The yield and quality of garlic are one of the plants most closely related to the sowing period. The planting time can be divided into spring sowing and autumn sowing according to the season. In actual planting, whether it is spring sowing or autumn sowing, both It depends on the local climate and environmental conditions, and is also directly related to the characteristics of the variety. Let's talk about how to determine the planting time of garlic.

1. The relationship between sowing date and yield

To determine the sowing date, we first need to understand what is the relationship between sowing date and yield? In production, if the sowing period is appropriate, plant growth can be promoted, the scale buds will be differentiated well, and the number of garlic cloves will basically maintain the characteristics of the original variety. At the same time, due to the sufficient growth period, the scale buds will also develop better; if the sowing period is too late, It will cause the growth period to be shortened, which will inevitably affect the growth of the plant. Whether it is the number of scale bud differentiation, the number of garlic cloves or the weight of garlic cloves, they will be reduced to varying degrees, resulting in a reduction in yield and quality.

Some studies have found that the number of garlic cloves tends to increase if sowing is done early, but the weight of garlic is generally not affected, while the yield of garlic sprouts will be significantly increased. Therefore, in garlic sprout-producing areas, early sowing is often adopted. method to increase the yield of garlic sprouts.

2. Determination of garlic cultivation season and sowing period

1. Determination of garlic cultivation season

Garlic cultivation season is divided into autumn sowing and spring sowing. It is said that the growth period of autumn sowing is longer, and the yield and quality are significantly higher than that of spring sowing. But which season to adopt depends mainly on the local climate conditions. In terms of latitude, 35° to 38° north latitude is the watershed. In this interval, either spring sowing or autumn sowing can be done; in the south south of 35° north latitude In the region, due to the mild climate, garlic seedlings can safely overwinter in the open field, which is more suitable for autumn sowing. In the northern areas north of 38° north latitude, winter is severely cold, and seedlings cannot naturally survive the winter in the open field. Autumn sowing is prone to frost damage, so sowing in early spring is appropriate.

2. Determination of the sowing time of autumn sowing garlic

The sowing time of autumn sowing garlic must be strictly controlled, because sowing too early or too late will have an adverse effect on the growth of garlic. Not only does it affect the emergence of seedlings too early, but it also consumes a lot of nutrients due to vigorous growth before overwintering, which is extremely detrimental to overwintering; sowing too late will weaken the growth potential and greatly reduce the ability to withstand cold weather, and a large number of dead seedlings will appear during the overwintering period.

When is the most reasonable time to plant garlic? In order to ensure that the garlic seedlings can successfully survive the winter, the suitable temperature during the sowing period is 20℃~22℃. In northern areas, there must be at least 35~40 days of effective growth period before overwintering. The seedlings can grow to 4~5 days. leaves, because this is the time when the plant's cold resistance is strongest; the Yangtze River Basin ensures a 60 to 75-day growth period before overwintering, and the seedlings can grow to 5 to 7 leaves.

When the average daily temperature is below 7°C, garlic will stop growing and developing. Based on this characteristic of garlic and the number of necessary growing days before overwintering, we can backtrack the sowing time. Generally, in normal years, the suitable sowing period in the northern region is mid-September, and the suitable sowing period in the Yangtze River Basin is from late September to mid-October.

Garlic covered with mulch sown in autumn has strong growth potential, so it can be sown a week or so later. If sown too early, the ground temperature will be high, the seedlings will emerge slowly, and the seedlings will easily burn.

3. Determination of the sowing period for spring sown garlic

The growth period of spring sown garlic seedlings is significantly shortened, so within the appropriate sowing period, early sowing can extend the growth period. The general standard for sowing is that when the ground temperature reaches 3~6℃, the land can be prepared for sowing, because garlic can germinate when the temperature reaches 3~5℃.

Whether garlic should be sown in spring or autumn, we determine whether it can survive the winter successfully in open field cultivation. Since the quality of garlic sown in spring is lower, we can also ensure it by changing the living environment of garlic, such as using facility cultivation. Garlic survives the winter smoothly, so that areas sown in spring can also be sown in autumn.