不同竹种对土壤理化性质的影响

Influences of physical and chemical properties of soil under different bamboo forests

对相同立地无林地和毛竹、淡竹、曲竿竹林地土壤理化性质进行对比分析,结果表明:种植竹林后,土壤密度、含水量、总孔隙度都较无林地有明显改善,有机质含量显著增加,淡竹对改善土壤密度等效果最显著。毛竹对氮、磷含量的积累优势最为明显,3种竹林保钾能力偏弱。偏酸林地p H均有不同程度的增加,表明栽植竹林有利于改善土壤酸度。

In this paper,the physical and chemical properties of the plot soil under different bamboo forests,namely Phyllostachys edulis,P. glauca and P. flexuosa were test and compared. The results showed that the soil density,moisture content and total porosity of different plots were improved significantly. The organic matter content in soil also increased significantly. The soil of P. glauca forest improved more than that under other forests on soil volume weight and other soil physical factors. However,P. edulis forest performed best in nitrogen and phosphorus accumulation. All of the three bamboo stands performed weak capacity of potassium accumulation. The p H values were also increased in various degrees of the sites. It meant that planting bamboo forest could maintain and restore soil fertility.