摘要
采用SPSS软件,对重庆主要植烟区土壤的各项基础环境信息数据进行处理,计算出各项基础环境的相应统计学参数,并分析其在不同尺度上的空间变异性。结果表明:重庆市多数植烟土壤的酸碱度适宜烟草种植,碱解N含量偏低且空间变异较大,速效P整体缺乏但局部空间变异大,速效K含量高且空间变异小;有效B整体缺乏且空间变异小,有效Mo含量丰富且空间变异小,有效Fe整体含量中等但局部变异大,有效Mn整体不缺但局部空间变异大,有效Zn整体含量低且空间变异小;交换性Ca2+含量丰富且空间变异小,交换性Mg2+整体缺乏且空间变异小,交换性S2+含量丰富且空间变异小,CEC整体含量适中且空间变异小。
Tobacco-growing soil basic environment information directly effects on tobacco＇s growth, yield and quality. The author tries to analyze the data collected on the main tobacco-growing area in CHONGQING with the software SPSS and work out their corresponding statistics indices. The analysis includes arithmetic means （which shows the central tendency of observations cluster）, kurtosis （which shows the extent of observations cluster around a central point）, standard deviation （which shows the dispersion around means）, skewness （which shows the symmetry of distribution） and dispersion index （ = standard deviation / means）, etc. Based on the experimental data, the spatial variability of the basic environment information in different scales could be found out. The completed research work has shown -that the spatial variability of avail. N, avail. P, effective Fe, effective Mn in the study areas shows a high variability, at the same time, which of avail K, avail B, avail Mo, avail Zn, exchanged Ca, exchanged Mg, exchanged S and CEC is low.
出处
《西南农业学报》
CSCD
2006年第3期409-413,共5页
Southwest China Journal of Agricultural Sciences
基金
重庆市科委(03-7-948)
重庆市烟叶公司(03582)资助项目
关键词
土壤基础环境信息
烟草
空间变异性
重庆
basic environment information of soil
tobacco
spatial variability
Chongqing
