Improving Winter Wheat Photosynthesis, Nitrogen Use Efficiency, and Yield by Optimizing Nitrogen Fertilization

被引:12
|
作者
Kubar, Muhammad Saleem [1 ]
Alshallash, Khalid S. [2 ]
Asghar, Muhammad Ahsan [3 ]
Feng, Meichen [1 ]
Raza, Ali [4 ]
Wang, Chao [1 ]
Saleem, Khansa [5 ]
Ullah, Abd [6 ]
Yang, Wude [1 ]
Kubar, Kashif Ali [7 ]
Yang, Chenbo [1 ]
Selim, Samy [8 ]
Latef, Arafat Abdel Hamed Abdel [9 ]
Safhi, Fatmah Ahmed [10 ]
Alshamrani, Salha Mesfer [11 ]
机构
[1] Shanxi Agr Univ, Coll Agr, Taigu 030801, Peoples R China
[2] Imam Mohammed Bin Saud Islamic Univ IMSIU, Coll Sci & Humanities Huraymila, Riyadh 11432, Saudi Arabia
[3] ELKH, Agr Inst, Ctr Agr Res, H-2462 Martonvasar, Hungary
[4] Chinese Acad Sci, Univ Chinese Acad Sci, Chengdu Inst Biol, Chengdu 610041, Peoples R China
[5] Islamia Univ Bahawalpur, Dept Hort Sci, Bahawalpur 63100, Punjab, Pakistan
[6] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Xinjiang Key Lab Desert Plant Roots Ecol & Vegeta, Urumqi 830011, Peoples R China
[7] Lasbela Univ Agr Water & Marine Sci, Fac Agr, Uthal 90150, Balochistan, Pakistan
[8] Jouf Univ, Coll Appl Med Sci, Dept Clin Lab Sci, Sakaka 72388, Saudi Arabia
[9] South Valley Univ, Fac Sci, Bot & Microbiol Dept, Qena 83523, Egypt
[10] Princess Nourah bint Abdulrahman Univ, Coll Sci, Dept Biol, POB 84428, Riyadh 11671, Saudi Arabia
[11] Univ Jeddah, Coll Sci, Dept Biol, Jeddah 23218, Saudi Arabia
来源
LIFE-BASEL | 2022年 / 12卷 / 10期
关键词
winter wheat; nitrogen; photosynthesis; growth stages; grain yield; GRAIN-YIELD; MANAGEMENT; ACCUMULATION; DENSITY; STRESS; GROWTH; LEAVES; LIGHT; INDEX;
D O I
10.3390/life12101478
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Wheat is the third most producing crop in China after maize and rice. In order to enhance the nitrogen use efficiency (NUE) and grain yield of winter wheat, a two-year field experiment was conducted to investigate the effect of different nitrogen ratios and doses at various development stages of winter wheat (Triticum aestivum L.). A total of five N doses (0, N75, N150, N225, and N300 kg ha(-1)) as main plots and two N ratios were applied in split doses (50%:50% and 60%:40%, referring to 50% at sowing time and 50% at jointing stage, 50% at sowing time + 50% at flowering stage, 50% at sowing time + 50% at grain filling stage, and 60% + 40% N ratio applied as a 60% at sowing time and 40% at jointing stage, 60% at sowing time and 40% at flowering stage, and 60% at sowing time and 40% at grain filling stage in subplots). The results of this study revealed that a nitrogen dose of 225 kg ha(-1) significantly augmented the plant height by 27% and above ground biomass (ABG) by 24% at the grain filling stage, and the leaf area was enhanced by 149% at the flowering stage under 60 + 40% ratios. Furthermore, the N225 kg ha(-1) significantly prompted the photosynthetic rate by 47% at the jointing and flowering stages followed by grain filling stage compared to the control. The correlation analysis exhibited the positive relationship between nitrogen uptake and nitrogen content, chlorophyll, and dry biomass, revealing that NUE enhanced and ultimately increased the winter wheat yield. In conclusion, our results depicted that optimizing the nitrogen dose (N225 kg/ha(-1)) with a 60% + 40% ratio at jointing stage increased the grain yield and nitrogen utilization rate.
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页数:19
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