A Detailed Guide to Buying Channels and Seedling Methods for Sichuan-Yunnan Alder Seeds

Sichuan-Yunnan alder is a tree species of high value; its young stems and leaves or bark can be used as medicine, with good effects on treating hematemesis, diarrhea, dysentery and so on. So if you want to grow it, where are Sichuan-Yunnan alder seeds sold? How do you grow the seedlings? Let's find out below.

Where are Sichuan-Yunnan alder seeds sold?

There are many buying channels for Sichuan-Yunnan alder seeds. You can buy them at local flower and bird markets, seed shops, agricultural supply stores and so on. In addition, you can also buy them online, but note that when buying online you should choose merchants with a good reputation and high credibility, as this helps ensure the quality of the Sichuan-Yunnan alder seeds and improves the seedling emergence rate.

How do you grow Sichuan-Yunnan alder seedlings?

1. Sowing

Because Sichuan-Yunnan alder seeds are small and have a low germination rate, you should choose sunny, windless weather and sow in the morning or evening. After sowing, do not cover with soil; press appropriately at the right time so that the seeds and soil are tightly combined, cover with pine needles, and water thoroughly. Use spring sowing. Spring sowing is best done from mid-February to mid-March. Before sowing, soak the seeds in warm water for 1-2 days; for drilling, the sowing rate is 2-2.5 kg per mu.

2. Seedling stage management

About 30 days after sowing, the seedlings emerge. When the seedlings have 3-5 true leaves, thin or even out the seedlings. In sowing and seedling raising, seedlings are often too dense, or emergence is uneven and density is uneven, so thinning is needed. When thinning, pay attention to the timing, the objects of thinning and the intensity of thinning; it is better to do it early rather than late. The objects of thinning are seedlings that are affected by pests or diseases, mechanically damaged, poorly grown or abnormal. The intensity of thinning should not be too great at one time; generally it is done in 2-3 rounds.

3. Site selection and land preparation

The afforestation site is chosen on cutover land of artificial commercial forests at an average altitude of 1900-2300 m, with red soil, medium thickness, and slope aspect of shady slope or semi-sunny slope. For clearing the cutover land, first use planned burning to remove residual cut branches, pine needles, weeds and so on, then manually remove the remaining material and prepare the land. The land preparation specification is 40 cm x 40 cm x 30 cm. During land preparation, subsoil and topsoil are piled separately. When backfilling, remove weeds, pine needles, dead branches, tree roots and stones, and the backfill should be firm and full.

4. Planting techniques

When planting, achieve "straight seedlings, firm soil, level pits": the seedling stem should be vertical, the root system should be spread out, and the depth should be appropriate. After filling half the soil, lift the seedling and tread it firm, then fill more soil and tread it firm, and finally cover with loose soil. When planting container seedlings, tear off the container completely to ensure the seedlings overwinter successfully that year; in the second year after afforestation, replant once on plots whose survival rate does not meet the requirement, so that the young forest closes in time.

5. Disease control

Strengthen tending and thin at the right time to facilitate ventilation and light penetration; control aphids, scale insects and psyllids on alder; spraying 12-20 times diluted rosin mixture or 0.5-1 degree lime-sulfur mixture can achieve the purpose of controlling insects and preventing disease. For alder leaf beetles, use 90% trichlorfon 1000-2000 times diluted solution to spray and kill larvae and adults, and spray to kill before overwintering. Taking advantage of the adults' death-feigning behavior, shake the branches to catch and kill them. Protect natural enemies; the main natural enemies of alder leaf beetles are big hover flies, ladybugs, parasitic wasps and so on.

Sichuan-Yunnan alder has very high value. Its young stems and leaves or bark can be used as medicine, mainly treating hematemesis, epistaxis, diarrhea, dysentery and sores, and it is a tree species planted in many areas now. If you want to plant it, you can refer to the above methods.

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