Chengdu Southwest Forestry Harmful Insect Investigation And Risk Assessment Studies Four Kinds Of Harmful Insects

Since the second national forest pest survey conducted in 2003 and 2007,there have been no large-scale survey of harmful insects in forestry within 10 years.In view of the frequent occurrence of harmful insects in local forestry and the discovery of harmful insects,Insect investigation.According to the Sichuan Provincial Forestry Department to actively respond to the national second national forest pest survey,in August 2014 issued the"Sichuan Province,the survey of forestry pest technology program".In order to grasp the occurrence,harm and distribution of harmful insects in the southwest of Chengdu(Wuhou,Shuangliu,Xinjin,Pujiang and Qionglai),and the basic situation of host plants,Improve and enrich the forest harmful insect database and specimen room in the southwest of Chengdu(Wuhou,Shuangliu,Xinjin,Pujiang and Qionglai),and provide the basis for carrying out early warning and risk management of important pests.This article through the technical program of reading,and actively set up the team.During the period from 2015 to 2017,the species and distribution of harmful insects in some of the main forestry in the southwest of Chengdu(Wuhou,Shuangliu,Xinjin,Pujiang and Qionglai)were investigated by means of investigation,standard investigation,investigation and investigation of attractant lights The scope of a systematic investigation,and four important harmful insects were risk analysis.The main conclusions are as follows:(1)The survey collected a total of 12080 harmful insect specimens,identified a total of 94 kinds of harmful insect species,belonging to 8 orders 39 subjects.Among them,leaf and shoots harmful insects 27 families 60 species;cadre harmful insect species 6 species 23 species;species of harmful insects 2 families 4 species;underground insects 1 species 1 species.(2)The survey found that the southwest of Chengdu(Wuhou,Shuangliu,Xinjin,Pujiang and Qionglai)forestry harmful insects,the Rhynchophorous Ferrugineus、Batocera lineolata Chevrolat、Parocneria orienta and Leptocybe invasa Fisher&La Salle is heavy or potentially harmful.Based on the Pest Risk Anlaysis(PRA),this paper uses the evaluation index system of the "Sichuan Forestry Pest Technology Program" to carry out the risk assessment analysis of these four kinds of forestry harmful insects,and put forward corresponding Of the prevention and control measures.(3)The results showed,In Chengdu southwest(Wu hou、Shuang liu、Xin jing、Shuang liu and Qiong lai)the Risk score of Rhynchophorous Ferrugineus is 2.21 points,For the highly dangerous harmful insects;the Risk score of Batocera lineolata Chevrolat is 1.77 points,To moderate dangerous harmful insects;the Risk score of Parocneria orienta is 1.58 points,To moderate dangerous harmful insects;the Risk score of Leptocybe invasa Fisher&La Salle is 1.99 points,To moderate dangerous harmful insects;(4)Put forward four important risk management countermeasures of harmful insects.