| 太湖地区3种主要类型土壤的供氮能力研究 |
| |
| 引用本文： | 闫德智.太湖地区3种主要类型土壤的供氮能力研究[J].安徽农业科学,2011,39(14):8391-8394. |
| |
| 作者姓名： | 闫德智 |
| |
| 作者单位： | 南通大学地理科学学院;南通大学地理工程技术研究所; |
| |
| 基金项目： | 国家自然科学基金项目(40901140); 南通大学自然科学研究项目(08Z064、08R20) |
| |
| 摘 要： | 目的]研究了太湖地区3种类型土壤黄泥土、乌沙土和乌栅土的供氮能力,以期为太湖地区的氮肥合理施用提供依据。方法]采用好气培养法、淹水密闭培养法、化学提取法。结果]好气条件下,黄泥土的氮矿化量最高,其次为乌栅土,乌沙土最低,乌栅土2060 cm土层土壤供氮量占060 cm土层的40%左右。淹水条件下,土壤的氮矿化量依次为乌栅土〉黄泥土〉乌沙土,乌栅土全层土壤供氮量主要来自020 cm土层。黄泥土和乌沙土的无氮区水稻产量和水稻吸氮量在0.05水平显著高于乌栅土。3种土壤酸解氮、碱解氮和热氯化钾提取氮的大小顺序依次为乌栅土〉黄泥土〉乌沙土,各化学提取法指标都随土层的加深而降低。结论]各项化学提取法指标能够在一定程度上反映土壤氮素矿化的难易程度。
|
| 关 键 词： | 氮素矿化 好气培养 土层深度 水稻土 |
Study on Nitrogen Supply Opacity of Three Soils in Taihu Region |
| |
| YAN De-zhi.Study on Nitrogen Supply Opacity of Three Soils in Taihu Region[J].Journal of Anhui Agricultural Sciences,2011,39(14):8391-8394. |
| |
| Authors: | YAN De-zhi |
| |
| Institution: | YAN De-zhi(School of Geography Science,Nantong University,Nantong,Jiangsu 226001) |
| |
| Abstract: | Objective] Soil nitrogen supply capacity of three main soils in Taihu Region was studied.Method] The aerobic incubation method,submerged incubation method and chemical extraction method were used.Results] In aerobic condition,nitrogen mineralization increased in the order:huangni soil > wushan soil > wusha soil.In wushan soil,mineralized nitrogen from 20-60 cm soil depth accounted for 40% of mineralized nitrogen of 0-60 cm depth.In anaerobic condition,nitrogen mineralization increased in the order:wushan... |
| |
| Keywords: | Nitrogen mineralization Aerobic incubation Soil depth Paddy soil |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
