Is the latest eucalyptus poisonous?

Eucalyptus is the general name of all species of the genus Eucalyptus. There are about 808 species and 137 subspecies or varieties of eucalyptus, among which there are more than 100 species with important economic use. the mature period is relatively loose and fir is short, and it can be used in five to seven years. Pine and poplar are among the three fast-growing trees recommended by the Food and Agriculture Organization of the United Nations. Let's take a look at whether eucalyptus is poisonous.

Is eucalyptus poisonous?

Eucalyptus is not poisonous. Research by the Eucalyptus Research Center of the State Forestry Administration shows that eucalyptus is not only non-toxic, but also can be directly used by animals and human beings. Eucalyptus has eucalyptus oil, a kind of natural compound extracted from eucalyptus leaves, which can be used in cosmetics. For example, Head & Shoulders also contains eucalyptus essence, and many of the raw materials of medicine contain eucalyptus oil. it can also be used as oral, rhinitis, expectorant, cool oil, throat tablet sugar, expelling wind ointment and other medicinal materials. Eucalyptus oil contains cineol, which is mainly used in toothpaste, mouthwash, food and medicine.

Rumors about the harm of eucalyptus

1. Fertilizer extractor: eucalyptus has a great demand for fertilizer and nutrients in the soil. where eucalyptus is planted, the soil fertility decreases or even dries up, and the original vegetation is seriously damaged because it does not get enough fertilizer and nutrients, causing land degradation. Soil and water conservation is deteriorating, and the land is barren, so it is impossible for other plants to survive. The proportion of soil intensity erosion increases year by year, and landslides and flood disasters increase.

2. Overlord tree: eucalyptus has great inhibition to local native, native and native species. When it grows, other species cannot grow, and will slowly retreat, resulting in that eucalyptus forests are bare on the surface. There are no grasses, shrubs, small trees and all kinds of Chinese herbal medicines on the ground cover. Other species can not survive with it.

3. Poisonous trees: some chemical products with strong toxicity and long toxic effect will be applied when planting eucalyptus trees. Once this product is applied to the land, it will be difficult to clean up, cause great pollution to water quality, and cause inestimable harm to people and animals after drinking it. In addition, the smell of eucalyptus is irritating and toxic to the human body and will threaten the health of the local people.

Query on the harm of Eucalyptus

1. Question 1: eucalyptus is a "pump", which will drain water and cause drought. This is one of the most common questions about eucalyptus. Eucalyptus has a significant decline in groundwater due to its large transpiration, just like a "pump" causing land drought and water depletion. In this regard, the results of scientific research show that the water use efficiency of eucalyptus is quite high compared with other conifers, and the role of eucalyptus in water conservation, soil and water conservation and climate regulation is not inferior to that of other tree species. A large number of field observation experiments also show that eucalyptus does not directly cause drought. Data observed by scientist Bailly and others for eight years also show that most of the water in the big-leaf eucalyptus forest seeps into the soil and can effectively conserve soil and water.

2. Doubt 2: eucalyptus is a "fertilizer absorber", which will lead to "ground failure". Many people who have been to eucalyptus trees or have personally planted eucalyptus trees say that eucalyptus trees have a great demand for soil fertilizer and nutrients, but the fertility of the land planted with eucalyptus trees has declined or even dried up, and other plants reintroduced on the soil where eucalyptus trees have been planted cannot survive at all. In China, Bai Jiayu, a scientist who has been engaged in eucalyptus research for many years, found that eucalyptus has a more efficient ability to use nutrients than other tropical tree species by measuring the nutrient uptake of eucalyptus. In foreign countries, the scientist Liani also through the observation of eucalyptus soil found that eucalyptus in the rapid growth period, the nutrients absorbed during the period will be returned to the soil.

3. Doubt 3: eucalyptus is a "overlord tree", which will inhibit the growth of other species. It has been pointed out that eucalyptus has a great inhibitory effect on native, native and native species, and other species cannot live with it. Indeed, according to scientific common sense, alien species may cause harm to the native ecological environment. However, scientific research also found that almost all harmful exotic plants are herbaceous plants, while the ecological harmfulness of eucalyptus as trees has not been really confirmed. In addition, it is also a normal phenomenon in nature that some tree species are sensitive to the sap or rotten leaves of other tree species. This has been investigated in Leizhou Peninsula, Guangdong Province, and the results show that the plant diversity of the local forest has not decreased as a result of planting eucalyptus.