How to grow leeks?

Leeks are perennial vegetables that can be sown directly or transplanted as seedlings, and most of them are transplanted as seedlings. Leeks like cool climates, are resistant to low temperatures and frost, and the above-ground parts can tolerate low temperatures of -4 to -5°C. The suitable temperature for seed germination is 15-18°C, and the suitable temperature for stem and leaf growth is 12-24°C.

The sowing period of leeks can be either spring sowing or autumn sowing in the south (April to October), spring sowing in the north, usually in April in North China, and from late April to May in Northeast China. The problem of uneven emergence often occurs in leek seedling cultivation. In order to improve the germination rate of seeds, new seeds should be sown, and seed soaking can be used to accelerate germination (seed soaking for about 24 hours, at a temperature of 15 to 20°C, after 2 to 3 days Accelerate germination and sow when the seeds turn white). The seeding rate is 6 to 7.5 kg/ha. After sowing, the bed soil should be kept moist. The seedlings will emerge in about 7 to 8 days. Subsequent management requires timely thinning and removal of weeds to ensure that the seedlings have a certain nutritional area. If you sow in the rainy season in the south and the bed soil is relatively humid, dry seeds can be sown without soaking and germination. The appropriate period for planting is when the seedlings are 15 to 20 centimeters tall.

Appendix Thousand-seed weight and lifespan of main vegetable seeds

Thousand-seed weight and lifespan of main vegetable seeds