Applications of nitrate and ammonium fertilizers alter soil nematode food webs in a continuous cucumber cropping system in Southwestern Sichuan, China
文献类型：期刊论文
| 作者 | Kaiwen Pan; Pimin Gong; Jinchuang Wang; Yanjie Wang; Chenggang Liu; Wei Li; Lin Zhang |
| 刊名 | EURASIAN JOURNAL OF SOIL SCIENCE
 |
| 出版日期 | 2015 |
| 卷号 | 4期号:4页码:287-300 |
| 关键词 | Nitrogen fertilizer soil nematodes trophic groups soil food web cucumber cropping system |
| 产权排序 | 1 |
| 通讯作者 | Kaiwen Pan |
| 合作状况 | 国内 |
| 英文摘要 | Nitrate (NO3--N) and ammonium (NH4+-N) fertilizers are the main forms of chemical inorganic nitrogen fertilizers that are widely used in agro-ecosystem for high yield. However, the responses of soil nematode food web to different forms and rates of inorganic nitrogen fertilizers are not well understood. The objective of this study was to determine the responses of soil nematode food web to the applications of inorganic nitrogen fertilizers in a continuous cucumber (Cucumis sativus L.) cropping system. Nitrate (NaNO3) and ammonium (NH4HCO3) fertilizers were applied to cucumber plants at the nitrogen (N) rate of 0, 67.5, 135.0 and 202.5 kg N hm-2 before planting. It was conducted in a randomized complete block design with 4 replications at Huaizi village, Leshan district, Sichuan province, Southwestern China. The effects were analyzed at the stages of seedling, blooming and fruiting, respectively. The results indicated that the numbers of nematodes were significantly higher in soils with the addition of 67.5 kg N hm-2 than the control at the seedling and blooming stages. Nematode number strongly increased at the seedling stage and decreased at the blooming and fruiting stages in nitrate-treated soils compared to the ammonium-treated. The percentage of herbivores to total nematodes significantly decreased while that of bacterivores increased with a fertilizer rate less than 135 kg N hm-2 at the seedling and fruiting stages. Nitrate significantly reduced the percentage of herbivores, and increased that of bacterivores to total nematodes by comparison with ammonium at the blooming and fruiting stages. The application of nitrate significantly increased nematode diversity and evenness, and decreased dominance at the blooming stage relative to ammonium. Nitrate significantly decreased the values of channel index at the blooming stage and maturity index at the seedling stage in comparison with ammonium, respectively. Enrichment index and structural index strongly increased at the seedling stage, and decreased at the blooming and fruiting stages under the treatment of nitrate relative to ammonium. The results suggested responses of nematode food web dependent on the rates and forms of inorganic nitrogen fertilizers and stages of cucumber growth.. |
| 学科主题 | Ecology |
| 收录类别 | 其他 |
| 语种 | 英语 |
| 源URL | [http://210.75.237.14/handle/351003/27551]  |
| 专题 | 成都生物研究所_生态研究 |
| 推荐引用方式 GB/T 7714 | Kaiwen Pan,Pimin Gong,Jinchuang Wang,et al. Applications of nitrate and ammonium fertilizers alter soil nematode food webs in a continuous cucumber cropping system in Southwestern Sichuan, China[J]. EURASIAN JOURNAL OF SOIL SCIENCE,2015,4(4):287-300. |
| APA | Kaiwen Pan.,Pimin Gong.,Jinchuang Wang.,Yanjie Wang.,Chenggang Liu.,...&Lin Zhang.(2015).Applications of nitrate and ammonium fertilizers alter soil nematode food webs in a continuous cucumber cropping system in Southwestern Sichuan, China.EURASIAN JOURNAL OF SOIL SCIENCE,4(4),287-300. |
| MLA | Kaiwen Pan,et al."Applications of nitrate and ammonium fertilizers alter soil nematode food webs in a continuous cucumber cropping system in Southwestern Sichuan, China".EURASIAN JOURNAL OF SOIL SCIENCE 4.4(2015):287-300. |
入库方式： OAI收割
来源：成都生物研究所
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