First, the injection method, injecting diesel fuel, quicklime water, etc. into the trunk or roots of the tree.

Second, the ring-cutting and smearing method, first ring-cut the trunk, but do not cut the cambium layer of the trunk, because damage to the cambium layer will hinder the delivery of the drug to the roots. Then apply a diesel solution of 2,4-butyl ester on the circumcision area. Since the agent is easy to transport to the roots, it can kill the roots relatively quickly. It can be combined with the injection method for better results.

Third, root irrigation method. When root irrigation, you should pay attention to whether there are any food crops around, otherwise it is easy to accidentally damage. When irrigating the roots, first surround the base of the tree with soil, and then use cyclozinone mixed with water to irrigate the roots of the tree. This absorption method is relatively slow, but it can be combined with spraying branches and leaves to improve the killing efficiency.

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A tree has a wooden trunk and branches plants that can survive for many years. Generally speaking, an arbor is called a tree. The main trunk is one plant, and the branches are higher than the ground and can form a crown. There are many kinds of trees. Trees are a general term for woody plants, including trees, shrubs and woody vines. Trees are mainly seed plants. Among ferns, only tree ferns are trees. There are about 8,000 species of trees in China. Divided into banyan trees; poplar trees; willow trees; cypress trees, etc. In common parlance, relatively large shrubs are also called "trees", such as pomegranate trees, tea trees, etc. Trees are very important in reducing land erosion and adjusting the climate. Trees can absorb carbon dioxide from the air and store large amounts of carbon in their tissues. Trees and forests are home to many species. Tropical rainforests are among the most biologically diverse places in the world. Trees provide shade and protection, wood is used for construction, charcoal is used for heating and cooking, and fruits are used for food. Forest areas are declining around the world in order to increase the amount of land available for agriculture. Due to its longevity and usefulness, trees also appear in many myths. A 2015 report estimated that there are approximately 3 trillion large trees on earth, of which approximately 1.39 trillion are in the tropics and subtropics, 610 billion are in temperate zones, and 740 billion are in the boreal forests surrounding the Arctic. Compared with 11,000 years ago, human activities have caused the number of trees to decrease by half. At present, humans remove about 15 billion trees every year and only plant back about 5 billion trees.