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为探明茶黄蓟马Scirtothirips dorsalis Hood的嗜好颜色并将其用于田间监测,本试验采用RGB颜色模式,将RGB值转换成虚拟波长进行嗜好颜色量化研究,对室内和田间八种颜色进行了筛选,对嗜好颜色粘板在田间应用效果及背景色、形状和网对其影响进行了测定。结果表明:室内茶黄蓟马嗜好颜色为虚拟波长为560 nm[RGB(195,255,0)]黄绿色,显著高于对其他颜色的偏好。田间嗜好颜色也在560 nm附近,同时540 nm绿色和580 nm黄色也有较好诱捕效果。嗜好颜色粘板在田间具有良好的诱集效果,当田间拍打得到种群平均密度为6-11头/花序的较低时,粘板监测到的虫口最高达479头/板/d,并且随着平均密度增大而增加。黑色、白色和蓝色为背景色的粘板诱捕蓟马数量与对照诱捕量无显著差异。圆形色板对茶黄蓟马诱捕效果显著高于其他形状色板,立体诱板和等边三角形、正方形诱板之间对茶黄蓟马的诱捕效果均无显著差异。罩网能有效地保护非靶标生物但茶黄蓟马诱捕量下降。罩于2 mm孔径网和6 mm孔径网的色板诱捕非靶标生物量分别约为无罩网诱捕量的1.5%和15%,但诱捕茶黄蓟马数量分别约为无罩网诱捕量的10%和20%。以上结果为基于颜色的茶黄蓟马的监测和综合治理提供理论依据和技术支持。
In order to find out the hobby color of Scirtothirips dorsalis Hood and to use it for field monitoring, this experiment uses RGB color mode to convert RGB values into virtual wavelengths for colorimetric analysis of hobby colors. Eight colors of indoor and field Screening, the hobby color sticky board in the field of application effects and background color, shape and mesh on the impact of its determination. The results showed that the indigo color of indoor yellow thrips was 560 nm [RGB (195,255,0) yellow-green, which was significantly higher than that of other colors. Field hobby colors are also around 560 nm, while 540 nm green and 580 nm yellow also have a better trapping effect. The hobby color sticks had a good trapping effect in the field, and when the average population density was 6-11 heads / inflorescences in the field, the larvae detected by the sticky board reached a maximum of 479 heads / board / d, and with The average density increases and increases. There was no significant difference in the number of trap thrips with black, white, and blue as background trapping. The circular swatches had a significantly higher trapping effect on the yellow thrips than the other swatches, and the trapping effects were not significantly different between the trilobata and equilateral triangles. Mesh can effectively protect non-target organisms, but the amount of trapped Ochotona curvatus decreased. The non-target biomass swatches covered by 2 mm aperture and 6 mm apertures were about 1.5% and 15% of those without cover, respectively. However, the number of trapped yellow thrips was approximately 10% and 20%. The above results provide theoretical basis and technical support for the color-based monitoring and comprehensive management of the Thrips tabaci.