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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