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

In nature, there are many kinds of trees. I don't know if we know silk cotton. It has strong adaptability, wide distribution, high ornamental value and wide use. So how to choose the seeds of silk cotton? What are the methods of raising seedlings? If you want to know more, please read on.

First, how to select the seeds of silk cotton?

To choose fresh seeds that are well ripe, old rotten seeds can't be bought no matter how cheap they are. Only by sowing with high-quality seeds can budding be more exuberant and trees will grow very luxuriantly, thus producing greater value and higher income.

2. Seedling raising methods of silk cotton

1. Seed collection

The mother tree should choose more than 20-year-old trees with strong growth, smooth bark, free of diseases and insect pests and unpeeled. Around the middle of November, the pericarp is collected when the pericarp turns brown and shiny. The seeds harvested should be kept in a ventilated place to dry in the shade, and do not bake with fire or exposure to the hot sun.

2. Budding treatment

The seeds sown in spring can be treated by the following two methods: one is 30-50 days before sowing, the seeds are mixed with 10 times wet sand, spread on the indoor ground according to the thickness of 30-40 cm, keep moist, and can be sown when the seeds are white. Second, soak the seeds in 20-30 ℃ warm water or cold water for 2-3 days, change the water once a day, remove the seeds and accumulate in the sunny place to use the method of "raw bean sprouts" to promote germination, turn 3-5 times a day, and sprinkle an appropriate amount of water, and sow when 30% of the seeds are white. Autumn sowing does not promote budding.

3. Land preparation

The sowing land should choose sandy soil that is deep, loose, fertile and moist, and should be deeply turned over, fertilized and disinfected. It is not suitable for continuous cropping, otherwise leaf spot will occur. The seedling land was divided into a bed with the size of (40.6) × (46.6) m and irrigated with water, and the ridge was 15 cm high. When the soil was not sticky, the soil in the border was loosely raked and leveled, and the ridge was stepped on and straightened.

4. Sowing seeds

Strip sowing was carried out in low bed with furrow depth of 5 cm, row spacing of 30 cm, covering soil of 1 / 2 cm and straw covering of 150 kg/hm / 2. The seeds treated by sand storage can be germinated and unearthed about 20 days after sowing.

5. Seedling stage management

(1) watering

After sowing, water properly according to soil moisture, often keep the bed moist, prevent seed buds from drying and seedlings from sunburn. But can not form stagnant water or cause soil consolidation, if too much water should be drained in time. When the seedlings grow to 3-4 cm high, uncover the grass in cloudy days or in the evening. Stop watering after September and pour enough bottom water before freezing.

(2) loosening soil and weeding

Loosen the soil and weed in time after irrigation and rain. The interrow grass is combined with loosening the soil, and the interplant grass is pulled by hand, in line with the principle of "getting rid of early, small, except", the weeds are eliminated in the bud.

(3) fertilization

Combined with watering, topdressing can be applied for 2 to 3 times, nitrogen fertilizer can be applied in the early stage of seedling growth to promote seedling growth, and phosphorus and potassium fertilizer can be applied in the later stage to promote the Lignification of seedlings.

(4) replenishing seedlings

In order to ensure the quality and yield of seedlings, seedlings must be replenished according to the situation. The principle of inter-seedling is to keep the good and get rid of the bad, sparse and dense. The seedlings are damaged by diseases and insect pests, mechanically damaged, poorly grown and overly dense seedlings. It is better to replenish seedlings on rainy days or in the evening. Water the seedlings in time after replenishing the seedlings and shade appropriately if necessary.

In the above, the editor shared with you in detail some of the selection methods and breeding methods of silk cotton seeds. If you also have ideas for planting silk cotton wood, you can learn from the content shared by the editor.

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