How to choose leeks?

A: Harvesting time: Generally, in spring and early autumn, leeks are harvested when they grow to about 30cm and 5-6 leaves, and the specific choice is in sunny morning. Harvest frequency: no harvest in the year of planting, 3-4 crops in spring and 1-2 crops in autumn. Harvesting skills: stubble 4-6cm for the first time, increase stubble height 1.5-2cm each time during subsequent harvesting, and cut the knife at the beige leaf sheath.

First, how to choose leeks?

1. Harvesting time: Harvesting is generally carried out in spring and early autumn, and it is specifically selected in sunny morning.

2. Harvesting sign: When the leek plant grows to about 30cm, harvest it when the single plant grows to 5-6 leaves, and ensure that the growth time of each leek is more than 25 days, and stop harvesting 40 days before turning green.

3. Harvest frequency: No harvest is carried out in the year of planting, and about 3-4 crops are harvested every spring. The first crop is 40 days after turning green, the second crop is about 25-30 days away from the first crop, and the third crop is about 20-25 days away from the second crop. Rooting should be carried out in summer, but not over-harvesting in autumn. Generally, harvest 1-2 stubble and leek 1 stubble at the 7-leaf center stage. The specific harvesting frequency needs to be adjusted according to soil fertility, plant growth and market demand.

4. Harvesting skills: The stubble of leek is about 4-6cm when it is harvested for the first time, and the stubble height will increase by about 1.5-2cm after each harvest, so it is more suitable to harvest at the beige leaf sheath.

5. Post-harvest management: After harvest, when the new leek grows to 3-4cm, apply fertilizer, mainly using nitrogen fertilizer and human feces.

Second, the difference between leek and onion

1. Leaves: The leaves of leek are flat and solid with wax powder on the surface, while the leaves of onion are cylindrical, hollow and conical at the top.

2, smell: leek has a strong special smell, onion is onion fragrance.

3. Bulbs: The bulbs of leeks are narrow cone-shaped and clustered, with yellowish brown scales and reticular fibers, while the bulbs of onions are cylindrical, a small part of them are oval cylindrical, the base is enlarged, the scales are white, and a small part of them are pink thin leather.

4. Usage: Onions are mainly used for seasoning, and leeks are mainly used for eating.

5. Living environment: Chinese chives are cold-resistant and heat-resistant, and have strong shade tolerance. The suitable ph value of soil is 5.5-6.5, while leek is not resistant to heat, shade and strong light, and the suitable ph value of soil is 6.9-7.6.