How to grow spring cabbage seedlings? Key technical points explained in detail
Vegetables are an indispensable food in many people's daily lives, and cabbage is also very popular with many people. As a spring vegetable, cabbage has a very large planting area in China. When planting cabbage in spring, because the temperature is still relatively low, the seedling-growing work is very important. So how should spring cabbage be grown from seed? Today, the editor brings you the seedling-growing techniques for spring cabbage. Let's take a look together below!
1. Choose superior varieties
When growing cabbage seedlings in spring, we first need to select good varieties. As just mentioned, the temperature in spring is still relatively low, and late spring cold spells are prone to occur. Therefore, when selecting varieties, we should first focus on seeds with strong cold resistance and strong disease resistance. For example, Chunqiang, Zhonggan No. 21, etc. These varieties all have the advantages of early maturity and high yield. They are very suitable for planting in spring, and choosing high-quality varieties is also the key to ensuring the success of spring cabbage seedling growing, so everyone should pay close attention to this.
2. Seedbed preparation
After selecting the varieties, we need to prepare the seedbed. The cabbage seedling bed should have sufficient fertility, and the previous crop should not be cabbage, other cabbage-family vegetables, or similar vegetables. New garden soil can be used for growing seedlings, and sufficient base fertilizer should also be applied in the seedling bed. The base fertilizer should mainly be decomposed farmyard manure, combined with an appropriate amount of compound fertilizer. Inorganic fertilizer should be evenly broadcast on the soil and then deeply plowed and raked level to improve soil fertility. If using a sunny seedbed for seedling growing, then some plastic film should be spread over the seedbed, and sowing should be carried out after about half a month when the ground temperature gradually rises.
3. Sow at the right time
We should determine the sowing time according to the planting region. For example, when planting in North China, the best sowing time is from December to January of the following year. Usually, sunlight greenhouses and improved sunny seedbeds are mainly used for seedling growing, and these seedling-growing methods are very beneficial to the growth of cabbage seedlings. Then the planting density should be determined according to the variety. If it is an early-maturing variety, then about 4,500 plants should be planted per mu, while for medium-maturing varieties, the number should be reduced by about 500 plants. Cabbage seeds generally do not need to be pre-germinated and can be directly sown as dry seeds. However, the seedling bed should be watered with sufficient bottom water, the seeds should be evenly broadcast, and after sowing, a layer of fine soil should be covered to preserve moisture, avoiding water shortage and cracking in the seedling bed.
4. Seedbed management
Before emergence, the temperature should be maintained at about 20 degrees, and seedlings generally emerge about 5 days after sowing. After emergence, attention should be paid to wind protection, and then the temperature should be lowered to about 15 degrees. If the seedlings grow too densely, then thinning should be done to avoid excessive seedling growth. Then when the seedlings grow to about 3 true leaves, they should be transplanted again, and the temperature of the transplanting bed should be kept within 10-20 degrees. Then before the seedlings are planted in March, low-temperature hardening should be carried out for the seedlings. Ventilation can be appropriately increased to let the seedlings adapt in advance to the environment of the field where they will be planted, promote seedling recovery, and improve the survival rate of the seedlings.
The above is a brief introduction to spring cabbage seedling-growing techniques. That is all for today's introduction. This article is for reference only. Friends who want to learn more related information, please continue to follow us!