When can we plant cabbage at the latest?

Spinach has a shorter growth cycle and can be grown all year round. Planting can be done when the temperature reaches 5 or higher, and harvesting is possible about 40 days after planting in March. It is usually sown in May-July in summer, August-September in autumn, and October-November in winter.

Before sowing, germination should be carried out, soaking the seeds to be sown after germination, preparing the land, applying sufficient basal fertilizer to improve the fertility of the soil, and later management is also very important. Let's take a closer look.

Spinach planting time.

1.Planting time.

Spinach can be grown all year round, with a short growth cycle and a quick harvest. Sowing can be done when the spring temperature is above 5, usually sown in March in spring, and can be harvested after 40 days; In summer, sowing can be done in May-July; In autumn, it is sown in August and September, and the overwintering spinach can be sown in October and November, and it can be harvested around the Spring Festival. In short, seeds can be sown at the right temperature.

2.Fine-graining of the land.

Plough the land, choose a loose and fertile soil, good drainage section, apply 4000 kg of rotted organic fertilizer per mu, add 40 kg of superphosphate, mix soil and fertilizer, and finely prepare the land to make a field furrow. It is suitable for flat furrows in summer and autumn, and high furrows are suitable for winter and summer, and can be made of meter-wide furrows.

3.Sowing seeds and raising seedlings.

The seeds can be soaked in water about a week before sowing, fished out and cleaned after 12 hours, placed in the environment of 4 and waited for 24 hours, and then placed in the environment of 20-25 to promote germination, and can be sown after germination in 3-5 days. After watering, sow the seeds and cover them with fine soil. After sowing in summer and autumn, use a small arch shed, put on a shade net to avoid direct sunlight, and sowing in winter needs to be covered with plastic film for insulation and cold resistance, and the film can be removed after the seedlings emerge.

Spinach planting time.

4.Post-management.

Remove the weeds in time, properly spread the seedlings after 2 true leaves, and apply a well-rotted organic fertilizer. When topdressing, the concentration gradually increases, and light fertilizer is applied first. Water in time after fertilization.

Usually according to the climate conditions to water, rainy days in time to remove stagnant water. Winter planting should replenish water, do a good job of heat preservation measures, and avoid frostbite.

5.Control pests and diseases.

75% chlorothalonil can be used for downy mildew 600 times and 50% carbendazim 700 times for anthrax. Aphids can be sprayed with 50% anti-aphid 2000-3000 times, and leaf miners can be sprayed with 80% trichlorfon powder 1000 times.

6.Seed harvesting.

The plant can be harvested when it grows to more than 10 cm, and the spinach used to keep the seeds should be controlled in the water during the budding period, and the male plant can be pulled out after the male plant bears seeds.

Spinach is a kind of vegetable with obvious seasonal ratio in the previous planting, but later with the progress of planting technology and the research and development of varieties, it can basically be planted in four seasons, but it is best to sow in mid-March in spring, and the temperature change in summer is more obvious, so that the yield will be higher in batches, so the first batch is sown at the beginning of May, the second batch is sown at the end of June, and the third batch is sown at the beginning of July. In autumn, sowing can be carried out throughout the season, and in winter, sowing can only be carried out in November, otherwise it will freeze to death, so there is the most suitable time for planting every season, so be sure to grasp it. Spinach, also known as Persian cabbage, red root cabbage, parrot cabbage, etc., belongs to the genus Spinach in the Chenopinaceae family, and is an annual herbaceous plant.

The leaves are halberd-shaped to ovate, bright green, tender and juicy, slightly shiny, entire, or with a few tooth-like lobes.

It can be divided into four varieties: spring, summer, autumn and winter, and the intensity and duration of light are different for the four varieties. Spring spinach is planted in early spring in March, and can be sown when the temperature rises above 5 degrees Celsius after the beginning of spring, and can be harvested in one to two months after sowing. Summer spinach is heat-tolerant and fast-growing, sowing can be done in 5-7 months and harvested in June-September.

