Here are the techniques for potted blueberries:
Potted blueberries, which enjoy flowers, fruits and experiences, are very popular among the public. Because blueberries are shrubs, it is easy to prune the ideal tree shape. Blueberries have white and beautiful flowers and sweet and delicious fruits. Will certainly become an important product for people's home greening and beautification. With the maturity of blueberry cuttage and tissue culture technology in China, it is no longer a dream for flower lovers to cultivate a small seedling into a potted plant full of blueberries!
One. Purchase time and management of potted blueberry seedlings
Potted seedlings can be planted all year round, and the best time is from autumn to the next spring before germination. The seedlings in this period are easy to transport, and the management and planting are relatively simple. After planting in autumn, a small amount of flowers and fruits can be produced in the second year and normal flowers and fruits can be produced in the third year. After the fifth year, blueberries can be potted at home and managed properly, and the fruiting period can last for 35 years.
Two. Tree species selection of blueberry potted seedlings
Rabbit eye blueberry, Sharp and O 'Neill are not self-pollinated, so pollination trees must be equipped to bear full fruits. It is not easy to choose this variety for family potted plants. Dwarf shrubs are only suitable for outdoor planting in the north, and other varieties can be used for family potted plants.
Three. Soil requirements
Blueberries, like acidic, soft, loose and breathable soil rich in organic matter, generally require soil pH value of 4.5-5.5 and soil organic matter content of 8%- 12%. Family potted plants can buy humus soil common in flower market, and add humus moss or peat, sawdust, rotten pine bark and other organic substances according to their own conditions, and add some edible white vinegar when watering at ordinary times (suggestion
Four. container
It is recommended to use a well-ventilated earthen basin, followed by a sand basin, and then a plastic basin. It is not recommended to use a pottery or porcelain basin.
Because blueberries are fibrous roots and shallow roots, large pots are not needed, and deep pots are forbidden. 15 cm pots are recommended for young seedlings, 25 cm pots for finished seedlings, and large pots are forbidden for young seedlings.
Five. Climatic conditions
A very important factor to ensure the fruiting of potted blueberries is to ensure that blueberries can withstand low temperature dormancy below 7.2 degrees Celsius in winter, and the lowest temperature they can endure varies with different varieties. For example, as a flower viewing, there is no need for low temperature restrictions.
Six. Watering management
Blueberries have shallow roots and are sensitive to water shortage, so it is necessary to keep the basin soil moist and free from water, which is different in different growing seasons of blueberries. In the vegetative growth stage, the most suitable water condition can always be maintained, which can promote the plants to be strong. However, in the fruit development stage and before the fruit matures, the water supply must be reduced appropriately to prevent the rapid growth of nutrition from competing with the fruit for nutrients. After the fruit is harvested, the most suitable water supply can be restored to promote the vegetative growth. Reduce the water supply from Mid-Autumn Festival to late autumn, so as to enter the dormant period in time. In order to maintain the acidity of the soil, it is suggested that the dosage is 3-5 degrees vinegar, 500 ml is applied every month, and half a tablespoon of vinegar is added.
Seven. Fertilize soil or land
Blueberries are nutrient-poor plants. Compared with other fruit trees, the contents of nitrogen, phosphorus, potassium, calcium and magnesium in trees are very low. Because of this feature, blueberries should be specially protected against excessive fertilization to avoid fertilizer damage. When blueberry is planted, organic matter has been mixed into the soil, so the fertilization of blueberry mainly refers to topdressing.
Phosphorus pentoxide and ammonium sulfate are suitable fertilizers for potted blueberries. Blueberry excessive fertilization is easy to cause tree damage or even death of the whole plant. Therefore, the amount of fertilization should be cautious, depending on soil fertility and tree nutrition, not less than more! In addition, blueberries cannot be applied with nitrate fertilizers, such as ammonium nitrate and potassium nitrate.
Eight. Plastic Pruning of Potted Blueberries
Pruning period can be divided into winter pruning and summer pruning, strictly speaking, dormancy pruning and growing season pruning.
Young trees that have just been planted need to cut off buds and too thin branches. For strong branches, it is generally necessary to prune them to varying degrees. In the first growing season of survival, cut as little or no as possible, and spread the crown and branches at the fastest speed.
When the first three young trees are pruned in winter, the weak branches, drooping branches, horizontal branches, cross branches, over-dense branches and overlapping branches in the crown are mainly thinned. You can cut off the bud at the top of the branch a little shorter. After germination in spring, some new shoots should be selectively erased as soon as possible to strengthen the growth potential of the retained new shoots.
After entering the full fruit stage, the crown size has basically reached the requirements, so we should start to control the further expansion of the crown and leave the limited space for more vigorous branches or branches. The principle is to remove the weak and retain the strong. In addition to weak branches, diseased branches, dead branches, cross branches and adjacent overlapping branches are also the objects to be refined.
In short, as long as it is properly managed, it is not difficult for flower lovers to cultivate a pot of blueberry full of flowers and fruits!