Response of the wheat rhizosphere soil nematode community in wheat/walnut intercropping system in Xinjiang, Northwest China
文献类型： 外文期刊
作者： Bai, Peng-hua 2 ; Liu, Qi-Zhi 1 ; Li, Xing-yue 3 ; Liu, Yan-bin 1 ; Zhang, Lin-lin 4 ;
作者机构： 1.China Agr Univ, Dept Entomol, Coll Agr & Biotechnol, Yuanmingyuan West Rd 2, Beijing 100193, Peoples R China
2.Tianjin Inst Plant Protect, Tianjin 300381, Peoples R China
3.Sichuan Acad Agr Sci, Inst Plant Protect, Chengdu 610066, Sichuan, Peoples R China
4.Hebei Acad Agr & Forestry, Changli 066600, Peoples R China
关键词： Biodiversity; Food web; Planting pattern; Soil nematode community; Soil properties
期刊名称：APPLIED ENTOMOLOGY AND ZOOLOGY （ 影响因子：1.403； 五年影响因子：1.381 ）
ISSN： 0003-6862
年卷期： 2018 年 53 卷 3 期
页码：
收录情况： SCI
摘要： Intercropping Persian walnut (Juglans regia L.) and wheat (Triticum aestivum L.) have been widely applied in the Xinjiang Uygur Autonomous Region in Northwest China as a means of reducing soil and water losses and improving both land-use efficiency and economic returns. To understand how changes in soil conditions and nematode community structure can contribute to the evaluation of wheat-walnut intercropping systems from the view of soil fauna, we studied the soil nematode community in wheat rhizosphere soil under both monoculture and intercropping systems for 2 years. The results showed that the pH and total nitrogen and organic matter contents in intercropping systems with walnut trees were decreased compared with those of system with wheat alone. The nematode communities differed significantly between intercropping and monoculture plots, e.g., Rhabditis and Dorylaimus were dominant only in monocultures, whereas Tylenchus was dominant only in intercropping systems. Moreover, intercropping systems resulted in decreased nematode abundance, increased proportions of plant-feeding nematodes, and decreased omnivores/predators, particularly in the second year (2012). The decrease in diversity indices (H') and ecological indices (WI, EI, and SI) of the nematode communities indicated high disturbance and low soil fertility in intercropping systems. Overall, wheat intercropping with walnut had a significant negative effect on wheat rhizosphere soil conditions.
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