安徽农业科学2012，Vol.40Issue(34)：16825-16827,3.
烤烟钾含量的时空变异特征研究——以河南烟区为例
Spatiotemporal Variation of Potassium Content of Flue-cured Tobacco Leaf in Henan Province
朱亚刚1
作者信息
- 1. 福建中烟工业有限责任公司,福建厦门 361022
- 折叠
摘要
Abstract
[Objective] To study temporal variability of potassium content in flue-cured tobacco, so as to provide basis for application of geostatistics in tobacco quality chemical constituents temporal distribution. [Method] Temporal and spatial variability characteristics of potassium content of flue-cured tobacco leaf in Henan Province in 1999 and 2007 were evaluated using geostatistics and geographic information system (GIS). [Result] The results indicated that average potassium content in 1999 and 2007 were 1. 30% and 1.48% , respectively. Coefficients of variation of potassium content of two periods were similar and both belonged to moderate variability. The ratio of nugget to sill of potassium content in 1999 and 2007 were 4. 7% and 23. 5% , respectively. Both embodied stronger spatial correlation and were best described by spherical model. Their spatial correlation distances in 1999 and 2007 were 284 m and 234 m, respectively, which showed a descending trend. The spatial distributions of potassium content in both years were similar, increasing from east to west. [ Conclusion] The spatial distributions of potassium content were mainly affected by structural factors and the effects of human activities were increasing.关键词
河南/烤烟钾含量/地统计学/时空变异Key words
Henan/ Potassium content of flue-cured tobacco leaf/ Geostatistics/ Temporal and spatial variability分类
农业科技引用本文复制引用
朱亚刚..烤烟钾含量的时空变异特征研究——以河南烟区为例[J].安徽农业科学,2012,40(34):16825-16827,3.
