What are the characteristics of longan trees?

Arillus longan is a typical subtropical perennial evergreen tree, which is warm-loving, frost-fearing, drought-tolerant, barren and shade-tolerant. Suitable for growing in areas with an annual average temperature of 20 ~ 22℃. The cold weather in winter is conducive to flower bud differentiation, the weather is too warm, the flower spike is few, the development is poor, and the flower and fruit drop are serious. Longan tree is tall, with a round or semi-circular crown and dense branches and leaves; The root system is developed, huge, deeply distributed, mycorrhizal, drought-resistant, acid-resistant and barren. Under normal cultivation and management conditions, the economic life of longan can be as long as several decades. It takes 7 ~ 10 years for longan seedlings to bear fruit after planting, but modern cultivation generally adopts grafted seedlings or ring-branched seedlings, which generally begin to bear fruit after 3 years and enter the high-yield period after 6 ~ 7 years, with short tree shape, low branches and neat crown, which is convenient for management and operation. At present, the adaptability of longan trees is very wide. As long as the soil layer is deep, better yield and better fruit quality can be obtained by paying attention to soil improvement and maturation and balanced fertilization in cultivation. However, natural factors such as light, temperature, moisture and wind in the external environment may also have a great influence on the growth, yield and quality of longan.