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Zhang, G., Ji, X.J., Li, D.C., Wang, D.Z., Shen, S.D. and Xiang, Z.H. (2012) On Quantitative Evaluation and Spatial Distribution of Major Properties for Tobacco Soil in Xuancheng City of Anhui Province. Soils, 44, 873-879.
http://www.cnki.com.cn/Article/CJFDTotal-TURA201205026.htm

has been cited by the following article:

  • TITLE: Contents and Changes of Potassium in Plough Layers of Xuancheng, South Anhui Province

    AUTHORS: Ka Lin, Decheng Li, Xiaodong Song, Chaolong Zu, Chaoqiang Jiang, Jia Shen, Chengxin Ma, Qin Gao, Qifa Zhu, Xuejun Ji, Guo Zhang, Lin Xue

    KEYWORDS: Rapidly Available Potassium (RA-K), Slowly Available Potassium (SA-K), Topsoil, Tobacco-Rice Rotation, Xuancheng City

    JOURNAL NAME: Agricultural Sciences, Vol.8 No.5, May 22, 2017

    ABSTRACT: Xuancheng City is the dominant tobacco-planting area of Anhui province due to the high quality of the tobacco leaves. However, the potassium content in the tobacco leaves shows a gradual decreasing trend in recent years, which may be attributed partly to the possible low potassium content in topsoil of tobacco-planting farmland. Therefore, the content data in the year of 2005-2007 of rapidly available potassium (RA-K) of 7730 topsoil samples mainly under double rice rotation or wheat/rice-rice rotation at that time and the content data of slowly available potassium (SA-K) and RA-K of 124 typical topsoil samples in the year of 2015 under tobacco-rice rotation were used and compared in order to disclose the status of topsoil potassium and to provide a guidance for reasonable potassium fertilization in Xuancheng. The results showed that in 2005-2007 RA-K content ranged from 1 mg·kg-1 to 844 mg·kg-1 with an average of 68 mg·kg-1, and 82.7% of topsoil samples were insufficient in RA-K (-1). Comparatively in 2015 SA-K content ranged from 230 mg·kg-1 to 1340 mg·kg-1 with an average of 595 mg·kg-1, and 13.7% of soil samples were insufficient in SA-K (-1); RA-K content ranged from 46 mg·kg-1 to 352 mg·kg-1 with an average of 134 mg·kg-1, and 25.8% of soil samples were insufficient in RA-K (-1). The above data show that RA-K content has increased gradually in farmland topsoil mainly due to fertilization since 1980s, particularly to farmland under tobacco-rice rotation, but insufficient RA-K in topsoil is still widely and serious for farmland under double rice rotation or wheat/rice-rice rotation. Under tobacco-rice rotation, RA-K insufficiency usually occurred in the farmlands which plant tobacco less than 3 years, indicating more potassium fertilizer should be applied.