不同覆膜方式对大豆根系空间分布的影响  

EFFECT OF DIFFERENT FILM MULCHING TECHNIQUES ON THE DIMENSIONAL DISTRIBUTION OF SOYBEAN ROOT SYSTEM

作　　者：李丽君[1] 高聚林[1] 罗军[1] 孙继颖[1] 黄振刚[2] 黄复民[2] 呼茹霞 王建明 李树芳 王春波 

机构地区：[1]内蒙古农业大学农学院,呼和浩特010019 [2]扎兰屯市农业技术推广中心,扎兰屯市162650 [3]阿荣旗农业技术推广中心,阿荣旗162750

出　　处：《大豆科学》2007年第5期687-690,共4页Soybean Science

基　　金：教育部新世纪优秀人才支持计划(NCET040264);内蒙古自然科学基金(200408020302)

摘　　要：在行上覆膜、行间覆膜及不覆膜3种不同处理下,对大豆根系在0～20 cm土层的水平分布和距主茎0～15 cm范围的垂直分布进行了系统研究。结果表明,随着土层深度和离主茎距离的增加,根系干重、活力、活跃吸收面积明显减少;同时,宽行分布根系的干重、活力及活跃吸收面积均高于窄行分布的根系干重、活力及活跃吸收面积。不同覆膜方式对根系干重和活力的影响表现为:行间覆膜>行上覆膜>不覆膜;对根系活跃吸收面积的影响则表现为:行上覆膜>行间覆膜>不覆膜。The root vertical distribution of soybean in the range of 0～15 cm from stalk and the root horizontal distribution in 0～20 cm soil were researched systemically in 3 different film mulching treatments, which separately were film mulching on furrows（UPF）,film mulching beside furrows（SPF） ,no film mulching（CK）. The result indicated that the dry weight,the vigor and the active absorbing area of soybean roots reduced obviously with the increase of the soil depth and the distance to the stalk,meanwhile, the dry weight, the vigor and the active absorbing area of soybean roots in wide rows were higher than those in narrow rows. The root dry weight and the root vigor in different fihn mulching treatments were SPF〉 UPF〉CK, but the active absorbing area of soybean roots were UPF 〉 SPF 〉 CK. 　

关 键 词：大豆 覆膜方式 根系 空间分布 

分 类 号：S565.1[农业科学—作物学]