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采用常规的样地调查法,对安徽6个主产地的毛竹林土壤养分与生产力关系进行调查分析。结果表明,不同产地毛竹林生长及其生产力水平差异明显,林分平均密度为2 298～3 496株.hm-2,平均胸径9.0～10.8 cm,平均立竹度0.21～0.34,林分生物量54.7～94.6 t.hm-2;土壤容重多数在1.20 g.cm-3以上,有机质含量25.6～40.2 g.kg-1,全氮1.62～4.56 g.kg-1,全磷0.61～0.92 g.kg-1,有效氮56.5～78.8 mg·kg-1。相关分析显示毛竹林生物量与土壤有机质、全氮、全磷和全钾呈显著正相关,立竹度与土壤有机质、土壤全磷和全钾呈显著正相关。改善土壤物理性、提高土壤肥力特别是有机质含量是促进毛竹林优质丰产的重要措施。
The conventional sample survey method was used to investigate the relationship between soil nutrient and productivity of Phyllostachys pubescens forest in six main producing areas in Anhui province. The results showed that there were significant differences in growth and productivity of Phyllostachys pubescens from different areas. The average stand density ranged from 2 298 to 3 496 plants .hm-2, with an average diameter at breast height of 9.0-10.8 cm and an average of 0.21-0.3. 54.7 ~ 94.6 t.hm-2. The soil bulk density was above 1.20 g · cm-3, organic matter content was 25.6-40.2 g · kg-1, total nitrogen was 1.62-4.56 g · kg-1, total phosphorus was 0.61-0.92 g. kg-1 and available nitrogen 56.5-78.8 mg · kg-1. Correlation analysis showed that the biomass of Phyllostachys pubescens forest had a significant positive correlation with soil organic matter, total nitrogen, total phosphorus and total potassium, and the stand bamboo had significant positive correlation with soil organic matter, soil total phosphorus and total potassium. Improving soil physical properties and increasing soil fertility, especially organic matter content, are important measures to promote high-yield and high-yield bamboo forests.