【作者】 栾军波； 丛斌； 王欢； 李薇； 张伟伟； 万航宇；

【Author】 LUAN Jun-bo, CONG Bin, WANG Huan, LI Wei, ZHANG Wei-wei, WAN Hang-yu (College of Plant Protection, Shenyang Agricultural University, Shenyang 110161, China)

【机构】 沈阳农业大学植保学院；

【摘要】 采用改进的大蜡螟诱集法从辽宁36个地区(130份土样)的21个地区(45份土样)分离到昆虫病原线虫。其中0384H等5份土样各含2个种,其余土样各含1个种。4份土样含异小杆线虫属线虫,41份为斯氏线虫属线虫。形态鉴定确认:0396Y和0358M是斯氏芫菁夜蛾线虫。研究结果显示,土质和植被都对昆虫病原线虫的分布产生显著影响。供检土样线虫检出率为34.6%,其中沙壤土检出率77.8%,沙土54.5%,壤土18.2%,粘土为0;菜地土样检出率48.9%,果园40%,大田30%,未耕地20%。含线虫土样中,沙壤土占46.7%,沙土和壤土各占26.7%;受人类干扰的地块(菜地和果园等)土样占80%,未受干扰的(荒地和林地等)占20%。调查显示斯氏线虫科和异小杆线虫科昆虫病原线虫在辽宁地区分布广泛且多分布于中部和东部地区。更多还原

【Abstract】 Entomopathogenic nematodes were recovered from 45 (34.6%) of the 130 sites in 36 regions in Liaoning province of China. 4 sites were positive for the occurrence of Heterorhabditis and 41 sites for Steinernema , Two nematode species were found at each of 5 sites, and a single nematode specie at each of 40 sites. 0396Y and 0358M were identified as Steinernema feltiae, based on morphometric data. Recovery rate was influenced significantly by both soil type and habitat. The recovery rate in sandy loam, sandy and loam soils was 77.8% , 54.5% and 18.2% respectively, and that in the soils of vegetable gardens, orchards, cereal fields and non-cultivated lands was 48.9% , 40% , 30% and 20% respectively. It was shown that entomopathogenic nematodes occurred widely throughout Liaoning province, especially in middle and eastern area.更多还原