When is it better to grow spinach in the open field in the north?

Spinach is one of the most cold-tolerant vegetables in the green leafy vegetables, which can overwinter in the open field in the south of the Yangtze River Basin, and can safely overwinter in the open field in areas of about -10 degrees, and can overwinter in the open field with wind barriers and ground cover in North China, Northeast and Northwest. The cold tolerance of spinach is closely related to plant growth and development and seedling age.

Spring spinach can be sown when the temperature rises to more than 5 °C after the beginning of spring, March is the appropriate period for sowing, summer spinach is sown in stages from May to July, autumn spinach is sown in August to September, and overwintering spinach is sown in mid-October to early November. The spinach cultivation techniques are as follows:

Prepare the land for furrowing. Choose loose and fertile, water and fertilizer retention, good drainage and irrigation conditions, slightly acidic loam with good pH value. 4000 kg of decomposed organic fertilizer per mu of land preparation, 40 kg of superphosphate, leveling fine, winter and spring should be done high furrow, summer and autumn should be done flat furrow, furrow width meter.

Sowing seeds and raising seedlings. Spinach plots are generally sown. Summer and autumn sowing is to soak the seeds in water for 12 hours one week before sowing, put them in a well or in a refrigerator or refrigerator at about 4 °C for 24 hours, and then promote germination at 20-25 °C, and sow seeds after 3-5 days of germination.

Dry or wet seeds can be sown in winter and spring. Kilograms of sowing per mu.

After pouring the bottom water on the furrow surface, sow the seeds, lightly rake the topsoil with a tooth rake, so that the seeds are sown into the soil, and cover the furrow surface with a layer of plant ash.

After sowing in summer and autumn, it should be covered with straw or covered with a small arch to prevent high temperature and heavy rain. Frequently keep the soil warm and moist, 6-7 days can be seedlings, winter sowing temperature is low, then cover the furrow with plastic film or shade net insulation to promote the emergence of seedlings, after the emergence of seedlings.

Field management. After the autumn spinach has real leaves, pour 1 time to clear the manure; After 2 true leaves, combined with seedlings, weeding, top dressing first light and then thick, and more decomposed manure was applied in the early stage; Top dressing 2-3 times during the peak growth period, 5-10 kg of urea per mu each time.

The soil remains moist after winter spinach planting. When there are 3-4 true leaves, properly control the water to facilitate overwintering. When there are 2-3 true leaves, the seedling spacing is 3-4 cm.

According to the seedling condition and weather, water and fertilizer were applied top-notch, and the feces and urine of ripe people were mainly decomposed. Frost and ice and snow weather should be covered with plastic film and shade nets for insulation, which can be covered with small arches. After the beginning of spring, choose a sunny day to apply well-rotted light manure water to prevent early sprouting.

Spring spinach should be covered with plastic film in the early stage of insulation, which can be directly covered on the furrow surface, and the film will be removed after the emergence of the film or changed to a small arch cover, and the small arch shed will be covered by day and night, and the rain cover will be covered by sunshine, so that the seedlings can see more light, refine more seedlings, and time seedlings. Top dressing fertilizer water, in the early stage, apply lightly and diligently with decomposed human and animal manure, and apply fast-acting nitrogen fertilizer in the later stage, especially 15 days before harvest.

After the emergence of summer spinach, it is still necessary to cover the shade net, cover the shade in the sun, cover it late and cover it early, so as to facilitate cooling and heat preservation. Watering at the seedling stage should be done in the morning or evening with small water and frequent watering. After 2-3 true leaves, apply two fast-acting nitrogen fertilizers. Water should be poured after each fertilization application to promote growth.

China Organic Agriculture Network.

This spinach is best sown in the spring, sown in the spring, and then harvested in the summer.

Spinach grown on northern land is best planted between March and May.

1. Spinach can be planted all year round, spring spinach can be sown when the temperature rises to more than 5 °C after the beginning of spring, March is the appropriate period for sowing, summer spinach is sown in stages from May to July, autumn spinach is sown in August and September, and overwintering spinach is sown in mid-October - early November.

2. Spinach is a cold-tolerant vegetable, the seeds can germinate at 4 o'clock, the most suitable is 15-20, the suitable temperature for vegetative growth is 15-20, the growth is poor above 25, and the aboveground part can withstand the low temperature of minus 6-8.

3. Spinach is a long-day crop, and the plant is easy to moss and flowering under high temperature and long-day conditions, and the requirements for sunshine intensity are not strict, and it can be intercropped with high-stem crops.

