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

林业科学 ›› 2014, Vol. 50 ›› Issue (1): 15-20.doi: 10.11707/j.1001-7488.20140103

集约经营对雷竹林土壤与植株铝含量的影响

季海宝^1,2, 孙晓², 桂仁意¹, 庄舜尧²

1. 浙江农林大学亚热带森林培育国家重点实验室培育基地临安 311300;
2. 中国科学院南京土壤研究所土壤与农业可持续发展国家重点实验室南京 210008

收稿日期:2012-11-04 修回日期:2013-11-23 出版日期:2014-01-25 发布日期:2014-01-25
基金资助:
中国科学院战略性先导科技专项（XDA05070303）。

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

Ji Haibao^1,2, Sun Xiao², Gui Renyi¹, Zhuang Shunyao²

1. Nurturing Station of State Key Laboratory of Sub-Tropical Silviculture Zhejiang A & F University Lin'an 311300;
2. State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science, Chinese Academy of Science Nanjing 210008

Received:2012-11-04 Revised:2013-11-23 Online:2014-01-25 Published:2014-01-25
Contact: 庄舜尧

摘要/Abstract

摘要：

选择不同种植年限的雷竹林及对照水稻田，分析土壤酸度、土壤提取态铝及植株铝含量。结果表明：在水稻田改种雷竹后，雷竹林地表层土壤酸化严重；集约经营增加了土壤有机质含量，最高为64.2 g ·kg^-¹，较对照提高50%；土壤中提取态铝含量随着种植年限增加而显著增加，8-羟基喹啉提取态铝的含量最高为108.0 mg ·kg^-¹，是对照的10倍，乙酸提取态铝含量最高为235.4 mg ·kg^-¹，是对照的4倍多；竹根中铝的含量随着种植年限增加而显著增加，而竹鞭、竹秆及竹叶则相反。可见，在覆盖栽培的集约经营模式下，雷竹林土壤酸化显著，生物毒性铝和生物可利用铝含量剧增，雷竹根部铝大量积聚，养分转运受阻，从而危害雷竹正常生长。

关键词: 集约经营, 雷竹, 土壤酸化, 生物毒性铝, 生物可利用铝

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

中图分类号:

S713

季海宝, 孙晓, 桂仁意, 庄舜尧. 集约经营对雷竹林土壤与植株铝含量的影响[J]. 林业科学, 2014, 50(1): 15-20.

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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集约经营对雷竹林土壤与植株铝含量的影响

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

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