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Chinese Journal of Applied Ecology ›› 2020, Vol. 31 ›› Issue (3): 919-928.doi: 10.13287/j.1001-9332.202003.009

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Effects of seeding pattern and phosphorus application on population structure, photosynthe-tic characteristics and yield of winter wheat

LIU Chong1, JIA Yong-hong2, ZHANG Jin-shan1, SUN Peng1, LUO Si-wei1, WANG Huan1, LI Peng1, SHI Shu-bing1*   

  1. 1College of Agronomy, Xinjiang Agricultural University, Urumqi 830052, China;
    2Qitai Wheat Experiment Station, Xinjiang Academy of Agricultural Sciences, Qitai 831800, Xinjiang, China
  • Received:2019-05-21 Online:2020-03-15 Published:2020-03-15
  • Contact: E-mail: shubshi@sina.com
  • Supported by:
    This work was supported by the Xinjiang Uygur Autonomous Region Science and Technology Aiding Program (2016E02003)

Abstract: Under Xinjiang winter wheat seeding pattern, in order to sort out proper phosphorus application (PA) and find out the effects and mechanism of PA on population structure, photosynthesis characteristics and yield and provide reliable evidence for PA management of winter wheat, we arranged a two-factor complete split-plot design of wheat variety “Xindong 22”. The main area consisted of two seeding ways: drill seeding pattern (D) and uniform seeding pattern (U), while in the sub-area there were four levels of PA(P2O5): 0, 60, 120, and 180 kg·hm-2(represented by P0, P60, P120 and P180 for those treatments, respectively). The results showed that the earbearing percentage in U was 15.9% higher than that in D, and the other features (PAR interception rate, extinction coefficient, leaf area index, SPAD and photosynthetic parameters) were more optimal in 120 kg·hm-2 treatment. Our results showed that the 120 kg·hm-2 treatment in U would be the optimal option with respect to population structure, photosynthetic characteristics, and yield.