Diversity Investigation Of Forestry Pest In Huimin County Of Shandong Province

Forestry plays an important role in ecological security and ecological civilization construction.Forest pests seriously threat to the healthy development of our forestry.Huimin County is the implementation of yellow Bohai region and "yellow and blue" national strategy of China,with regional advantages,rapid development of forestry and the tree planting area,plant diversity,complex structure,and its pest species diversity,pest risk distribution and the background are not clear,it is necessary to define the pest occurrence and harm.In this study,forestry pests diversity of Huimin County 3 streets,11 towns were preliminary studied through the combination of field survey and standard investigation,field and indoor pest identification by combining survey and depth classification statistical data analysis combined with the method of pest occurrence possibility analysis and risk assessment of a combination which provides basic data for scientific prevention and control of harmful organisms.147 species of forest pests were identified in this study.Among them,there are 64 diseases,including 45 leaf diseases,17 branch diseases and 2 root diseases.Among these diseases,poplar canker disease and willow canker disease are the most serious,to the forestry production in Huimin county;Forestry harmful insects belonging to five categories of 83 species,including 29 defoliators,9 stem borers,34 vermin and twigs,8 underground pests and 4 seed pests.Apocheima cinerarius Ershoff and Micromelalopha troglodyte are the most serious defoliators;Anoplophora glabripennis,Batocera horsfieldi and Apriona germari are the most serious stem borers.The occurrence of forest diseases is mainly concentrated in Madian town,Wei Ji town,He Fang street,urban area and the surrounding large forest bases.The insect pests are mainly concentrated in Weiji town,Huji town,He Fang street and the surrounding large forest bases.The areas of diseases and insect pests were overlapped obviously.The forestry pests in Huimin County are rich in species,relatively concentrated in distribution,relatively light in harm,and highly overlapped in the areas where diseases and pests occur.The above research provides important theoretical basis and data support for the scientific prevention and control of forestry pests in Huimin County.It is also of great significance to the prevention and control of forestry pests in Binzhou city and even Shandong province.