[1]张根柱,张社奇,邵丽,等.外源柠檬酸对黄土高原塿土土壤养分的影响[J].西北林学院学报,2011,26(02):47-51.
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外源柠檬酸对黄土高原塿土土壤养分的影响()
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《西北林学院学报》[ISSN:1001-7461/CN:61-1202/S]

卷:
第26卷
期数:
2011年02期
页码:
47-51
栏目:
森林生物学
出版日期:
2011-03-30

文章信息/Info

作者:
张根柱;张社奇;邵丽;王菲;章兰芬;
西北农林科技大学理学院;
关键词:
黄土高原植被恢复退耕还林塿土外源柠檬酸根际土壤养分
文献标志码:
A
摘要:
为研究黄土高原植被恢复、退耕还林过程中根际分泌的柠檬酸对土壤养分、pH的影响,通过对石灰性土壤塿土施用外源柠檬酸,模拟根际柠檬酸环境。结果表明,施用外源柠檬酸后:(1)土壤全氮含量随柠檬酸施用天数的增加大体上有升高的趋势,土壤水解性氮含量随时间、外源柠檬酸浓度的增加而递减;(2)土壤全磷含量变化不大;(3)有效磷含量变化以40 d左右为过渡,前期土样随外源柠檬酸浓度的升高而减少,后期随柠檬酸升高而增加;(4)土壤pH与有效磷含量的变化规律呈极显著负相关;(5)有机质含量变化规律复杂。柠檬酸对土壤养分各指标的影响不同,但相互联系。

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备注/Memo

备注/Memo:
国家自然科学基金(40771109);;陕西省科技攻关项目(2007K01-15-1)
更新日期/Last Update: 2010-03-20