How to choose sunflower seeds? What are the methods of raising seedlings?

If you live in rural areas, it is estimated that you can often see sunflower, its price is high, especially the medicinal effect is very good, so how to choose sunflower seeds? What are the methods of raising seedlings? Friends who want to know, please take a look at the following!

First, how to select sunflower seeds?

The seeds of sunflower trees growing in sandy and yellow soil are the best. The sunflower tree bred with this kind of seed has strong trunk, strong petiole, high budding rate and easy to grow, while the seed near water garden is poor.

2. Seedling raising methods of sunflower seeds

1. Seed collection

Sunflower is mainly propagated by seeds, blossoming from March to April and ripening fruit from September to October. Generally speaking, the germination rate of single-year-old fruit is higher than that of double-year fruit, so more than 20-year-old strong mother trees should be selected for seed collection.

2. Raising seedlings

Sowing, secret sowing and on-demand. Dense sowing is the first to accelerate germination, and sow seeds as soon as the buds break through the seed coat. The seedlings were transplanted when the height was 6-9 cm and could be colonized after 18 months. On-demand sowing also requires sprouting and bed transfer, with a sowing distance of 15 × 15 cm, so that the seedlings grow strong and can be planted after a year and a half. Whether sowing densely or on demand, vegetables or other short-term crops should be planted between rows to ensure adequate moisture in the seedlings and avoid direct sunlight.

3. Colonization

According to the requirements of the use, the people of Xinhui in Guangdong adopt different planting densities and divide the sunflower leaves into three kinds: three flags, two flags and three kinds of glass sunflower. Glass sunflower and three flags are used to make superior fans and hand baskets, while the second flag is used to peel off sunflower skins and bones to weave sunflower mats and brooms. The row spacing of three banners and two banners is generally 1.3 × 1.3 meters, while the row spacing of glass sunflower plants is relatively small, usually 60 × 60 cm or 24-30 cm, which is planted between the third flag and the second flag. 2-year-old seedlings should be planted in holes during the period of "Rain Water" in spring. Apply sufficient basal fertilizer when planting and sprinkle with water after planting.

4. Nurture

After planting, it is often necessary to loosen the soil, weed, fertilize and interplant. Every time sunflower leaves are cut, human feces and urine should be given once, especially for three banners and glass sunflower. Insufficient fertilizer, slow growth of young leaves, and even reduced yield.

5. Pest control

The common pests are mainly green insects, black insects and yellow insects, among which green insects are the most harmful, which can be sprayed with DDT or controlled with BHC powder, or can also be caught manually.

Well, that's all the editor wants to share with you today. if you choose sunflower seeds, it's best to choose sunflower seeds that grow in sandy and yellow soil. In addition, if you do not know how to raise seedlings, you can learn some of the above methods, hoping to help you!

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