STUDY ON THE MECHANISM OF SOYBEAN’ S FERTILIZING SOIL 5 .The effect of soybean on thestructure of the tilith soil(PDF)

《大豆科学》[ISSN:1000-9841/CN:23-1227/S]

Title:: STUDY ON THE MECHANISM OF SOYBEAN’ S FERTILIZING SOIL 5 .The effect of soybean on thestructure of the tilith soil

Author(s):: Ma Heping 　Gong Zhenping 　Wang Guoy i　Jiao Jingyu 　Yue Caijun 　Shen Changpu; Northeast Agricultural University , Harbin 150030

Keywords:: Soybean ; Soil st ructure ; Water stable aggergate ; Water stable index ; Equivalent pore

Abstract:: The co ntent of soil w ater stable agg regates reaches the max imum value during soybean blooming andpodding stage , w hich is 31 .7 % hig her than it’ s seedling stage .The co rn plot also reaches the maximum valueat the same stage , w hich is 22 .9 % hig her than it’ s seedling stage .During the soybean havesting stage , thestable aggregates are 15 .9 % higher than i t’ s seedling stage and the corn plot decreases by 32 .8 %.The waterstable index(0 .5 -1mm and 1mm -2mm aggregates)is 17 .5 % higher than corn plo t .From the point of waterenergy , the w ater in w hich may be easy to be absorbed by root , soybean , plot is hig her than corn plot all along .

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Last Update: 2016-12-29