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为了探讨油菜-小麦邻作模式对麦蚜种群动态的控制作用,2009—2010年将小麦田和油菜田交界处设为0m,在距0m处2、4、6、8、16m(包括0m)处设立试验小区,记录麦蚜数量。邻作小麦田距离油菜田16m处的无翅麦蚜数量最多,且与其它距离差异显著(P<0.05),而单作小麦田中各距离之间差异不显著(P>0.05);距离油菜田8～16m处,小麦邻作田麦蚜数量的降低百分率骤减,分别从2009年的26.91%降低到1.02%和2010年的22.72%降低到0.53%。初步表明该邻作模式可以控制小麦田8m以内的蚜虫数量。
In order to investigate the control effect of rapeseed-wheat orthoplanas on the population dynamics of wheat aphid, the border between wheat field and rapeseed field was set as 0m from 2009 to 2010, and at 2,4,6,8,16m (including 0m) At the experimental area set up to record the number of wheat aphids. The number of wingless wheat aphids located at 16m in the rapeseed field was the highest among adjacent wheat fields, with significant difference (P <0.05), but no significant difference among all the single cropped wheat fields (P> 0.05) At 8 ~ 16m, the percentage decrease of wheat aphids adjacent to cropland decreased sharply from 26.91% in 2009 to 1.02% in 2009 and from 22.72% in 2010 to 0.53% respectively. It is preliminary indicated that this mode of adjacent crop can control the aphid population within 8m in wheat field.