What methods are used to eradicate the root causes of graves?

1, the ground part of the tree should be cut off, and the roots should be dug out and pulled out as much as possible.

2. You can put a certain amount of quicklime in the visible roots to prevent re-germination. The above may need to be repeated 1-2 times, and the root will die.

Roots can be divided into four regions, the top of which is the hat-shaped structure-root cap, above which are meristem and elongation region, and then the root hair region with root hair.

The root cap is located outside the meristem at the top of the root. The high mucus in the outer cell wall can reduce the friction between roots and soil during downward growth and play a protective role. At the same time, the powder in the cell can also ensure the geotropism of the root, that is, ensure its gravitropism.

Meristem is the apical meristem located inside the root cap. Meristem cells can divide continuously. On the one hand, a small part is used to form root cap cells, while most of them grow backward and differentiate into various structures of roots. On the other hand, it keeps its original volume.

The cells in the elongation zone are developed from meristem cells, and their division ability is weakened, and the elongation axis of cells is elongated. Elongation will lead to the damage of primary phloem and primary xylem, resulting in lacunae.

The cells in the root hair area are mature cells. Root hairs are produced by epidermal hair cells, which can effectively increase the absorption area of plant roots. The root absorption area can reach 400M? .

Extended data:

The most common plants in graves

Car story: Veronica persica, a common small wild flower in spring, is often associated with Stellaria. Blue flowers are lovely, but fragile. They fall off when touched. Veronica arabica is an exotic naturalized plant, which is non-invasive and has universal diffusion. It can coexist peacefully with many native weeds and form a good carpet covering effect when flowering. An Arab woman with a lovely name and a lovely appearance.

Orychophragmus violaceus sometimes germinates in autumn, and then overwinters in the form of basal leaves. Its common name is February Blue, but it can be open until March of the lunar calendar. Dense purple flowers can form a spectacular flower sea effect, which is an excellent flower viewing plant in front of the tomb, and people are reluctant to move it. In fact, Orychophragmus violaceus is also an excellent urban wild flower in spring, with strong reproductive ability and high seed germination rate, which can grow in the gap between bricks and walls.

[hàn] When purple February orchids see the flowers of Rorippa indica, it is estimated that people will recognize them as wild mustard and rape, because they all have yellow four-petal flowers, which are highly recognizable in Cruciferae and have similar leaves, so it is difficult to subdivide them. Generally speaking, there are not too many water spinach. There are only a few scattered trees in an area, and the appearance is very ordinary. Even if it is pulled out, there will be no regrets.

Leguminosae: Vicia faba, a kind of broad bean as a vegetable, blooms here in February, and its two weed relatives will bloom in March and April. It's interesting to save the flowers of wild peas. Two deep purple wings and a wide flag flap look like a face painted with red lips.

Vicia cracca is a widely distributed wild pea, which is usually associated with the former, but its flowering period is late and its volume is large. Purple flowers form a string of racemes, and the ornamental effect is also very good. But leaves with tendrils will make it crawl around and have a strong hiding power.

Baidu Encyclopedia: Plants