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Influence of different fertilization regimes on plant-parasitic nematodes in the black soil region of Northeast China

文献类型： 外文期刊

作者： Pan, Fengjuan 1 ; Xu, Yanli 1 ; McLaughlin, Neil B. 2 ; Liu, Wei 3 ; Han, Xiaozeng 1 ; Zhan, Lili 1 ; Zhao, Dan 4 ;

作者机构： 1.Chinese Acad Sci, Key Lab Mollisols Agroecol, Natl Observat Stn Hailun Agroecol Syst, Northeast Inst Geog & Agroecol, Harbin 150081, Peoples R China

2.Agr & Agri Food Canada, Eastern Cereal & Oilseed Res Ctr, Res Branch, Ottawa, ON K1A 0C6, Canada

3.Heilongjiang Acad Agr Sci, Jiamusi Inst, Harbin 150069, Peoples R China

4.Heilongjiang Acad Agr Sci, Hort Branch, Harbin 150069, Peoples R China

关键词： Fertilizer application;Heterodera;Vertical distribution;Plant-parasitic netatodes

期刊名称：PHYTOPARASITICA （ 影响因子：1.439； 五年影响因子：1.569 ）

ISSN： 0334-2123

年卷期： 2013 年 41 卷 4 期

页码：

收录情况： SCI

摘要： Plant-parasitic nematodes can cause serious plant diseases and adversely affect crop production. We investigated the temporal and vertical dynamics of plant-parasitic nematodes in northeast China to determine if long-term fertilizer application suppresses the population of plant-parasitic nematodes and influences their vertical distribution in the black soil region. The long-term fertilizer application lasted for 14 years, and included three treatments: pig manure combined with chemical fertilizer (MCF), chemical fertilizer (urea and ammonium phosphate, CF), and no fertilizer (NF). A 3-year corn-wheat-soybean rotation was grown on the field site, soil samples were obtained in the corn phase and nematodes were extracted, identified and counted. Six plant-parasitic nematode genera with relative abundance over 0.1% were found in this study. Heterodera was the dominant genus in all three fertilizer treatments, and its relative abundance was highest in NF (45.4%) and lowest in MCF (32.8%). Fertilizer application had a significant effect on abundance of total soil nematodes but not on either plant-parasitic nematodes or Heterodera. Significant differences in the abundance of total soil nematodes, plant-parasitic nematodes and Heterodera were observed among soil depths and interaction of fertilizer x soil depth. Total soil nematodes were mainly distributed in the 0-20 cm soil layer, and plant-parasitic nematodes and Heterodera were mostly distributed in the 10-30 cm soil layer. Fertilizer application did not show a significant effect on plant-parasitic nematodes or Heterodera at any of the sampling depths from 0 to 80 cm. The results indicated that fertilizer has no effective control on plant-parasitic nematodes when dominant genera and their respective plant hosts exist in relatively high abundance.

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[1]Effects of integrated fertilizer application on nitrogen use efficiency of spring maize and soil nitrogen content on black soil in Harbin. Chen, Xueli,Wang, Yufeng,Zhang, Lei,Chen, Xueli,Han, Xiaozeng,Chen, Xueli,Zhang, Junzheng,Bechmann, Marianne.

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