First, spinach planting time
1, spinach can be planted all year round. Due to different planting time, it can be divided into four varieties: spring, summer, autumn and winter. It should be noted that these four varieties have different requirements for light intensity and light time.
2. Spring spinach is planted in early spring and March. It can be sown after the temperature rises above 5 degrees in spring, and it can be harvested one or two months after sowing.
3. Summer spinach has strong heat resistance and rapid growth. It can be sown in May-July and harvested in June-September.
4. Autumn spinach has strong heat resistance, which is usually sown in August-September and harvested in September 9- 10/October.
5. Winter spinach has strong cold resistance. Generally, it is sown in10-1month, and can be harvested around the Spring Festival.
Second, the spinach planting method
1. Seeding and seedling raising
Spinach is grown by spreading. Soak the seeds in water for 12 hours before sowing, then put them in the refrigerator for 24 hours, take them out and put them in an environment with a temperature of 20-25 degrees to promote germination. Spinach seeds can germinate in about 3-5 days, and can be planted after germination. In order to ensure the yield, sow about 3.5kg per mu, water once after sowing, cover the soil with 2-3cm, and keep the soil moist, and seedlings can emerge in about one week.
2. Field management
Spinach has strong growth ability. As long as it can germinate, it can grow on its own. However, in order to ensure the yield, it is necessary to carry out thinning when real leaves grow, and weeding can be carried out once during thinning; When the real leaves grow 3-4 pieces, they can be watered once with thin fertilizer, and the fertilizer should not be too thick to avoid burning the roots.
Third, matters needing attention in planting spinach
1. temperature
Spinach is a cold-tolerant vegetable, and its seeds can germinate at 4℃. The optimum temperature is 15-20℃, and the optimum temperature for vegetative growth is 15-20℃. Above 25℃, spinach will grow poorly. .
2. sunshine
Spinach is a crop with long sunshine. Although it is not strict with sunshine intensity, it is easy to germinate and grow under the condition of high temperature and long sunshine. It can be intercropped with tall crops, which can make full use of the soil.
Step 3: Moisture
Spinach leaves have large area, soft tissue and high water demand. When water is sufficient, spinach grows vigorously, with high yield and good quality.
4. Soil
Spinach has strong adaptability to soil, but it is better to keep water and fertilizer in fertile soil.