期刊论文

Spatial and Temporal Variation of Soil Nutrients in Tobacco-rice Multiple-cropping Area of Chaling

中文

土壤通报

0564-3945

2021

52

02

297-305

10.19336/j.cnki.trtb.2020081201

公益性行业（农业）科研专项经费项目（201503123-05）资助；

本校为第一机构

采用传统统计学、地统计学的分析方法,使用2009年、2014年和2018年茶陵县烟稻复种区土壤养分含量数据,对该区土壤养分的时空变异特征及其与地形因子的相关性进行了研究。结果表明:2009年土壤有机质、速效钾含量偏低,pH适中,全氮含量适宜,全磷含量极低;2009年至2014年间土壤pH降低,氮、磷、钾养分含量升高;2014年至2018年间,土壤pH值升高,有机质、全氮含量降低,全磷、速效钾、可溶性氯含量继续升高。地统计学分析表明,随烟稻复种年限的增加,土壤pH、有机质变化受随机因素影响增大,速效钾、水溶性氯离子含量始终表现为强空间相关性。坡度对土壤pH、有机质含量影响显著,坡向对土壤速效养分含量影响...

In order to explore the temporal and spatial variation characteristics of soil nutrients and their correlations with topographical factors in tobacco-rice multiple-cropping area of eastern Hunan,the soil nutrients in Chaling in 2009,2014 and 2018 were analyzed by using the traditional statistical and geostatistical analysis methods.The results showed that the contents of soil organic matter (SOM) and available potassium (AK) were at low levels,pH and the content of total nitrogen (TN) were at suitable level,and the content of total phosphorus (TP) was very low in 2009.From 2009 to 2014,soil pH...