Acta Agriculturae Boreali-Sinica ›› 2023, Vol. 38 ›› Issue (3): 100-107. doi: 10.7668/hbnxb.20193771

Special Issue: Wheat Soil fertilizer Hot Article

• Resources & Environment·Plant Protection • Previous Articles     Next Articles

Effects of Irrigation and Topdressing Nitrogen at Jointing Stage on Grain Yield and Quality of Furrow-seeding Wheat in Dryland

WU Jinzhi1, LI Shujing1, LI Guoqiang2, HUANG Ming1, FU Guozhan1, LI Youjun1, JIANG Xiang3, FENG Ye3   

  1. 1 College of Agriculture,Henan University of Science and Technology,Luoyang 471023,China
    2 Institute of Agricultural Economics and Information,Henan Academy of Agricultural Sciences,Zhengzhou 450002,China
    3 Henan Extension Station for Agricultural Techniques,Zhengzhou 450002,China
  • Received:2022-10-14 Published:2023-06-28

Abstract:

In order to explore the effects of irrigation method and topdressing nitrogen on grain yield,quality and nitrogen accumulation and translocation of furrow-seeding wheat in dryland,a field experiment including five treatments,i.e.no irrigation and no topdressing nitrogen(NIND),every furrow irrigation and no topdressing nitrogen(EFIND),alternative furrow irrigation and no topdressing nitrogen(AFIND),every furrow irrigation and topdressing nitrogen(EFITD)and alternative furrow irrigation and topdressing nitrogen(AFITD),were set at jointing stage based on a no-tillage furrow-seeding wheat field from October 2019 to June 2020.The grain yield and its components,main quality index,as well as the shoot nitrogen accumulation,translocation and distribution were measured.The results showed that irrigation at jointing stage,irrigation mode and topdressing nitrogen significantly regulated the yield,quality and nitrogen accumulation and translocation of furrow-seeding wheat in dryland,and the regulation effects was additive.Compared with NIND,the grain yields in EFIND,AFIND,EFITD and AFITD were significantly increased by 46.57%,67.72%,83.71%,95.88%,as well as the nitrogen accumulation at anthesis,the post-anthesis nitrogen accumulation and its contribution rate to grain were significantly increased,so the nitrogen accumulation amounts at maturity were significantly increased by 25.94%,41.00%,65.86%,82.64%.Compared with NIND,the quality in EFIND,AFIND and EFITD was significantly decreased,while that in AFITD did not decrease or even significantly increased.Compared with EFI,AFI did not affect the nitrogen accumulation at anthesis,but significantly increased the post-anthesis nitrogen accumulation,and thus significantly increased the total nitrogen accumulation at maturity and grain nitrogen accumulation.Finally,compared with EFI,the grain yield in AFI was significantly increased,but the difference of quality indexes except the sedimentation value was not significant under ND,while the significant improvement of grain yield and various quality indexes was observed under TD.Compared with ND,the nitrogen accumulation at anthesis,pre-anthesis nitrogen accumulation and its translocation amount,post-anthesis nitrogen accumulation and its contribution rate to grain in TD were significantly increased,and thus the shoot nitrogen accumulation and grain nitrogen distribution rate at maturity were also significantly increased,so the grain yield,grain nitrogen accumulation and grain quality were significantly improved.Moreover,the regulation effect on quality under AFI was greater than that under EFI.In conclusion, AFITD could not only improve the shoot nitrogen accumulation at anthesis and after anthesis, but also significantly increased the amount of pre-anthesis nitrogen translocation to grain, and the shoot nitrogen accumulation and its distribution rate in grain at maturity, thus finally synergistically improved grain yield and quality of furrow-seeding wheat. Therefore, alternative furrow irrigation combined with topdressing nitrogen at jointing stage could be recommended as an alternative mode in dryland.

Key words: Wheat, Dryland, Alternative furrow irrigation, Topdressing nitrogen, Furrow-seeding, Yield, Quality

Cite this article

WU Jinzhi, LI Shujing, LI Guoqiang, HUANG Ming, FU Guozhan, LI Youjun, JIANG Xiang, FENG Ye. Effects of Irrigation and Topdressing Nitrogen at Jointing Stage on Grain Yield and Quality of Furrow-seeding Wheat in Dryland[J]. Acta Agriculturae Boreali-Sinica, 2023, 38(3): 100-107. doi: 10.7668/hbnxb.20193771.

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