Scientific planting technology of spinach how to grow spinach

Spinach is a very common vegetable in our life, and it can be seen everywhere in both markets and supermarkets. Spinach has high nutritional value, which can not only supplement iron for human health, but also prevent and treat iron deficiency anemia. However, many people do not know much about how to grow spinach, so let the editor introduce it to you in detail.

Scientific planting technology of spinach

1. When selecting seeds, pay attention to the shelf life. The seeds beyond the shelf life have a low sprouting rate. According to the temperature, you can choose varieties that are heat-resistant or cold-tolerant. In central China, spinach can be sown in October weather now, because spinach is very hardy, and the snow in winter is not bad.

2. Prepare flowerpots, soil and ordinary garden soil. A small amount of coarse sand or coal ash can be added to increase the air permeability of the soil without stagnant water or consolidation. As a result, the root system of spinach is blocked and the growth is affected.

3. After sowing, cover a thin layer of soil, then pour water thoroughly and put it in a ventilated place. Waiting to sprout. Generally, it can sprout in about a week. When watering, don't water too much to wash the seeds away.

4. After germination, it can be fertilized when it grows to more than two leaves. Must be rotten organic fertilizer. Rotten chicken manure, nutritious soil can be. Apply a small amount of fertilizer at a time, and apply thin fertilizer frequently.

5, generally easy to suffer from diseases and insect pests are leaf miner, or downy mildew, more exposure to the sun, to maintain ventilation is the key, many diseases and insect pests can be used to spray trichlorfon and other drugs to eliminate.

6. When there is frost in autumn and winter, or when it snows, you can cover it with some hay or film to keep warm, and open the film to them to bask in the sun on a sunny day.

How to grow spinach

1. Sowing and raising seedlings

The planting method of spinach is to spread. Before sowing, soak the seeds in water for 12 hours, soak them in the refrigerator for 24 hours, remove them and put them in the environment of 20-25 degrees Celsius to accelerate germination. They can germinate in about 3-5 days, and sow seeds after germination. In order to ensure the yield, sowing about 3.5kg per mu, watering once after sowing, covering the soil with 2-3cm, keeping the soil moist, the seedlings can be ready in about a week.

2. Field management

Spinach has strong growth power, and it can grow on its own as long as it emerges, but in order to ensure its yield, it is necessary to carry out inter-seedling when it grows true leaves, which can be weeded in time at the same time. Grow 3-4 true leaves can be irrigated once thin fertilizer water, fertilization should not be too thick, lest excessive fertility lead to root burning death.

The time of spinach planting

1. Spinach can be planted all the year round. Because of its different planting time, spinach can be divided into four varieties: spring, summer, autumn and winter. The four varieties have different light intensity and duration.

2. The planting time of spring spinach is in early spring March. When the temperature rises to more than 5 degrees after the beginning of spring, it can be sown and harvested one to two months after sowing.

3. Summer spinach has strong heat tolerance and rapid growth. It can be sowed in 5-7 and harvested in June-September.

4. Autumn spinach has strong heat tolerance, which is generally sown from August to September and can be harvested from September to October.

5. Overwintering spinach has strong cold tolerance, usually sowing from October to November, and harvested before and after the Spring Festival.

Planting conditions of spinach

1. Temperature

Spinach is a cold-tolerant vegetable, the seeds can germinate at 4 ℃, the optimum temperature for vegetative growth is 15-20 ℃, the growth is poor above 25 ℃, and the aboveground can withstand the low temperature of minus 6-8 ℃.

2. Sunshine

Spinach is a long-day crop, which is easy to sprout and blossom under the condition of high temperature and long sunshine, and can be intercropped with high-stem crops.

3. Moisture

Spinach has large leaf area, tender tissue and high requirement for moisture. It has plenty of water, thick meat when growing vigorously, high yield and good quality. Under the conditions of high temperature and long sunshine and drought, the vegetative growth is inhibited, the reproductive growth is accelerated, and the immature bolting is easy.

4. Soil

Spinach has strong adaptability to soil, but it is still better to preserve water and fertility in fertile soil. Spinach is not acid-resistant, and the suitable pH is 7.38.2. Spinach is a leafy vegetable, which needs more nitrogen fertilizer and appropriate phosphorus and potassium fertilizer.

Spinach is a vegetable that can be eaten all the year round, so spinach cultivation can be carried out all the year round. The method of growing spinach is not very difficult, and it is very adaptable to the soil, so your favorite friends can try it yourself.