Characteristics of leeks, what are the characteristics of the stem of leeks?

The root of the leek is a string-shaped root, and its prominence is located on the annual plant (i.e. in the year of sowing) at the base of the stem disc of the bulb. From the second year of growth, the base of the stem disc grows upwards and gradually forms a rhizome. The bulbs are born on rhizomes, and new fibrous roots are born on the stem disc and rhizomes.

The old roots die year by year, and new roots continue to grow, and the new roots grow on the upper side of the old roots, constantly moving towards the surface of the soil. This phenomenon of new roots moving upwards is called "jumping roots", and following the roots is an important feature of leeks. In terms of growth, it is necessary to cultivate soil in a timely manner to protect the growth of the root system.

Leeks have more roots, strong absorption capacity, and drought tolerance. There are two types of leek stems: vegetative stems and flower stems. 1 The 2-year-old vegetative stem is disc-shaped, with bulbs on the top and roots on the bottom, and the vegetative stems of more than 3 years continue to extend to the surface to become rhizomes, which are the meristems of new roots and leaves of leeks and an important organ for storing nutrients in winter.

The flower stems are terminal buds that develop and need to be exposed to low temperatures and long sunlight each year, followed by budding, flowering and seed setting. The leaves of leeks are flattened and ribbon-shaped, consisting of two parts, leaf sheaths (pseudostems), that is, leek stems and leaf bodies, clustered at the top of rhizomes, each plant has 5 9 leaves. The pseudostem formed by the leaf sheath is softened and its quality is fresher and more tender than the leaf body.

The reason why leeks can grow again after harvesting is because there are meristems at the base of the leaf sheath, which continue to grow. However, care must be taken that it cannot be too low when harvesting, otherwise it will damage or completely destroy the meristem. Leeks can not be tillers, in the process of growth, the old tillers break off and wither, and form new tillers, so that the whole plant cluster is constantly renewed.

Taking advantage of the characteristics of tillering, leeks can be propagated by branches. In general, sowing and propagation are carried out. Leeks grow to a certain size, and after a period of low temperature, they can be sprouted and harvested.

Leeks are a higher-grade vegetable. Leek is a cold-tolerant perennial root vegetable, which is more heat-tolerant and has strong adaptability to temperature. The suitable temperature for leaf growth is 15 25 , but it can also grow well at 10 15.

When the temperature exceeds 25, the growth of the plant becomes slow, and above 30 the growth is poor, and even yellowing and wilting. In the Changsha area, it is generally possible to spend summer. Leeks can tolerate 4 to 5 low temperatures and can also safely overwinter with open green leaves.

Leeks do not have high requirements for light, are relatively shade-tolerant, too strong light, have rough leaf tissues, more fibers, and poor quality; But it should not be too weak, the light is too weak, the plant has less photosynthetic products, poor tillering ability, low yield, and the leaves are yellow, the leaves are small, the fiber is less, and the quality is improved. Therefore, it is necessary to pay attention to the density when planting. The roots in the underground part of the leek store a large amount of nutrients, which can be used for tillering and leaf growth.

In the absence of light or low light, the plant can grow for a period of time, but does not form chlorophyll and becomes a leek. Leek root system is shallow, it is advisable to choose deep soil layer, good air permeability, containing more organic matter of sandy loam soil cultivation, and require high soil moisture (80 90), generally combined with fertilization to water. For leeks to be abundant, it is necessary to keep the soil moist and sufficiently fertile, especially nitrogen fertilizer.

The leaves have internode cambium.

Leaf sheath envelope, parallel veins, lanceolate, fibrous roots.

The long elephant barnyard grass, eating a little spicy, green, white umbel-shaped inflorescence, the seeds are divided into three petals, haha, to be continued

The stems of leeks are divided into above-ground stems and underground stems.

The aboveground stems are pseudostems and flower stems, and the pseudostems are formed by the delicate leaf sheaths hugging them layer by layer; The flower stem, that is, the flower stem (stem of the flower), is green to dark green, generally about 30cm high, and about 4mm thick, but the height and thickness of the stem vary greatly between different species and varieties.

