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| Research on leakage of nitrogen in the rotation field of rice and wheat under the conservation tillage |
| Yang Xie1,2,Zhao Xiejing1,2,Wang Changquan2,Wang Changtao1 |
1.Soil and Fertilizer Institute,Sichuan Academy of Agriculture Sciences,610066,Chengdu;2.College of Resources and Environment Sciences,Sichuan
Agricultural University,625014,Ya'an,Sichuan: China |
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Abstract The purpose of this experiment was to research the leakage of nitrogen at the 60 cm depth of the rice field under the conservation tillage.The results showed that there was more NO-3-N losing in the rice field than NH+4-N no matter it was tillage,no tillage or straw cover.From a certain angel,no tillage and straw cover played a promotional role for leakage of NO-3-N.
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Received: 21 November 2007
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