Detailed Explanation of Key Cultivation Techniques for Jizui Lychee

Cultivation points: 1) Select mountainous land, hills, or flat land with deep soil and good drainage. Spring or autumn planting is suitable, with a planting spacing of 3 m x 5 m and 45 plants per mu. 2) Focus on promoting new shoots to expand the canopy, use fertilizer and water management, apply frequently and lightly, and use "two fertilizations per shoot flush" to continuously promote shoot growth. This increases the number of branch orders and expands the canopy. After 2-3 years of management, allow the tree to bear fruit after the canopy spread reaches 2 m. Shaping and pruning generally adopt the natural round-headed form, using methods such as pinching, heading back, thinning, and bud removal to inhibit shoot growth and promote branching. Note that young trees grow vigorously. When water conditions are good, site conditions are excellent, and growth vigor is strong, using girdling measures makes it easier to form flowers, and short flower panicles easily set fruit, but affected by climatic conditions, empty shells (seed abortion) are prone to occur. 3) Prune after fruit harvest and during shoot flushing periods, using methods such as thinning, heading back, removing sprouts, and pinching to cut reasonably, retaining sunny branches, strong branches, and horizontal branches with good growth. Promote timely and robust autumn shoots as fruiting mother branches, control winter shoots, and promote flower bud differentiation. Increase flower quantity, protect flowers, protect fruit, strengthen flowers, and strengthen fruit. Increase the application of dry fertilizer. Promote fruit development and enlargement. 4) Pay special attention to strengthening fertilizer and water management. In particular, after fruit harvest, water and nutrients must be supplement to the plants in a timely manner. 5) Comprehensively control pests and diseases such as lychee stink bug, fruit borer, longhorn beetle, leaf roller, fruit-sucking noctuid moth, and downy mildew. For chemical control, trichlorfon and pyrethroid pesticides can be sprayed to kill pests. For physical control, frequency oscillation insect-killing lamps can be used for trapping and killing. Install one frequency oscillation insect-killing lamp every 4 hectares.