| 不同浓度氨源引起的红松苗木根际pH变化及其对Fe、Mn、Cu、Zn有效性和吸收的影响 |
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| 引用本文： | 陈永亮,程国玲,等.不同浓度氨源引起的红松苗木根际pH变化及其对Fe、Mn、Cu、Zn有效性和吸收的影响[J].林业研究,2002,13(1):37-40. |
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| 作者姓名： | 陈永亮 程国玲 |
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| 作者单位： | [1]中科院应用生态研究所，沈阳110016 [2]东北林业大学，哈尔滨150040 |
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| 摘 要： |
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| 关 键 词： | 根际pH 微量元素 有效性 吸收 红松 氮源 |
| 收稿时间： | 12 January 2002 |
The rhizosphere pH change ofPinus koraiensis seedlings as affected by N sources of different levels and its effect on the availability and uptake of Fe, Mn, Cu and Zn |
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| Chen Yong-liang,Han Shi-jie,Zhou Yu-mei.The rhizosphere pH change ofPinus koraiensis seedlings as affected by N sources of different levels and its effect on the availability and uptake of Fe, Mn, Cu and Zn[J].Journal of Forestry Research,2002,13(1):37-40. |
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| Authors: | Chen Yong-liang Han Shi-jie Zhou Yu-mei |
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| Institution: | (1) Institute of Applied Ecology, Chinese Academy of Sciences, 150016 Shenyang, P. R. China |
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| Abstract: | Dark brown forest soil was collected from the upper 20 cm soil layer in Changbai Mountain Research Station of Ecosystem, Chinese
Academy of Sciences. The soil was amended with two different forms of nitrogen fertilizers: NO3 as Ca(NO3)2, NH4
+ as NH4Cl at the concentrations of 50, 100, 200 and 400 mg kg−1respectively. The experiment was carried out with 2-yr-oldPinus koraiensis seedlings in pot. The pH change of rhizosphere soil and the contents of available Fe, Mn, Cu, and Zn in soil and leaves were
analyzed. The result indicated that the addition of NH4-N decreased the rhizosphere pH value, while the addition of NO3-N increased the rhizosphere pH value in contrast with the control treatment. The direction and extent of the pH change mainly
depended on N source and its concentrations applied. The rhizosphere pH change had a remarkable influence on the availability
of the micronutrients in the rhizosphere, and thereafter affected the nutrient uptake by the seedlings. The contents of available
mineral nutrients had a negative correlation with the pH value in the rhizosphere soil. The contents of available mineral
nutrients in leaves were positively correlated to the levels of the available nutrients in the rhizosphere soils.
Foundation item: This paper was supported by National Natural Science Foundation of China (Grant No. 30170167).
Biography: CHEN Yong-liang (1969-), male, Ph. Doctor, lecture of Northeast Forestry University, Harbin 150040, Post-doctor in Institute
of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, P. R. China.
Responsible editor: Song Funan |
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| Keywords: | Rhizosphere pH N sources Micronutrient Availability Uptake |
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