Key points of High-yield cultivation techniques of spinach in Open Spring

It is better to sow spring spinach in early spring. And after spinach harvest, we can sow other over-summer vegetables or corn, peanuts and other grain and oil crops to improve the multiple cropping index and increase the benefit per mu. The following editor will introduce to you the key points of high-yield cultivation of spring spinach.

Spinach

First, select superior varieties: spring spinach varieties with round leaves with late bolting, strong cold resistance, strong disease resistance and high yield should be selected.

2. Soil preparation and fertilization: spring spinach should be planted in plots where cruciferous vegetables or other field crops have not been planted in the previous crop. When the soil in early spring thaws, it will disperse as soon as it is touched. 2000 kg of mature circle fertilizer, 25 kg of urea and 10 kg of potash fertilizer shall be sprinkled per mu of land as base fertilizer, and then shallow ploughing, leveling the ground, making a flat bed, and preparing for sowing.

3. Seed treatment

The temperature of sowing spring spinach is still relatively low, so the method of seed soaking should be adopted. First, the spinach seeds are soaked in warm water for 5-6 hours, and then the spinach seeds are put in the temperature of 15 ℃-20 ℃ to accelerate germination. The seeds should be washed with warm water once a day, and they can sprout in 3-4 days and wait for sowing.

Fourth, sow seeds at the right time

When the 4-6 cm permafrost on the surface of the soil is thawed, it should be sown as early as possible, and it is better to sow spinach as soon as the average temperature rises to 4 ℃-5 ℃. The method of sowing spinach is often used, and the sowing amount per mu is 5-6 kg. When sowing in early spring, it is best to use falling water to sow seeds, first fill the bottom water, wait for the water in the field to seep through, sow spinach seeds, and then cover about 1 cm thick soil. Because there is a loose layer of soil covering the border, it can reduce water evaporation and heat preservation of the soil. Spinach seeds in a relatively warm, humid and well-ventilated environment can emerge earlier.

V. Field management

The soil moisture of spring spinach sown by this method is sufficient. Generally, the first water is when spinach seedlings grow 2-3 true leaves. From watering the second water, 15 kg of urea or 20 kg of nitrogen and potassium fertilizer are applied per mu with water. In the future, the spinach field will be watered according to the climate and soil moisture, and the principle is to keep the soil moist in the spinach field. The growth period of spring spinach is relatively short, in the case of lack of water and fertilizer, it is easier to bolt prematurely and reduce the yield and quality of spinach.

VI. Timely harvest

Spinach can be harvested about 40 days after sowing, the yield of spinach harvested too early is low, too late harvest is easy to cause spinach bolting phenomenon, reduce spinach commerciality, affect income, therefore, timely harvest should be achieved.