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Tomatoes are completely red before picking, because red tomatoes have the lowest solanine and the highest nutrients.
Tomato (tomato), also known as tomato, persimmon. The ancient name is June persimmon, good news three yuan. In Peru and Mexico, it was originally called "wolf peach".
The whole body is viscous glandular hairs with a strong odor. The stems are prone to lodging. Leaves pinnately compound or pinnate deeply lobed, leaflets very irregular, unequal in size, ovate or rectangular, margins irregularly serrated or lobed.
calyx radiate, lobes lanceolate, fruiting; The corolla is radiate, yellow. berries oblate or nearly globular, fleshy and juicy, orange or bright red, smooth; Seeds yellow. Flowering and fruiting period: summer and autumn.
Tomato is a temperature-loving and light-loving vegetable, and the requirements for soil conditions are not too strict, but in order to obtain a high yield and promote the good development of the root system, a fertile loam soil with deep soil layer, good drainage and rich in organic matter should be selected. Native to South America, it is widely cultivated in the north and south of China. Tomatoes are nutritious and have a special flavor.
It has the effects of eliminating fatigue, increasing appetite, improving the digestion of protein, and reducing stomach distension and food accumulation.
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It is suitable to pick when it is ripe, but if it is to be transported for long distances, it can be picked a little raw.
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When is the best time to pick tomatoes?
Tomatoes when to summarize also vary from case to case, can not be generalized.
When to pick tomatoes, for example, what you want to eat right away is red and delicious when it is most ripe.
If you want to **, it is easiest to save the tomatoes when they are still a little green.
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It is best eaten when it is cooked right away.
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It depends on how you eat it, if you eat it raw, it will be cooked thoroughly and then picked; Otherwise, you don't need to be too familiar.
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Don't wait until it's ripe, it's best to pick it when it's a little hard to the touch.
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Tomato planting time.
The planting time of tomatoes is mainly concentrated in January-March and July-August. In the spring open field cultivation, seedlings are generally sown from mid-February to early March in Beijing; In autumn, it is cultivated in the open field, and the south of the Yangtze River such as Shanghai and Nanjing is generally sown from late July to early August, and the eastern part of Sichuan is sown in early July. Therefore, the specific tomato planting time can be determined according to the field situation.
Tomatoes usually ripen during the summer months.
Tomatoes are usually ripe in the summer season, tomatoes are sown at different times, the time of ripening will be different, the tomatoes sown in February and May will mature in summer and autumn, and they can also be sown between July and August in autumn, and can be carried out and collected in November and February, and the planting time of wintering tomatoes is between September and November, and they can be planted in January of the following year.
Tomatoes ripen in summer.
Tomatoes belong to common vegetables in life, many people are not very clear about what season tomatoes are ripe, tomatoes are usually ripe in summer 6 to 7 months, tomatoes are usually sown in spring in May, and it generally takes only 30 to 40 days from flowering to fruit.
Tomatoes can be sown between February and May in spring, mature around June, sowing in autumn between July and August, planting in September, and harvesting in November and February.
Some tomatoes can also be sown around November and ripen between March and June of the following year, and the overwintered tomatoes are also raised between September and October, planted in November, and planted around January.
Tomatoes need to be soaked in water for 1 2 hours before sowing, and then placed in about 50 warm water for 15 minutes.
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Tomato planting time.
Spring tomatoes are generally planted after the late frost period in the local area; Autumn and winter stubble is generally sown from mid to late July to early to mid August, and planted from mid to late August to early September; The winter and spring stubble is sown from early November to early December, and planted from mid to late January to early February of the following year. Overwintering stubble is generally raised from mid to late September to early October, and planted in November.
Tomato knowledge extension.
1. The key to tomato cultivation is to cultivate strong seedlings, which have a strong seedling index of 6 9 leaves, a seedling age of 55 70 days, a height of 20 25 cm, and a flower bud of 100{bf}.
2. Tomato has less strict requirements for soil conditions, but in order to obtain high yields and promote good root development, fertile loam soil with deep soil layer, good drainage and rich in organic matter should be selected. The pH of the soil should be pH6 7, and the soil that is too acidic or too alkaline should be improved.
3. People with hepatitis, fever, dry mouth, summer heat and thirst, loss of appetite, hypertension, kidney disease, heart disease, fundus hemorrhage, cancer, vitamin C deficiency, niacin deficiency (pellagra), diabetes, bleeding gums and other diseases are suitable for consumption; People with poor cholesterol metabolism also have benefits for regular consumption.
