Plants not only have many roots, but also have long roots. Roots are several times or even dozens of times more than stems on the ground. For example, jujube trees on the hillside are generally three or four meters high, and the vertical depth of their roots is above 10 meters; A wheat has more than 70,000 fibrous roots, about 500 meters long. If you add up its roots and hairs, the total length can reach 20 kilometers.
Why do plants grow such huge roots? There are two main functions. On the one hand, it absorbs fertilizer and water from the soil. This is because plants need to absorb a lot of fertilizer and water to supply the growth and fruiting of branches and leaves. The more developed the roots of plants, the more lush the branches and leaves. On the contrary, the branches are thin and yellow, and the growth and development are poor. On the other hand, the roots of plants can resist all kinds of disasters in nature, such as strong winds, heavy rains and floods. If plants want to grow tenaciously, their roots must be developed.