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为探讨麦田遗传多样性对麦长管蚜的生态效应,系统调查了麦长管蚜及其天敌的种群时序变化,并分析了对麦长管蚜空间分布的影响。结果表明,所有间作处理麦田中高峰期麦长管蚜无翅蚜的百株蚜量均显著低于单作麦田,其顺序为:小麦单作北京837(7 422.0头)>与KOK间作(5796.7头)>与红芒红间作(5406.7头)>与郑州831间作(5 291.7头)>与JP2间作(4 493.4头)>与中四无芒间作(4155.0头),且麦蚜由聚集分布趋于均匀分布;蚜茧蜂发生的高峰期,各间作处理麦田中蚜茧蜂的平均数量高于小麦单作田,且差异达极显著水平(P<0.01);各间作处理麦田小麦理论产量增加,与小麦单作处理差异显著(P<0.05)。表明大田小麦品种间作抗蚜品种对麦长管蚜有显著的调控作用。
In order to investigate the ecological effects of genetic diversity on wheat aphid in wheat field, the population dynamics of aphids and their natural enemies were systematically investigated and the effects on the spatial distribution of aphids were analyzed. The results showed that the average number of all the aphid-resistant aphid-free aphids per plant was significantly lower than that of single-cropping wheat fields in the intercropping treatments at the peak of wheat field in the order of 837 (7 422.0) for wheat monocropping and 5796.7 for intercropping with KOK (5406.7 heads) and Zhengzhou (5 291.7 heads), intercropping with JP2 (4 493.4 heads), and the non-invasive intercropping lines (4155.0 heads) with M. sibiricum, and the wheat aphid was characterized by aggregation and distribution (P <0.01); the theoretical yield of wheat in each treatment increased, the average number of aphid parasitoids in the treatment of wheat aphid was higher than that in the single cropping of wheat, There was significant difference with single treatment of wheat (P <0.05). The results showed that the anti-aphid varieties intercropping with field wheat had a significant regulation on Aphis gossypii.