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Tomatoes are cultivated in solar greenhouses in autumn, winter and spring, when the temperature is low in nature. In North China, solar greenhouse production can be arranged from July to June of the following year.
Generally, according to the sowing and planting time, stubble can be divided into autumn and winter stubble, early spring stubble and winter and spring stubble.
Autumn and winter stubble is generally sown from mid to late July to early to mid August, and planted from mid to late August to early September; The film is buckled from mid to late September to early October, and harvested from late November to early February of the following year.
Winter and spring stubble is sown from early November to early December, planted from mid-to-late January to early February of the following year, and harvested from early-to-mid-March to June.
Early spring stubble is a large crop cultivation. Seedlings are generally raised from mid to late October to early November, planted from late January to early February of the following year, harvested from mid to late March, and finished in June.
Extended information: Tomatoes are light-loving crops with a light saturation point of 70,000 lux, and sufficient light is conducive to flower bud differentiation, which can promote fruiting and improve yield and quality. In production, it is necessary to ensure that the light level reaches 3 3 50 million lux, under normal natural light conditions, the average flowering rate of the first inflorescence is 15 2%, when the light intensity is reduced to 50% of the normal light, the average flowering rate is 62 9%, and when the light intensity is reduced to 15% of the normal, the average flowering rate is as high as 91 1%. Winter production is often not sunny enough, and it is necessary to try to meet the light requirements of tomatoes.
Tomatoes are short-day plants, and the flower buds are well differentiated under short-day conditions, and there are no strict requirements for the length of sunshine for flowering. Long light time can significantly promote vegetative growth, improve seedling quality and increase plant yield. The light is strong, and the flower buds differentiate early. On the contrary, the seedling density was high, the light was weak, the flower bud differentiation was late, the node of the first flower spike increased, and the number of flowers was small.
Therefore, it is an important measure to improve the quality of seedlings and cultivate high-quality strong seedlings by reasonably grasping the density, increasing the light time and increasing the light intensity during the seedling raising period.
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First, the planting time of tomatoes in the northeast and northwest of China, tomatoes can be planted in two seasons, so they can be sown in March and June every year, and in North China in China, they are generally sown in January and February every year, but in addition to the above areas, tomatoes are basically planted in March and August every year.
2) The distance between each row is generally between 40-50cm, and the distance between each plant is about 30-40cm, which is not only convenient for field management in the later stage, but also has enough stretching space between tomato plants, which is conducive to photosynthesis.
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Tomatoes have a long history of planting, and after many years of cultivation, there are many varieties, and their ability to adapt to the environment has been greatly improved, and the planting time also changes with the climate and temperature of the region. The planting time of spring tomato is from February to May, the planting time of autumn and winter stubble is generally from July to September, and the planting time of winter and spring stubble is from November to February of the following year.
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The best time to grow tomatoes is as follows:
1. Tomato spring planting usually starts to raise seedlings in February, and can be planted in April and May, and the spring planting time will be different in different regions. It is understood that tomatoes are generally planted in the Yangtze River basin before and after the Qingming Festival, tomatoes are generally planted in North China before and after the valley rain, and tomatoes are generally planted around the beginning of summer in the Northeast region.
2. Tomatoes are generally planted in autumn in July and August, and can be planted in August and September, and fruits can be harvested from late November to early February of the following year.
3. The winter planting time of tomatoes is sown from early November to early December, planted from mid to late January to early February of the second year, and fruits can be picked from early to mid March to June.
Introduction to tomato planting technology:
1. Soil requirements.
Tomato planting needs to be carried out in a relatively moist soil, the soil is too dry will cause it to grow, we must choose some flat, small slope area to plant, before planting to loosen the soil in time, let the soil a little looser.
Although tomatoes prefer to grow in moist soil, they should not be allowed to be planted in the area where they are planted due to rain and waterlogging, which will cause the whole plant to wilt.
2. Density requirements.
Tomato planting void should be larger, not too dense, which will affect their growth and lighting, and too dense will lead to poor growth and development, and the fruit is relatively small, which can not bring much yield, so the planting density is the best to pull away from the distance, so as to bring higher yield.
3. Fertilization requirements.
Tomato fertilization is generally based on farm fertilizer, such as poultry manure and some mixed fertilizers, we need to fertilize a small amount many times, so as to ensure their demand for fertilizers and nutrients.
When topdressing, you can do a second topdressing when the tomatoes are flowering, and then as the fruit grows, and the topdressing after the first harvest also needs to keep up with the progress, otherwise it will lead to a decrease in yield.
