What does the cactus thorn have to do with the environment

Cactus is native to high temperature and arid places, long-term natural selection and evolution, so that in order to maintain water to the greatest extent without loss, the leaves have become today's needle type, and another role is to protect themselves from being eaten by animals, survival of the fittest, and the existence of each life form is the result of natural selection.

Indoor potted cactus should be selected as a small, flower-rich spherical species, and this kind of plant should not be considered drought-tolerant in cultivation, and ignore its normal watering and fertilization. Indoor cultivation, which can be used on the windowsill to create a high-temperature, high-humidity enclosed space with lead wire and plastic film, most cacti not only grow fast but also have a brilliant color under such conditions. Prevention and control of rot disease:

Prevention and control of rot disease should be the main focus. First of all, improve the environmental conditions of the cultivation site, so that the occurrence and spread of pathogenic bacteria can be greatly reduced. Secondly, it is necessary to strengthen cultivation management.

Do not mix unrotted organic fertilizer in the planting soil, and the fertilizer should be light rather than thick. If you find that the watershed water is drained in time, some of the bad roots can be cut off, and the wound can be dried before planting. Regular spraying of fungicides on cacti or in the surrounding environment has a certain effect on the prevention of the occurrence of rot disease.

Commonly used fungicides are zebze, carbendazim and tobuzin.

In arid environments, thorns are cactus leaves, which degrade into thorns due to evaporation to save water.

It is important that cacti live in deserts, where there is very little water, and then the cacti gradually degenerate their leaves into thorns, just to reduce the evaporation of water.

Relate. The spines of the cactus are degraded by the leaves in an arid environment.

Thorns are the leaves of cacti, which have degraded into thorns due to evaporation to save water.

Yes, the leaves of the cactus turn into thorns to acclimatize to the environment. Natural selection, survival of the fittest, living organisms can only survive by adapting to the environment. Cacti grow in deserts, which have little moisture and an arid climate.

The cactus leaves turn into thorns to reduce transpiration and reduce water evaporation in order to survive in arid and water-scarce deserts.

There are many examples of organisms changing themselves in order to adapt to their environment.

For example: 1 Polar bears have a thick layer of fat that can withstand the cold of the Arctic.

2 Camels survive in arid deserts, and their stomachs can store large amounts of water.

3 In order to avoid the scratching of the bunk, the zebra was covered with black and white threads.

4 Frogs hibernate to ward off the cold.

5 The soft and large soles of the camel's feet make it easy for them to sink into the sand.

The leaf spines of the cactus are the result of adaptation to the desert environment, and the cactus degenerates the leaves into thorns in order to adapt to the arid environment of the desert, which can reduce transpiration and reduce water consumption. When raising cacti at home, it should be placed on the windowsill with sunlight, and when the maintenance is boring, it must be avoided from rain, and after entering the winter, it is necessary to pay attention to maintaining a good temperature, and it is best to move it to the inside for heat preservation to avoid frost damage.

Maintenance of cacti

Cactus likes the sun, during the growth period must be fully visible, give enough light, can promote growth, but in summer at noon light is stronger, pay attention to proper shading, to avoid the cactus stems and leaves are burned by Jane.

Cacti do not like fertilizer, are very barren tolerant, and long-term non-fertilization will not affect growth. In order to promote the vigorous growth of cactus, you can apply a little thin fertilizer water, and apply a thin and well-rotted liquid fertilizer every half a month during the growing season.

The palm is more drought-tolerant, during the growth period to be watered appropriately, to give the right amount of water to meet the growth can, not too much watering caused by water damp roots, after entering the winter, as the temperature of the cover Zheng drops, the growth is slow, the demand for water is reduced, to control the watering.

Calculate.

A cactus is a cactus even if it has no thorns, and it does not fundamentally change its family species. However, the thorns of the cactus will not grow up if they are broken, and the thorns of the cactus are actually mutated from the leaves in the arid environment, and they have lost the function of the leaves and play a protective role.

It will not grow new after falling off like a leaf, it will lose its life when it matures, leaving only dry thorns, unlike a leaf that is still a living body after it matures, so it can't grow after falling off, that's for sure, time will prove.

Cactus conservation tips.

Potting soil: The pot for breeding cacti should not be too large, just a little larger than the plant, and the soil should be slightly alkaline soil with ventilation and drainage.

