龙游和衢江二地毛竹林土壤养分状况与分区推荐施肥研究

Study on Soil Nutrient and Zoning Fertilization at Phyllostachys heterocycla cv. pubescens Stands in Longyou and Qujiang

以衢州市龙游县与衢江区7个乡镇10个样点为研究点,根据不同地块间经营管理导致毛竹林地养分状况的变异,采用二级分区方法,对该区域内毛竹林土壤养分状况进行分析研究,结果表明:①龙游和衢江地区间土壤养分除速钾含量差异不显著外,其他养分差异性均极显著,即区域异质性明显;②龙游县主要土壤养分氮、磷、钾、有机质可分别分成2、2、1、2、2个养分分区,衢江区分成1、2、2、1、1个养分分区;③通过分层聚类分析,龙游县6个测试点可分为3组进行推荐施肥,衢江区4块样地可分为2组进行推荐施肥。

Determinations and analysis with second-level zoning were conducted on soil nutrients at 10 sample plots ofPhyllostachys heterocycal cv. pubescens stands in Longyou and Qujiang, Zhejiang province. The results demonstrated that tested soil nutrients had significant difference among plots except available K, indicating great regional heterogeneity. According to determination results of soil nutrients, bamboo stands were classified by second-level zoning. Hierarchical cluster analysis for fertilization showed that 6 sample plots in Longyou could be divided into 3 groups, and 4 ones in Qujiang with 2 groups.