Promote flowers and protect fruits:
Lemon is a tree species that blooms and bears fruit in all seasons, while potted plants in the north mostly bloom and bear fruit in spring. Therefore, after the autumn shoots stop growing, water should be controlled. When both sides of the leaves begin to roll in, water them moderately to promote flower bud differentiation. Pay attention to fertilization in the basin and spraying fertilizer on the leaves to cultivate strong mother branches. The main measures to protect fruits are: first, strengthen the supply of fertilizer and water and accumulate nutrients; The second is artificial pollination; The third is to sparse flowers and fruits. Lemon fruit is very big and needs a lot of nutrition. The normal leaf-fruit ratio is 30 to 40: 1. According to the principle of removing the weak and retaining the strong and evenly distributing, firstly, excessive and dense buds are loosened; When young fruit 1 cm, the fruit part becomes thinner; Finally, after physiological fruit drop, the fruit is determined according to the leaf-fruit ratio. You can also leave no weak branches and only 1 fruit for strong branches.