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人参红皮病与土壤生态条件的关系
引用本文:李志洪,田淑珍,孙艳君,郭世伟,刘兆荣.人参红皮病与土壤生态条件的关系[J].生态学报,1999,19(6):864-869.
作者姓名:李志洪  田淑珍  孙艳君  郭世伟  刘兆荣
作者单位:吉林农业大学土化系,长春,130118
摘    要:采用生态样块方法,研究了白浆土区不同地貌生态条件对人参红皮病的影响。结果表明,床土中还原物质浓度随地貌类型而变化,其中活性有机质与参根病情指数相关性最高,成为人参红皮病发生的主要因素;铁的富集是人参红皮病的主要特征,锰为次要因素;高皮铁主要为络合物,包括活性亚铁、活性高铁和非活性铁,它们相互转化,视土壤水分状况为转移;Fe0/Fed与活性有机质相关显著,表明无定形铁是锈斑铁的主要来源;床上土通气性

关 键 词:人参红皮病  周皮铁形态  土壤生态条件  白浆土区
文章编号:1000-0933(1999)05-0864-06
收稿时间:1997/9/25 0:00:00
修稿时间:1999/2/20 0:00:00

Relationship between the genesis of ginseng rust spots and soil ecological conditions
LI Zhihong,TIAN Shuzhen,SUN Yanjun,GUO Shiwei and LIU Zhaorong.Relationship between the genesis of ginseng rust spots and soil ecological conditions[J].Acta Ecologica Sinica,1999,19(6):864-869.
Authors:LI Zhihong  TIAN Shuzhen  SUN Yanjun  GUO Shiwei and LIU Zhaorong
Institution:Dept.of Soil Science and Agrochemistry; Jilin Agricultural University; Changchun; China
Abstract:This paper deals with the ecological relationship between the condition of Ginseng rust spots,the reducing substances in the bed soil and the epidermis iron forms of Ginseng roots within the albic soil region of Jilin lava platform.The results showed that the concentrtion of reducing substances varied in different relief units.The active organic matter was markedly related to the illness index and become the major factor in the genesis of Ginseng rust spots.The enrichment of iron played the first important role in the epidermises of Ginseng roots.The epidermis iron was mainly composed of the organic complexing matter including active ferrous and ferric forms,and non active ferric forms,and they were transformed into each other with the change of soil moisture and temperature regime.The Fe o/Fe d was related to the active organic matter,that implied that amorphous iron in the soil might be the major source of Ginseng epidermis iron.The capacity of air filled pores was higher and the capacity of water holding pores also higher in the bed soil.It suggested that the oxidation reduction process in the soil to be tested happened at the same time,and it was of important significance for the transformation of iron in the bed soil.
Keywords:rust spots of Ginseng  active reducing substances  forms of epidermis iron  soil ecological conditions
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