【摘要】 在苹果生长的前期 ,将苹果树分为 1 8个区 ,研究每个区立体空间中的昆虫群落结构。结果分析表明 :苹果树中昆虫 (及螨类 )共有 2 7种 ,其中植食性害虫 1 5种 ,种数占总量的 5 5 5 6% ,天敌昆虫 1 2种占 44 44% ;昆虫群落在树上、下、中及内外层差异大 ,而在东、南、西、北 4方位上差异小。通过频次比较的方法与 χ2 检验得出 :梨星毛虫IlliberispruniDyar、山楂叶螨TetrangchusviennensisZacher、顶梢卷叶蛾SpilonotalechriaspisMeyrich均符合负二项分布 ;采用聚集指标法计算得出 :梨星毛虫、山楂叶螨、顶梢卷叶蛾均为聚集型分布 ,另外 ,山楂叶螨的I值最大 ,聚集度最高。以上的研究为苹果园有害生物综合治理提供理论依据更多还原

【Abstract】 In the early development of apples,an apple tree was divided into 18 areas to study the spatial structure of the resident insect community.The results showed that:(1)there were 27 different species,including mites,in which 15 were phytophagous, accounting for 55.56% of the total,and 12 were beneficial, comprising 44.4% of the total; (2)community diversity was related to spatial orientation in the tree (top, bottom, middle) than aspect (east,west,south and north).By comparing frequency of occurance using the χ 2 test, Illiberis pruni Dyar, Tetrangchus viennensis Zacher and Spilonota lechriaspis Meyrich were found to have a negative binomial distribution;while I. pruni,T. viennensis and S. lechriaspis had an assembly distribution.At the same time,the I value of I. viennensis was the maximum recorded and the degree of assembly was also the highest.This research can provided theoretical basis for the use of IPM in apple orchards.更多还原