Propagation method of olive

Olive is native to southern China, medium-altitude ravines, hard pulp like spindle-shaped, hard core, olive is a commonly used garden tree species, fruit medicine can treat diarrhea. It has good economic value. The propagation and seedling techniques of large area planting of olive are mainly seeding and grafting, which can not only maintain excellent genetic characteristics, but also obtain high-quality characters of other varieties.

First, sowing and raising seedlings

1. Seed collection

Choose the high-quality fruit that you want to keep the seed and leave it unpicked. When the fruit is fully ripe and the flesh is soft, you can pick it and pile it together for about a week or so, leaving the pulp rotten. Then soak it in salt water and wash off the pulp and mucus to ensure that the seeds are smooth and clean, and then rinse the salt water again. After fishing out and drying, the sand storage completes the post-ripening stage, and the seeds are preserved with 60% clean river sand layer by layer, accumulating about 5 layers. Control the temperature and humidity, check whether it will rot and deteriorate, and generally hide it in a dry shaded room.

two。 Prepare for

Seedlings can be raised on the land, but in order to facilitate management, seedlings can be raised in containers such as seedling bags and trays. Clean the seedling tray and prepare nutritious soil. The seeds should be taken out the day before sowing and then selected, soaked and sterilized with chemicals, then soaked in warm water for two days, and then sowed in the incubator for germination, because the seeds are hard and difficult to sprout.

3. Sowing seeds

Sowing to sow from February to March in early spring, after loading the nutrient soil into the seedling bag, you can directly put 1 or 2 seeds in each bag, sowing depth about 4 cm under the soil, covering soil 1 cm, watering and spraying, so as not to wash away the covered soil. Move to a shady place or build a shade net and spray water every night

4. Seedling stage

Maintain the humidity and temperature of the environment soil, after emergence to control diseases and insect pests, to sprinkle a layer of sawdust or pine needle on the soil, can keep warm and moisturizing, control some diseases and weeds. After emergence, it is necessary to water and fertilize frequently to promote growth.

2. Grafting

1. Time method

Before the sap flows, the seedlings of the rootstocks grow and transplant, as at the end of March, and operate on a sunny day when the temperature is above 15 degrees. Pick strong one-to two-year-old branches from adult trees as scions, and then graft them by cutting. The time should be fast, aim at the cambium and tie them up. Check the survival, can be made up. After survival, get rid of the trap and remove the lower buds of the grafting.

Olives can be directly sown and then transferred to the field for planting, which can ensure the characteristics of the plant. It can also be grafted after raising seedlings, select changes, and add the characteristics of other plants, which can have a variety of characteristics at the same time. In theory, it can be regarded as two ways of raising seedlings.