Autumn spinach is more heat-tolerant, generally sown in August-September, and can be harvested in September-October. Overwintering spinach is hardy and is usually sown in October-November and harvested around the Spring Festival.

When sowing, select seeds with full grains and no pests and diseases, rinse them first, and soak them to promote germination. The planting plot should be selected to be convenient for drainage and irrigation, and the soil is fertile, and the land should be prepared in advance and the base fertilizer should be applied. When planting, sprinkle the processed spinach seeds directly on the surface of the soil and cover them with thin soil, and the seedlings will emerge soon.

Growing conditions for spinach.

Temperature. Spinach is a cold-tolerant vegetable, the seeds can germinate at 4 o'clock, the most suitable is 15-20, the temperature suitable 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.

Sunshine. 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.

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

Soil. Spinach has strong adaptability to soil, but it is still better to have fertile soil with strong water retention and fertility, spinach is not acid tolerant, and the appropriate pH is. Spinach is a leafy vegetable that requires more nitrogen fertilizer and appropriate phosphorus and potassium fertilizers.

Spinach is divided into overwintering spinach, spring spinach, summer spinach, autumn spinach, overwintering spinach is sown around mid-to-early October, spring spinach is sown between early March and mid-April, summer spinach is planted in stages from May to July, and autumn spinach is sown from early August to mid-September.

1. Overwintering spinach

Generally, it is necessary to wait until mid to early October to early November before sowing, which is best sown when the temperature drops to about 18 degrees around mid-October, and the sowing time varies in different regions, generally the river basin is sown from late October to early November, harvested in the spring of the following year, sown in mid to late September in North China, and harvested from late March to late April.

2. Spring spinach

Spring spinach is most suitable for sowing between early March and mid-April, among which it is best to sow around mid-March, but the temperature in the north and south is different, generally the northeast is sown in April and May, harvested in May and June, sown in North China and Central China in 2 March, harvested in April and May, and sown in 2 April in the basin, but mid-March is the appropriate period for sowing, and it can be harvested 30 50 days after sowing.

3. Summer spinach

Most of the summer spinach is planted in stages from May to July, among which sowing in early to mid-June is the best, and it can grow up about 50 days after sowing, and can be harvested and marketed normally in July and August.

4. Autumn spinach

It is divided into two types: early autumn spinach and late autumn spinach, which are generally sown around early August to mid-September, and should not exceed early October at the latest. The specific time of each region is different, such as Northeast China, Inner Mongolia, Xinjiang and other places are generally sown from late July to early August, harvested from late September to mid-October, sown in August in North China, harvested from late September to late October, and sown in the river basin from late August to early September, and harvested in batches 30 to 40 days after sowing.

When planting autumn spinach, it is generally best planted around August every year, the temperature at this time is suitable, which can effectively promote the growth of seedlings, and is conducive to the formation and accumulation of nutrients in spinach.

Spinach can generally be planted throughout the year, but mainly planted in autumn, so when is the best time to plant autumn wave cabbage, it is generally best planted around August every year, because the germination of seeds is about 15 20, at this time planting is conducive to the formation and accumulation of spinach nutrients, and it is also the period of the highest planting yield.

1. Germination treatment

When autumn spinach is planted, it is mainly sown, and the seeds are soaked in warm water for about 12 hours a week in advance before planting, and then refrigerated in a low temperature of about 4 for 24 hours, and the seeds are placed in a warm and humid environment to promote germination, and sufficient water is given every day, and germination takes about 20 days.

2. Planting and planting

It is best to choose the substrate for cultivating autumn spinach to ensure that it has strong porosity and good water retention, add an appropriate amount of plant ash in the soil before cultivation to stir, put the germinated seedlings into the soil respectively, cover it with a layer of straw or shade net, water it thoroughly once, give sufficient sunlight, and keep the potting soil moist and optimal.

3. Water and fertilizer management

When autumn spinach grows true leaves after applying a well-rotted manure water solution, the top dressing period is generally first concentrated and then light, during the growth period can be appropriately added twice urea solution, fertilization should be combined with weeding treatment, and then timely loosening of the soil, in order to promote the normal growth of the root system.