Watering: It can tolerate drought, don't water too much, just keep it semi-wet, stop watering during the dormant period, and drain it in rainy weather.

Seeing light: It likes sunlight, sufficient light can promote its growth, to see more light, in the middle of summer to be slightly shaded, to prevent sunburn.

Repotting: Its root system is developed, and it should be repotted once every 1-2 years during the breeding period, and the time can be carried out in early spring or autumn, and the old roots, rotten roots, etc. should be cut off when changing pots.

The thorns of the cactus are actually evolved from the leaves. When the area of the leaves becomes smaller, the evaporation of water also decreases, which allows the cactus to minimize the loss of water in the scorching sun, so that it can survive in the desert.

The thorns on the cactus are also very important, that is, to play a protective role, of course, to improve the ability to survive. Honorific socks.

The stem of the cactus becomes fleshy and pulpy, which is conducive to storing a lot of water, and the main part of the plant's water evaporation is the leaves, in order to reduce water loss, so its leaves slowly degenerate, and even some become needle-like or thorny.

The spines of the cactus are an important part of it, which plays a role in preventing external damage and retaining moisture. If the cactus is devoid of its thorns, it may face a greater survival challenge.

First, a cactus without thorns may be more susceptible to outside damage. The stinger protects against many potential threats such as herbivores, competitors, and environmental conditions. Without thorns, cacti can be more easily injured or destroyed by these factors.

Second, cacti that don't have spines may lose moisture more easily. The thorns protect the cactus from evaporation and water loss, and without the thorns, the cactus may be more susceptible to water loss, affecting its growth and survival.

If it doesn't have spines, it may be more vulnerable to animal attacks, and its living space will be smaller. If you don't do it well, you can be wiped out by other animals.

Thornless cacti are excellent fodder for livestock. Cactus stems contain triterpenes, malic acid, and succinic acid.

and alkaloids, which can cure diseases. The spiny type can be used as a courtyard green lily; The branches are used as fuel or supports. The Great Cactus in the desert is a traveler.

of temporary reservoirs. Some species can be used to raise cochineal.

Synonyms: Xianrenquan ("Illustrated Guide to Chinese Plants".

The stem of the plant cactus.

Animal and plant form: perennial evergreen fleshy herb, about 15 cm tall. Stems globose, elliptic or obovate, green, fleshy, with 12-14 longitudinal ridges, with clusters of pinpricks, usually 6-10 per cluster, rarely up to 15, 2-4 cm long, stiff and straight, yellow or yellowish-brown, varying in length, radial, with dense white hairs in the spiny bushes.

Medium-small, born in thorn bushes, early fall. The flowers are large, lateral, born in thorn bushes, pink, open at night, long trumpet-shaped, 15-20 cm long, the outer coat of the flower tube is covered with scales, and the axils of the scales have long hairs. Berry.

Spherical or ovate, without spines. The seeds are small, many. Flowering period is from May to June.

Sexual taste: sweet, flat.

1. "Fujian Folk Herbal Medicine":"Sweet, cold. "

2. "Lu Chuan Materia Medica":"Cold, slightly acidic. "

3. "Hunan Drug Journal":"Light, flat. "

Indications: Treatment of pulmonary fever cough, blood in sputum, carbuncle, soup burns.

1. "Fujian Folk Herbal Medicine": "Slip the intestines, relieve fire, and eliminate carbuncles." ”

2. "Luchuan Materia Medica": "Clear the heart and lungs, stop bleeding." Treatment of pulmonary fever cough with blood in sputum. ”

3. "Hunan Drug Chronicle": "Reduce swelling and relieve pain, promote qi and blood, dispel dampness and reduce fever, and build muscles." ”

Usage and dosage: Internal: decoction, 3 5 yuan (fresh 2 3 taels). External use: Pound or pound juice to apply.

Recipe: 1. Treat soup burns, snake bites: cactus whole grass, pound the juice and coat it. ("Hunan Drug Chronicle") 2, treatment of sores and poison in the palms: cactus whole herbs, mashed compress. ("Hunan Medicine") 3, treat stomach pain.

Cactus balls (peel off) 3 taels, decoction in water, once to 2 times a day. (Fujian Folk Herbal Medicine).