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当前位置: 首页 > 文章 > 辽西低山丘陵区荆条根系特征与生长分布规律 辽宁林业科技 2019 (5) 17-20,70
Position: Home > Articles > Root system characteristics and distribution regularity of Vitex negundo in hilly area of western Liaoning WANG Fengbai, SUN Haihong Liaoning Forestry Science and Technology 2019 (5) 17-20,70

辽西低山丘陵区荆条根系特征与生长分布规律

作  者：
王锋佰;孙海红
单  位：
辽宁省沙地治理与利用研究所
关键词：
荆条;辽西低山丘陵区;根系;生长规律;水土保持
摘  要：
该文采用野外调查与室内试验等手段,研究辽西低山丘陵区不同林龄荆条根系特征与生长分布规律.结果表明:随着荆条年龄的增长,主要侧根根长与株高的比值有减小的趋势,1年生的荆条根茎比最大为3.25~3.44,4年生的荆条根茎比为2.67~2.78;侧根长和株高具有较好的线性关系,荆条年龄与根茎比具有较好的3次函数关系.随着根系的延伸,其他侧根根系生物量逐渐减少,随着荆条年龄的增加,其他侧根总量增加.随着荆条株密度增大,荆条样地土壤内根系生物量逐渐增大,表现为YD大(株密度大的样地)>CG(荒草地)>YD中(株密度中等样地)>YD小(株密度小的样地);随着株密度的增加,荆条根系密度随之增加,CG>YD大>YD中>YD小.
译  名：
Root system characteristics and distribution regularity of Vitex negundo in hilly area of western Liaoning WANG Fengbai, SUN Haihong
作  者：
WANG Fengbai;SUN Haihong;Liaoning Institute of Sandy Land Management and Utilization;
关键词：
Vitex negundo;;hilly area of western Liaoning;;root system;;growth regularity;;conservation of water and soil
摘  要：
In this study root system characteristics and distribution regularity of different ages of Vitex negundo were studied by field survey and laboratory test. The results showed that the ratio between main lateral root length and stem height decreased with age. The root shoot ratio of 1-year old V. negundo was 3.25～3.44, and that of 4-year old was 2.67～2.78.The lateral root length had a good linear relationship with plant height, and the age of V. negundo had a good cubic function relationship with root shoot ratio. The lateral root biomass decreased gradually with the extension of root system and the other lateral roots increased with age increasing of V. negundo. The root biomass in soil gradually increased with increasing of plant density, which was ranged as following sequence: YD(high plant density)>CG(waste grassland)>YD(moderate plant density) >YD(low plant density). The root density increased with the increasing of plant density, CG(waste grassland)> YD(high plant density)>YD(moderate plant density) >YD(low plant density).

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