The reasons for this situation after transplanting sugar oranges are: the root injury is too heavy when transplanting, and the tree body is not properly pruned, which leads to the imbalance of root-shoot ratio and insufficient water and nutrient supply.

Countermeasures and suggestions: 1, pay close attention to proper pruning, sparse upright strong branches, thin weak branches, over-dense branches, overlapping branches and back cross branches, and only keep 1/2 branches to maintain an appropriate root-shoot ratio;

2. In winter, water is poured every 10- 15 days or so, and foliar water is often sprayed to replenish water.