| 不同N源对马尾松幼苗根/土界面pH及P素有效性的影响 |
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| 引用本文： | 陈永亮,李传荣. 不同N源对马尾松幼苗根/土界面pH及P素有效性的影响[J]. 福建林学院学报, 2009, 29(4) |
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| 作者姓名： | 陈永亮 李传荣 |
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| 作者单位： | 1. 临沂师范学院生命科学学院,山东,临沂,276005
2. 山东农业大学林学院,山东,泰安,271018 |
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| 基金项目： | 山东省生态省创新工程资助项目 |
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| 摘 要： | 用根垫—冰冻切片法研究了不同N源处理对马尾松幼苗根/土界面pH及P有效性的影响。结果表明:较对照处理,施加硝态N(NO3--N)与铵态N(NH4+-N)时,根/土界面pH分别增加和降低;不同N源配施易溶性P(PS)时,近根面处pH变化很小,有效P含量均明显增加;配施难溶性矿物P(PR)时,硝态N引起的根/土界面pH增加的幅度增大,近根面处有效P含量未表现出增加,而铵态N引起的根/土界面pH降低的幅度减小,近根面处有效P含量明显增加,表明铵态N处理引起的根系质子(H+)分泌是根/土界面处难溶性矿物P活化的主要因素。
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| 关 键 词： | N源 根/土界面 pH P有效性 马尾松 |
Effect of different nitrogen sources on pH and phosphorus availability in the root-soil interface zone of Pinus massoniana |
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| CHEN Yong-liang,LI Chuan-rong. Effect of different nitrogen sources on pH and phosphorus availability in the root-soil interface zone of Pinus massoniana[J]. Journal of Fujian College of Forestry, 2009, 29(4) |
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| Authors: | CHEN Yong-liang LI Chuan-rong |
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| Abstract: | The effects of different nitrogen sources on pH and the phosphorus availability in the root-soil interface zone of Pinus massoniana were studied by means of root-mat method.The results revealed that the addition of NH+4-N decreased the pH in the root-soil interface,while the addition of NO-3-N increased the pH in contrast with the control treatments.When fertilized with soluble P(PS),the pH change in the root-soil interface induced from different nitrogen forms changed little and the content of available P ... |
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| Keywords: | pH nitrogen sources root-soil interface pH P availability Pinus massoniana |
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