The onion sprouts little by little, is it darker in color, or is it getting shallower and shallower?

The color is getting darker and darker, because the buds that come out are all young shoots, and when they grow, they become dark.

In addition, onion sprouting is edible. After the onion sprouts, it does not produce toxic substances such as solanine or aflatoxin like potatoes or peanuts, so it can be eaten with confidence.

When the onion sprouts, part of its own nutrients will provide the growth of the buds, and the onion nutrition at this time will be reduced, and the taste will not be very good.

The germination rate of onions in warm and humid places will be very high, if the onions at home can not be eaten for a period of time, it is best to put them in a cooler and dry place, otherwise it is easy to produce mold.

Eating onions regularly can prevent cardiovascular and cerebrovascular diseases, and the hypertrophied bulbs of onions are rich in a variety of nutrients that are needed for human health. 100g of onions contains 5mg of vitamin A, 40mg of vitamins, 40mg of calcium, 50mg of phosphorus, 8mg of iron, and up to 18 amino acids.

The average patient with coronary heart disease consumes 50-75g of onion every day, which is stronger than the current commonly used hypolipidemic drugs, and regular onion can keep blood sugar stable and inhibit the growth of cancer cells.

The buds of the onion should be from tender to ripe, and the color should be from light green to dark green.

The onion is darker when it sprouts, and it will gradually become lighter.

The onion sprouts little by little, and at first it comes out milky white, then it slowly turns yellow, yellow-green, emerald green, dark green, and then gradually deepens in color.

Little by little, the onion sprouts, and it becomes lighter and lighter, and I have grown this kind of thing.

The sprouts that grow after the onion sprouts are called branch sprouts.

Onion plant composition.

Roots: The radicle of the onion will shrink soon after entering the soil, so there is no taproot, its root is a string-like fibrous root, born at the base of the short stem disk, the root system is weak, there is no root hair, the root system is mainly densely distributed in the topsoil layer of 20 cm, so the drought tolerance is weak, and the ability to absorb fertilizer and water is weak. The root growth temperature is lower than that above ground, when the ground temperature is 5 degrees Celsius, the root system begins to grow, 10 15 degrees Celsius is optimal, and 24 25 degrees Celsius grows slowly.

Stem: The stem of the onion is in the vegetative growth period, the stem is shortened to form a flat conical stem disk, the lower part of the stem disk is a coiled heel, the upper part of the stem disk is surrounded by a circle of cylindrical leaf sheaths and branch buds, and the lower part grows fibrous roots. The coiled heel tissue of mature bulbs shrinks and hardens, preventing water from entering the bulb.

Therefore, the coiled heel can control the premature growth of roots or premature germination of bulbs, during the reproductive growth period, the plant is subjected to low temperature and long sun conditions, the growth cone begins to differentiate flower buds, and the flower sprouts are extracted, the flower sprouts are cylindrical, hollow, the middle part is expanded, there is wax powder, the top forms an inflorescence, and it can bloom and bear fruit.

The top bulb onion degenerates due to flowering, forming aerial bulbs in the flower buds.

Leaves: The leaves of the onion are composed of two parts, the leaf body and the leaf sheath, which form a false stem and a bulb from the leaf sheath part, and the leaf body is dark green, cylindrical, hollow, and has a groove on the abdomen (which is one of the morphological markers that distinguish it from the green onion at the seedling stage). The tubular leaves of onions grow upright, have a small leaf area, and the leaf surface is covered with a thick wax powder, which is a drought-resistant ecological characteristic.

Flowers: Flowers stout, up to 1 m high, hollow cylindrical, swollen below the middle, tapering upwards, leaf sheaths at the bottom; bracts 2-3-lobed; umbel inflorescence globular with numerous and dense flowers; The peduncle is about centimeters long. pollen white; tepals with green midrib, oblong-ovate, 4-5 mm long, about 2 mm wide; The filaments are of equal length, slightly longer than the tepals, about 1 5 conjugated at the base, 1 2 of the lower part of the conglomerate are attached to the tepals, the base of the inner filigree is extremely enlarged, the enlarged part has 1 tooth on each side, the outer whorl is tapered;

Ovary: nearly globular, depressed hole with curtain at base of ventral suture; The columella is about 4 mm long.

The flowering and fruiting period is from May to July.

When an onion sprouts, it grows a sprout. Onion hair sprouts grow green onion can be eaten. Onions that have sprouted or even grown green seedlings do not produce substances harmful to the human body, so they can still be eaten.

After the onion sprouts, the nutrients in the scaly part are transferred to the top for the sprouts to grow, resulting in a decrease in nutrient content. In addition, after the onion sprouts, it will affect its commodity value, and its taste is also spicy. Therefore, the onion should be dried in the sun for a period of time, and then placed in a ventilated and dry place to avoid germination as much as possible.

Onions should be supplied with sufficient water during the germination stage, the peak growth period of seedlings and the bulb expansion stage. However, it is necessary to control the water at the seedling stage and before overwintering to prevent the seedlings from growing and suffering from frost damage. Irrigation should be controlled 12 weeks before harvest to enrich the bulb tissue, accelerate maturation, and prevent the bulb from cracking.

Onion leaves are drought-tolerant, suitable for 60% to 70% humidity, and the air humidity is too high to cause diseases.

It could be both:

1. Onion root rot, caused by Streptospore fungus, the main symptoms are fibrous root infection and water-stained necrosis, which rapidly develops to root rot, browning the surface of the bulb, and severe soft rot near the slew spo, and a white mold layer will grow on it in the later stage;

50% carbendazim wettable powder 500 times, 40% compound thiophanatezim 400 times, 10% dual-effect liquid 1500 times for spraying and root irrigation.

2.Soft rot, the symptoms are white spots on the outer leaves, softening and rotting at the base of the leaf sheath, the leaf color is light, the outer leaves wilt and fall, and the bulb soft rot has a foul smell.

58% can kill dry suspension, 600 to 800 times, 47% Garinone, 400 to 600 times, 25% thiazole wettable powder 800 times, 30% copper ammonia aqueous 350 times.