黄板诱杀对设施蔬菜烟粉虱控制作用研究

目的]减少农药的使用,提高农产品质量安全.方法]研究不同黄板间距及色板颜色对温室烟粉虱的诱杀作用.结果]3 m间距黄板对烟粉虱的诱杀效果最好,30 d后虫口减退率高达99.52;；其次是6和9m间距,虫口减退率分别达87.27;和44.92;.以植株上烟粉虱虫口减退率对黄板间距进行拟合,得到回归方程Y=-1.7404X2+11.392 X+79.874(R2=1).表明黄板间距大于3 m以后,随着间距的增大,植株上烟粉虱的虫口减退率降低.3～5m间距植株上烟粉虱成虫的虫口减退率下降趋势缓慢,是设施内经济有效的黄板间距.两种黄板颜色的比较表明,金黄色板和橘黄色板对烟粉虱均有明显的诱杀作用.金黄色板对烟粉虱的诱集效果更好,与橘黄色板间差异显著.结论]在设施烟粉虱发生初期虫口密度较低时,即虫口密度在平均每片叶不超过5头的时候,以3～5m间距悬挂2列金黄色板,对温室蔬菜定植后早期发生的烟粉虱可以获得理想的控制效果.

Control Effects of Yellow Sticky Trap(YST) to Bemisia tabaciin the Greenhouses in Turpan Area

【Objective】In order to reduce pesticides amount and enhance the the quality and safety of farm produce.【Method】 The traping and killing effect of different densities of yellow sticky trap as well as color differences are studied in greenhouses to Bemisia tabaci.【Result】 Results showed that the traping and killing effect of 3 m space between yellow sticky traps is the best with 99.5% population decline rate after 30 d,lined with 6 m and 9 m at 87.27% and 44.92% population decline rate,respectively.Combining population decline rate of B.tabaci on plant and the space between yellow traps fitted the regression equation of Y=-1.740 4 X2+11.392 X + 79.874(R2=1).It suggested that the population decline rate of B.tabaci on plant decreased along with the increase of spaces between yellow sticky trap after 3 m.Whereas the population decline rate of B.tabaci on plant decreased very slowly in distance of 3-5 m.This may be the most economic space between yellow sticky trap in greenhouses.In comparison of the two different colors,both yellow sticky trap with golden color and orange color showed distinct traping and killing effect to B.tabaci,but the effect of the golden color is significantly better than that of the orange color.【Conclusion】 Therefore,the ideal control effect could be obtained to hang 2 lines of golden color trap in 3-5 m space between traps at the initial period of B.tabaci occurrence,as the density of B.tabaci is less than 5 head/leaf.