| 生物覆盖对贵州山地杨树人工林钾素的影响 |
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| 引用本文： | 谢宝东,徐锡增,方升佐,刘久俊.生物覆盖对贵州山地杨树人工林钾素的影响[J].西南林学院学报,2011,31(2):16-19. |
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| 作者姓名： | 谢宝东 徐锡增 方升佐 刘久俊 |
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| 作者单位： | 1. 南京林业大学资源与环境学院,江苏南京210073;山东省水土保持与环境保育重点实验室,山东临沂270003
2. 南京林业大学资源与环境学院,江苏南京,210073 |
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| 基金项目： | 国家自然科学基金项目，国家林业公益性行业科研专项项目，山东省科技攻关项目 |
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| 摘 要： | 将林地杂草白茅和凤尾蕨混合后按照0、2.5、5.0、7.5 kg/m2的覆盖强度进行山地杨树人工林土壤生物覆盖试验,测定土壤钾素动态,结果表明：土壤速效钾含量、根际速效钾含量和R/S值、杨树体内钾素含量均随覆盖强度增加而增加,又随覆盖后年限的延长而减小;不同覆盖强度对杨树各器官钾素含量的影响较为复杂;与其他处理相比,覆盖强度为7.5 kg/m2较利于土壤和杨树钾素养分的提高。
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| 关 键 词： | 生物覆盖 杨树人工林 钾含量 利用效率 |
Mulching Effect on Soil Potassium Content of Poplar Plantation in Upland Area of Guizhou Province |
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| XIE Bao-dong,XU Xi-zeng,FANG Sheng-zuo,LIU Jiu-jun.Mulching Effect on Soil Potassium Content of Poplar Plantation in Upland Area of Guizhou Province[J].Journal of Southwest Forestry College,2011,31(2):16-19. |
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| Authors: | XIE Bao-dong XU Xi-zeng FANG Sheng-zuo LIU Jiu-jun |
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| Institution: | XIE Bao-dong1,2,XU Xi-zeng1,FANG Sheng-zuo1,LIU Jiu-jun1 (1.College of Forest Resources and Environment,Nanjing Forestry University,Nanjing Jiangsu 210073,China,2.Shandong Provincial Key Laboratory of Water and Soil Conservation and Environmental Protection,Linyi Shandong 270005,China) |
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| Abstract: | The mixed mulching materials consisting of the cut waste of Imperata cylindrical var.major and Pteridium aquilinum var.latiuscukum was applied to poplar plantation in the upland area of Guizhou Province with 0,2.5,5.0 and 7.5 kg/m2 as the coverage intensity,and the dynamic change of soil potassium concentration in the poplar plantation soil was monitored.The results indicated that the available potassium content in the soil,the available potassium content in the rhizosphere soil,the R/S value of rhizosphere... |
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| Keywords: | biological mulching poplar plantation potassium content use efficiency |
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