2. Air impermeability Visitors trampled and irrational paving caused artificial compaction, poor ventilation, poor air permeability, and inhibition of root growth.
Most of the cherry trees along the road in the park are subject to human trampling, as well as excavation and filling. The soil compaction causes some of the roots to die, and the tree vigor also weakens.
3. Poor soil texture Piles of cement, lime, slag, household waste, etc. under the cherry tree will deteriorate the physical and chemical properties of the soil. Sloping the sewage, putting the sewage underground passage around the roots of Sakura, etc. will also cause soil contamination. In addition, severe air pollution can also affect the growth of cherry trees.
4. Diseases and Insect Hazards When the cherry tree enters old age, its ability to resist diseases and insect pests weakens. Once pests and diseases occur, the tree vigor will weaken.
5. Mechanical trauma and artificial damage Cherry trees on the roadsides, scenic areas, and specialized parks are often traumatized by automobiles and other machinery. Some tourists take pictures on their trunks, break branches and other acts will affect the healthy growth of cherry blossoms.
Based on the analysis of the causes of the debilitating cherry blossoms, identify the dominant factors that cause debilitation. Generally, we must first look at its site conditions to observe and inspect the soil for nutrients, ventilation, air permeability, and whether it is polluted, and whether the leaves, branches, and roots of the cherry tree are damaged (natural and artificial) and polluted. Pests and diseases have occurred and the main causes have been identified. If cherry trees are weakened due to various reasons, effective measures should be taken to remedy the disease and perform comprehensive rejuvenation in a step-by-step manner.
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