Some of the varieties used in ordinary leeks can reach a height of about 50 cm and a thickness of more than 7 mm.

The underground stem is a vegetative stem, and the vegetative stem of a two-year-old leek is shortened and conflated, which is called the stem disk.

The top of the stem disc is the terminal bud, surrounded by raw leaf sheaths, and the base of the leaf sheath is slightly hypertrophied, also called bulb.

The short stems continued to grow upwards year by year, and tillering occurred one after another. After two or three years, with the extension of the short stem of the tillering plant, a rhizome is gradually formed.

Tillering buds occur first in the upper leaf axils of the top buds close to the bud end during tillering, and the tillering buds are wrapped in the leaf sheath of the original plant at the beginning, and then with the progress of growth, the leaf sheath is broken and a new tillering plant is formed, the growth state of leeks.

Cross-section of a leek tiller.

The tillers are clustered in clusters.

In the year of spring leek sowing, when the plant has 5 or 6 leaves, tillering can occur; Plants that are more than two years old are tillered 2 3 times a year, and the tillering time is mainly in the cool spring and autumn, and the number of tillers is roughly 1 3 (with 2 as many) each time.

Tillering power is one of the important indicators to identify the quality of leek varieties, and the number of tillers and tillers of different types and varieties of leeks have great differences in their annual tillers.

There are two types of leek stems, one is a flower stem that grows on the ground (flower stem) and the other is a vegetative stem (bulb) that grows underground.

1) Flower stem: In the reproductive growth stage of leeks, the apical buds of the stem disc develop into flower buds, and flower sprouts (also called leeks) are extracted. The flower stem is about 50 cm high, and there are total bracts at the top of the flower stems, and there are flower organs in the total bracts. The flower stem is the channel through which the leek plant transports nutrients for its flower and fruit development.

2) Vegetative stem: The vegetative stem is an oblate disc-shaped stem with a leaf sheath at the top and a root system around it, which is called a "stem disc". Its apical bud is surrounded by the lower part of the leaf sheath and does not freeze to death in winter.

With the increase of plant age and tillering year by year, the vegetative stem continues to extend to the ground into branch-like branches, so it is also called "rhizome". The vegetative stem is the meristem of the new roots, new leaves and tiller buds of leeks, and is also an important organ for storing nutrients in leeks in winter.

There are two kinds of leek stems: vegetative stems and flower stems, the vegetative stems are located underground, and the flower stems are born on the ground. The vegetative stem of the one- and two-year-old leeks is an oblate cone, called the "stem disk". The apex of the stem disc has a terminal bud in the center, surrounded by leaf sheaths, and the lower part is rooted.

As the leeks age and tiller year by year, the vegetative stems form branch-like branches, called "rhizomes". The base of the rhizome is fibrous roots, and the upper part forms a small bulb. The bulb has dry leaf sheaths on the outside that form fibrous scales.

The tissue of the bulb is hard and can store nutrients. The life span of leek rhizomes is 2 3 years, with an average of 1 40〜1.

The velocity of 57 cm extends to the surface, and the old rhizomes of perennial leeks gradually senesce and disintegrate. The vegetative stem is an important reservoir of nutrients for leek plants. After the vernalization stage, the plant differentiates from the flower bud of the bulb, the flower bud continues to elongate into a flower stem, the flower stem section is semicircular or nearly round, and the top is a conical flower bud, which blooms and bears fruit after scattering the bud, and the flower stem and flower bud become leeks.

The stems of leeks are very short and buried in the soil, making them invisible at all.

The most suitable germination temperature for leeks is 20, the minimum germination temperature is -3, and germination will be affected if it is higher than 25. Leek shelter is a long-day, medium-light type of plant, in the reproductive growth stage requires a long period of light, fertile soil rich in organic matter and good air permeability soil is suitable for the growth of leeks.

Leeks are mainly cultivated throughout the country, and potatoes are mostly grown in warm and humid places. The temperature of leeks should not be too high, although the temperature can speed up the growth of leaves, but it is easy to be burned, it is best to control the temperature between 19-23.

Although leeks have strong drought tolerance, suitable water can ensure the healthy growth of leeks, and the watering work must be reasonably adjusted according to factors such as soil and weather changes.

