江永县植烟土壤有效锌含量分布及其影响因素  

Distribution of Effective Zinc Content in Tobacco-planting Soil of Jiangyong County and Its Influencing Factors

作　　者：杨苏[1] 戴林建[1] 周田[1] 邓杰[1] 

机构地区：[1]湖南农业大学农学院,湖南长沙410128

出　　处：《江西农业学报》2016年第8期32-35,共4页Acta Agriculturae Jiangxi

基　　金：湖南中烟有限责任公司科研项目"湖南烟区提高烟叶可用性综合技术集成与推广"(YC14014)

摘　　要：采集江永县5个乡镇植烟土壤样品104个,统计分析了江永植烟土壤有效锌含量的分布规律,及其在各种地形间、不同土壤p H间、不同土壤有机质含量间的差异。结果表明：江永植烟土壤有效锌含量均值为1.78 mg/kg,变幅为0.27～9.41 mg/kg,变异系数为74.72%,其中土壤样本有效锌含量低于适宜范围的比例达到17.86%;不同地形土壤有效锌含量表现出平原〉盆地〉丘陵的趋势;土壤有效锌含量随土壤p H值的升高呈先降低后升高的趋势;植烟土壤有机质含量对有效锌含量有正向促进作用。In this paper,104 tobacco-planting soil samples were collected from 5 townships of Jiangyong county,the distribution regularities of effective zinc content in tobacco-planting soil of Jiangyong county were statistically analyzed,and the differences in effective zinc content among soils with various terrains,p H- values or organic matter contents were studied. The results showed that： the effective zinc content in tobacco-planting soil of Jiangyong county ranged from 0. 27 mg / kg to 9. 41 mg / kg,its average value was 1.78 mg / kg,and its variation coefficient was 74.72%; the proportion of soil samples whose effective zinc content was below the appropriate value reached 17. 86%; the content of effective zinc in the soil of different terrains revealed the trend of plain 〉 basin 〉hill; the soil effective zinc content decreased firstly and then increased along with the rising of soil p H-value; the organic matter content in tobacco-planting soil had a positive promotive effect on the soil effective zinc content.

关 键 词：江永县 植烟土壤 有效锌 地形 PH值 有机质 

分 类 号：S153.61[农业科学—土壤学]