4. Field management.
After the tomato is planted, it should be cultivated in time to promote rapid rooting and slow seedling growth, and cooperate with the cultivation to loosen the soil and weed. Ordinary watering should also be watered according to seasonal climate change, more watering should be done in the dry season, as little as possible in winter, and drainage measures should be done in the rainy season.
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In the northeast and northwest of China, tomatoes can be planted in two seasons, so they can be sown in March and June every year, and in North China in China, they are generally sown in January and February every year, but in addition to the above areas, tomatoes are basically planted in March and August every year.
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Tomato is our common fruit and vegetable, it can be eaten raw or fried, sweet and sour taste, rich in a variety of vitamins, widely cultivated in China. It has been cultivated for a long time, and after many years of cultivation, there are now many varieties and its ability to adapt to the environment has improved, and its planting time also varies with the climate and temperature of the region.
In China, the cultivation area of tomato can be divided into 4 main growing season areas.
l) Northeast and Northwest regions: including the northeast and northwest provinces and the alpine regions of northern China. Here, spring sowing and autumn harvest are the main ones, summer cultivation is the mainstay, and one crop is planted once a year, and the tomato varieties are mainly cultivated without scaffolds.
Under normal circumstances, seedlings are sown in March and April, planted in the open field in May, fruits are harvested in July and September, and seedlings are pulled before early frost.
2) North China: Mainly in the North China Plain. The frost-free period here is longer than in the Northeast, and the summer is hot and rainy, so it is not easy to grow tomatoes over the summer.
Under normal circumstances, seedlings are sown from January to February, planted in the open field from late April to early May, fruits are harvested in late June, and seedlings are pulled in early August.
3) Middle and lower reaches of the Yangtze River: Two crops are planted here a year, mainly in spring and summer (called spring tomatoes), and a small amount in autumn (called autumn tomatoes). Spring tomatoes are generally sown and seedlings are sown from November to December, planted in mid to late March of the following year, harvested in late May, and pulled in mid to late July. Autumn tomatoes are generally raised or seeded in July-August, planted in early August and September, harvested in early October, and pulled in late November.
4) Pearl River Basin area: planting a stubble a year, the region has more rain in spring, weak light, high humidity, high temperature and rain in summer often accompanied by typhoons, and autumn has sufficient sunshine, less rain, and warm winter, so it is mainly planted in autumn and winter, also known as winter tomatoes. Generally, seedlings are sown and raised in August and September, planted in September and October, harvested in mid-November, and seedlings are pulled in late February of the following year.
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February, July, early November to early December are OK, tomato root system developed, strong water absorption ability, long growth period, tall plants, lush branches, plus tomato fruit multiple harvesting, tomato in the life of water requirements, and each growth period requires appropriate air humidity and soil moisture, usually requires soil relative moisture of 65% 85%, watering should be carried out according to the requirements of water and weather conditions in different growth periods, as well as the growth of plants.
Watering when planting, can maintain the balance of water, prevent the plant from dehydration and death, this watering requires more water, to ensure the penetration of the planting soil, planting in winter and spring, has been watered dark water as well, can prevent the ground temperature from dropping more, planting in summer and autumn, generally using watering water, watering water consumption is large, keep moist for a long time, is conducive to slowing down seedlings.
When spring tomatoes are planted, the seedlings are generally older, and they are generally no longer watered during the period from the time of slow seedling watering to the first ear of fruit sitting. The seedling age of summer and autumn tomato planting is small, after slowing the seedling, it is necessary to promote the rapid growth of seedlings, timely watering, and pay attention to cultivation after watering. Flowering period of water-controlled squatting seedlings, flowering rarely watered, unless the drought is serious, this period is mainly to keep the soil loose, the surface dry, promote strong seedlings, at the same time the use of Ribery Yanwo water-soluble fertilizer, to ensure that the root system expands downward, for the future plant vigorous growth, lay a good foundation.
When the fruit water sits 2-3 in the first ear of fruit, it should be watered in time to promote the fruit, pay attention to the watering time, the water is watered early, and the plant will often grow vigorously, the vegetative growth will be too vigorous, and it is not easy to set the fruit or delay the fruit setting period. After the watering is completed, the growth of the plant is stunted, and although there are many fruit sets, the leaves become smaller, the growth is slow, and the yield is reduced.
Watering in the full fruit period is carried out after the first ear fruit sits, at this time the tomato has entered the stage of flowering and fruiting, fruit expansion and maturity, the plant growth is large, the organs of each part have a large demand for water, generally watering once in the early 5-6 days of fruiting, so that the ground is dry and wet, and shallow hoeing can be carried out after watering, otherwise continuous watering is easy to cause ground plate knots, and the evaporation is large.
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