Analysis of Tree Forest Diseases and Their Causes in Dahekou Forest Region
A survey and analysis were conducted on the main diseases of tree forests in the Dahekou forest area,and the causes of their occurrence were analyzed.There were 33 kinds of tree diseases in Dahekou forest region,the damage area was 2 125.7 hm2.The causes of tree diseases in Dahekou forest region were poor stand condition,weak tree growth,simple tree species and unreasonable structure.Under the condition of unsuitable water,nutrition and temperature,the growth vigor of trees is weak and the resistance to diseases is very weak.And the large area of pure forest makes the disease easy to spread,once the disease will spread quickly into disaster.
NETL
NSTL
万方数据
