Cultivation and management of leek

1. Before freezing, dig a trench between the two layers 1.4m, with a width of 70cm and a depth of 50cm.

Add sand and organic farmyard manure to the excavated soil, mix them, backfill them in the ditch, coat them with antifreeze or cover them with old plastic to prevent freezing, and prepare for planting leeks.

2. Wind barrier

At the end of 10-at the beginning of10, the wind barrier was caught. The windbreak ditch is 30cm away from the northern end of leek boundary. In order to prevent the wind from blowing down, a cement column or wooden column should be erected every 5 meters, and grass felt or corn straw can be sandwiched in the middle of the windbreak wall.

The lower end of the back of the windshield is grounded to prevent freezing, generally 30-40 cm high. Under the condition of not lodging, it is advisable for the wind shield to form an angle of 70 with the ground.

3. Arch support

Complete the supporting arch before the middle of 1 1. It is required to clip the wind wall first and then build the arch shed.

At the boundary of every 70cm along the east-west direction, an arch with a height of about 70cm is set with bamboo skin with a width of about 4cm and a length of 3m, and wooden columns can be set under the bamboo skin to increase the bearing capacity.

The gap between the northern end of the arch shed and the wind wall is filled with straw and straw to prevent cold.

Buckle off the film.

/kloc-At the beginning of October and early February (before and after the spring break), the fertile soil around the border should be leveled on the spot, and the basal leaves of the leek stalks should be swept away, then the film should be buckled and the straw curtain should be covered.

5. Ventilation and dehumidification

According to the weather conditions, choose the appropriate ventilation time.

Combined with soil cultivation, soil loosening, soil collection and other operations to reduce humidity, in order to reduce the chance of bacterial infection.

6. Soil softening

When the covered leek seedlings were 1-5 cm, the first soil cultivation was carried out in sunny and warm weather.

After that, cultivate the soil every few days until the harvest is 3-4 times. Before cultivation, the soil does not press or lightly presses the leek tip. The total amount of soil cultivation is subject to the burying of aboveground leaves 10-20 cm.

The general soil depth is 10- 15cm. When collecting the soil for the last time, put your hands on both sides of the leek ridge respectively, and collect the soil on both sides to the middle and upper parts of the leek plants at the same time, and cultivate them as high as possible. In the future, leaves will be released to increase production, and no soil will be cultivated.

Timely harvest

The chives covered by the "beginning of spring" arch usually take 40-50 days to harvest. Leek is usually harvested at 50-75 cm. Leave stubble after each cutting 1-2 cm. In those days, new leeks were generally harvested with 1-2 knives, and they were generally not harvested again.

8. Post-harvest management

Don't water leeks before "fright", especially before the Spring Festival, in case leek roots freeze to death. You can leave the soil to keep warm, or you can take it out and cover it with broken grass and film to keep warm. After the "shock", the soil will be cultivated.

Remove the cold-proof materials, hoe the border surface while wet, apply 30,000 Jin of soil miscellaneous fertilizer per mu, temporarily stop watering, and irrigate along the leek ridge to prevent the damage of leek maggots, so that leeks can grow safely and slowly and raise roots. The cultivation management of leek in greenhouse is basically the same as that in small arch shed, that is, the seedling raising and planting time are the same, but the management is earlier than that in small arch shed.

Locking time165438+1at the beginning of October, you can harvest on the first day of the New Year. The disease of leek cultivation in greenhouse is more serious than that in small arch shed, so it is necessary to strengthen the management of water and fertilizer, pay attention to moisture drainage and fight fungicides in time to prevent disease.