Apply 4-5 cubic meters of rotted farmyard manure per mu of land, deep ploughing and deep tilling, leveling and making beds, with a width of 1.2-1.5m and a length of 7-10m; sow seeds after soaking, and sow about 6-8kg per mu of land; after leeks come out of the seedling, apply fertilizers and water in moderation, and do a good job of weed and pest control. After sowing the seeds can usually be germinated after about 7-15 days.

I. Cultivation technology of leek seed planting

1, land preparation and sowing

(1) land preparation

Deep ploughing and deep tilling before the winter, pouring freezing water, and applying 4-5 cubic meters of rotted farmyard manure per acre, and then using 2kg of 5% phoxim granules per acre mixed with 10-15kg of fine soil. Spreading, leveling and making beds, bed width 1.2-1.5m, length 7-10m.

(2) Sowing

Select disease-free, full leek seeds, soak the seeds and use wet sowing method for sowing, sowing 6-8kg of seeds per acre. After sowing, the first time covered with a thin layer of soil, and then covered with a second layer of soil after the return of moisture, covering the total thickness of the soil is about 2cm, and at the same time can be covered with a layer of mulch on the top, and wait until the leeks are out of the seedling after the withdrawal.

(3) artificial management

In the sowing of seedlings before the use of 0.15kg of 33% herbicidal emulsifiable concentrate diluted with water and then surface spraying; leek seedlings to grow to 5cm or so, watering, and timely loosening of the soil; leek seedlings to grow to 10cm, combined with watering, the application of 2-3 times the rotted farmyard fertilizer, and per mu of water with the application of 0.5-1kg of crystalline trichlorfon; leeks After growing to 15cm, control the watering amount. Wait until June to July (plant height grows to about 20cm), transplanting.

2, field management

(1) land preparation

choose fertile soil, good drainage performance of the place, each acre of land to apply 4-5 cubic meters of rotted farmyard manure, leveling for the bed, bed width 2-3m, every 3 beds group.

(2) planting

Before transplanting, cut off the end of the fibrous roots of leek seedlings, and then according to the row spacing 13-20cm, hole spacing 10-15cm for planting, each hole planted 6-8 leek seedlings. When planting, it is necessary to pay attention to the best not to bury the leaf sheaths, planting after treading, and timely watering.

(3) water and fertilizer

When the leek has new leaves grow out, each mu of watering with the application of 500-1000kg of dilute human feces or 7.5-10kg of urea; into the autumn, each mu of land to apply 1,000-2,000kg of rotting organic fertilizers, or every 10-15 days, each time each mu of land to apply 10-13kg of ammonium sulphate; the new seedlings. After emerging from the soil, apply 500-1000kg of dilute human feces per mu, or apply 3-5kg of ammonium sulfate; when leek seedlings grow to 12-15cm, flush 1000-1500kg of human feces per mu with water; when leek seedlings are 15-18cm high, water them once.

(4) harvest management

leek every harvest will be a fertilizer. The specific method is to apply 30kg of urea per mu 2-3 days after harvest.

Second, leek seeds can germinate a few days after planting

1, leek seeds can germinate about 7-15 days after planting. The specific time depends on the temperature, whether the pre-sowing treatment is appropriate.

2, pre-sowing immersion can accelerate seeding, improve the germination rate of seeds, the specific method is: 2-3 days of sunshine before sowing, sunshine with 40 ℃ of warm water soaked seeds for about 24 hours, fish out of the wash drained, wrapped in a wet cloth into the 20-25 ℃ environment germination for about 3 days, 80% of the seeds can be sown when the whiteness.

3, after sowing, to ensure that the soil is moist, the ground temperature is about 15-20 ℃, can reduce the time of seed germination.