›› 2012, Vol. 29 ›› Issue (1): 161-166.

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Effects of Nitrogenous Fertilizer Application on Biological Properties and Water Use Efficiency of Rice under Different Water Regimes

PAN Sheng-gang1,2,HUANG Sheng-qi1,WANG Jin-ping1,ZHAN Ming1,CAI Ming-li1, CAO Cou-gui1,TANG Xiang-ru2,Guo Xi2   

    1. Center for Crop Cultivation and Physiology, Huazhong Agricultural University, Wuhan 430070, China
    2. College of Agriculture, South China Agricultural University, Guangzhou 510642, China
  • Received:2010-12-02 Revised:2011-01-02 Online:2012-01-15 Published:2012-02-27

Abstract: Effects of nitrogenous fertilizer management on the biological properties and water use efficiency of rice under different water regimes were studied using a rice cultivar in a field study. The cultivar was grown under traditional flooding irrigation (W1), wetting-drying alternative irrigation (W2) and bed-raised irrigation (W3) at four nitrogenous fertilizer application levels (0, 90, 180 and 270 kg/hm2, i.e. F0, F1, F2 and F3, respectively). Compare with W1, the MDA content in flag leaves at grain filling stage under W2 and W3 was decreased by 8.7% and 9.4%, rice yield was increased by 2.5% and 9.15, water consumption was decreased by 17.8% and 17.6%, and water use efficiency was increased by 25.0% and 32.5%, respectively. Under the same water regime, rice yield under F2 was significantly higher than that under other nitrogenous fertilizer application levels. Compared with the cultivation situation without applying nitrogenous fertilizer, root sap under F2 was increased by 28.4%, and the MDA content in flag leaves was decreased by 12.4%. Rice yield and water use efficiency under different treatments were also concerned.

Key words: rice, irrigation mode, nitrogenous fertilizer, biological property, water use efficiency