First, the sowing method of leek seeds
1, select the time
Although leek can be sown all year round, it is most suitable for sowing in spring and autumn, with the average temperature of 15 ~ 18℃ in spring and 18℃ in autumn. Because of the different climate between the north and the south, it is necessary to choose the sowing date according to the specific temperature.
2, soaking seeds to accelerate germination
First, the leek seeds are dried in the sun for 1 ~ 2 days, then stirred in warm water at 40℃, fished out and cleaned, then soaked in water at 30℃ for 8 ~ 18/8 hours, then germinated at 18 ~ 20℃, and the seeds can be planted when the radicle of the seeds protrudes.
3, reasonable sowing
How to plant leek seeds? Sow leek seeds directly in the prepared soil, then cover the seeds with a thin layer of soil, pour enough water, and then cover them with a plastic film to keep warm and moist.
4, curing and seedling emergence
If it is potted leek, it is best to put it in a place where light is scattered, and it will germinate in a week. If leeks are planted in the ground, pay attention to the dryness and wetness of the soil. Usually 1 week will germinate. After 70% seeds germinate, remove the plastic film.
Second, the maintenance and management of leeks
1, water properly
After the leek grows new leaves, it should be watered with some slow seedling water to keep the soil moist. Generally, leeks are watered to keep the plateau dry and wet. If it is planted in the open field, it can be done by natural rainfall. If it is really dry, it can be supplemented manually.
2. Rational fertilization
In order to make leeks grow fast, it is necessary to apply some fertilizers properly, and nitrogen fertilizer can be applied every other month. But don't apply too much fertilizer, otherwise it will easily lead to root burning. When you accidentally fertilize too much, water a lot to dilute the fertilizer.
4, timely weeding
If the leek is planted in the open field, weeds will easily grow among the seedlings, so it is necessary to weed it in time, at least four times in the growing season of leek, or spray it with Wei Ba concentrated emulsion.
Step 4 harvest regularly
After leek is ripe, it is usually harvested once every other month, and the best harvesting position is outside 1 cm. If the harvest is too frequent, it will lead to premature senescence of plants, and it is advisable to harvest in the morning.
Third, the prevention and control of common diseases and insect pests of leek
1, leek maggot
After leek is invaded by leek maggots, it will cause the young stems of leek to rot, leading to the yellowing of leek leaves and death. In summer, leek maggots will sneak into the ground, which may lead to the bulb rot and the whole plant death. It is easy to control deltamethrin by spraying deltamethrin EC in time after discovery.
2. Gray mold
Chinese chives