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| Studies on Nitrogen Cycle under Experiment of Long term,Fixed Position Nitrogen Application in Ve getable Field |
| Ge Xiaoguang; Wang Xiaoxue; Fu Yawen; et al. |
| Department of Vegetable Science; Shenyang Agricultural University; 110161 |
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Abstract Under experiment of long term,fixed position N application nitrogen balance,capacity of N reservoir in soil,amount of NH 3 volatilization and NO 3 N leaching and intensity of N cycle were investigated. By calculating sum total of profit and deficit to determine intensity of N balance,the maximum N balance intensity was 269.6%{A 1B 1},the minimum was 49.4%{A 3B 3},average was 162.5%. There was significant corre llation between amount of profit and deficit of N and capasity of N reservoir{r=0.659...
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Received: 01 January 1900
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