Is Hunan suitable for planting litchi?

Hunan is suitable for planting litchi.

Litchi trees like high temperature and humidity and sunshine. Its heredity requires that the temperature of flower bud differentiation is relatively low, but the lowest temperature is -2 ~-4℃, so they will suffer from freezing injury. It is sunny and warm in flowering period, and no dry heat is the most favorable. Too low humidity, continuous rain, dry and hot weather or strong north wind are not conducive to flowering and pollination. Unfavorable disaster weather in the flower and fruit period will lead to falling flowers and fruits, and even loss of harvest.

Hunan belongs to continental subtropical monsoon humid climate, which has three characteristics: First, light, heat and water resources are abundant, and their high values are basically synchronous. Second, the climate changes greatly in a year. It is hot in Leng Xia in winter, changeable in spring, sudden drop in autumn, rainy in spring and summer, and drought in autumn and winter.

It can be seen that because litchi likes high temperature environment, and Hunan's climate is characterized by light and heat, Hunan's climate is suitable for planting litchi.

Cultivation techniques of litchi;

Litchi is mostly planted on hills and slopes. These soils usually have low organic matter content, shallow soil layer and poor water and fertilizer conservation ability. If soil management is not paid attention to, the growth and development of litchi will be seriously affected.

Litchi mycorrhiza is aerobic, and the soil is loose and breathable, which is beneficial to the growth and development of roots. Young orchards generally loosen soil and weed 5-6 times a year. Summer and autumn are hot and humid, weeds grow rapidly, scarifying and weeding times are more, the ground temperature is lower in spring, the ground surface is dry in winter, rainfall is less, weeds grow slowly and farming times are less.

The main contents of soil improvement in litchi orchard include deep ploughing to promote ripening, thickening soil layer and increasing organic matter. Its purpose is to improve soil physical and chemical properties, improve fertility and create good conditions for root growth. The soil improvement method is to open an annular ditch or two flat fertilization ditches around the original planting hole. Apply farm manure 8- 10 kg, calcium superphosphate 1 kg and compound fertilizer 0.5 kg to each ditch, and then cover the soil 25-30 cm above the ground.

Refer to the above? Baidu Encyclopedia-Litchi, Baidu Encyclopedia-Hunan