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Acta Agron Sin ›› 1994, Vol. 20 ›› Issue (04): 401-410.

• ORIGINAL PAPERS • Previous Articles     Next Articles

Studies on the Dates of Various Phases of Spike Differentiation of Winter Wheat in Beijing Area

Cheng Yan-nian   

  1. Agrometeorological institute, CAAS Beijing 100081
  • Received:1992-02-15 Revised:1993-02-21 Online:1994-07-12 Published:1994-07-12
  • Contact: Cheng Yan-nian

Abstract: 14yeas (1971-1984) data of field tests were analyzed to study the relationship between temperature and sunshine hours and the occurrence of various phase of spike differentiation of winter wheat in Beijing area, models for the various phase were established, and their effects on the number of grains

Key words: Winter wheat, Spike differentiation, Date of occurrence, Temperature, Sunshine hours, Model

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