4. Spinach leaves have a large area, tender tissue, and high water requirements. Sufficient moisture, thick meat when growing vigorously, high yield, good quality. Under the conditions of high temperature, long sunshine and drought, vegetative growth is inhibited, reproductive growth is accelerated, and it is easy to extract moss from immaturity.

Spinach can also be planted now, in fact, spinach can be planted all year round as long as it is in autumn and after winter.

1.Spinach has a thicker root system and easily absorbs water. It has high requirements for soil, and usually uses high-quality soil with good drainage capacity.

2.Spinach is usually sown and the seeds should be soaked in water for 12 hours one week before planting.

3.Remember to sprinkle a layer of plant ash after sowing. Spinach grows relatively fast and usually germinates in about seven days after the seeds.

Spinach (spinaciaoleraceal.)Also known as Persian vegetables, red root vegetables, parrot vegetables, etc., it belongs to the genus Spinach in the Chenopinaceae family, an annual herbaceous plant. The plant can be up to 1 m tall, with conical, reddish-tingting, less white, halberd-shaped to ovate, bright green, entire-edged or with a few tooth-like lobes.

There are many types of spinach, which can be divided into two varieties, thorny and thornless, according to the seed form.

Hello Northern open-field overwintering spinach is generally grown between October and November. The sowing date should be selected when the average temperature of the day drops to 3-4 degrees. If sowing too early, the seeds germinate and emerge before winter, the seedlings are too small to overwinter, the sowing is too late, the soil has been frozen, the sowing quality is poor, the seedlings are uneven in the spring of the next year, and there is a lack of seedlings.

When there are 3-4 true leaves, properly control the water to facilitate overwintering. When there are 2-3 true leaves, the seedling spacing is 3-4 cm. According to the seedling condition and weather, water and fertilizer were applied top-notch, and the feces and urine of ripe people were mainly decomposed.

After 2-3 true leaves, apply two fast-acting nitrogen fertilizers. Water should be poured after each fertilization application to promote growth. x0d x0a China Organic Agriculture Network.

Spinach is a vegetable rich in iron, which can be divided into overwintering spinach and spring spinach, which is widely cultivated in China. Because the harvesting of overwintering spinach is in the off-season of early spring, the demand in the market is relatively large, so the area of planting overwintering spinach is wider. ThatWhen is the northern open-field overwintering spinach generally planted?

How to grow? Let's find out.

1. When is the overwintering spinach planted in the open field in the north?

The northern open field wintering spinach is generally in late August to start the selection and sowing, the temperature in the north is low, sowing too late is easy to encounter low temperature in the seedling stage, the liquid eggplant gas returns, frost damage, affect the growth of spinach, and reduce yield.

2. How to grow spinach in the open field in the north?

1. Choose the right variety

Choose varieties with good cold tolerance, excellent quality and strong yield, such as Hua Pine No. 1, Liaoning Round Leaf Spinach, Shuangcheng Sharp Leaf Spinach, Round Leaf Spinach, Zhucheng Sharp Leaf Spinach, etc., so that the planting yield is higher.

2. Deep ploughing and land preparation

Planting overwintering spinach in the open field has high requirements for soil, choose loose and fertile, good air permeability, strong drainage of neutral or slightly acidic soil, and apply 5000 kg of decomposed organic fertilizer and 25 kg of ternary compound fertilizer per mu after deep ploughing, so as to make a flat furrow of width.

3. Soaking and germination treatment

After selecting the seeds, soak them in warm water for half a day 24 hours before sowing, and then take out the soaked seeds to dry and prepare for sowing.

4. Sowing

The processed spinach seeds are planted in the soil by strip sowing or spreading, covered with thin soil, and then filled with compact. Generally, 8-12 catties of seeds per mu, the sowing amount can be adjusted according to the actual situation, and the temperature in the northern region is low, so the number of sowing can be appropriately increased.

5. Cultivating management

When the overwintering spinach seedlings grow 1-2 true leaves, they should be watered appropriately, and the soil should be kept moist during the period, but no water should appear. If the seedlings are weak, top dressing can be carried out. When 2-3 true leaves are left, the seedlings should be spaced and the plant spacing should be kept at about 6cm.

In the later stage, water control, cultivation and other methods can be adopted to promote the development of spinach seedlings roots, so that the leaves can become thicker and wintering smoothly.

Freezing water can be poured once before freezing, usually in November, to keep the soil temperature stable. If there is heavy snow and bad weather during the long period of returning to Qingwang, the snow should be removed in time to avoid root rot.

