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| 施用生物炭对云南烟区典型土壤养分淋失的影响 |
| Effects of Biochar Addition on Nutrient Leaching Loss of Typical Tobacco-planting Soils in Yunnan Province, China |
| 投稿时间：2014-08-25 |
| DOI：10.13254/j.jare.2014.0213 |
| 中文关键词: 生物炭 养分淋失 紫色土 赤红壤 黄棕壤 |
| 英文关键词: biochar nutrient leaching calcareous purple soil lateritic red soil yellow brown soil |
| 基金项目:中国烟草总公司云南省烟草公司科技计划项目(2013YN19) |
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| 中文摘要: |
| 土壤养分尤其是氮、钾的淋失是制约云南烟叶生产可持续发展的重要因素之一。近些年来的一些研究表明,生物炭在减少土壤养分淋失方面有着很好的应用效果。然而,关于生物炭在云南植烟土壤上的应用效果研究报道较少。本文基于土柱淋洗模拟试验,研究了添加生物炭对南方紫色土、赤红壤和黄棕壤硝态氮、磷、钾养分淋失的影响,以期为生物炭的合理广泛应用提供理论依据。研究结果显示,添加生物炭后,紫色土、赤红壤和黄棕壤的硝态氮淋洗总量分别减少16%、14%和22%;紫色土、赤红壤的磷素淋洗总量分别减少41%和32%,黄棕壤磷素淋洗总量变化不明显;紫色土和黄棕壤的钾素淋洗总量分别增加19%和23%,赤红壤的钾素淋洗总量变化不明显。研究表明,施用生物炭是控制云南植烟土壤氮磷淋失的有效措施。 |
| 英文摘要: |
| The leaching loss of soil nutrients especially of nitrogen and potassium is generally serious in Yunnan tobacco planting region, which greatly limits sustainable development in tobacco production. In recent years some studies indicate that biochar application is effecitve in reducing soil nutrient leaching losses. However, few reports are available on biochar application effects on tobacco planting soils in Yun-nan Province. In order to provide scientific basis for extensive and proper application of biochar, calcareous purple soil, lateritic red soil and yellow brown soil were selected to investigate the effects of biochar addition on nitrate(NO3--N), phosphorus(P)and potassium(K)leach-ing by using a soil column incubation experiment. Results showed that compared with no biochar control, biochar addition significantly de-creased total NO3--N leaching by 16%, 14%and 22%for calcareous purple soil, lateritic red soil and yellow brown soil respectively. Biochar addition reduced total P leaching by 41% and 32%for calcareous purple soil and lateritic red soil respectively, but not for yellow brown soil comparing with no biochar control. Total K leaching was increased by 19%and 23%for calcareous purple soil and yellow brown soil respec-tively, but not for lateritic red soil under the biochar addition. Our data indicated that in general biochar application is an effective option for reducing NO3--N and P leaching losses of tobacco planting soil in Yunnan Province. |
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