Fertilization methods and matters needing attention of family potted flowers

First, the application method and dosage of base fertilizer

1. Flowers planted in the ground

(1) if the farm manure is sufficient, spread it first, spread it evenly, and turn over the soil with a spade.

(2) strip application: first use a pick to open a ditch, and then apply fertilizer into the ridge and furrow, this method is called strip application.

(3) acupoint application: first plan the acupoint, then apply organic fertilizer or chemical fertilizer into the acupoint, and then mix it with the soil in the acupoint with a hoe, this method is called acupoint application; when there is little fertilizer or quick-acting fertilizer, it is appropriate to use acupoint application.

2. Potted flowers

Mix the soil and fertilizer well, and then add the amount of nitrogen, phosphorus and potassium compound fertilizer or other chemical fertilizer 1kg, or calcium superphosphate 1.5kg, ferrous sulfate 2kg for every 1m of soil.

Second, the method and amount of topdressing fertilizer into the soil

1. Flowers planted in the ground

The main results are as follows: (1) the type, times and methods of fertilizer should be determined according to the type of flowers and the purpose of fertilization. at the same time, the fertilizer should be watered in time to make the fertilizer dissolve.

(2) Multi-use circular fertilization, fertilizing 15-20 cm away from the plant, do not fertilize directly next to the plant, otherwise it is easy to burn the flowers to death.

(3) Farm manure can be applied in the ditch and cover the soil in the ridge after application. Farm manure 1-1.5kg and chemical fertilizer 20-30g were applied per square meter.

2. Potted flowers

In addition to ring fertilization, it is best to use thin liquid fertilizer, when applying chemical fertilizer, it is best to spread chemical fertilizer in the basin, watering and melting in the soil.

Third, extra-root topdressing

1. All kinds of trace element fertilizers, urea, potassium dihydrogen phosphate and calcium superphosphate can be used as fertilizers for extra-root topdressing.

2. The percentage concentration of external topdressing of various chemical fertilizers: urea 0.5% Mel 1%; calcium superphosphate 1%; Ferrous sulfate 0.2% Mel 0.5%; Zinc Sulfate 0.05% Mel 0.2%; Borax 0.1% Mel 0.25%; ammonium molybdate 0.05% MAE 0.2%; CuSO4 0.2% MAE 9.4%.

3. It should be noted that the concentration of extra-root topdressing should not be too high and the times of application should not be too frequent.

IV. matters needing attention in fertilization

1. Fertilization time

Different flowers have different requirements for nutrients in different growth periods, such as applying more nitrogen fertilizer at seedling stage to promote seedling growth; applying phosphate fertilizer at bud and flowering stage to promote large and bright flowers; when potted flowers are fertilized, they should choose evening fertilization. Avoid fertilizing around noon of high temperature or rainy days.

2. Times of fertilization

During the peak period of flower growth, thin fertilizer and water should be applied every 7-10 days, and every 10-20 days after autumn, fertilization should follow the principle of "small amount and multiple times" or "thin fertilizer application frequently".

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