摘要
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.
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.
出处
《生态学杂志》
CAS
CSCD
北大核心
2000年第3期28-31,共4页
Chinese Journal of Ecology
基金
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
关键词
玉米
砂痿黑土
根系干重
根系分布
干旱
渍涝
drought,waterlogging,Shajiang black soil,maize,root dry weight.
