresh goods, and then processed into strips of silk, bubble system for sale, commodity Platycodon grandiflorum quality product standards are relatively high. In the actual process of planting management, we should strengthen seedling management, improve the planting quality and yield of Platycodon grandiflorum, and promote yield and income.

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