天山野苹果林苹果小吉丁虫虫口密度与林分因子的关系  

Relationship between the stand factors and population density of Agrilus mali Matsumura in wild apple trees in Tianshan Mountain

作　　者：孔婷婷[1] 刘爱华[1] 张静文[1] Kong Tingting;Liu Aihua;Zhang Jingwen(Institute of Forest Ecology,Xinjiang Academy of Forestry,Urumqi Xinjiang 830000,China)

机构地区：[1]新疆林业科学院森林生态研究所

出　　处：《中国植保导刊》2019年第11期42-46,共5页China Plant Protection

基　　金：新疆维吾尔自治区公益性科研院所基本科研业务经费项目（KY2016069、KY2017024、KY2017026）;国家重点研发计划（2016-YFC0501502）

摘　　要：为了解天山野苹果林苹果小吉丁虫的发生与林分因子的关系,就海拔、坡度、树高、胸径、枝粗和枝方位等6个因子对苹果小吉丁虫虫口密度的影响进行了分析。结果表明,苹果小吉丁虫的虫口密度在海拔1350~1450 m显著高于1150~1250 m和1250~1350 m,坡度10°~20°显著高于20°~30°,胸径>30 cm的野苹果树显著高于胸径<30 cm。相关分析表明,苹果小吉丁虫虫口密度与海拔、坡度呈显著负相关,与野苹果树胸径、枝粗呈显著正相关。利用海拔、胸径这2个关键因子与苹果小吉丁虫虫口密度的关系建立多元线性回归方程,以期为苹果小吉丁虫的防控提供一定的依据。To understand relationship between occurrence of Agrilus mali Matsumura and the stand factors of wild apple foresrty,six factors were evaluated,including altitude,gradient,tree height,diameter at breast height(DBH),branch thick and orientation.The results showed that the pest population density at 1350-1450 m was significantly higher than that at 1150-1250 m and 1250-1350 m,higher in gradient of 10°-20°than that of 20°-30°and higher in the DBH above 30 cm than that under 30 cm.There was a significant negative correlation between population density and elevation,as well as gradient,while a significant positive correlation between population density and DBH or branch thick of wild apple trees.Multiple linear regression equation was established between population density and two key factors of altitude and DBH,so as to provide some basis for the prevention and control of A.mali.

关 键 词：新疆野苹果 苹果小吉丁虫 虫口密度 林分因子 海拔 胸径 

分 类 号：S436.611.29[农业科学—农业昆虫与害虫防治]