In 1998,The outgrowing speed of leaves and the grade of leaf color decreased in long-ear phase under high-temperature.And the heading phase delayed one week than every year.

 
  • 1998年長穗期的低溫,使出葉速度和葉色級數減少,導致有效分蘗率降低,齊穗期比歷年延遲一周;
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