When is the best time to sow lettuce and when is the best time to plant lettuce?

Lettuce can be sown all year round, spring can be sown in February and March, spring sowing survival rate is the highest, summer needs to be sunscreen with shade nets, in June and July sowing germination is more difficult, autumn should also be sunshaded nets for sun protection, can be sown in August and September, winter needs to control the temperature at about 15, can be sown in October and November.

1. Lettuce can be sown all year round.

When are lettuce sown.

Lettuce can also be called lettuce, is a relatively common vegetable, not only delicious taste and high nutritional value, but many flower friends do not know when lettuce is sown, lettuce can actually be sown all year round, it has strong adaptability to the environment, can be planted well.

Lettuce is sown in spring 2 to 3 months, sowing in spring not only has a high survival rate, but also a fast germination rate, lettuce can also be sown in summer 6 July, you need to use shade nets to protect from the sun, you can also breed in astigmatism, because the temperature in summer is high, so the germination of seeds is very difficult, and may not even germinate.

If lettuce is sown in autumn, it can be sown in August and September, or it needs to be protected from the sun with a shade net, autumn sowing has a higher germination rate than summer sowing, and in winter it can be sown in October and November, in addition to giving it enough sun, the temperature should be controlled at about 15.

Second, the sowing method of lettuce.

1. Soak and sprout.

When are lettuce sown.

Every time we sow lettuce, we can soak the seeds of lettuce in clean water for about 2 hours, then wrap the soaked seeds with a damp cloth, spray a little water with an appropriate amount of water every day, wait for about 3 5 days, and the seeds will take root.

2. Slightly acidic soil.

Lettuce has strict requirements for soil, it needs to be loose soil, high fertility, strong water and fertilizer retention, slightly acidic soil, can be selected to use garden soil, humus soil, coarse sand according to the ratio of 5:4:1 mix as the substrate for sowing lettuce.

3. Planting and sowing.

When are lettuce sown.

It is necessary to loosen the prepared soil, then sow the treated seeds in the soil, spray water to maintain the moisture of the soil, and it is best to control the temperature at about 15 20, so that the lettuce can germinate faster.

4. Post-sowing management.

Lettuce needs to be watered in time after sowing to ensure the moisture of the soil, especially in summer, and the weeds around the lettuce should be treated regularly, and nitrogen, phosphorus and potassium fertilizers should be applied every 20 days, so as to promote the better growth of lettuce seedlings.

Hello, when is the best time to sow lettuce? If it is the south, I think he can plant several seasons a year, and after the harvest, he can sow later, but if it is in the north, it will not be a sowing in the autumn, only in the spring.

Nutritive value. Lettuce contains carbohydrates, proteins, fats, dietary fiber, potassium, phosphorus, calcium, sodium, magnesium, iodine, iron, fluorine, folic acid, vitamin A, carotene, vitamin B1, vitamin B2, vitamin B6, vitamin C, vitamin E, vitamin K and other ingredients.

1.Lettuce is rich in dietary fiber, which can promote the peristalsis of the intestinal wall, make the feces absorb water and expand, promote the excretion of feces, and relieve a variety of constipation.

2.Lettuce contains potassium, which can regulate the appropriate osmotic pressure in cells and the acid-base balance of body fluids, participate in the metabolism of sugar and protein in cells, and have the effect of lowering blood pressure and blood sugar, and are suitable for patients with hypertension and diabetes.

3.Lettuce contains a small amount of iodine, which can play a role in regulating mood, so eating lettuce can also eliminate tension and help sleep.

4.Lettuce is rich in vitamin B group, which is an indispensable nutrient for human metabolism, which can promote health, help resist the damage of sunlight, and promote cell regeneration.

5.The vitamin K contained in lettuce can participate in the synthesis of vitamin K-dependent protein, and then regulate the synthesis of calcium phosphate in bones, so women and the elderly may wish to eat lettuce containing vitamin K, which can effectively reduce the risk of fractures.

Efficacy. Lettuce, native to Central or North China, is now cultivated all over China. It is the stem and leaf of lettuce of the genus Lettuce of the Asteraceae family.

It has the functions of diuretic and lactation, clearing heat and detoxifying, promoting digestion, widening the intestine and laxative, preventing iron deficiency anemia, improving glucose metabolism, calming and sleeping, and protecting the liver.

