At what temperature is litchi suitable for growth?

Litchi is native to the south subtropical region of China, and the annual average temperature in the main producing areas is 20-23℃, which limits its planting and distribution. Growth and development need high temperature and high humidity, and the optimum growth temperature is 23-29℃, and 10- 12℃ grows slowly. It should be cold for a short time in winter to inhibit vegetative growth and promote flower bud differentiation. Flowering begins in spring at 10℃, and the highest flowering occurs at 18-24℃. The low temperature and rainy weather in flowering and young fruit period led to a large number of flowers and fruits falling, or even all lost. 0-2℃ will suffer from low temperature hazards, but adult trees can tolerate -2.8℃ or even lower when there is no growth activity. Litchi needs enough water to grow, and the annual rainfall is required to be above L 200 mm. The annual rainfall in the main producing areas of South China is1500-1800 mm. Litchi likes light and is known as "Litchi of the Day". Shao Yaonian's analysis of Guangzhou's climate in recent 20 years shows that the temperature in 10 is low (1-15℃), there are many sunny days (15-22d) and the sunshine time is long (1/kloc). Avoid typhoons during the vigorous growth period of litchi and before fruit picking. Suitable for mountain red yellow loam, flat sandy loam, alluvial soil and even clay, but sandy loam with deep soil layer, good drainage and irrigation, more than 2% organic matter, loose soil and acidity (pH5-6) can promote the proliferation of rhizosphere bacteria is better. The general requirements are that sufficient sunshine and rain are needed during the vegetative growth period, the flower bud differentiation period is dry at low temperature, and the weather is sunny during the fruit development period, preferably with rain for several days.