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应用生态学报 ›› 1995, Vol. 6 ›› Issue (4): 363-367.

• 研究论文 • 上一篇    下一篇

腐殖酸对小麦抗旱性的生理效应

程扶玖, 杨道麒, 吴庆生   

  1. 安徽农业大学, 合肥 30036
  • 收稿日期:1994-11-09 修回日期:1995-03-31 出版日期:1995-10-25 发布日期:1995-10-25
  • 基金资助:

    安徽省教委基金

Physiological effects of humic acids on drought resistance of wheat

Cheng Fujiu, Yang Daoqi, Wu Qingsheng   

  1. Anhui Agricultural University, Hefei 230036
  • Received:1994-11-09 Revised:1995-03-31 Online:1995-10-25 Published:1995-10-25

摘要: 在干旱气候条件下,喷施腐殖酸钠(HA)、黄腐酸钠(FA)可降低土壤水分损耗,提高小麦叶片持水能力,叶片细胞超氧物歧化酶(SOD)、过氧化氢酶(CAT)活性明显提高,丙二醛(MDA)含量和电解质渗出率明显降低,可减缓叶绿素降解,增强光合速率和光合产物积累,延缓植株衰老,小麦抗旱性增强,千粒重增加。

关键词: 腐殖酸, 抗旱性, 生理效应, 小麦

Abstract: Under dry climate condition, spraying humic acids can decrease the loss of soil moisture and enhance the water retention ability of wheat leaf.The activities of superoxide dismutase (SOD) and catalase (CAT) in leaf cells are significantly increased, but the MDA content and leakage rate of electrolyte are significantly decreased, and hence, the chlorophyll decomposition is retarded, the photosynthetic rate and grain filling intensity are increased.the plant senescence is retarded, the drought resistance of wheat is enhanced and its thousand-grain weight is increased.

Key words: Humic acids, Drought resistance, Physiological effect, Wheat