烟草根结线虫病不同防控措施的田间筛选

为筛选防控烟草根结线虫病的措施，通过田间试验研究了5种植物、1种昆虫病原线虫、2种生防真菌对烤烟农艺性状、产量、产值及烟草根结线虫病防治效果的影响。结果表明，烤烟间作菽麻、间作猪屎豆，施用异小杆线虫和施用淡紫拟青霉在烤烟农艺性状、产量、产值及整个生育期对烟草根结线虫防治效果综合表现较好。除药剂对照外，整个生育期内施用淡紫拟青霉防效最好，平均防效61.2%；间作菽麻次之，平均防效60.4%；其次为1.46×10⁸Js/hm²的异小杆线虫，平均防效53.3%；最差为间作猪屎豆，平均防效为46.2%。

Different Measures of Controlling Tobacco Root-knot Nematode Disease in the Field

In order to screen the suitable measures for controlling tobacco root-knot nematode disease, field experiments were carried out to study the effects of control crops, entomopathogenic nematode, fungal biocontrol agents on tobacco growth characteristics, yield and economic values, and control of root-knot nematode disease. The results showed that except the positive control(0.5% abamectin granules), Paecilomyces lilacinus showed the highest effect on growth characteristics, yield and economic values and control of root-knot nematode disease, with a control efficiency of 61.2%, followed by intercropping Crotalaria junce L. with a control efficiency of 60.4%, then the Rhabditis sp. concentration of 1.46×10⁸ Js/hm² with a control efficiency of 53.3%. The intercropping Crotalaria mucronata gained a control efficiency of 46.2%.