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生态学杂志 ›› 2000, Vol. ›› Issue (3): 28-31.

• 研究报告 • 上一篇    下一篇

干旱与渍涝对砂姜黑土玉米根系干重变化及其分布的影响

杨青华, 高尔明, 马新明   

  1. 河南农业大学农学院, 郑州 450002
  • 收稿日期:1999-05-31 修回日期:1999-07-12 出版日期:2000-06-10
  • 基金资助:
    国家“九五”重大攻关项目“豫东南砂姜黑土区域治理与农业综合开发研究和示范”的部分内容

Effects of Drought and Waterlogging on Root Dry Weight and Its Distribution of Maize in Shajiang Black Soil

Yang Qinghua, Gao Erming, Ma Xinming   

  1. College of Agronomy, Henan Agricultural University, Zhengzhou 450002
  • Received:1999-05-31 Revised:1999-07-12 Online:2000-06-10

关键词: 土壤有机碳, 根系生物量, 土壤含水率, 种间关系, 干旱区, 沙枣-芨芨草群落

Abstract: Under the conditions of drought and waterlogging,the dynamic of root dry weight and its distribution were studied with the method of root cutting collection in shajiang black soil. The result showed that root dry weight and its distribution were largely affected by drought and waterlogging,especially the later. During a drought,root dry weight of maize per plant was higher, and the time of root dry weight increase and decrease were earlier, the speed of roots spreading into deep soil were quicker and many roots were distributed in deeper soil layer. While during a waterlogging, the result was contrary to the above.

Key words: soil organic carbon, root biomass, soil moisture content, interspecific relationship, arid area, Elacagnus angustifolia-Achnatherum splendens community.