Apple trees bloom from April to May every year.

The flowering time of apple trees is not fixed, and the flowering period varies with different climates. In that year, the climate recovered quickly, the temperature stabilized, and the flowering time was early, but the climate recovered slowly, and the flowering time was delayed. For example, when the temperature reaches 15℃, the buds of apples will separate, and when the temperature reaches 18℃, the flowers of apples will open for the second time.

There are 3-7 apple flowers in corymbose inflorescences, which are concentrated at the top of branchlets. The petals are obovate, white in color and pink in bud.

The flowering period of the important nectar plants in the northern area of apple trees varies with varieties and different climates, but most of them bloom from mid-April to early June. The staggered flowering period of the same variety can reach 15 to 2 days, and each colony of bees can produce 1 to 2 kilograms of apple honey in a flowering period.

Precautions for apple trees before flowering

1. Pest control is the most important.

In spring, fruit tree rot entered the peak of the first infection in the whole year, and pathogens such as powdery mildew, early defoliation, ring rot and anthracnose began to infect for the first time, and overwintering generation insects, eggs and pupae such as scale insects, golden moth and spider mite also began to sting. At this time, it is important to do a good job in pest control, which plays an important role in lowering the source base of overwintering pests and reducing the control pressure in the later period. In addition, the resistance of various pathogens and pests to drugs is poor in this season, and the leaves.

2. It is the key point to cut again in time before flowering.

Re-shearing before flowering is an effective measure to correct winter shearing mistakes and make up for tree damage caused by climate and mechanical damage. This measure can adjust the proportion of flower buds and leaf buds and coordinate the relationship between growth and fruiting. For young trees that have just borne fruit, we should keep as many flower buds as possible to slow down the vegetative growth.

3. Good management of fertilizer and water is the guarantee.

on the basis of applying sufficient organic fertilizer, topdressing chemical fertilizer can meet the nutrient requirements of flowering, fruit setting and new shoot growth of fruit trees. The amount of topdressing can be determined by soil, tree potential, tree age and yield. In addition, in the middle and late March to early April, combined with topdressing for watering. Because the temperature is still low at this time, the irrigation amount should not be too large, so as not to reduce the ground temperature and affect the root development. The orchards that were not filled with frozen water years ago should be watered in time to facilitate the germination, flowering and fruit setting of fruit trees.

Baidu Encyclopedia-Apple (Rosaceae Malus)