Tomatoes are a kind of food that can be eaten raw or cooked. Contains a lot of vitamin C and lycopene, which has higher nutritional value when eaten raw. Tomatoes are rich in carotene, vitamin C and B vitamins, and have high nutritional value. They can be used as vegetables or fruits, raw or cooked. Tomatoes can be used to make ketchup, tomato juice and diced tomatoes.

Tomatoes are native to South America. They were originally wild berries in South America. People think they are brightly colored and highly toxic. They regard them as "fox fruits" and only use them for viewing. When they were first introduced to China, they were also used as ornamental plants. It was not until the middle and late19th century that China began to eat tomatoes and began to plant them in large areas in big cities such as Shanghai. The United States, Italy and China are the main producing countries, and they are cultivated in the north and south of China.

Growth habit

Tomato is a warm vegetable. Under normal circumstances, the optimum temperature for assimilation is 20-25℃, and the optimum soil temperature for root growth is 20-22℃. Like light, the light saturation point is 70000lx, and the suitable light intensity is 30000-50000lx. It is also a short-day plant, and tomatoes like water. Generally, the soil humidity is 60%-80%, and the air humidity is 45%-50%.

Tomatoes have low requirements on soil conditions and grow well in fertile loam with deep soil layer, good drainage and rich organic matter. The optimum pH value of soil is pH6-7. Tomatoes are native to Peru and Ecuador in South America. China, India, the United States, Turkey, Egypt, Iran, Italy, Spain, Brazil and Mexico are countries with large tomato planting areas in the world.