【摘要】 【目的】松沫蝉是一种危害松科树木的刺吸性害虫，为明确其在樟子松林发生规律，并针对性提出超低量载药喷雾防治樟子松林松沫蝉技术。【方法】通过野外调查松沫蝉在樟子松林危害程度与立地条件、生态位空间分布的关系，并评估了无人机超低量喷雾技术的防治效果。【结果】在立地条件方面，纯林虫口密度(49.8±7.05头/株)显著高于混交林(29.85±3.69头/株)(p<0.01)，郁闭度0.5～0.7区间内虫口密度与郁闭度呈显著负相关(r=-0.86)；空间分布上，阳坡虫口密度(49.72±4.18头/株)是阴坡(15.24±1.50头/株)的3.26倍，树冠上层占比达54.51%。无人机飞防试验显示，20%呋虫胺悬浮剂(300 m L/hm~2)持效性最佳，施药15天后防效达94.66%，显著优于其他药剂(p<0.01)。【结论】樟子松纯林、阳坡上坡位及冠层东南向构成松沫蝉暴发的关键风险位点，建议在这些区域优先建立混交林隔离带，并将郁闭度控制在0.6～0.7区间以降低虫口密度。无人机飞防应实施“速效+持效”的药剂组合策略，推荐采用5%高效氯氰菊酯（500 m L/hm~2）与20%呋虫胺（300 m L/hm~2）的桶混方案。更多还原

【Abstract】 [Objective]The pine spittlebug (Aphrophora flavipes) is a sap-sucking pest that damages coniferous trees.This study aims to clarify its occurrence patterns in Mongolian pine (Pinus sylvestris var.mongolica)forests and propose targeted ultra-low volume (ULV) spray control technologies.[Methods]Field investigations were conducted to analyze the relationship between infestation severity of A.flavipes and site conditions as well as spatial niche distribution.The efficacy of drone-based ULV spray technology was evaluated.[Results]Monoculture pine forests exhibited markedly higher pest densities (49.8±7.05 individuals per plant) compared to mixed forests (29.85±3.69 individuals per plant)(P<0.01),with canopy density (0.5-0.7 range) showing a strong negative correlation with infestation levels (r=-0.860).Spatially,pest density on sunny slopes (49.72±4.18 individuals per plant) was 3.26 times greater than on shaded slopes (15.24±1.50 individuals per plant),and over 54.51% of pests aggregated in the upper canopy.Dronebased ultra-low volume spraying trials demonstrated that 20% dinotefuran suspension (300 m L/hm~2) provided the most sustained efficacy,achieving 94.66%control effectiveness 15 days post-application,significantly outperforming other pesticides (P<0.01).[Conclusions]High-risk zones for A.flavipes outbreaks include P.sylvestris monocultures,sunny upper slopes,and southeastern canopy orientations.Mitigation strategies involve establishing mixed forest buffer zones in these areas and maintaining canopy density at 0.6-0.7.For drone-based control,a"rapid-acting+persistent"dual-agent approach is recommended,specifically combining 5% beta-cypermethrin (500 m L/hm~2) with 20% dinotefuran (300 m L/hm~2).更多还原