不同防治方法对麦蚜主要天敌种群动态和小麦生长的影响

Effects of Different Control Methods on Population Dynamics of Main Natural Enemies of Wheat Aphid and Wheat Growth

为了探究不同物理防治方法对麦田内麦蚜天敌及小麦生长的影响,2011~2012年设空白对照(CK)、黄板、糖醋液、诱芯、灯诱和综防6个麦蚜防治方法处理,观察了麦蚜天敌种群动态以及小麦农艺性状和产量的变化。结果表明:与CK相比,5种物理防治方法均造成小麦田内瓢虫和蚜茧蜂的种群数量降低,但不同年份间数据差异具有不稳定性,其中,2011年各物理防治方法处理的指标值与CK差异均达到了显著水平,而2012年这种差异均不显著;除黄板处理外,灯诱、诱芯、糖醋液以及综防处理对小麦株高和穗长均无显著影响。不同物理防治方法处理均能显著提高小麦产量,其中,综防处理效果最佳。

In order to explore the effects of different physical control methods on the natural enemies of wheat aphid in wheat field and wheat growth,the yellow sticky trap,sugar and vinegar liquid,lure core,light lure and comprehensive control were set in 2011-2012,the population dynamics of natural enemies of wheat aphid and agronomic and yield traits of wheat were observed. The results show that compared with blank control,the five kinds of control methods reduced the populations of ladybug and Ephedus plagiator in wheat field,while the data difference was not stable in different years. The differences of the index values between each physical control method and the blank control were significant in 2011,while those were not significant. Except the yellow sticky trap, other physical control methods had little influences on the plant height and panicle length of wheat. All physical control methods could increase the wheat yield,and the effects of comprehensive control was the best.