摘要
基于2000和2015年湘西植烟土壤交换性镁数据,分析其基本统计特征和时空分布变化。结果表明,从基本统计特征看,15年间湘西植烟土壤交换性镁均值由1.39 cmol/kg上升到1.77 cmol/kg,同时其变异程度也增大。从时空变异看,15年来,植烟土壤交换性镁"低"和"极地"等级面积增加了4.62百分点和1.18百分点,"高"和"极高"等级面积增加了9.13百分点和9.80百分点,而"适宜"等级的面积下降了24.73百分点。总体上,湘西植烟土壤交换性镁呈增加和两极分化的趋势。
Based on the data of exchange magnesium in tobacco planting soil in Xiangxi in 2000 and 2015,the basic statistical characteristics and spatial and temporal distribution changes were analyzed. The results showed that the mean of exchange magnesium in tobacco planting soil in Xiangxi increased from 1.39 cmol/kg to 1.77 cmol/kg in 15 years,and the degree of variation increased. In terms of spatial and temporal variations,over the past 15 years,the " low" and " polar" grade areas of flue-planting soil have increased by 4.62 percentage point and 1.18 percentage point,and the " high" and " very high" grade areas have increased by 9.13 percentage point and 9.80 percentage point,the area of the " suitable" level decreased by 24.73 percentage point. Overall,the trend of increasing and polarization of exchangeable magnesium in tobacco planting soil in Xiangxi.
引文
[1] 胡国松,郑伟,王震东,等.烤烟营养原理[M].北京:科学出版社,2000.
[2] 刘坤,周冀衡,李强,王茂贤,等.植烟土壤交换性钙镁含量及对烟叶钙镁含量的影响[J].西南农业学报,2017,30(9):2065-2070.
[3] 李强,周冀衡,刘晓颖,等.曲靖烤烟镁含量特征及其影响因素[J].土壤,2017,49(3):565-571.
[4] 高华军,林北森,黄忠言,等.百色烟区植烟土壤和烟叶镁素的营养特征[J].湖北农业科学,2013,52(6):1267-1269.
[5] 谭军,周冀衡,古琦,等.文山植烟土壤交换性钙镁分布特征及影响因素分析[J].烟草科技,2017,50(9):15-22.
[6] 李斌,梁洪波,王浩浩,等.山东烟田土壤交换性钙镁特征研究[J].中国烟草学报,2013,19(2):61-66.
[7] 邱学礼,高福宏,李忠环,等.昆明市植烟土壤交换性钙镁特征分析[J].烟草科技,2013,46(1):81-84.
[8] 鲁如坤.土壤农业化学分析方法[M].北京:中国农业科技出版社,2000.
[9] 郝黎仁,樊元,郝哲欧,等.SPSS实用统计分析[M].北京:中国水利水电出版社,2002:110-135.
[10] 吴秀芹,张洪岩,李瑞改,等.ArcGIS9地理信息系统应用与实践(下册)[M].北京:清华大学出版社,2007:463-517.