The flower spike treatment removes the flower spikes that have been extracted. When the flower spikes are re-extracted more than 15 cm, 3-4 branch spikes are left for each branch, and 10-15 cm for each branch spike.
Pest control The development period of flower spikes is the occurrence period of diseases and insect pests such as downy mildew and litchi stink bug, and insecticide and fungicide should be sprayed once every half month.

The key to managing whether cross-pollinated plants can produce high and stable yields during flowering is whether pollination and fertilization are good at flowering. In particular, the flowering period of litchi is generally in the Qingming solar terms, and it often encounters rainy and low-temperature weather, so it is necessary to do the flowering and pollination work of litchi.
Fertilizer management before flowering: the purpose is to absorb the fertilizer before the litchi blooms and supply the flower spikes and fruit growth. The organic fertilizer is applied after the pure flower spike is extracted, and the chemical fertilizer is applied at the latest 15-30 days before flowering. Use water fertilizer 7 to 15 days before flowering. The amount of fertilizer applied is 2 kg of compound fertilizer and 1 kg of potassium fertilizer per 100 kg of litchi surface.
Strong fruit fertilizer: If the amount of litchi fruit is large, the leaf color is yellow, and the tree is weak, it should be supplemented with strong fruit fertilizer. The amount of fertilization depends on the specific situation. Generally, 1-2 kg of compound fertilizer and 0.5-1.5 kg of urea are applied per 100 kg of hanging fruit trees.
Water management Due to the drought and lack of rain last winter, water deficit, and high temperatures this spring, water management is extremely sensitive and should be treated differently depending on the species. Litchi should be dry rather than wet, so as not to cause the decline of tree vigor. During the development period from flower spike to fruit development, it is necessary to maintain a balanced supply of water and keep the soil moist, which is conducive to the growth and development of flower spike and fruit.
Soil management If the garden is not cleaned in winter, and the irrigation and drainage channels are trimmed, we must strive to clean the garden before flowering in Qingming to fertilize the soil. At the same time spraying kills overwintering pests and reduces the base of pests.

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