| Nitrogen utilization and transformation in red soil fertilized with urea and ryegrass |
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| 引用本文： | WuGang HeZhen－Li. Nitrogen utilization and transformation in red soil fertilized with urea and ryegrass[J]. 核技术(英文版), 1998, 9(3): 176-180 |
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| 作者姓名： | WuGang HeZhen－Li |
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| 作者单位： | [1]InstituteofNuclear－AgriculturalSciences,ZhejiangAgriculturalUniversity,Hangzhou310029 [2]DepartmentofSoi,ZhejiangAgriculturalUniversity,Hangzhou310029 |
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| 摘 要： | The influence of fertilization with urea and ryegrass on nitrogen utilization and transformation in red soil has been studied by using ^15N tracer method.When urea and ryegrass were applied alone or in combination,the percentage of N uptaken by ryegrass from labelled urea was 3 and 1.7 times that from labelled ryegrass for the application rate of 200mgN.kg^-1 and 100mgN.kg^-1,respectively;combining application of ryegrass and ureareduced uptake of urea N and increased uptake of ryegrass N by ryegrass plant,but the percentage of N residued in soil increased for urea and decreased for ryegrass.when urea and ryegrass were applied alone,the percentage of N residued in soil from labelled ryegrass was more than 69% while that from labelled urea was less than 25%,and much more ryegrass N was incorporated into humus than urea N.
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| 关 键 词： | 红色土壤 氮 尿素 麦草 |
Nitrogen utilization and transformation in red soil fertilized with urea and ryegrass |
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| Wu Gang,Zhang Qin Zheng,Ye Qing Fu,Zhu Zhu Jun,Xi Hai Fu. Nitrogen utilization and transformation in red soil fertilized with urea and ryegrass[J]. , 1998, 9(3): 176-180 |
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| Authors: | Wu Gang Zhang Qin Zheng Ye Qing Fu Zhu Zhu Jun Xi Hai Fu |
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| Abstract: | |
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| Keywords: | Nitrogen Utilization Transformation Red soil Ryegrass |
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