"Late spring and early summer are the key periods for litchi management." On March 25, in the village of Shiling, Lantian Street, Jiangyang District, Luzhou City, Huang Qimeng, an agricultural technician and party branch secretary of the village, came to the village to demonstrate the litchi demonstration plantation. The base will explain to the villagers who are in the process of protecting litchi here the spring protection technology of litchi.
Flower spike treatment
When the flower spikes that have been extracted are removed, and 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 a month.
Flowering period management
Whether cross-pollinated plants can produce high and stable yields depends on whether they can be pollinated and fertilized well during the flowering period. 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
Pre-flowering fertilizer: The purpose is to absorb fertilizer and supply the flower spikes and fruit growth before litchi blooms. The organic fertilizer is applied after the pure flower spike is extracted. The chemical fertilizer is applied at the latest 15-30 days before flowering. Apply just 7-15 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.
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