| 摘要: |
| 采用８年肥料定位试验，研究有机肥对植株和土壤中Ｚｎ、Ｍｎ、Ｃｕ平衡状况的影响．结果表明，随有机肥用量增加，小麦、玉米籽粒和秸秆中Ｚｎ、Ｍｎ、Ｃｕ的含量降低．每年施用 ３２． ７５ ｋｇ／ｈｍ2 Ｐ和 ３７．５ ｔ／ｈｍ2有机肥，其中的有效 Ｚｎ和 Ｃｕ不能补偿一年两熟的作物携出，有效Ｍｎ有余．土壤对Ｚｎ、Ｍｎ、Ｃｕ的供应有相当的自动调节能力．土壤中３种元素的理论盈亏量和实际消长量之间有显著的相关性． |
| 关键词: 微量营养元素,养分平衡,宏观分析 |
| DOI： |
| 分类号:S141 |
| 基金项目:农业部“六五”攻关课题的部分内容 |
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| Trace Elements in Agro-Ecological System of Lou soil Ⅱ The Effects of Organie Manure on the Balances of Zn Mn and Cu in the Crop-Soil |
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Li Huitao Zhao Boshan Li Changwei Hua Tianmao Zhou Jianbin
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| Abstract: |
| This paper deals with the effect of organic manure on the balance of Zn, Mn and Cu in the plant-soil system. The results show that the contents of Zn, Mn, and Cu in the grain and straw of wheat and corn decrease with the increase of organic manure applied to soil. The applications of 32. 75 kg/ hm2 of P and 37. 5 t/ hm2 of organic manure can't balance the effective Zn and Cu absorbed by wheat and corn with two crops a year, exept Mn. The results also show that soil has the high ability to adjust the supply amount of these three elements. Furthermore, there is a postive relation between the theoretical profit and loss with the actual element comsumption and increase of the three. |
| Key words: micronutrient, balance of nutrients, macroscopic analysis |