Lettuce, belonging to the Asteraceae family, is an annual or biennial herbaceous plant. It is a cold vegetable, likes a cool climate, does not tolerate high temperatures, and the main varieties cultivated are lettuce, lettuce, and iceberg lettuce. Lettuce has a good edible value and is cultivated all over our country, its taste is delicious, the taste is crisp, it can promote digestion and improve appetite.

So how do you grow this vegetable?

Lettuce planting time. Lettuce planting needs to determine the planting time according to the local climate, variety characteristics. Spring lettuce seedlings are raised from December to March, and seedlings begin to grow in the open field from February to March; Summer lettuce is cultivated in the open field from April to May; Autumn lettuce seedlings are transplanted from July to September.

Spring lettuce is the main crop in the Yangtze River Basin, which is generally sown from September to October in the autumn of the first year, planted in about 40 to 5 days, and harvested from April to May of the following year.

Lettuce selection and seedling. When planting, high-yielding varieties with good heat tolerance and not easy to sprout are generally selected. The seedbed is selected in a flat terrain and fertile soil, soak the seeds before sowing and promote germination, soak the seeds in clean water for 24 hours, put them in a low temperature environment for a day, and then take them out and put them in a cool place for three to five days, and the seeds can be sown.

After the seeds emerge, they are sown with a small amount of fine sand, two to three grams per square meter.

Lettuce transplanting and colonization. Seedlings grow for twenty-two to twenty-five days and can be transplanted when five leaves appear. Generally, it is done on cloudy mornings or after rain, which can improve the survival rate of lettuce.

Each plant is kept at about 30 centimeters, and the row spacing is kept at about 40 centimeters, and a reasonable transplanting density can improve the yield of lettuce, and it is also convenient for us to manage the growth period.

Lettuce field management. Lettuce takes more than a month from planting to harvesting, and in order for the stem to grow quickly, it needs to be topdressed three times. For the first time after planting, use manure urine water for irrigation, you can add a little urea.

Wait until the lettuce grows to twenty-five centimeters for a second top dressing, mainly with urea. The third time is when the stem is expanded, urea is the main body, combined with the appropriate amount of potassium fertilizer, which can improve the quality of lettuce and enhance the taste.

Of course, each topdressing of lettuce is not carried out alone, it needs to be combined with watering and weeding at the same time. Stop fertilizing ten days before harvest to promote stem ripening. Lettuce planting is not difficult, as long as you master the lettuce planting management and specific steps, and operate strictly, the yield of planting lettuce will naturally not be low.

Spring lettuce is planted in the open field from April to May, and autumn lettuce is planted in 9-10, which can safely overwinter in the Yangtze River basin.

How lettuce is grown.

1. Soil preparation and fertilization.

The root system of lettuce is shallow and the absorption capacity is weak, so the soil should choose loose sandy soil is better, choose a high-terrain, well-drained, dry plot, apply foot fertilizer before sowing, and then turn deeply, knock the soil loose and crush, and then level it finely, cover with a layer of mulch and prepare for planting.

Pay attention to the application of nitrogen fertilizer and potassium fertilizer in the early, middle and late stages of lettuce elongation and expansion, each time 15 20 kg of urea, 8 10 kg of potassium sulfate, or 20 25 kg of potassium nitrate per mu, mixed with water or biogas slurry or 150 200 times of decomposed human and animal manure water, evenly applied in the soil around the roots of lettuce plants, and it is advisable to completely infiltrate the fertilizer into the soil without outflow. In addition, during the elongation and expansion of lettuce, urea, 600 times potassium amino acid mixture, or potassium nitrate aqueous solution should be sprayed every 7 to 10 days, and sprayed 2 3 times continuously. Spray all the leaves evenly, and it is advisable to start to drop water droplets, and supplement nitrogen and potassium fertilizers from the foliage.

2. Sow seeds. In order to ensure that the seeds can germinate smoothly, the seeds need to be treated before sowing, and the seeds should be soaked in water for about 6 hours, and then wrapped in a wet towel to start germination. After germination, you can sow seeds, lettuce seeds are relatively small, so when sowing, the environmental fine soil is stirred evenly and then sown, before sowing, the soil is watered once, an average of 2-3 grams per square meter of sowing, and a layer of shallow fine soil can be covered after sowing.

After sowing, cover a layer of film, heat preservation and moisturizing to speed up germination, carefully observe, when the seedlings are unearthed, immediately open the film, maintain ventilation and light, and wait for the seedlings to grow about 3 true leaves when they can be planted.

