What are the hazards of eucalyptus trees in the myrtle family? How do you plant it?

Eucalyptus is an evergreen tree of the myrtle family, 20 meters high, and generally grows on sunny plains, hillsides and roadsides; it grows fast, has strong drought resistance, and has a wide range of wood uses, but it is prohibited in many parts of the country. this is because it does a lot of harm. So, what are the hazards of eucalyptus?

First, the introduction of eucalyptus!

1. What is the name of eucalyptus?

Eucalyptus, also known as Eucalyptus, white diesel, mang, big-leaf eucalyptus, is an evergreen tall tree, 20 meters high, with a crown shape of steeple, multi-branch and drooping branch, etc. the leaves can be divided into three types: young leaves, middle leaves and mature leaves. the bark is dark brown and has irregular oblique grooves.

2. Where is the origin of eucalyptus?

Eucalyptus is native to mainland Australia. Eucalyptus is mainly cultivated in the south and southwest of China, such as Fujian, Guangxi, Guangdong, Yunnan and Sichuan provinces. It has deep roots and strong wind resistance, no matter in coastal or inland areas, plains or high mountains, as long as the annual precipitation is 250-4000mm.

Second, what are the hazards of eucalyptus?

Harm 1, will lead to the decline of land fertility and even depletion.

The root system of eucalyptus is particularly developed, and there is a great demand for fertilizer and nutrients in the soil. A large amount of fertilizer in the soil will be absorbed, resulting in the decline or even depletion of soil fertility, and the original vegetation will be seriously damaged because it does not get enough fertilizer and nutrients. It is impossible to introduce other plants at all. In fact, scientists at home and abroad have found that eucalyptus only absorbs a large amount of nutrients at the initial stage of afforestation, and then returns the absorbed nutrients to the soil.

Harm 2, it will lead to land consolidation and soil degradation.

Eucalyptus has strong water absorption, planting this kind of tree in a large area will lead to soil consolidation, soil desertification, soil and water conservation, landslides and floods, and endanger the local natural environment and ecological balance. In fact, the results of scientific research and a large number of field observations have proved that eucalyptus does not directly cause drought, but can effectively conserve soil and water.

Harm 3, it will inhibit the growth of other species.

Eucalyptus inhibits the growth of other species, that is, when it grows, other species cannot grow, and animals in the forest will decrease or even become extinct, resulting in the decline and degradation of native species, resulting in a very single plant species, reducing the level of biodiversity and destroying the biological food chain. In fact, after scientific research, it is found that almost all harmful exotic plants are herbaceous plants, while eucalyptus trees as trees have not been proved to have any ecological harmfulness.

Third, how to plant eucalyptus trees?

Eucalyptus is not really harmful, and it also has many functions that people do not know. For example, its leaves can extract eucalyptus oil for toothpaste, mouthwash, food and medicine; for example, its roots can be used as food, water and fuel; for example, its trunk can make paper, and the whole plant can be used as street trees, wind-proof sand-fixing forests and landscaping trees. In other words, there are many uses for planting eucalyptus, so how to grow eucalyptus?

1. Land preparation

Eucalyptus can grow well whether in mountains or plains, and it is suitable for growing in acidic red soil, yellow soil and deep alluvial soil, but it grows well in places with deep, loose and well drained soil. After selecting the plot, it is necessary to prepare the ground and dig the pit again. When digging the pit, the row spacing is 3m × 2m, the specification of the pit is 1250px × 1250px × 1000px, and the finished product is arranged in zigzag shape.

2. Preparation

Eucalyptus should also apply basic fertilizer in the pit before planting, which can be fertilized one month before planting, and can also be mixed with ammonium, phosphorus and potassium fertilizer and organic fertilizer when backfilling the soil. The base fertilizer is usually fermented municipal solid waste or barnyard manure.

3. Planting

You can choose to plant in spring, because the temperature in spring is suitable, Rain Water is abundant, and the survival rate of seedlings is higher; seedlings should choose strong seedlings and carry out disease and insect control treatment; then the seedlings can be unbagged, deeply planted and compacted; we should pay attention to the fact that the seedling system is relatively fragile and should not be in direct contact with base fertilizer so as not to cause root burning.

4. Cultivation and management

Within 3-6 months after successful planting, adequate light and nutrients should be ensured, weeds should be removed and soil loosening should be carried out. Eucalyptus needs more fertility in the first 3 years, so topdressing should be timely. Topdressing should be determined according to the growth of eucalyptus. The diseases of eucalyptus include scorch wilt, bacterial wilt, stem rot, gray mold and so on.

The above is the introduction of the harm of eucalyptus, in fact, these hazards only occur in the early stage of afforestation (the first 8-10 years), and then its effect of water storage and fertilizer storage will be gradually reflected. Eucalyptus trees are beautiful and evergreen. According to the above planting methods, eucalyptus trees can be planted successfully.