不同颜色色板对梨园昆虫的诱集效应

为筛选对梨园害虫诱集效果较好的粘虫板,选用黄色、红色、绿色、紫色、蓝色、灰色、白色和黑色8种颜色的粘虫板对梨园内昆虫进行诱集。结果显示,黄色粘虫板的诱集效果最好,诱集害虫种类8科10种,对中国梨木虱和小绿叶蝉的诱集效果较好;其次为绿色粘虫板,诱集昆虫种类7科7种,对中国梨木虱和小绿叶蝉也表现出较好的诱集效果。半翅目昆虫的趋色性较强,诱集数量最多,适合选择色板诱集防治。黄板和绿板对梨园天敌有一定影响,在梨园使用时应适时适量选择性使用。本研究为利用粘虫板在梨园进行害虫防治提供了理论依据。

Trapping effect of sticky traps in different colors on insects in pear orchards

In order to screen the effective sticky trap for pests control in pear orchards, sticky traps in eight selected colors, including yellow, red, green, purple, blue, grey, white and black, were respectively used in pear orchards to trap insects.The results demonstrated that the yellow sticky trap showed the best trapping effect, which trapped 10 insect pests species belonging to 8 families, especially on Psylla chinensis Yang et Li and Jacobiasca formosana.The green sticky trap trapped 7 insect species belonging to 7 families, and also had good trapping effect on P. chinensis and J. formosana. Overall, Hemipteran insects showed strong chromatotropism, so they are suitable to be managed by sticky trap. However, yellow and green sticky traps both have a certain side effect on the natural enemies, therefore, they should be used at right time or in appropriate quantities for pest control in pear orchards.The results provides a theoretical basis for pests control in orchards using the sticky trap.