Traditional Culture Encyclopedia - Weather inquiry - When do tomatoes usually ripen?
When do tomatoes usually ripen?
If the temperature is high and the climate is suitable, tomatoes will ripen quickly, and they will be ripe and red in a few days.
If the weather is bad and the temperature is low, the maturity of tomatoes will be delayed to 10- 15 days before they can be fully matured.
Extended data:
Tomato, namely tomato (scientific name: Lycopersicon esculentum? The mill. ), an annual or perennial herb belonging to the genus Lycopersicon of Solanaceae, with a height of 0.6-2m, sticky gonad hairs, strong smell, easily lodging stems, pinnately compound leaves or pinnately parted leaves, 2-5cm peduncle of inflorescence, usually 3-7 flowers, radial calyx, radial corolla, oblate or nearly spherical berries and juicy meat.
The tomato is millet, and its plant height is 0.6-2 meters. All tomatoes are covered with mucus glands and have a strong smell. The stem lodging easily. The leaves are pinnately compound or pinnately parted, with a length of 10-40 cm. Leaflets are extremely irregular and vary in size, generally 5-9, oval or oblong, 5-7 cm long, with irregular serrations or lobes at the edges. Peduncle 2-5 cm long, usually with 3-7 flowers; Pedicel length1-1.5cm; Calyx radial, lobes lanceolate, persistent when fruit; Corolla radial, about 2 cm in diameter, yellow. Berries are oblate or nearly spherical, juicy, orange or bright red and smooth; The seeds are yellow. Flower and fruit period, summer and autumn.
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%. The requirements for soil conditions are not strict, and fertile loam with deep soil layer, good drainage and rich organic matter grows well. The optimum pH value of soil is pH6-7.
Tomatoes are rich in carotene, vitamin C and B vitamins.
Every 100g tomato contains1/kcal nutrients, B0.06 mg vitamin B, 0.9 g protein, 0.2 g fat, 3.3 g carbohydrate, 5.6 g folic acid, 1.9 g dietary fiber, 63 g vitamin A and 375 g carotene. Vitamin c14mg, vitamin e 0.42mg, calcium 4mg, phosphorus 24mg, potassium179mg, sodium 9.7mg, iodine 2.5mg, magnesium12mg, iron 0.2mg, zinc 0.12mg and copper 0.
When choosing tomatoes, don't choose the ones with sharp edges and corners, and don't choose the ones with light feelings. It's all the fault of the red sponsor. If you want to buy this kind of noodles, it has a faint pink feeling, and the pedicle must be round. If the pedicle has a faint cyan color, it will be the sandiest and sweetest. Don't buy sharp ones, the bottom is very high. You want something that looks smooth as a whole. Everything with a sharp point is covered with something that matures quickly in spring. Choose tomatoes with round colors and white spots on the skin.
Matters needing attention
First, it is not suitable for raw food, especially for women with deficiency of spleen and stomach and menstrual period. If you just take tomatoes as a fruit to supplement vitamin C, or clear away heat and relieve summer heat in midsummer, it is better to eat them raw.
Second, it is not advisable to eat on an empty stomach. When the stomach is empty, gastric acid secretion increases. Because a chemical contained in tomatoes combines with gastric acid, it is easy to form a water-insoluble block, which often causes abdominal pain, stomach discomfort and flatulence.
Third, immature cyan tomatoes should not be eaten because they contain toxic solanine. Eating immature cyan tomatoes will make you feel bitter and overeating. In severe cases, it will lead to poisoning, dizziness, nausea, general malaise, vomiting and general fatigue, and even life-threatening in severe cases.
Fourth, it is not suitable for long-term high-temperature heating, because lycopene is easy to decompose when exposed to light, heat and oxygen, and loses its health care function. Therefore, long-term high-temperature heating should be avoided when cooking.
References:
Baidu encyclopedia-tomato
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