Key Points and Detailed Methods of Scallion Seedling Cultivation Techniques
Scallions are one of the common vegetables in our daily lives and are widely grown across the country. However, many growers currently buy seedlings to plant themselves and are still somewhat unfamiliar with scallion seedling cultivation techniques, which makes the planting cost relatively high and squeezes profits. Now let's take a look at scallion seedling cultivation techniques together.
1. Site Selection and Land Preparation
A plot that is flat, well-ventilated and sunny, close to a water source, and with fertile, loose soil should be chosen as the seedling bed. Continuous cropping must be avoided, and preventive measures against pests and diseases should also be taken. During land preparation, 15-20 kg of potassium sulfate compound fertilizer per mu can be applied as base fertilizer to provide the nutrients needed for seed germination and seedling growth.
2. Selection and Germination Promotion
There are many varieties of scallions. When planting, a variety suitable for the local area should be chosen according to local climate, soil, and other conditions. It is recommended to choose varieties with good cold resistance, long white stalks, lodging resistance, high and stable yield, and good quality. After selecting the seeds, when preparing to sow, in order to ensure the seed germination rate, the seeds should be soaked and pre-germinated before sowing. First soak the planting seeds in cold water for 8-10, then remove them and wrap them in a wet towel, place them in a warm water environment of 15-20 degrees, open and rinse them with clean water once a day, and after about a week, when the radicle emerges, they can be sown.
3. Sowing Time and Method
Scallions have relatively strict requirements for sowing time. Generally, sowing is done in September-October of the previous year. If sowing is too early, it will lead to too many seedlings before winter, and they will easily bolt in the following spring; if sowing is too late, the seedlings will be thin and weak in winter and are likely to freeze to death during overwintering. When sowing, in order to make the seedlings grow uniformly, it is best to use the drilling method. On the seedling bed, open shallow furrows at a row spacing of 10-15 cm, water, and then sow. Generally, about 350-400 grams of seed are used per mu.
4. Seedling Stage Management
From sowing until emergence, the field should be watered frequently to keep it moist, so as to prevent the soil from crusting and making it difficult for seedlings to emerge. After the young shoots emerge, water once. When the cotyledons straighten and the root system is firmly established, water once or twice more. When watering, the amount of water should be controlled and should not be too much, so as to avoid excessive seedling growth. When watering, cultivation and weeding can be combined to promote strong seedling growth. Before overwintering, irrigate once with freezing water and apply one topdressing, which can increase soil temperature and ensure the seedlings overwinter safely. In spring, when the temperature rises and the seedlings turn green, water once. After that, the seedlings enter the peak growth period, so fertilizer and water management and field management should be strengthened, and thinning and final thinning should be carried out.
The above is an introduction to scallion seedling cultivation techniques. I hope it can help you. If you want to learn more related knowledge, please follow us.