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【目的】已有研究表明花椰菜Brassica oleracea var.botrytis田合理间作番茄Lycopersicon esculentum对菜田主要害虫具有抑制作用。本研究旨在进一步探明提高花椰菜田生态系统保益控害服务功能的番茄最佳间作比例。【方法】2014年2-5月,试验在福建省闽清县省级标准农田示范区(26°10’41″N,118°48’10″E)内进行,按番茄株数占花椰菜田总植株数中的比例设置4个梯度小区,分别为0%,10%,30%和50%,小区采用随机区组设计,通过目测法对花椰菜菜田节肢动物的种类和个体数量进行观察并记录。【结果】间作番茄显著降低了花椰菜田中菜蚜Lipaphis erysimi的个体数量,且控制效果随番茄间作比例的上升而增强(50%>30%>10%)。间作30%和50%番茄显著降低了黄曲条跳甲Phyllotreta striolata的个体数量,但2种间作比例的效果差异不显著。间作番茄不影响菜青虫Pieris rapae和蜘蛛的个体数量。3种间作比例都提高了菜蛾绒茧蜂Cotesia plutellae的个体数量和蜂/蛾比,但三者差异不显著。【结论】在花椰菜田中间作30%的番茄,对害虫控制最有利。
【Aim】 It has been reported that Lycopersicon esculentum, a reasonable intercropping tomato in Brassica oleracea var. Botrytis, inhibits the major pests in vegetable fields. The purpose of this study is to further explore the optimal intercropping ratio of tomato to improve the service function of ecosystem benefit control in cauliflower field. 【Method】 From February to May in 2014, the experiment was conducted in the provincial standard farmland demonstration zone of Minqing County, Fujian Province (26 ° 10’41 “N, 118 ° 48’10” E) Four gradient cells were set up in 0, 10, 30, and 50% of the plants respectively. The community was designed by randomized block design. The species and number of arthropods in cauliflower were observed and recorded by visual inspection . 【Result】 The results showed that the intercropping tomato significantly reduced the number of individuals in the field of cabbage aphid Lipaphis erysimi, and the control effect increased with the increase of interplanting percentage (50%> 30%> 10%). Intercropping 30% and 50% tomato significantly reduced the number of individuals of Phyllotreta striolata, but no significant difference was found between the two intercropping rates. Intercropping tomato does not affect the individual number of Pieris rapae and spiders. The three intercropping raises the individual number and bee moth ratio of Cotesia plutellae, but the difference between the three is not significant. 【Conclusion】 It is most beneficial to pest control to make 30% tomato in the middle of cauliflower field.