6. Suitable for harvesting

When the overwintering spinach grows to a height of more than 10cm, it can be harvested according to its growth situation and market demand, and the harvest is best carried out on a sunny day to avoid excessive water contamination of the leaves and affect its commerciality.

To sum up, the cultivation of spinach in the open field in the north not only needs to master the right time, but also needs to master certain planting techniques, so as to ensure its yield and bring benefits to growers.

Summary. Dear, it is a pleasure to serve you, the method and time of planting spinach in the open air are as follows.

1. Sowing time: Seedling overwintering ability, harvest time and yield are closely related to the early and late sowing. Spinach should have a growth period of 40 to 60 days before overwintering, grow 4 6 true leaves, and have strong cold resistance. Northern spinach is generally sown from late August to early to mid-September.

Second, the selection of varieties for overwintering spinach should be selected with strong cold resistance, good quality, and great yield increase potential. Such as Zhucheng sharp-leaf spinach, Shuangcheng sharp-leaf spinach, etc. 3. Prepare the land to be leeward and sunny, loose and fertile, with good drainage conditions, neutral or slightly acidic soil.

After cleaning the garden, 5,000 kg of high-quality decomposed organic fertilizer and 25 kg of ternary compound fertilizer were applied per mu, and more than 25 cm of deep ploughing were cultivated, and then made into a flat furrow with a width of meters. Fourth, sowing spinach seeds germinate slowly, in order to shorten the emergence period, soak the seeds in 20 warm water for 12 hours the day before sowing, and then take out the seeds and dry them for a while.

How and when to grow spinach in the open air.

Dear, very high calendar bending Xing at your service, open-air spinach planting methods and time are as follows.

1. Sowing time: Seedling overwintering ability, harvest time and yield are closely related to the early and late sowing. Spinach should have a growth period of 40 to 60 days before overwintering, grow 4 6 true leaves, and have strong cold resistance. Northern spinach is generally sown from late August to early to mid-September.

Second, the selection of varieties for overwintering spinach should be selected with strong cold resistance, good quality, and great yield increase potential. Such as Zhucheng sharp-leaf spinach, Shuangcheng sharp-leaf spinach, etc. 3. The land preparation is leeward and sunny, loose and fertile, with good drainage conditions, and neutral or slightly acidic soil.

After cleaning the garden, 5,000 kg of high-quality decomposed organic fertilizer and 25 kg of ternary compound fertilizer were applied per mu, and more than 25 cm of deep ploughing were cultivated, and then made into a flat furrow with a width of meters. Fourth, sowing spinach limb seeds germinate slowly, in order to shorten the emergence period, soak the seeds in 20 warm water for 12 hours a day before sowing, and then take out the seeds and dry them for a while before sowing.

There are two kinds of sowing methods: dry sowing and wet sowing, and when the soil moisture is not good, the wet sowing method can be used. There are two types of sowing methods: spreading and stripping. Spreading is to sprinkle the seeds evenly on the furrow surface, covering * thickness 3 cm, strip sowing is on the furrow surface according to the row spacing of 10 15 cm to sow seeds, cover * 3 cm, and suppress after sowing.

The amount of seeds used per 667 square meters is 4 6 kg, and the sowing amount can be appropriately increased in severe cold areas.

Spinach planting month and season.

Spinach can be grown all year round. It is suitable for planting in March-April, June-August, and November, which means that it can be planted in November at the latest. When planting, sowing is usually employed.

Spinach origin and planting month.

Common spinach production areas are Henan, Jiangsu, and Jiangxi.

Henan spinach. Henan spinach is generally planted in April and generally matures in July. Spinach grows rapidly in this area, and there are many in the market for celebration.

Jiangsu spinach. Spinach in Jiangsu is generally planted in March and generally ripens in July-August. The spinach in this place grows at a moderate rate, and the spinach itself is relatively soft, which is soft and rotten when cooked.

Jiangxi spinach. Spinach in Jiangxi is generally planted in May and generally matures from July to September. This place is rich in spinach, green and healthy and pollution-free.

Spinach varieties and planting months.

Common spinach varieties are prickly, thornless, and heat-tolerant.

There is spiny spinach. Thorny spinach is usually planted in April and usually ripens in June-July. This variety of spinach has the characteristics of freshness, high yield, storage and transportation, and is suitable for import and export.

Thornless spinach. Thornless spinach is generally grown in March-May and generally ripens in July-September. This variety of spinach is a common spinach with a thick plant and a delicate taste.

Heat-resistant spinach. Thorny spinach is generally planted in May and generally matures in June-August. This variety of spinach has the characteristics of high trace elements and rich tannin, and has a wide audience.