3. Colonization management.

In order to ensure its rapid and strong growth, the spacing and row spacing should be kept 25cm 30cm, watered in time to promote root development, keep the soil moist, if the planting is a high temperature period in summer, it should be properly shaded to avoid damage to the seedlings. There is basically no need to fertilize after applying plantar fertilizer, you can apply one or two thin Bika water-soluble fertilizer when cultivating or weeding, and pay attention to the shallow roots when cultivating, its root system is not underdeveloped, and the cultivator is too deep, which will damage its root system.

Spring lettuce is usually planted in April and May, and autumn lettuce is usually planted in September and October. Lettuce is a vegetable that is adaptable, resistant to semi-cold, and afraid of high temperatures, so it is more suitable to be planted in spring and autumn.

If it is planted in a field, there are no greenhouses, and lettuce is sown in the spring. It has a short growth period.

Planting time.

The planting time of lettuce needs to be formulated according to the local climatic conditions, variety characteristics, facility conditions and the arrangement of planting stubble throughout the year.

Spring lettuce, greenhouse seedlings from December to March, and open field seedlings from mid-February to late March; Summer lettuce is cultivated in the open field from April to mid-May, covered with shade nets from late May to July, and planted with direct seeding or high density; Autumn lettuce, from July to September, use shade net to cover and sow seeds, and seedlings are transplanted; Overwintering lettuce, seedlings in the open field from October to November.

Lettuce in the Yangtze River basin winters in the open field, mainly spring lettuce, generally sown in September to October in the autumn of the first year, 40-50 days when the seedlings have 5-6 true leaves planting, can safely overwinter in winter, there is enough time to grow leaf clusters after returning to green in the next spring, and high yield can be obtained by harvesting in April and May.

Growing environment. 1. Light: Lettuce is a long-day crop with sufficient light.

2. Temperature: Lettuce is a semi-cold-tolerant vegetable, likes cold and cool, slightly frost-resistant, afraid of high temperatures, and grows poorly in hot seasons.

3. Soil: Lettuce is sensitive to the acidity and alkalinity of the soil, and is suitable for planting in slightly acidic soil, and the suitable soil pH value is about one.

4. Moisture: It is extremely sensitive to the water state of the soil surface, and it is necessary to continuously supply water to keep the soil moist. And the amount of fertilizer required is large, and it is suitable to grow in clayey loam or loam soil that is rich in organic matter and retains water and fertilizer. Bika water-soluble fertilizer can be applied to the soil to improve fertility.

A1Spring lettuce is sown in greenhouses from December to March or in the open field from February to March, and harvested in summer. Choosing cold-tolerant and medium- and late-maturing varieties that are not easy to moss is conducive to high yield and high quality.

The amount of seeds per mu of seedbed is 50-100 grams, and about 1 gram of germinated seeds are sown per square meter of seedbed. After the seedlings, keep a spacing of 5 cm, the seedling age is about 30 days, and the seedlings are transplanted when they have 5-6 true leaves, and the density of 5000-6000 plants is appropriate.

2.Summer lettuce is sown in the open field in March and April, cultivated in the shade after late May, and harvested before July. Heat-tolerant varieties are selected, and seeds can also be sown after soaking and germination. When the seedlings are about 25 days old and have 4-5 true leaves, they can be transplanted.

Article **23Autumn lettuce is raised in the shade from July to September, cultivated in the open field, and harvested in autumn. Choose varieties with thick stems, cold and disease resistance.

The temperature in summer and autumn is high, lettuce seeds can not germinate, or germination is difficult, you need to soak the lettuce seeds in clean water for about 2 hours, and then wrap the seeds with a damp cloth and drain the water, put them in 15 20 to promote germination, spray an appropriate amount of water every day, and germinate in 3 5 days. Cover the seedbed with shade nets, reduce the temperature and strong light, and water and sprinkle water frequently to cool down and avoid seedlings from growing.

Article **34Overwintering lettuce is sown in the open field in September-October and harvested after overwintering. Varieties with cold tolerance, high yield, and late budding can be sown directly, or sown after germination. There is no need for shade nets after sowing, but it can be covered with a layer of straw or straw curtain to moisturize the seedlings, and the mulch can be uncovered after the seedlings emerge.

The planting time of lettuce needs to be determined according to the local climatic conditions, variety characteristics, facility conditions and year-round planting schedule. Lettuce in the Yangtze River basin overwinters in the open field, mainly spring lettuce, generally sown in the autumn of the year 9-10 months, 40-50 days when the seedlings have 5-6 true leaves planting, winter can be safely wintered, the next spring after the green has enough time to grow leaf clusters, 4-5 months harvest can obtain high yield.