1、 How long can we fertilize

Leek should be treated with topdressing in time after planting, neither too early nor too late. The root system applied too early has not grown with Topdressing and cannot be absorbed. It is easy to lack nutrition too late, which will also affect growth. It is suggested that fertilization should be carried out when new leaves grow after the fixed value. The fertilizer should use diammonium sulfate, with an application of 20 kg per mu

2、 How to fertilize after harvest

After it enters the harvest stage, it should be treated with topdressing in time. It cannot be fertilized immediately after harvest, otherwise the wound is easy to be infected. It should be dried for two days, and then watered and fertilized. At this time, 400 kg of rotten manure and 30 kg of compound fertilizer should be applied per mu, together with watering, so as to be better absorbed

3、 How long is it suitable for the first time

Leek is a perennial plant, which should be harvested in time during cultivation. If it is not harvested for a long time, it is unfavorable to growth. Generally, the first harvest can be carried out when it grows to 30 cm high after planting. It can't be too late or too early. Too late will affect the quality, too early will affect the growth. In addition, pay attention to fertilizing, watering and strengthening management in time after harvest. It can be harvested again in more than 20 days, five or six times a year. However, the growth rate will slow down in late autumn, and harvesting should be carried out according to specific conditions