|Table of Contents|

Effect of Spring Soybean Long-term Monoculture on Soil Nematode Community Structure and Food web(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2017年04期
Page:
606-613
Research Field:
Publishing date:

Info

Title:
Effect of Spring Soybean Long-term Monoculture on Soil Nematode Community Structure and Food web
Author(s):
PAN Feng-juan HAN Xiao-zeng ZOU Wen-xiu
(Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 150081, China)
Keywords:
Soil nematode Soybean Long-term monoculture Community structure Soil food web
PACS:
-
DOI:
10.11861/j.issn.1000-9841.2017.04.0606
Abstract:
Soil nematode community structure, ecological index and food web index were investigated under different soybean planting system, aiming to determine the effects of soybean long-term monoculture on soil biological diversity and food web. The results showed that nematode genera were most diverse in wheat/maize/soybean rotation system(SR), flowed by soybean monoculture for 3 years(SS), and were lowest in soybean monoculture for 25 years(SL).Jaccard index was highest between SR and SS, with value of 0.81, and it was lowest between SR and SL, with value of 0.66. The abundant of plant parasites was higher in SS than in SR and SL.Fungivores were most abundant in SL, and were higher than SR and SS. Maturity index of plant parasites was higher in SL than in SS and SR. The value of channel index was lower than 50 in all treatments, indicating bacterial decomposition pathway was dominant in soil food web.Treatment SS was located at the A quadrant of plot of enrichment index vs structure index, and SR and SL were located at B quadrant of the plot. These results indicated that soybean long-term monoculture vary soil nematode community structure and degrade nematode genus diversity, and soybean long-term monoculture drive food web structure towards relative maturity and stability.

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Last Update: 2017-08-14