What kind of fertilizer is good for Platycodon grandiflorum base fertilizer (base fertilizer application method)

Effect of Platycodon grandiflorum base fertilizer

Platycodon base fertilizer can be divided into indirect fertilizer and direct fertilizer. Direct fertilizer can directly provide various nutrients needed by Platycodon, while indirect fertilizer mainly affects the growth and development of Platycodon by improving the properties of the soil.

Platycodon grandiflorum base fertilizer selection

Platycodon uses biological organic fertilizer as base fertilizer. If there is none, use triple compound fertilizer. It is best to add potassium fertilizer in the later stage of growth, which can promote growth and increase yield.

How to apply Platycodon grandiflorum base fertilizer

When applying base fertilizer to Platycodon, you can dig a small hole around the plant and bury the fertilizer in it. The fertilizer should not be too close to the roots, but should be kept at a certain distance and not exposed to direct sunlight.

How much base fertilizer should be added to Platycodon grandiflorum

The amount of base fertilizer applied to Platycodon grandiflorum is relatively large, generally accounting for more than 50% of the annual fertilizer application. If farmers' decomposed organic fertilizer is applied, 100-200 kg will be applied to each adult Platycodon grandiflorum, and 3-4 kg of lime will be added at the same time. Water-soluble fertilizer can be applied at a dosage of 5-10 kg per acre.

How to apply fertilizer to Platycodon grandiflorum

When renovating the soil for Platycodon grandiflorum, sufficient base fertilizer needs to be applied, and multiple topdressings need to be applied during the subsequent growth period to meet the growth needs of the plant, promote growth, and increase yield.

1. When the height of Platycodon grandiflorum seedlings reaches 15 cm, the first fertilizer can be applied. Human and animal manure, superphosphate, or ammonium sulfate can be applied to promote the healthy growth of the seedlings.

2. At the end of June and the beginning of July, before Platycodon grandiflorum blooms, combined with the second inter-row cultivation and fertilization, you can apply pre-flowering fertilizer, mainly human and animal manure, superphosphate or urea, superphosphate, and add soil after application to prevent rain erosion and plant lodging. You can also spray diluted dwarfing agent once in May after the first topdressing to control stem growth, thicken the plant and reduce lodging.

3. In August, you can combine inter-row cultivation and weeding with topdressing of fertilizers, such as human and animal manure and superphosphate. After winter, you can apply mixed fertilizers such as rotted manure, wood ash, compost, cake fertilizer, and superphosphate to the soil, mix them evenly, dig trenches beside the plants and apply them, cover with soil and fertilizer after application, and cultivate the soil.