Due to the different climate, the flowering period of apples varies greatly. Generally in April-May, the low temperature zone may be postponed to the beginning of May-June, and the result time is 7- 165438+ 10. There are 3 ~ 7 flowers in each bud, and the central flower blooms first. The flowering period of a single flower is about 4 to 5 days, and the flowering period of the whole tree is about 7 days.

Provide sufficient nutrition for apple to start flower bud differentiation. At this time, pay attention to control the temperature and light, and control the growth temperature of apples between 12 ~ 18℃ to allow them to receive enough sunlight, strengthen photosynthesis and promote good flowering. From April to June, apples enter the flowering period, so water should be poured before flowering, and water should be stopped during flowering to avoid falling flowers. It is necessary to carry out bud thinning in time, cut off bad flowers and flowers with bad growth together, and maintain a healthy growth state.

Growth habits of apples

Apples can adapt to most climates. It is the best choice for apple growth between 35-50 degrees north and south latitude. Apples need 1000- 1600 units of heat and 120- 180 days of frost-free weather. Warm during the day and cold at night, and as much light radiation as possible is the premise to ensure good quality. Apples can resist the frost of minus 40℃.

If the temperature is between -2.2℃ and -3.3℃ during flowering and fruiting, it will affect the yield. Compared with other deciduous crops, apples bloom later. Thereby reducing the probability of suffering from frost. However, for some varieties and regions, the frost effect is more obvious there, so an effective anti-freezing system is necessary. It is most suitable for neutral and well-drained soil with pH value of 6.5.