Acta Agrestia Sinica

›› 2000, Vol. 8 ›› Issue (3): 204-209.DOI: 10.11733/j.issn.1007-0435.2000.03.008

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Influence of Potassium on Heat Resistance of Kentucky Bluegrass

Zhu Meijun, Fan Fencheng, Wang Pei, Wang Kejian   

  1. 1. Institute of Grassland Science, China Agricultural University, Beijing, 100094;
    2. Institute of Forestry and Fruit of Beijing, Beijing, 100093
  • Received:2000-03-09 Revised:2000-06-09 Online:2000-08-15 Published:2000-08-15

钾肥对草地早熟禾抗热性的影响

祝美俊, 樊奋成, 王培, 王克建   

  1. 1. 中国农业大学草地所, 北京100094;
    2. 北京市农林科学院林业果树研究所, 北京, 100093

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Abstract: The studies on influence of potassium on heat resistance of Kentucky Bluegrass(Poa pratensis L.)were conducted in summer of 1998 in Beijing.The results shows:medium lethal temperature(LT50)was increased by 6℃or so after applying potash fertilizer;the ratio of K/P was increased and LT50 was increased in the treatments of mixed fertilizer of P and K.

Key words: Potassium, Poa pratensis L., Heat resistance

摘要： 1998年夏季在草坪试验基地研究钾肥对草地早熟禾抗热性的影响。结果表明,施肥后临界半致死温度最高可以提高6℃左右。以单施钾肥1.67gK2O/m2的效果最好。磷钾混施时,随着钾与磷比例的增大,临界半致死温度呈增加趋势。

关键词: 钾, 草地早熟禾, 抗热性

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