Effects of biochar application on soil potassium dynamics and crop uptake
文献类型：期刊论文
| 作者 | Chen, Fang1,3; Liu, Yi3; Nie, Xinxing3; Xue, Cheng2; Wang, Li3 |
| 刊名 | JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE
 |
| 出版日期 | 2018-10-01 |
| 卷号 | 181期号:5页码:635-643 |
| 关键词 | exchangeable K K-bearing minerals K-dissolving bacteria non-exchangeable K water-soluble K |
| ISSN号 | 1436-8730 |
| DOI | 10.1002/jpln.201700528 |
| 英文摘要 | Biochar has been suggested as a possible means for enhancing soil fertility, including soil potassium (K). However, understanding of the effects of biochar on soil K dynamics remains limited. In this study, a pot trial was conducted to investigate the influence of biochar application (0, 5, 10, and 25 g kg(-1) soil) on soil K dynamics and crop K uptake under a winter wheat-maize rotation in two types of soil (an Alfisol, which contained a high initial available K and an Entisol, which contained a high abundance of 2 : 1 K-bearing minerals). Changes in soil K in various forms following biochar application and cropping were determined, and their contributions to plant K uptake were evaluated. Soil microbial activity, especially the development of K-dissolving bacteria (KDB), was evaluated to obtain insights into its effects on the weathering of K-bearing minerals in the soils. During the wheat growth period, crop K uptake was more enhanced (13.6-40.5% higher) in the Alfisol than in the Entisol due to the higher availability of water-soluble and exchangeable K, while K fixation occurred in the Entisol because of the higher content of 2 : 1 K-bearing minerals. During the maize period, crop K uptake was generally higher in the Entisol soil due to the release of non-exchangeable K. In addition, biochar application enhanced the growth of KDB in both soils, which was associated with changes in soil pH and water-soluble K. However, improved mineral K release was observed only in the Entisol. It is concluded that biochar application could be a feasible soil amendment to improve soil K availability, but crop K uptake responses may vary depending on soil types. Soils abundant in 2 : 1 K-bearing minerals tend to prolong biochar effects on crop K uptake. Biochar application enhanced the growth of KDB, which may facilitate mineral K weathering in soils with abundant K-bearing minerals. |
| 资助项目 | National Natural Science Foundation of China[41471242] ; International Plant Nutrition Institute[IPNI-HB-45] |
| WOS研究方向 | Agriculture ; Plant Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000446326800001 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/6012]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Chen, Fang |
| 作者单位 | 1.IPNI, China Program, Wuhan 430074, Hubei, Peoples R China 2.Hebei Agr Univ, Coll Resources & Environm Sci, Baoding 071001, Hebei, Peoples R China 3.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Aquat Bot & Watershed Ecol, Wuhan 430074, Hubei, Peoples R China |
| 推荐引用方式 GB/T 7714 | Chen, Fang,Liu, Yi,Nie, Xinxing,et al. Effects of biochar application on soil potassium dynamics and crop uptake[J]. JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE,2018,181(5):635-643. |
| APA | Chen, Fang,Liu, Yi,Nie, Xinxing,Xue, Cheng,&Wang, Li.(2018).Effects of biochar application on soil potassium dynamics and crop uptake.JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE,181(5),635-643. |
| MLA | Chen, Fang,et al."Effects of biochar application on soil potassium dynamics and crop uptake".JOURNAL OF PLANT NUTRITION AND SOIL SCIENCE 181.5(2018):635-643. |
入库方式： OAI收割
来源：武汉植物园
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