Sugar beet of Chenopodiaceae.
Origin: Mediterranean coast
Nutritional value: Porphyra head and root are tender, with less fiber, high sugar content and a small amount of inorganic salts. In medicine, it has the effect of treating vomiting and diarrhea and expelling parasites in the abdomen. And has that effect of generate blood.
How to eat: Wash and peel the laver head, shred it for cold salad or stir-fry, or cook it before eating. In western food, laver heads are mainly used as decorative materials for dishes.
1. sowing date: seedlings can be transplanted all year round, and they can be sown in batches from September to March of the following year for general high-yield cultivation.
2. seedbed; Choose loose and fertile plots with convenient irrigation and drainage as seedbeds. Seedbed in hot season should have rain and sun protection facilities; It is necessary to sow in warm days in cold season, and it is best to use transverse arch film or set up seedbeds in protected areas. After deep excavation, the ridge width is 1- 1.2m, the trench width is 40-50cm, and the trench depth is about 25cm. Spraying 5-6 kilograms of decomposed high-quality farmyard manure per square meter in the border, and adding 60-70 grams of calcium superphosphate and 100-200 grams of plant ash. Planing and stirring evenly, raking out the covering soil.
3. Sowing: Dry sowing method draws a shallow ditch with a depth of about 2 cm in the border according to the distance of 8- 10 cm, and then scatters, harrows, suppresses and waters. During wet sowing, water is poured on the soles of feet, and the seeds are sown evenly after water infiltration, and then the wet fine soil with a thickness of about 1.5 cm is covered. Generally, the seeds should be dried in the sun or soaked for about 2 hours before sowing.
4. Seedbed management: The seedling temperature should be kept at 15-20℃. Keep the bed soil dry and wet. Generally, water is poured once when the bed soil surface is dry. 1-2 true leaves should be sparse, and the spacing between seedlings should be 5-6 cm. When the seedlings have 4-5 true leaves, apply rare organic liquid fertilizer once and exercise the seedlings, and transplant and plant when there are about 6 true leaves.