In the coming year, we will create a sense of hierarchy and remove soft branches; Spraying paclobutrazol or Huaguoling on fruit branches in March and April; At 9- 10, the pomelo tree was cut and tied; Control the application amount and time of nitrogen fertilizer, apply potassium dihydrogen phosphate when buds grow, and spray 0. 15% stretching sand and 0. 15% zinc sulfate at flowering stage.

1, shaping lath

If pomelo trees don't blossom and bear fruit, they need pruning next year. Letting them grow freely will lead to no flowering and no fruit. In the second growing season, the layering should be shaped and shaped to prevent the tree from growing vertically, and the weak branches should be removed to avoid consuming the nutrients of the fruit branches.

Step 2 spray hormones

Spraying plant growth regulators, such as paclobutrazol or Huaguoling, on fruit branches in March and April only promotes their flowering and fruiting. The result of pomelo trees not flowering may be that they have just experienced unstable climate change, which leads to the disorder of plant hormone secretion in their plants and needs artificial adjustment.

3. Artificial stimulation

During 9~ 10, the pomelo trees were cut and tied. Manually stimulate grapefruit trees to release appropriate hormones to prepare for the coming year. When girdling, the main branch or auxiliary branch should be girdled. Be careful not to cut off the xylem and girdle it with iron wire. When the pomelo tree withers, it needs to be loosened in time.

4. Rational fertilization

Control the application amount and time of nitrogen fertilizer. Too much nitrogen fertilizer will cause pomelo trees to grow white. Nitrogen fertilizer such as urea is not applied in spring germination, but phosphorus and potassium fertilizer such as potassium dihydrogen phosphate is applied, and topdressing is needed in flowering period. Spraying 0. 15% stretching sand and 0. 15% zinc sulfate without applying compound fertilizer.