The planting time of the latest spinach

According to the different planting time, spinach can be divided into four types: autumn spinach, overwintering spinach, spring spinach and summer spinach, and because of different varieties, the sensitivity to sunshine length is also different. after the completion of plant stage development, it can bolt and blossom and complete its reproductive growth.

Spinach planting time

1. Planting time of autumn spinach

Autumn spinach is generally sown from August to September and can be harvested in batches 30-50 days after sowing. It is appropriate to choose early-maturing varieties with high heat tolerance and fast growth, such as Lutougu, Huacheng No. 1, Guangdong round leaves, spring and autumn leaves and so on.

2. Planting time of overwintering spinach

Overwintering spinach is usually sown from mid-October to early November and harvested in batches before and after the Spring Festival. it is appropriate to select middle and late maturing varieties with strong winter, late bolting and strong cold tolerance, such as round leaf, late round leaf, Huaye 1, Liaoning round leaf, and so on.

3. Planting time of spring spinach

Sowing can begin when the temperature rises above 5 °C after the beginning of spring. March is the suitable time for sowing and harvested 30-50 days after sowing. Varieties should choose late round leaves with late bolting and hypertrophic leaves, large leaves in spring and autumn, round leaves in Shenyang, round leaves in Liaoning and so on.

4. Planting time of summer spinach

Summer spinach is often sown in stages from May to July and harvested one after another from late June to mid-September. Huabo No. 1 with strong heat resistance, rapid growth and not easy bolting should be selected, such as Huabo No. 1, big leaves in spring and autumn, Guangdong round leaves and so on.

Prepare the land for border formation

Choose loose and fertile, water and fertilizer conservation, good drainage and irrigation conditions, slightly acidic loam is better, PH value 5.5-7. When preparing the soil, 4000 kg of rotten organic fertilizer and 40 kg of superphosphate should be applied per mu, which should be high in winter and spring and flat in summer and autumn, with a width of 1.2-1.5m.

Sowing and raising seedlings

Broadcasting is generally used. Soak the seeds in water for 12 hours one week before sowing in summer and autumn, then put them in the well or in the refrigerator or freezer around 4OC for 24 hours, then germinate under the condition of 20-25OC, and sow the seeds after 3-5 days. Dry or wet seeds can be sowed in winter and spring. Sow 3-3.5 kg per mu.

After pouring the bottom water on the border, sow the seeds, gently rake the topsoil with a tooth rake, sow the seeds into the soil, and cover the border with a layer of plant ash.

After sowing in summer and autumn, it is necessary to cover with straw or use a small arch shed to cover the sunshade net to prevent high temperature and rainstorm erosion. Often keep the soil warm and moist, 6-7 days can be full of seedlings, winter sowing temperature is on the low side, then cover the border with plastic film or sunshade net to promote seedling emergence, and remove after emergence.