(1) Spring spinach

Spring spinach is spinach that is sown in early spring and harvested in late spring. The average local temperature should reach 4 5 degrees Celsius at the time of sowing, and sowing can begin in the northern areas when the soil surface layer is thawed at 4 6 cm.

In high latitudes such as Northeast China, sowing is sown in April and May and harvested in May and June; In North China and Central China, the seeds were sown in February and March, and harvested in April and May. The Yangtze River basin is sown in February and April, but the sowing period is in mid-March, and it can be harvested 30 to 50 days after sowing. Attention should be paid to the selection of appropriate varieties for the production of spinach in spring to prevent sprouting.

(2) Summer spinach

The spinach sown in late spring and harvested in summer is also known as "spinach". Generally sowing in May and June, harvesting in July and August. High temperature and strong sunlight in summer are the limiting factors for seed germination, emergence and plant growth of summer spinach, which are easy to cause low yield and poor quality.

(3) Autumn spinach

Sow in summer or early fall, harvest spinach in autumn. The temperature of autumn spinach after sowing is in the period when the average daily temperature is about 20 degrees, so autumn spinach is the highest yield and best quality among all stubbles throughout the year. It is sown from late July to early August in Northeast China, Inner Mongolia, Xinjiang and other places, and harvested from late September to mid-October. In North China, it is sown in August and harvested from mid-September to late October. The seeds are sown in the Yangtze River basin from late August to early September, and harvested in batches 30 to 40 days after sowing.

(4) Overwintering spinach

Spinach sown in autumn and overwintered with seedlings, harvested in the spring of the following year, is also known as root spinach, frozen spinach, and white dew spinach. Generally, when the local average daily temperature is 17 to 19 degrees, the sowing period is appropriate, and the late-maturing and non-susceptible varieties are selected in the Yangtze River basin from late October to early November, and harvested in the spring of the following year. In northern China, the seeds are sown in mid to late September and harvested from late March to late April. In other areas, the sowing date can be adjusted according to the latitude.

(5) Spinach

Buried spinach is generally grown in northern regions. A stubble of spinach that sprouts and grows in the open field with germinating seeds in the open field and the next spring, also known as parasitic spinach and spinach covered in the soil. Its main marketing period is after the harvest of overwintering spinach and before the harvest of spring spinach.

The sowing period should be selected shortly after sowing the soil is frozen, and it is generally appropriate to sow when the average temperature drops to 3 4 °C. Sowing too early, the seeds germinate before winter, and the seedlings are too small to overwinter; Sowing too late, the soil has been frozen, the sowing quality is poor, and the seedlings emerge unevenly in the following spring, and there are many seedlings. In the north, sowing is sown in December and harvested from late April to the end of May.

Spinach is a kind of vegetable with obvious seasonal ratio in the previous planting, but with the progress of planting technology to the research and development of shu and varieties, it can basically be planted in four seasons, but the spring is best to choose to sow in mid-March, the temperature change in summer is more obvious, do a good job of sowing in batches, so that the yield will be a little higher, so the first batch is sown at the beginning of May, the second batch is sown at the end of June, and the third batch is sown in early July. In autumn, you can sow seeds throughout the season, and in winter, you can only sow seeds in November, otherwise you will freeze to death, so you must grasp the best time for planting in each season.

Spring spinach is planted in March, summer spinach is planted in May and July, autumn spinach is planted in August and September, and overwintering spinach is planted in October and November.

It is best to plant in March and April in the spring, because the temperature is suitable at this time, which is very conducive to the growth of the plants. Nitrogen and potassium fertilizers can be appropriately supplemented to promote the growth of plant rhizomes.

Spinach is a cold-tolerant plant, the seeds can be sown above 5, and the summer is suitable for sowing from May to July; Autumn is suitable for sowing in months; In winter, sowing is suitable from mid-October to early November.