集约经营对雷竹林土壤与植株铝含量的影响

doi:10.11707/j.1001-7488.20140103

Abstract

Abstract:

Phyllostachys praecox plantations with various ages and the neighboring paddy field (served as control) were selected for analysis of soil acidity, the soil extractable Al content and the bamboo Al content. Results showed that the soil was severely acidified in P. praecox stands after shifted from the paddy field. The intensive management increased soil organic matter content up to 64.2 g·kg^-¹ that was 50% higher than in the control. Soil extractable Al content increased significantly with the cultivation duration of bamboo. The highest content of 8-hydroxyquinoline extractable Al was 108.0 mg· kg^-1 that was 10 times as the control and acetic acid extractable Al content was 235.4 mg·kg^-¹ that was 4 times as the control. The Al content in the bamboo roots increased with the cultivation duration. However, Al contents in the bamboo rhizomes, stems and leaves were the opposite, suggesting there was a damage of nutrient transport in bamboo due to the Al toxicity. Accordingly, the increased soil phytotoxic and bioavailable Al content along with the severe soil acidification did harm to the bamboo growth under the intensive management.

Key words: intensive management, Phyllostachys praecox, soil acidification, phytotoxic Al, bioavailable Al

CLC Number:

S713

Ji Haibao, Sun Xiao, Gui Renyi, Zhuang Shunyao. Influence of Intensive Management on Soil Extractable Al and Phyllostachys praecox Al Content[J]. Scientia Silvae Sinicae, 2014, 50(1): 15-20.

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Influence of Intensive Management on Soil Extractable Al and Phyllostachys praecox Al Content

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