The temperature requirement of longan differs depending on the physical time. It is advisable to use 10-14°C during the development period of flower spikes. If the temperature is too low, it is not conducive to heading. When the temperature is high, the spikes and leaves will grow vigorously and prone to appear. "Chong shoot" is not conducive to flower ear development.

The longan “shoot tip” refers to when the temperature exceeds 14°C, longan spikelets will revert to vegetative shoots, with buds falling off and bad flowering ears.

The recent warming of the climate is gradually picking up. When a spike appears, the newly opened leaves on the flower ear should be removed manually to reduce the consumption of nutrients so that the flower buds that have formed do not fall off, and a certain concentration of ethephon can also be sprayed. A certain concentration of uniconazole solution kills young leaves, ensures flower ear development, and improves the quality of flower spikes and flowers.

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