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Effects of strip intercropping of canola with faba bean, field pea, garlic, or wheat on control of cabbage aphid and crop yield

机译:油菜用薯条,豌豆,大蒜或小麦对白菜蚜虫和作物产量控制的影响

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摘要

The impacts of intercropping of canola (Ca) with faba beans (Fb), field peas (Fp), garlic (G), or wheat (Wh) were evaluated on the cabbage aphid, Brevicoryne brassicae (Linnaeus, 1758), natural enemies and canola yields in row ratios of 3Ca : 3Fb, 3Ca : Fp, 3Ca : 3G, and 3Ca : 3Wh in 2018 and 2019. In both years, the lowest aphid population was recorded in 3Ca : 3G. In 2018, the aphid population was significantly (P < 0.05) lower in 3Ca : 3Fp than in the monoculture, while, in 2019, it was lower in the intercrops compared to the monoculture. Furthermore, none of the intercrops, except 3Ca : 3Fb, showed a significant increase in the predator diversity and parasitism rate. The dry seed weight loss was higher in the monoculture and 3Ca : 3Wh than in the other intercrops. Based upon the obtained results, decreasing the density of the cabbage aphid and increasing the canola yield by intercropping canola with the faba bean, the field pea or garlic is possible with this system. The inferences of these outcomes, which are associated with the integrated pest management (IPM) in canola cropping systems, are discussed.
机译:2018年和2019年,以3Ca:3Fb、3Ca:Fp、3Ca:3G和3Ca:3Wh的行比评估了油菜(Ca)与蚕豆(Fb)、豌豆(Fp)、大蒜(G)或小麦(Wh)间作对甘蓝蚜虫、小白菜(Brevicoryne brassicae,Linnaeus,1758)、天敌和油菜产量的影响。在这两个年份中,记录的蚜虫数量最低的是3Ca:3G。2018年,3Ca:3Fp的蚜虫数量显著(P<0.05)低于单作,而2019年,间作的蚜虫数量低于单作。此外,除3Ca:3Fb外,所有间作均未表现出捕食者多样性和寄生率的显著增加。与其他间作相比,单作和3Ca:3Wh的种子干重损失更高。根据研究结果,通过油菜与蚕豆、豌豆或大蒜间作,降低甘蓝蚜虫密度,提高油菜产量是可能的。对这些结果的推论进行了讨论,这些结果与油菜种植系统中的害虫综合治理(IPM)有关。

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