High-yield cultivation techniques of Camellia oleifera

When it comes to Camellia oleifera, we must be familiar with it. It can not only be used as an ornamental tree, but also can be used to extract oil. It has high economic value. What are the high-yield cultivation techniques of Camellia oleifera?

1. Select the place

Camellia oleifera is suitable for growing in the soil with deep soil layer (above 80cm), loose soil, fertile, moist, good drainage and ph value of 5-6.5. It is generally appropriate to hills, hills and plains with an altitude of 100-500 meters above sea level.

2. Select seedlings

Try to choose 1-year-old or 2-year-old high-quality grafted seedlings. 1-year-old seedlings require high 12cm and 2-year-old seedlings require high 30cm and finish planting on the same day.

3. Planting technology

The main results are as follows: (1) the planting time: from late January to early March, it should be planted in cloudy days after rain and not in dry soil. It would be better if it rained within 2-3 days after planting.

(2) Seedling treatment: dip the seedling root with phosphate fertilizer yellow mud before planting, and the 2-year-old seedling should remove 80% of the old leaves to reduce water evaporation.

(3) planting density: the row spacing is 2.2 m × 3 m, and the planting density is about 100 plants per mu.

(4) planting methods: deep planting and early planting are advocated to enhance the drought and cold resistance of seedlings.

4. Management technology after planting.

The main results are as follows: (1) moisture: after planting, the fixed root water was watered once, and the base of the seedling was covered with rice straw or mango Osmunda in order to prevent freezing and moisturize and improve the survival rate of seedlings.

(2) pruning and shaping: the trunk of the newly built Camellia oleifera forest should be cut short at 0.5-0.8m above the ground, and 4-5 robust branches with different directions and 10-15cm spacing should be selected as backbone branches after the germination of new branches. The distance between main branches and secondary branches should be kept 60-70cm wide. The useless and overdense branches germinated at the base of the main branch or on the trunk should be cut off in time.

(3) fertilization: in the young tree stage, the vegetative growth is the main growth, and the fertilization is mainly nitrogen fertilizer, combined with phosphorus and potassium fertilizer, mainly attacking the shoots in spring, summer and autumn. With the age of the tree, the amount of fertilizer application increased year by year. In the year of planting, there is no fertilization, or the seedlings can be properly irrigated with thin human feces and urine or 25-50 grams of urea or special fertilizer after the seedlings resume growth from June to July. From the second year, about half a month before shoot germination in March, available nitrogen fertilizer was applied, 50-100 grams per plant, and soil manure or manure was used as overwintering fertilizer in the first ten days of November, 5-10 kg per plant. With the growth of trees, the amount of fertilizer applied every year should be increased year by year.