The planting method of spinach

Spinach-raising seedlings

The lateral root of spinach is underdeveloped, not resistant to transplanting, and is usually direct seeded. Seeds can generally be preserved for 3 to 5 years, and seeds with 1 to 2 years have stronger germination ability. It can germinate when the temperature is more than 4 ℃, the optimum temperature for germination is 1.5 ~ 20 ℃, the germination rate decreases when the temperature is above 3.5 ℃, and the germination rate of dried seeds is slow.

① soaked the seeds in 0.1% potassium permanganate solution for about 15 minutes, then soaked them in water about 25 ℃ for 2 hours, and then sowed the seeds in a cool place until the seed surface was slightly dry.

At high temperature, seed germination can be accelerated after soaking, that is, wrapped in wet cloth (or paper towels) and placed under the condition of about 1.5-20 ℃, most of the seeds will be sown after exposure to white.

After watering the ② basin soil, sow the seeds on the soil surface, covering about 1cm to 2cm, slightly compacted. Germinate for about 1 week. Before germination, if the topsoil is dry, it can be watered by spray. The growth of seedlings is slow, and the growth rate begins to accelerate after 2 true leaves, which is usually watered once every 4 days to keep the soil moist.

If the density of ③ seedling is higher, it can be sprayed with dilute mature organic fertilizer once when the seedling is weak.

Spinach-Daily Management

① from 4 to 5 true leaves, the leaves grow vigorously, according to the growth situation can be sprayed with mature organic fertilizer (need nitrogen, phosphorus, potassium complete fertilizer, of which potassium, nitrogen fertilizer is more) to promote growth.

② is not resistant to waterlogging, the growing period needs sufficient water, avoid drought, generally every 1-2 days watering, high temperature according to the need to water early and late, in order to keep the soil moist.

③ 4 leaves 5 true leaf time seedlings, usually pull out the larger seedlings, the smaller seedlings to continue to grow, after harvest, apply mature organic fertilizer once.

Note: thin fertilizer should be applied in the early stage of growth and high temperature, and the concentration can be increased appropriately in the later stage of growth and low temperature.

④ is not resistant to high temperature and has strong cold tolerance. The suitable temperature for growth is 1.5 ~ 25 ℃. It can still grow when the temperature is above O ℃, but the growth is slow. Spinach seedlings with 4-6 true leaves have the strongest cold tolerance, which can survive the winter safely in the open field at about 10 ℃, and can endure short-term low temperature of 40 ~ 30C.

⑤ likes sufficient light but is not resistant to exposure, and should pay attention to shading. It is easy to blossom when the light time is more than 12 hours every day, and the growing period is short and there are fewer diseases and insect pests.

Spinach-harvesting

The plant can be harvested and eaten when 4 or 5 true leaves are harvested, and the height should not exceed 30 cm.

Spinach-nutritional value

Rich in vitamins and minerals, known as the "treasure house of nutrition", it is a high-quality source of magnesium, iron, potassium, calcium, vitamin An and vitamin C. it is also rich in phosphorus, zinc, pantothenic acid and vitamin B6, and contains insulin-like substances. can keep blood sugar stable. It contains a lot of oxalate, and eating too much may be harmful to your health.

(article / vegetable bar editor: caiba_org)