1、 Suitable temperature for growth

The suitable temperature for the growth of leek depends on the growth stage. The temperature required for different growth stages is also different. Among them, it is best to control the temperature above 12 degrees and between 15-18 degrees during seed germination. Too low will reduce the germination rate. The suitable temperature for seedling growth stage is between 12-18 degrees. When the seedlings grow to the growth stage, the appropriate temperature is between 15-28 degrees. Do not be too high or too low, otherwise it will affect the growth

2、 Growth cycle

1. Germination period: from seed germination to the first true leaf growing from the bud, this stage is the germination period, and the whole excavation process takes about 10 days. However, the time required for different varieties is not exactly the same. Some varieties germinate very slowly, and the emergence period is about 12-15 days, or even longer

2. Seedling stage: from the first true leaf to the ability of ramet is the seedling stage. It takes 70-80 days for general varieties and 60 days for fast-growing varieties. At this growth stage, the aboveground part grows relatively slowly, mainly root growth. When the seedling grows to 18-20 cm, it can be set

3. Vigorous growth period: the vigorous growth period starts from the ability of ramets, and ramets begin to occur. The specific number of branches also depends on the variety. Among them, narrow leaf varieties are divided into four or five times, and wide leaf varieties are divided into two or three times a year. During this period, we should pay attention to the management of light and temperature