永州植烟土壤微量元素分布特征及聚类分析
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摘要
2015年对永州烟区78个产烟乡镇689个植烟土壤的微量元素有效养分进行了取样调查和统计分析。结果表明:烟区土壤有效铜、铁含量丰富;有效锌、硼含量较丰富,很少缺乏;有效锰缺乏比例占32.2%;有效钼、氯普遍缺乏,缺乏比例分别接近90%。聚类分析法将永州烟区土壤微量元素划分为3大特征区域,各区域养分差异达显著水平。根据养分分布特征,提出了微量元素施肥策略。
In 2015, micro-element contents of 689 soil samples from 78 tobacco-producing towns of Yongzhou were investigated. The results showed that the contents of available copper and iron were high in tobacco-producing soils, available zinc and boron were also relatively rich; 32.2% of the total soil samples were lacking of available manganese, while deficiency of available molybdenum and chlorine accounted for 90% of 689 soil samples. Based on the cluster analysis on distribution characteristics of soil trace nutrients, the tobacco planting areas of Yongzhou were divided into three characteristic regions in aggregate, among which differences were significant.The relevant fertilization strategy to distribution characteristics of soil micro-elements was proposed.
In 2015, micro-element contents of 689 soil samples from 78 tobacco-producing towns of Yongzhou were investigated. The results showed that the contents of available copper and iron were high in tobacco-producing soils, available zinc and boron were also relatively rich; 32.2% of the total soil samples were lacking of available manganese, while deficiency of available molybdenum and chlorine accounted for 90% of 689 soil samples. Based on the cluster analysis on distribution characteristics of soil trace nutrients, the tobacco planting areas of Yongzhou were divided into three characteristic regions in aggregate, among which differences were significant.The relevant fertilization strategy to distribution characteristics of soil micro-elements was proposed.
引文
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