| Differences of absorption and utilization for nitrogen in jujube tree/wheat agroforestry system in Hetian |
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| DOI：10.7606/j.issn.1000-7601.2018.05.22 |
| Key Words: jujube tree wheat nitrogen the differences of absorption and utilization |
| Author Name | Affiliation | | ZHANG Wei | Farming Staff Room, College of Agronomy,Shihezi University, Shihezi, Xinjiang 832003, China | | DUAN zhi-ping | Farming Staff Room, College of Agronomy,Shihezi University, Shihezi, Xinjiang 832003, China | | HAO Xiang-dong | Farming Staff Room, College of Agronomy,Shihezi University, Shihezi, Xinjiang 832003, China | | LIN Hai-rong | Farming Staff Room, College of Agronomy,Shihezi University, Shihezi, Xinjiang 832003, China | | WANG Bao-ju | Farming Staff Room, College of Agronomy,Shihezi University, Shihezi, Xinjiang 832003, China | | Gan Ya-wen | Farming Staff Room, College of Agronomy,Shihezi University, Shihezi, Xinjiang 832003, China | | LI Lu-hua | Farming Staff Room, College of Agronomy,Shihezi University, Shihezi, Xinjiang 832003, China |
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| Abstract: |
| Field experiments were conducted to investigate differences of nitrogen acquisition, and utilization in soil depths, and clarify the compensatory mechanism of space niche for efficiently utilizing nitrogen in jujube tree/wheat intercropping system. Junzao-winter wheat No.20 intercropping system was tested and its nitrogen acquisition and utilization were determined by 15N stable isotope labeling The results showed intercropping system with higher nitogen acquisition,NDFF and nitrogen use effecency〓than which weighted average of mono cropping system.Nitrogen use effecency of jujube tree was lower than which of wheat. The lowest value of UFN in all treatments were observed at the imbedding depths of 120 and 200 cm of 15N. The findings suggest fertilizing in the system to mitigate nitrogen competition between jujube tree and wheat. |
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