Agronomical traits associated with yield and yield components of winter wheat as affected by nitrogen managements

Saudi Journal of Biological Sciences

Yongkai Xie¹  Nadir Ali Rind¹  Fahad Ali Kalhoro¹  Chenbo Yang²  Hidayat Ullah²  Kristina Gasparovic²  Ahmad El Askary³  Marian Brestic³  Muhammad Saleem Kubar³  Meichen Feng³  Mohamed El-Sharnouby³  Wude Yang⁴  Shahmir Ali Kalhoro⁴  Akhtar Hussain Shar⁴  Samy Sayed⁵  Maria Barboricova⁶ 

[1] Genetics, Faculty of Science &Technology, Shaheed Benazir Bhutto University, Shaheed Benazirabad, Sindh, Pakistan;College of Agriculture, Shanxi Agricultural University, Taigu 030801, PR China;;Department of Molecular Biology &Department of Science and Technology, University College-Ranyah, Taif University, B.O. Box 11099, Taif 21944, Saudi Arabia;Faculty of Agriculture, Lasbela University of Agriculture, Water and Marine Sciences, Uthal 90150, Baluchistan, Pakistan;

关键词: Winter wheat;    Nitrogen application amount;    Base dressing ratio;    Yield;   

DOI  :  

来源: DOAJ

【 摘 要 】

Nitrogen fertilizer is one of the key elements to increase the yield and significance of winter wheat. The experiment was established in the split zone design and was repeated three times. The nitrogen application level is set to 4 treatments, 75, 150, 225 and 300 kg ha−1 are arranged in the main plot, and different nitrogen application ratios are arranged in the sub-plots, respectively 5:5 (50%+50%) and 6: 4 (60%) + 40%). Nitrogen fertilizer was applied before sowing, jointing stage, flowering stage and filling stage. The experimental plot is 12 m2 (3 m × 4 m). The results showed that under the conditions of 225 kg/hm2 nitrogen application and 60%+40% nitrogen application rate, the yield of Jintai 182 was the highest compared with other treatment groups. With the increase of nitrogen application rate, the number of ears, grains per ear, thousand-grain weight and grain yield all increase first and then decrease. Each factor reached the highest 225 N kg / hm2, 417.17, 30.74, 40.96 g and 6182.11 kg / hm2. Compared with 75 kg/hm2 topdressing fertilizer, 225 kg/hm2 is a more suitable nitrogen fertilizer application rate for winter wheat. Within a reasonable range of nitrogen fertilizer application, there is a significant positive correlation between nitrogen content and winter wheat yield. By studying the amount of nitrogen fertilizer and a reasonable ratio of base fertilizer to topdressing, the utilization rate of nitrogen fertilizer can be maximized and excessive application of nitrogen fertilizer can be avoided.

【 授权许可】

Unknown