First, the planting method of blueberries
1, select the appropriate variety. Blueberries are suitable for growing in temperate zones, so choose suitable varieties according to the climatic conditions in your area. The north can choose Beijing Blue, North Blue and so on. South China can choose Nanjing 844 and Nanjing 9 1 1.
2. Prepare robust blueberry seedlings. Select blueberry seedlings with 1-2 years old, developed taproots, uniform growth potential and root-shoot ratio of 1: 4-6.
3. Choose fertile acid soil and suitable planting density. Blueberries are suitable for growing in well-drained acidic soil. Row spacing is 2-3m, plant spacing is 0.5- 1m, and the number of plants per 667m2 is 500- 1000.
4. Add proper amount of acid fertilizer and base fertilizer. Blueberries have high requirements for acidic fertilizers. Before planting, apply 3-5 kilograms of acidic humus fertilizer or fertile soil to each plant, and add appropriate amount of phosphorus and potassium fertilizer to improve the acidity of root zone.
Second, the maintenance methods of blueberries
1, water and weed in time. Blueberries have a high demand for water, especially in the fruiting period, so they need to keep high humidity. Weed regularly to prevent weeds from robbing nutrients.
2. Prune blueberry bushes. It is necessary to trim the chest regularly, cut off the dense branches and leaves, promote the ventilation and light transmission of blueberries, and make the fruits get sufficient light and nutrient supply.
3. Control pests and diseases. Mainly prevent and control diseases such as blueberry aphids and blueberry fruit worms, and apply pesticides regularly.
Pruning method of blueberry
1, young tree pruning
Young trees are mainly cultivated. During this period, flower buds should be erased, weak branches should be thinned and nutrient consumption should be reduced. In the growing season, the new shoots of young trees are cored about 40 cm, increasing the amount of lateral branches and rapidly expanding the crown width.
2. Prune the result tree
In the growing season, the long branches and budding branches on the fruiting tree are pitted at the branch length of about 40 cm, which can not only make the branches grow thicker, but also promote the development of lateral branches and cultivate strong fruiting branches; You can also control the height of the tree, which is convenient for picking fruit. For 3-4-year-old fruit trees, the weak branches in the lower part and the crowded clustered branches in the middle of the crown are mainly removed. For the main branches that bear fruit for more than 5 years, they should be retracted in time on the plants with general tree potential; On plants with strong tree potential, it can be cut off from the base of the main branch.
The growth potential of different varieties is different, so the pruning intensity depends on the growth potential of the tree, so as to achieve the purposes of ventilation and light transmission, uniform tree body, promotion of flower bud formation, prevention of fruit node migration, and high and stable yield.