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Intercropping of wheat and walnut reduce populations of Chromaphis juglandicola

文献类型： 外文期刊

作者： Jia, Shuangshuang 1 ; Shen, Yuyang 2 ; Deng, Feifei 2 ; Li, Jin 2 ; Li, Guangkuo 2 ; Gao, Haifeng 2 ; Liu, Yongqiang 1 ;

作者机构： 1.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 830091, Peoples R China

2.Chinese Acad Agr Sci, Inst Plant Protect, State Key Lab Biol Plant Dis & Insect Pests, Beijing 100193, Peoples R China

关键词： agricultural intensification; intercropping; pest biological control; predators

期刊名称：JOURNAL OF ECONOMIC ENTOMOLOGY （ 影响因子：2.4； 五年影响因子：2.4 ）

ISSN： 0022-0493

年卷期： 2025 年

页码：

收录情况： SCI

摘要： Intensive agriculture is associated with a great decline in biodiversity and biocontrol of pests. Intercropping potentially promotes natural enemy's abundance and species biodiversity and enhance pest biocontrol. We monitored the population dynamic of Chromaphis juglandicola (Kaltenbach) (Hemiptera: Aphididae) and tested the effect of intercropping conventionally managed winter wheat with walnut on the abundance of C. juglandicola and its predators (including ladybeetles, lacewings, hoverflies, and spiders), and the diversity, evenness, and dominant concentration of predators on walnut. The density of C. juglandicola in walnut trees was peaked in mid-July. It, but not its predators, was significantly reduced in walnut-wheat plots, but the species diversity and evenness of predators declined, and the dominant concentration increased. Intercropping benefited C. juglandicola control by reducing their density in walnut. Overall, the increasing of plant diversity in intercropping system of wheat with walnut enhance the aphid C. juglandicola biocontrol, which can reduce the reliance on pesticide in walnut and result in a walnut producing agroecosystem that is more nature-inclusive and healthy for human and the ecosystem.

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