Problems needing attention in fertilization of Flowers

Pay attention to the kinds of flowers when applying fertilizer

Different kinds of flowers have different requirements for fertilizer. Such as sweet-scented osmanthus, camellia like pig dung, avoid human feces and urine; rhododendron, tea

Flowers such as flowers and gardenias avoid alkaline fertilizers; flowers with foliage-based flowers can pay more attention to nitrogen fertilizer; flowers with large-scale flowers (such as chrysanthemums, dahlias, etc.) need to apply an appropriate amount of complete fertilizer during flowering in order to make all flowers bloom and achieve beautiful shape; flowers dominated by ornamental fruits should properly control fertilizer and water during flowering and apply sufficient complete fertilizer in the strong fruit stage in order to achieve the desired effect. Bulb flowers should apply more potash fertilizer to enrich their bulbs; fragrant flowers should apply more phosphorus and potash fertilizer to promote the strong smell of flowers when they enter the flowering stage; flowers that need to be re-cut every year need to increase the proportion of phosphorus and potash fertilizer to facilitate the germination of new branches.

2. Fertilizing should pay attention to the season

Spring and autumn is the peak period of flower growth, root, stem and leaf growth, flower bud differentiation, young fruit expansion, all need more fertilizer, should be appropriate more topdressing; summer temperature is high, water evaporation is fast, it is also the peak period of flower growth, the concentration of topdressing should be small, the frequency can be more; in winter, the temperature is low, the plant growth is slow, most flowers are stagnant and generally do not apply fertilizer. In addition, the application of organic fertilizer, must be fully mature, do not use raw fertilizer.

Fertilization should not be excessive.

Fertilization should be light and small according to the needs of flower growth, and the concentration and times of fertilization should be increased when the seedlings are large. Flowers absorb nutrients from the soil solution through the roots, such as excessive fertilization and high concentration of the soil solution, so that the water of the cells in the roots is absorbed out of the body by the over-concentrated soil solution, resulting in scorched leaves and "burning" of the roots.

Organic fertilizer must be fully ripened before it can be applied. Because of organic fertilizers such as leaves, vegetable leaves, and fish offal, a lot of heat will be generated in the process of decay and fermentation. if it is not fully mature, it will be directly put into the roots of flowers, and the roots will be "burned to death" in the process of decay, fermentation and exothermic heat.

Correctly grasp the usage and dosage of base fertilizer and topdressing fertilizer

The fertilizer applied to the soil before flower planting or potting is called base fertilizer, which is generally in the form of dry powder, such as livestock manure, bone meal, bean cake, etc., which requires that it contains more nitrogen, phosphorus, potassium and other components, which is conducive to improving the soil structure and can be decomposed continuously. to ensure the continuous need for a longer growth period. The base fertilizer must be rotten, applied under or around the root when planting flowers, but not in direct contact with the root, and the amount should be determined according to different types of flowers when potted. Base fertilizer is the basic nutrition of flower growth, which should be paid attention to.

During the growth of flowers, due to the luxuriant growth of branches and leaves, a large number of blossoms and fruit, consume a lot of nutrients, need to supplement fertilizer at any time, which is called topdressing. Topdressing is mainly liquid fertilizer, which is beneficial to soil absorption and root utilization. Topdressing can apply both inorganic fertilizer and organic fertilizer. Inorganic fertilizers must pay attention to the appropriate concentration, usually 0.1-0.5%, so as to avoid harm caused by excessive concentration; organic fertilizers must be fully mature, and the principle of "a small amount of meals" should be grasped.