Welcome to Chinese Journal of Tropical Crops,

Chinese Journal of Tropical Crops ›› 2019, Vol. 40 ›› Issue (6): 1062-1067.DOI: 10.3969/j.issn.1000-2561.2019.06.004

• Crop Culture and Nutrition, Genetic Breeding • Previous Articles     Next Articles

Grouting Characteristics and Root Morphology and Filling Degree of Tartary Buckwheat Under Different Nitrogen Fertilizer Application

WANG Yan,LI Zhenzhou,HUANG Kaifeng()   

  1. Technology Research Center of Buckwheat Industry, Guizhou Normal University, Guiyang, Guizhou 550001, China
  • Received:2018-10-12 Revised:2019-01-07 Online:2019-06-25 Published:2019-07-02
  • Contact: HUANG Kaifeng


Tartary buckwheat cv ‘Jinqiao No. 2’ (JQ2) was selected as the material to investigate the changes in the filling characteristics, root morphology, plant agronomic traits, plumpness, and yield of tartary buckwheat with different nitrogenous treatments, in order to provide a theoretical basis and technical support for high-yield cultivation of tartary buckwheat. Medium concentration nitrogen fertilizer treatment (MN treatment) had the most significant effect on grain weight of ‘Jinqiao 2’. The actual 100-grain weight and theoretical maximum 100-grain weight (A), the initial grain filling potential (R0), and growth rate at maximum growth rate during grain filling (Wmax·G) and active growth period were the highest in the MN treatment. Root length, surface area and volume were the highest in the MN treatment. Root-shoot ratio was the highest in the less concentration nitrogen fertilizer treatment (LN). The agronomic traits, plumpness and yield of ‘Jinqiao No. 2’ were basically the best in the LN and MN treatments. In summary, the treatment of medium-concentration nitrogen fertilizer is more conducive to promoting the filling process of bitter buckwheat and improving its fullness and yield.

Key words: nitrogen fertilizer, tartary buckwheat, filling characteristics, root, plumpness, yield

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