Evaluation of biological and chemical nitrogen indices for predicting nitrogen-supplying capacity of paddy soils in the Taihu Lake region, China
文献类型：期刊论文
| 作者 | Li, Wenjun1,2; Xia, Yongqiu1; Ti, Chaopu3; Yan, Xiaoyuan1 |
| 刊名 | BIOLOGY AND FERTILITY OF SOILS
 |
| 出版日期 | 2011-08-01 |
| 卷号 | 47期号:6页码:669-678 |
| 关键词 | Nitrogen-supplying capacity Anaerobic incubation Chemical indices Paddy soils Taihu Lake region |
| ISSN号 | 0178-2762 |
| DOI | 10.1007/s00374-011-0577-x |
| 通讯作者 | Yan, Xiaoyuan(yanxy@issas.ac.cn) |
| 英文摘要 | Simple and rapid chemical indices of soil nitrogen (N)-supplying capacity are necessary for fertilizer recommendations. In this study, pot experiment involving rice, anaerobic incubation, and chemical analysis were conducted for paddy soils collected from nine locations in the Taihu Lake region of China. The paddy soils showed large variability in N-supplying capacity as indicated by the total N uptake (TNU) by rice plants in a pot experiment, which ranged from 639.7 to 1,046.2 mg N pot(-1) at maturity stage, representing 5.8% of the total soil N on average. Anaerobic incubation for 3, 14, 28, and 112 days all resulted in a significant (P < 0.01) correlation between cumulative mineral NH (4) (+) -N and TNU, but generally better correlations were obtained with increasing incubation time. Soil organic C, total soil N, microbial C, and ultraviolet absorbance of NaHCO(3) extract at 205 and 260 nm revealed no clear relationship with TNU or cumulative mineral NH (4) (+) -N. Soil C/N ratio, acid KMnO(4)-NH (4) (+) -N, alkaline KMnO(4)-NH (4) (+) -N, phosphate-borate buffer extractable NH (4) (+) -N (PB-NH (4) (+) -N), phosphate-borate buffer hydrolyzable NH (4) (+) -N (PB(HYDR)-NH (4) (+) -N) and hot KCl extractable NH (4) (+) -N (H(KCl)-NH (4) (+) -N) were all significantly (P < 0.05) related to TNU and cumulative mineral NH (4) (+) -N of long-term incubation (> 28 days). However, the best chemical index of soil N-supplying capacity was the soil C/N ratio, which showed the highest correlation with TNU at maturity stage (R = -0.929, P < 0.001) and cumulative mineral NH (4) (+) -N (R = -0.971, P < 0.001). Acid KMnO(4)-NH (4) (+) -N plus native soil NH (4) (+) -N produced similar, but slightly worse predictions of soil N-supplying capacity than the soil C/N ratio. |
| 收录类别 | SCI |
| WOS关键词 | AVAILABLE ORGANIC NITROGEN ; POTENTIALLY MINERALIZABLE NITROGEN ; N-MIN TEST ; RICE SOILS ; PERMANGANATE EXTRACTION ; MANAGEMENT-SYSTEMS ; WINTER-WHEAT ; MATTER ; FERTILIZER ; TEXTURE |
| WOS研究方向 | Agriculture |
| WOS类目 | Soil Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000292971700006 |
| 出版者 | SPRINGER |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2559022 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Yan, Xiaoyuan |
| 作者单位 | 1.Chinese Acad Sci, State Key Lab Soil & Sustainable Agr, Inst Soil Sci, Nanjing 210008, Peoples R China 2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China 3.Nanjing Agr Univ, Coll Resources & Environm Sci, Nanjing 210095, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Wenjun,Xia, Yongqiu,Ti, Chaopu,et al. Evaluation of biological and chemical nitrogen indices for predicting nitrogen-supplying capacity of paddy soils in the Taihu Lake region, China[J]. BIOLOGY AND FERTILITY OF SOILS,2011,47(6):669-678. |
| APA | Li, Wenjun,Xia, Yongqiu,Ti, Chaopu,&Yan, Xiaoyuan.(2011).Evaluation of biological and chemical nitrogen indices for predicting nitrogen-supplying capacity of paddy soils in the Taihu Lake region, China.BIOLOGY AND FERTILITY OF SOILS,47(6),669-678. |
| MLA | Li, Wenjun,et al."Evaluation of biological and chemical nitrogen indices for predicting nitrogen-supplying capacity of paddy soils in the Taihu Lake region, China".BIOLOGY AND FERTILITY OF SOILS 47.6(2011):669-678. |
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来源：南京土壤研究所
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