Flower fertilization needs to be symptomatic, how to identify flower diseases and control them.

1. Urea and ammonium sulfate are quick-acting nitrogen fertilizers with high fertility and quick effect, but the effective period is not long. Urea partial alkali, suitable for northern flowers; ammonium sulfate into the soil into acid, suitable for southern flowers, it is best to add water 1000Mel 1500 times dilution, and then irrigate, do not sprinkle in the basin, otherwise the flowers and trees will be burned to death due to excessive application.

2. Calcium superphosphate is a kind of quick-acting phosphate fertilizer, which shows slightly acidic reaction, and its fertility is relatively soft. it can be mixed with cultivated soil according to 1RV 100, or sprinkled into flower beds and flower beds before planting and used as base fertilizer after ploughing. When topdressing, add water 30ml / 100x, soak for a day and night, then take the clear liquid above to irrigate.

3. Potassium dihydrogen phosphate is an advanced available phosphorus and potassium fertilizer, which is odorless and tasteless, and has remarkable fertilizer effect on chrysanthemum, rose, Dahlia, kumquat and other ornamental flowers. When applied, it should be diluted in 500 ml 1000 times water.

4. Boron borate has a significant effect on promoting flower bud differentiation, gestating flower buds and preventing fruit drop. The flower plant can be sprayed with 2000ml 2500 times boric acid diluent several times before and after budding.

5. When ferrous sulfate is used to cultivate flowers in southern acid soil in the north, the leaves often turn yellow and fall off. In order to prevent leaf yellowing, ferrous sulfate solution diluted 500 times can be irrigated regularly and irrigated every 15 ~ 20 days.