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Chinese Agricultural Science Bulletin ›› 2023, Vol. 39 ›› Issue (33): 14-18.doi: 10.11924/j.issn.1000-6850.casb2022-0948

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Effects of Foliar Fertilizer Spraying on Black Point, Yield and Quality of Spring Wheat

KONG Dezhen(), SANG Wei, XU Hongjun(), HAN Xinnian, NIE Yingbin, TIAN Xiaoming   

  1. Institute of Crop Research, Xinjiang Academy of Agri-reclamation Sciences/Key Lab of Xinjiang Production and Construction Corps for Cereal Quality Research and Genetic Improvement, Shihezi, Xinjiang 832000
  • Received:2022-11-10 Revised:2023-02-12 Online:2023-11-25 Published:2023-11-22

Abstract:

To provide the theoretical basis for the high-quality and high-yield cultivation of the strong gluten spring wheat ‘Xinchun38’, the effect of foliar fertilizer (KH2PO4 and brassinolide) in different periods of filling stage on black point disease, yield and quality was studied. The results showed that two times mixed spraying of KH2PO4 and brassinolide increased yield by 27.9% compared with the control, 1000-kernel weight could be significantly increased, the number of sterile spikelets decreased, and the black point rate reduced from 21% to 16.8%. After a mixed spray of foliar fertilizer, the protein content, wet gluten content and precipitation values of the granules increased by 1%, 0.7% and 4.54% compared with the control, respectively. When single spraying KH2PO4, the dough development time and stability time increased by 0.6 and 0.7 min. The tensile curve and the stretch area increased by 22 cm2 and 91 BU. The single spraying of brassinolide had no significant effect. Therefore, early mixed spraying of foliar fertilizer in wheat filling stage can effectively reduce the occurrence of black point of spring wheat ‘Xinchun38’ and improve yield and quality.

Key words: Xinchun38, foliar fertilizer, black point, quality