How many times a year do blueberries bloom? How many times do you bear fruit? How many fruits can a flower bud grow?

Blueberries are very popular because they are rich in vitamins and pectin. Regular consumption can improve immunity and accelerate blood circulation, so they are planted in many places. How many times a year do blueberries bloom? How many times do you bear fruit? How many fruits can a flower bud grow?

Blueberries blossom once a year, bear fruit once a year, and usually begin to blossom and bear fruit in the second year, but the yield is relatively small. It will be the third year before the normal output can be reached. So if growers are growing new blueberry seedlings, don't be too hasty. By the fifth year, blueberry seedlings will be able to enter the high yield period, basically each clump should have 25-30 fruiting branches, each plant can produce an average of 3 to 6 kilograms of blueberries, each blueberry weighs about 2 grams. According to statistics, if 300 blueberry seedlings are planted in an acre, the average yield can reach 1500 to 2000 kilograms.

The specific flowering time and fruiting time are:

Blueberry flowering time: blueberries bloom from February to April each year. In spring, blueberries reach full bloom three to four weeks after their flower buds germinate, and the leaf buds grow to their proper length. So whenever it comes to March or April, you can see blueberries in full bloom.

Blueberry result time: blueberries are native to North America, and nearly 90% of the world's blueberry products come from North America. The harvest season in North America is from mid-April to early October, and the harvest peak is in July, so July is also the famous national blueberry month. Breeding varieties requires frost-free weather for 120-160 days for the fruit to ripen.

How many fruits can a flower bud grow?

The flowers of blueberries are racemes. A flower bud will produce a pinch of flowers, which can usually receive more than 10 fruits, and there are differences among different varieties.

Attached planting techniques:

1. Reasonable selection of planting plots and varieties

Blueberry planting plots need sufficient light and good ventilation, loose soil, convenient drainage and irrigation, slope less than 10 degrees, pH value between 4 and 5, high content of organic matter, more than 50 grams per kilogram. If the soil has a high pH value, blueberries will be iron-deficient growth, prone to death; and if the soil pH value is too low, it will lead to blueberry heavy metal poisoning. If the soil has too large pH value, it can be adjusted with the help of sulfur powder, and the soil organic matter can be increased appropriately. If the soil has only a low content of organic matter, it needs to be improved. Peat soil, sawdust, crop straw and so on are all good choices. It is necessary to determine the planting varieties reasonably according to the local climatic conditions, production use and other factors. Cold-tolerant bushes blueberries and north high-bush blueberries can be planted in northern and alpine regions, while southern high-clump blueberries and rabbit-eye blueberries can be planted in hotter areas in the south.

2. Determine the cultivation season and density reasonably.

Blueberries can be planted in both spring and autumn, and the best choice is autumn, and planting in spring should be carried out as soon as possible. In general, it is better to plant blueberry at the age of 2 years, and the row spacing of dwarf blueberry, tall blueberry and rabbit blueberry is 1m × 1m, 1.2m × 2m and 2m × 2m, respectively. In terms of pollination varieties, rabbit eye blueberry self-pollination is more, but the seed setting rate is lower, so we can choose high clump blueberry in pollination varieties. High-clump blueberry and dwarf blueberry have higher self-flowering seed-setting rate, which can improve their yield and quality through the configuration of pollinated varieties, and the configuration proportion of main varieties and pollinated varieties can be determined according to the standard of 1:1 or 1:2.

3. Fertilizer and water management

Blueberry has a low demand for nutrition, so it can not be excessive fertilization, otherwise it will affect the normal growth of plants; in general, blueberry fertilization is carried out twice a year. The first fertilization was carried out before sprouting in early spring, and the second fertilization was carried out during the berry ripening period. Ditch application, hole application and so on are the more commonly used fertilization methods. The ditch application method is usually used to carry out the fertilization of rabbit eye blueberries and high clump blueberries, and the ditch depth is controlled according to the standard of 10-15 cm. Compared with single fertilizer, nitrogen, phosphorus and potassium compound fertilizer has greater advantages; if the soil has a higher content of organic matter, nitrogen fertilizer can be reduced appropriately. The distribution depth of blueberry root system is small, so it is necessary to irrigate frequently to maintain the soil moist state. During the rainy season, it is necessary to do a good job of drainage.

4. Pest control

Because blueberries were just introduced into our country in the 1980s, there are not many diseases and insect pests. Powdery mildew and downy mildew are common diseases. In the process of pest control, the garden cleaning treatment was carried out to remove the dead branches and leaves in the garden, and through the soil deep turning treatment, the diseased leaves and insect eggs were removed so as to reduce the overwintering base of diseases and insect pests. During the blueberry growing period, fungicides and insecticides are mainly sprayed to promote the effective control and control of blueberry diseases and insect pests.