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Subtropical Plant Science

Subtropical Plant Science ›› 2004, Vol. 33 ›› Issue (01): 12-15.

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Effects of foliar spray of N and Fe on cold resistance of centipedegrass in late autumn

LIU Jin-ping1, YOU Ming-hong1,2, MAO Kai1, ZHANG Xin-quan1   

  1. 1. Department of Grassland Science, Sichuan Agricultural University, Yaan 625014, Sichuan China;
    2. Sichuan Institute of Grassland, Chengdu 611731, Sichuan China
  • Received:2003-10-08 Online:2004-03-10 Published:2004-03-10

秋冬季叶施N、Fe提高假俭草草坪抗寒性研究

刘金平1,游明鸿1,2,毛凯1,张新全1   

  1. 1. 四川农业大学 草业科学系, 四川 雅安 625014;
    2. 四川省草原研究所, 四川 成都 611731
  • 作者简介:刘金平(1972-),男,山西临县人,博士研究生,从事草坪草研究。
  • 基金资助:

    四川省青年基金资助项目(02ZQ026-057)

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Abstract: Various rates of complex fertilizer of urea and EDTA-Fe were applied on centipedegrass leaves in late autumn to evaluate the effects of N and Fe on cold resistance of centipedegrass. The results showed that treatments of Fe or N+Fe increased the contents of matter correlated with cold resistence. 0.6L/m2 Fe fertilizer increased the contents of proline, soluble carbohydrate and catalase by 25%, 310% and 180%, respectively; 0.4g/m2N+0.6L/m2 Fe fertilizer increased the contents of proline, soluble carbohydrate and catalase by 41%, 182% and 160%, respectively and gave the best result for cold resistance of centipedegrass. Foliar spray of N+Fe prolonged the green period of centipedegrass and dropped the medial lethal temperature for 3~4℃.

Key words: centipedegrass, turf, Fe, N, late autumn, cold resistance

摘要： 在过渡性气候地区的假俭草草坪,宜在最低气温为12℃时(11月中、下旬)叶施Fe,最佳施用浓度为:单施Fe为0.6L/m2,N+Fe为4g/m2 N+0.6L/m2Fe。秋冬季叶施Fe、N+Fe可提高草体内抗寒指标性物质的含量,叶施0.6L/m2 Fe或4g/m2 N+0.6L/m2 Fe,可使草坪草体内脯氨酸、可溶性糖类含量及过氧化氢酶的活性分别提高25%、310%、180%和41%、182%、160%。叶施N+Fe处理的效果比单独施Fe的效果更好,施后草坪枯黄期比对照组推迟6~8d,半致死温度降低3~4℃。

关键词: 假俭草, 草坪, Fe, N, 秋冬季, 抗寒性

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