内蒙古赤峰烟区植烟土壤养分分类及施肥对策

Soil Nutrient Classification and Fertilization Strategy for Tobacco Growth in Chifeng of Inner Mongolia

为了解内蒙古赤峰烟区植烟土壤养分状况,以2008年至2011年5个旗(县、区)76个村采集的土样为数据来源,用主成分和聚类分析方法对其主要养分含量进行了分类。结果表明,赤峰烟区植烟土壤可分为5种养分类型,即养分缺乏型、中氮富磷型、中氮低磷型、高磷养分丰富型和中氮高磷型,各类型所占比例分别为50%、13.1%、26.3%、5.3%和5.3%。松山区和宁城县约三分之二村组的烟田属于低磷养分型,喀喇沁旗约二分之一村组的烟田属于高磷养分型,敖汉旗和翁牛特旗植烟土壤属于养分缺乏型。该分类结果对产区进行测土配方施肥具有指导意义。

Recently, fertilizer application for tobacco planting by soil testing has been popularized in China. In order to attain a better understanding of soil nutrient distribution in Chifeng tobacco planting area, soil samples from 76 townships in 5 counties from 2008 to 2011 were collected and tested. The results showed that soil nutrient status in Chifeng tobacco planting areas could be divided into 5 types： 1） nutrient insufficient type, 2） moderate nitrogen contents with rich phosphorus type, 3） moderate nitrogen contents with low phosphorus contents type, 4） rich nutrients with high phosphorus content type, and 5） moderate nitrogen contents with high phosphorus contents type. Each type covered total tobacco planting area in Chifeng of 50%, 13.1%, 26.3%, 5,3 % and 5.3 % respectively. 2/3 of the villages＇ soil with tobacco growing in Songshan District and Ningchen County belonged to 1） and 3） types, which lacked of phosphorus. 1/2 of the villages＇ soil with tobacco growing in Harqin Banner belonged to 4） and 5） types with high phosphorus contents. Tobacco growing soil in Aohan Banner and Ongniyud Banner belonged to 1） type with shortage of basic nutrients. These findings would be great benefit to the soil nutrient management for tobacco growing in Chifeng.