期刊论文

Temporal and Spatial Variability of the Soil Main Nutrients in Xiangxi Tobacco-planting Area

中文

云南农业大学学报(自然科学)

1004-390X

2019

34

5

852-859

10.12101/j.issn.1004-390X(n).201712013

XX16-18Aa02:湖南省烟草公司项目 2012-37:湖南省烟草公司湘西自治州公司项目

本校为第一机构

【目的】明确湘西州植烟土壤养分状况,为植烟土壤的科学管理和实现烟叶优质适产提供理论依据。【方法】以湘西州2000年和2015年耕地土壤主要养分含量为研究对象,利用空间自相关、半方差函数及分形维数等方法,对湘西州土壤主要养分时空变异特征进行了研究。【结果】从基本统计特征和分布频率来看,15年来,湘西植烟土壤碱解氮含量均值由119.60 mg/kg上升到147.01 mg/kg,增幅达22.92%;土壤有效磷含量均值由7.26 mg/kg上升到38.15 mg/kg,增幅高达425.62%;土壤速效钾含量均值由164.62 mg/kg上升到219.34 mg/kg,增幅度达33.24%。从时空变异来看,15年来,碱解氮、有效磷和速效钾含量的块金效应数值和分形...

[ Purpose] The purpose of this paper was to provide a theoretical basis for scientific management of tobacco planting soil and improvement of tobacco quality.[Method]Based on the methods of spatial autocorrelation, semi-variance function and fractal dimension, the spatiotemporal variation of soil main nutrient from Xiangxi area were studied. Two sets of data were used for analysis in this study in 2000 and 2015.[Result]From the basic statistical characteristics and distribution frequency point of view, in the past 15 years, the average content ...