摘要
2009年至2011年,在陇东黄土高原苜蓿田,分苜蓿返青期、第一茬苜蓿刈割后、第三茬苜蓿刈割后3个时期调查地下害虫的种类、数量及不同深度分布规律。结果表明,该区域苜蓿地下害虫主要有11种,平均密度为18.2头/m2,主要类群按其所占比例大小依次为金龟甲类、金针虫类、网目拟步甲、蝼蛄类和地老虎类,优势种类为黑绒鳃金龟和华北大黑鳃金龟。
From 2009 to 2011,the species,quantity and distribution regularities of underground pests in different soil depth were investigated at turning green stage,after the first and third mowing.The results showed that there were eleven main underground pests species,with the average density of 18.2 heads/m2.Chafers,Elateridae,Opatrum subaratum Faldermann,Gryllotalpidae and cutworm were the main groups according to proportions.Maladera orientalis Motschulsky and Holotrichia diomphalia Bates were dominant species.
出处
《植物保护》
CAS
CSCD
北大核心
2013年第6期124-129,共6页
Plant Protection
关键词
苜蓿
地下害虫
种类
垂直分布
alfalfa
underground pests
species
vertical distribution
