论文部分内容阅读
集约经营的雷竹有很高的经济效益,然而长期种植的雷竹林土壤酸化严重,影响了雷竹的可持续经营。研究通过采集浙江临安两样地不同雷竹种植年限的土壤,分析土壤酸化指标,以了解雷竹集约种植下土壤的酸化过程。结果表明,随种植年限的增加,土壤氮磷钾养分积累明显,而pH值下降显著。土壤中交换性酸随时间显著增加,其中交换性铝的比例也在增加,而盐基阳离子及饱和度下降明显。通过简单的方程拟合可以知道不同地点土壤酸化速率有所差异,但最终pH值较为相同,说明强度人为经营措施对土壤性质影响显著。因此,要防治雷竹土壤的酸化需要进行合理有效的管理措施。
Phyllostachys pubescens has high economic benefits, however, long-term cultivation of the Phyllostachys pubescens soil acidification seriously affected the sustainable management of Phyllostachys praecox. By collecting soils with different years of bamboo planting in Lin’an, Zhejiang Province, soil acidification indexes were analyzed to understand the acidification process of soils under intensive planting of Thunbergii. The results showed that with the increase of planting years, the accumulation of N, P and K nutrients in soil was obvious, while the pH value decreased significantly. Exchangeable acid in soil increased significantly with time, of which the exchangeable aluminum ratio also increased, while the salt-based cation and saturation decreased significantly. Through simple equation fitting, it can be known that soil acidification rate is different in different sites, but the final pH values are the same, which shows that man-made intensity management has significant effect on soil properties. Therefore, to control the acidification of thunder bamboo soil needs reasonable and effective management measures.