期刊论文

Distribution of Available Zinc in Tobacco-planting Soils in Wenshan and Its Influential Factors

中文

土壤

0253-9829

2017

49

4

719-724

10.13758/j.cnki.tr.2017.04.012

云南省烟草公司项目

本校为第一机构

为探明文山烟区植烟土壤有效锌分布情况及其影响因素,并为烤烟合理施用锌肥提供理论依据,运用 GPS定位技术采集了276份土样,测定其有效锌含量,采用经典统计学方法和GIS技术,对其基本特征、空间分布状况及影响因素进行了分析.结果表明:①文山烟区植烟土壤有效锌平均含量为1.93 mg/kg,变幅为0.20 ~ 8.17 mg/kg,变异系数为70.47%,属于中等变异强度.全烟区有70.12%的区域土壤有效锌在适宜范围内(1.00 ~ 5.00 mg/kg).②县域间植烟土壤有效锌平均含量从高到低排序为:麻栗坡>西畴县>文山县>马关县>砚山县>丘北县>广南县.③土壤中有效锌含量随着有机质增加而增大,随海拔升高呈抛物线变化;不同海拔组和有...

In order to understand the distribution of available zinc in tobacco-planting soils in Wenshan and its influential factors and to provide a basis for the reasonable application of zinc fertilizer, 276 soil samples were collected with the help of GPS. Available zinc contents, spatial distribution and influential factors were analyzed by geostatistics method with geographic information system (GIS) and classical statistical method. The results showed that the average available zinc content ranged from 0.20 to 8.17 mg/kg, with a mean of 1.93 mg/kg and a variation coefficient of 70.47%. 70.12% of ...