Detailed explanation of cactus leaves and roots

   cactus thorn

   almost every cactus plant has a different thorn. Thorns are often divided into two types, namely, middle thorn and Zhou thorn. The middle thorn is born in the center of the thorn seat, the quality is hard, the week thorn is born on the edge of the thorn seat, or sparsely or densely phase with each other. There may be obvious differences between Zhou thorns and middle needles.

For example, the middle thorn is longer, hard and strong, while the weekly thorn is thin and flexible. This is because the functions of the two are different, the thorn protects the plant from the outside world, and it usually has a color that can attract attention from a distance. Weekly thorns are often white and slender, and their main function is to protect plants from excessive ultraviolet light by reflecting sunlight.

The picture shows: cactus thorn

   has many specially shaped thorns in addition to the middle thorn and the periphery thorn. However, these special thorns are limited to certain species, not the characteristics of a genus. More common are thorns with hooked ends, such as many species in the genus MammZZarla, which are particularly worrying because people can easily get hooked when they are not paying attention. A strong animal may pull the whole cactus out of the soil, so the cactus can be attached to the fur of large animals, thus achieving the purpose of breeding in an easy place.

The most worrying thorns in    are not the giant needles of some species of the genus Scutellaria, but the so-called barbs. The hookthorn is only found in the subfamily cactus and is an important basis for the identification of these species. The longest hookthorn is only a few millimeters long, very slender and brittle. Many small barbs can be seen clearly only with the help of a high-power magnifying glass or microscope. Barbs are easy to stick into the skin and break as soon as they enter the skin. Because of the barb, the muscle activity will make the broken thorn deeper and deeper.

Cause pain for several days until the broken thorn is finally picked out. So friends who like cactus plants should be extra careful.

   is usually the only epiphytic cactus without thorns. On the contrary, the thornless cactus in the dry and open area is a special case. Such as black jade, truffle jade and planetary planets, at least people already know that black feather jade plants contain poisonous sap, which can replace the position of sharp thorn protection. The main ingredient of its venom is the alkaloid Mexicalim. This is a highly toxic drug used by the Indian natives of America. In addition, the nearly unstinging snake whip column also contains a special chemical that can treat heart disease-glycobodies. To this end, people even in the greenhouse to cultivate a large number of snake whip column "Queen of the Night." The lotion that exudates from mastoid plants immediately after injury also protects the plants from insects.

.

Except for the different species of thorns,    has its own advantages in the length, quantity and color of thorns. There is no significant difference in thorn morphology of the same species of cactus. But the thorns of the same plant are different. The number and shape of thorns are closely related to nutrients, water and light conditions.

   cactus root

The picture shows the root system of cactus

   people do not fully understand the root structure of most plants, as well as cacti. So far, people can only distinguish a few different root types. The vast majority of cactus plants have very long and slender fibrous roots to facilitate the absorption of surface water in as large an area as possible. Because if the rainfall is not large, it is impossible for the water to go deep below the surface, so in the early dry areas, the roots that extend far away and have access to groundwater are of great benefit to the growth of plants.

. That's for sure,

The roots of cacti cultivated in flowerpots are completely different from those of wild cacti in the desert, but this is not harmful to their growth. Cactus with radish root system, such as Goubaoshan, black feather jade, rock peony and other species have strong drought tolerance, and the roots of these species can also preserve water. Because in the hot summer, the temperature a few millimeters underground will be significantly lower than the surface. Compared with the plants above the ground, the underground roots are less susceptible to high temperature.