Leeks have strong adaptability to soil, and can be cultivated regardless of sandy soil, loam, clay and other soils, but the adaptability to salinity at the seedling stage is weak, and the soil salt content does not exceed it.

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There are you zhi to dao

The right to reply.

Leeks are perennial evergreen herbaceous plants with perennial roots, hardy and prefer to grow in a humid and fertile environment, with burnt yellow leaf tips in full sunlight and dry environments. Like most alliums, leeks have bulbs, fibrous roots, and slender underground stems. The dark green leaves are elongated, flattened, ribbon-like, and the closed leaf sheath forms a pseudostem; About 10 30 cm long and about cm wide, with single leaves clustered, growing from a pseudostem (leek).

The flowering and fruiting stage is July to October, the flower stems grow from the leaf bunch, and the total flower buds are triangular, which is the apical umbrella inflorescence. The bracts are white membranous, with 20 30 florets in them, the flowers are white, 6 stamens, 1 pistil, and an ovary in the middle. The flowers bloom sequentially from the outside to the inside.

The fruit is capsule, green triangular in shape; Black hemispherical seeds, flattened with edged edges. The root of leeks has a pungent taste and a warm nature; into the liver, stomach, and kidney meridians.

It has the effect of warming and appetizing, promoting qi and blood, tonifying the kidney and helping yang, and dissipating stasis.

Leek leaves are sweet, pungent and salty, warm in nature, and enter the liver, stomach and kidney meridians. Warm and circulate qi, disperse stasis and detoxify.

Leek seeds are spicy, salty, and warm, and enter the liver and kidney meridians. Nourish the liver and kidneys, warm the waist and knees, and strengthen the yang and essence.

Whole leeks can nourish the kidneys and stomach, inflate lung qi, disperse stasis and stagnation, calm the five organs, carry out qi and blood, stop sweating and astringency, and dry hiccups.

It is mainly used for the treatment of impotence, **, spermatozoa, polyuria, cold pain in the abdomen, deficiency and heat in the stomach, diarrhea, white turbidity, amenorrhea, leucorrhoea, low back and knee pain and postpartum hemorrhage.

Liliaceae herbaceous plant leek leaves and bulbs. It is also known as grass stalactite, yang grass or aphrodisiac grass. It is cultivated in most parts of the country. It is generally taken in spring and summer. Remove the roots, wash and cut into sections.

My grandmother's house has leeks that are particularly delicious.

Leeks (a.). tuberosum rottl. ex spreng., aliases: abundant book, grass stalactite, yang grass, lazy cabbage, long-lived leek, aphrodisiac grass, flat cabbage, etc.; It is a perennial herbaceous plant of the lily family, with a special strong odor, the rhizome is horizontal, the bulb is narrow and conical, and it grows in clusters; Scaly outer skin yellowish-brown, reticulated fibrous; leaves basal, strip-shaped, flattened; Umbel inflorescence, apical.

Leaves, flowers and flowers are eaten as vegetables; Seeds can be used in medicine, which has the effects of tonifying the kidney, strengthening the stomach, refreshing, stopping perspiration and astringency. In traditional Chinese medicine, some people call leeks "intestinal cleansing grass". Leeks are adaptable, cold and heat tolerant, and are cultivated everywhere throughout the country.

Leeks belong to the lily family perennial root vegetables, which are adaptable, cold and heat resistant, and are cultivated everywhere in China. In many areas in the south, it can be produced all year round, although the aboveground part of the north dies in winter, the underground part goes into dormancy, and the topsoil thaws in spring and germinates and grows.

Leek, also known as leek, sunrise grass, belongs to the lily family, allium perennial root herbaceous plants. It is widely distributed and cultivated in all parts of the north and south of China.

Leeks are mainly eaten with young leaves and tender flower stems, which are tender and fragrant and nutritious. Each 100g of fresh leeks contains carbohydrate g, protein g, fat vitamin C 39mg, carotene mg, and also contains a variety of mineral elements, vitamin B1, vitamin B2 and volatile sulfides. Leeks can be stir-fried or stuffed, and they also have certain medicinal properties.