黄淮海地区不同种植结构下点蜂缘蝽的发生规律

Occurrence patterns of bean bug Riptortus pedestris in different cropping structures in the Huang-Huai-Hai region

为明确大豆-玉米带状间作种植模式对点蜂缘蝽Riptortus pedestris发生规律的影响,2023年在山东省大豆单作田中进行诱捕效果试验,筛选诱捕效果最好的诱捕器对黄淮海地区山东、河南和安徽3个省6个市不同种植模式下点蜂缘蝽的发生动态进行监测。结果显示,风叶型诱捕器对点蜂缘蝽的诱捕效果最佳。在大豆单作田内点蜂缘蝽的发生高峰期为7月中旬—8月中旬,此时大豆正值盛花-始荚期。在大豆-玉米带状间作田内点蜂缘蝽的发生动态与大豆单作田的无明显差异,但点蜂缘蝽发生数量及高峰期发生时间可能与杀虫剂的施用时间和次数密切相关。

To clarify the effect of soybean-maize strip intercropping on the occurrence of bean bug Riptortus pedestris,a comparative trapping efficiency analysis was conducted in Shandong Province in 2023.Windmill traps were used to investigate the occurrence of R.pedestris across various planting systems in six cities spanning Shandong,Henan,and Anhui provinces.The results indicated that windmill traps were most effective in capturing R.pedestris.Peak infestation of R.pedestris in soybean fields occurred from mid-July to mid-August,corresponding to soybean flowering to pod-setting stages.Moreover,there was no significant difference in occurrence patterns between soybean-maize strip intercropping and soybean fields.Timing of insecticide application should be synchronized with the number of pests and peak infestation periods.