How far it is from the roots when fertilizing depends on the size of the plant.If it is a biennial plant, it should be 40 centimeters away.For three-year-old plants, the distance should be 50 cm.More than four years old to distance 80-100 centimeters, that is, the greater the number of years, the farther the distance.Because of the age limit, the longer the root system extends, not too close to the distance, easy to burn roots.
In addition to paying attention to the position, we should also pay attention to the depth of fertilization.According to the distribution of root system, fertilizer should be applied in the distribution layer, so as to better absorb and play its role.When fertilizing, you can dig a ditch with a width of 30-40 cm and a depth of 40 cm, that is, the depth is about 40 cm, too deep or too shallow will affect absorption.
When fertilizing, the base fertilizer is usually pig manure, cow manure, duck manure, chicken manure, barnyard manure and other organic fertilizers.In addition, the mobility of phosphate fertilizer is poor, so it is mostly applied with base fertilizer, 25-50 kg of superphosphate per mu.If it is used continuously for many years, it can be stopped for one year in the middle.Different fertilizer varieties should be selected according to different growth periods.Uch as the budding stage, urea fertilizer may be applied.Before flowering, phosphate fertilizer and potassium fertilizer should be applied to promote flowering.After flowering, topdressing treatment should be carried out, and compound fertilizer can be used to meet the demand.
