| 塿土农业生态系统中微量元素研究Ⅰ不同施肥处理土壤微量元素的消长规律 |
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| 引用本文： | 李辉桃,李全新,李昌纬.塿土农业生态系统中微量元素研究Ⅰ不同施肥处理土壤微量元素的消长规律[J].西北农林科技大学学报(社会科学版),1995,23(3):25-30. |
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| 作者姓名： | 李辉桃 李全新 李昌纬 |
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| 作者单位： | 西北农业大学农化系 |
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| 基金项目： | 农业部“七五”攻关课题 |
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| 摘 要： | 根据８年化肥、有机肥配合试验，研究Ｍｏ、Ｂ、Ｚｎ、Ｍｎ、Ｃｕ、Ｆ、Ｃｄ在土中的消长规律。结果表明，有机肥极显著提高有效Ｍｏ、Ｚｎ、Ｍｎ、Ｃｕ的含量；磷肥极显著降低有效Ｍｎ、极显著提高水溶性下的含量。在当前生产条件下，欲维持土壤中Ｍｏ、Ｚｎ、Ｍｎ、Ｃｕ的原供应水平，每年应施３７．５ｔ／ｈｍ￣２优质厩肥或７５ｔ／ｈｍ￣２土粪。有机肥施用量和土壤中Ｚｎ、Ｍｎ、Ｃｕ、Ｆ、Ｃｄ的消长值之间有显著的相关关系。
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| 关 键 词： | 农业生态系统，长期肥料试验，微量元素，消长规律 |
A Study of the Lou soil Trace Elements in the Agricultural Ecological System |
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| Abstract: | This study deals with the fluctuation of Mo,B,Zn,Mn,Cu,F and Cd in
Lou soil with the application of fertilizer and organic manure.The 8-years research
showed that the organic manure could increase the levels of available Mo,Zn,Mn and Cu
dramatically.The P fertilizer had significant effects upon both the decrease of the available Mn and the increase of the soluble F.To maintain the levels of available Zn,Mn,Cu
and Mo in soil,37.5 t/hm2,of mature or 75 t/hm2 of farmyard manure should be applied
every year.There existed a remarkable positive correlation between the levels of Zn,
Mn,Cu,F,Cd and the amount of the organic manure added to the soil. |
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| Keywords: | agricultural ecological system long period of research in fertilizer trace
element fluctuation rule |
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