南方农业学报2013，Vol.44Issue(6)：930-933,4.DOI:10.3969/j:issn.2095-1191.2013.6.930
宿根甘蔗黄化苗根系活力及其营养特性研究
Root activity and nutrition characteristics of etiolated seedling roots in ratoon sugarcane
摘要
Abstract
[Objective]The root activity and nutrition characteristics of etolated seedling roots were studied for ratoon sugarcane to ascertain the relationship between etiolation of ratoon sugarcane seedlings and element absorbing capability of roots.[Method]The roots of etolated seedling and normal seedling in ratoon sugarcane field,and normal new planting sugarcane seedlings were sampled to determine root activity,and the contents of N,P,K,Fe,Mn,Cu,Zn,Mg,B and S elements.[Result]The root activity of ratoon etiolated seedling roots was significantly lower than those of ratoon normal seedling roots and new planting sugarcane roots.The N content of etiolated seedling roots was shghtly higher than that of ratoon normal seedling roots,while was lower than that of new planting sugarcane roots.The contents of P,K,Fe,Mn,Cu,Zn,Mg,B and S of etiolated seedling roots were significantly lower than those of ratoon normal seedling roots and new planting sugarcane roots.The new planting sugarcane seedlings had the highest element contents.[Conclusion]The etiolated root exhibited weak activity and had not enough mineral elements,so it could not absorb mineral elements from the soil.关键词
宿根甘蔗/黄化苗/根系活力/营养特性Key words
ratoon sugarcane/etiolated seedling roots/root activity/nutrition characteristics分类
农业科技引用本文复制引用
罗维钢,刘要鑫,仇惠君,韩世健,裴铁雄,兰靖,陈永,吴广成,陆国盈..宿根甘蔗黄化苗根系活力及其营养特性研究[J].南方农业学报,2013,44(6):930-933,4.基金项目
国家现代农业产业技术体系建设专项项目(CARS-20) （CARS-20）
广西研究生创新计划项目(T32592) （T32592）
