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Effect of Root Activity on Vegetative Growth Characteristics of Rotation Soybean(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Issue:
2009年01期
Page:
36-40
Research Field:
Publishing date:

Info

Title:
Effect of Root Activity on Vegetative Growth Characteristics of Rotation Soybean
Author(s):
MA Qi-lin12LEI Wei-ci2Takeshi YAMAGUCHI3Noboru NAKATA3LI Yang-sheng1
1College of Life Science,Wuhan University,Wuhan 430072,Hubei;
2 Faculty of Agriculture,Yangtze University,Jingzhou 434103,Hubei,China;
3Faculty of Agriculture,Tottori University,Tottori 6808553,Tottori,Japan
Keywords:
Soybean(Glycine max(L.)Merr.)Crop rotation systemWaterloggingVegetative growth characteristicsRoot activityNitrogen absorbency
PACS:
S565.1
DOI:
10.11861/j.issn.1000-9841.2009.01.0036
Abstract:
Excessive soil moisture in poorly drained upland field converted from paddy is usually a serious problem to soybean which is an important crop in rotation system.Field experiments were conducted to determine the influence of waterlogging on vegetative growth characteristics(VGC)of forty cultivars of soybean at the seedling stage,and to clarify the relationship between VGC and root function of soybean plants.Vegetative growth had been depressed and varietal difference was found to exist in the dry matter accumulation of rotation soybean.Among the VGC,bleeding sap was mostly influenced by waterlogged treatment,and the ratio of treatment to control of bleeding sap was average 64.2%.Waterlogging led to the nitrogen content in bleeding sap reduced by nearly half,and there was a significant positive correlation between the nitrogen content in bleeding sap and that in leaf.This indicated that the decrease of nitrogen content in leaf was attributed to the depression of nitrogen absorption capacity of root under the condition of excessive soil moisture.The size of soybean individual plants when encountered waterlogging is closely related with the ability of dry matter production.Net dry weight during waterlogged or post waterlogged period is closely related with root activity which represented by bleeding rate.Therefore,it is feasible to maintain dry matter production of soybean plants grown in upland field converted from paddy by improving root activity through crop management technologies.

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Last Update: 2014-09-29