| 土壤Ca~(2+)、Mg~(2+)量对针叶红化油松形成的影响 |
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| 作者单位： | ;1.内蒙古农业大学沙漠治理学院 |
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| 摘 要： | 【目的】阐明土壤中Ca2+、Mg2+对针叶红化油松形成的影响,提高油松复壮及施肥作业质量。【方法】采用EDTA滴定法,检测正常油松与发生针叶红化油松土壤中Ca2+、Mg2+量。【结果】乌兰察布市与包头市正常油松土壤Ca2+量随土层深度增加而减少,而针叶红化油松土壤Ca2+量不同样地之间部分差异显著(P<0.05),Mg2+量不同样地之间差异显著(P<0.05)。【结论】2个地区土壤中Ca2+和Mg2+量与油松针叶红化现象的发生存在一定的关联性,Ca2+、Mg2+量增加会导致油松针叶红化。
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| 关 键 词： | 油松 针叶红化 Ca2+ Mg2+ |
Analytical Investigation of the Effects of Contents of Ca~(2+) and Mg~(2+) in Soil on Formation of Pinus tabulaeformis with Red Coniferous |
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| Institution: | ,College of Desert Control Science Engineering of Inner Mongolia Agricultural University |
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| Abstract: | 【 Objective 】 We aimed to elucidate the effect of Ca2+ and Mg2+ in soil on the formation of Pinus tabulaeformis coniferous red and improve the rejuvenation and fertilization quality of Pinus tabulaeformis.【Method】The contents of Ca2+ and Mg2+ were determined by EDTA titration.【Result】The content of Ca2+ in the soil of Pinus tabulaeformis decreased with the increase of soil depth in Wulanchabu and Baotou, but there were significant differences(P<0.05) between different plots of Pinus tabulaeformis coniferous red soil Ca2+ content, and significant differences(P<0.05) between different plots of Mg2+ content in these two areas.【Conclusion】The content of Ca2+and Mg2+ may cause the Pinus tabulaeformis needle reddening. |
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| Keywords: | Pinus tabulaeformis needles reddening Ca2+ Mg2+ |
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