中国蔬菜Issue(1)：31-36,6.
不同铵硝配比对芥蓝伤流液组分及植株氮磷钾积累的影响
Effects of Different Ammonium and Nitrate Ratios on Chinese Kale Bleeding Sap Component and Its Plant Nitrogen,Phosphorus and Potassium Accumulation
摘要
Abstract
In order to investigate the physiological mechanism of different NH4+/NO3- ratio(0∶100, 10∶90,25∶75,50∶50)regulating the growth of Chinese kale(Brassica albograbra L.H.Bailey), exudate composition and plant nutrient were analyzed. The results showed that compared with the control (CK)treatment,the biomass and bleeding intensity were significantly improved by ammonium enhancement treatments,in which T2 treatment had the maximum value. T1 treatment increased soluble protein-N and P flux in bleeding sap significantly,compared with the control. T2 treatment had the highest flux of NO3--N,P,Kin bleeding sap. The highest flux of NH4+-N,free amino acid-N and soluble protein-N were found in T3 treatment,while each NO3--N and K flux was lower than that of the CK. Compared with CK,the concentration and accumulation of N,P and K were increased in T1 and T2 treatments,and the concentration and accumulation of K was reduced in T3 treatment. In conclusion,roots absorption capacity,nitrogen metabolism,and the uptake and accumulation of N,P,K were improved by appropriate enhancement(25%)of ammonium in nutrient solution,thereby plant growth was promoted.关键词
铵硝配比/芥蓝/伤流液/营养元素Key words
NH4+/NO3- ratio/Chinese kale/Bleeding sap/Nutrient elements引用本文复制引用
章笑赟,祁百福,宋世威,刘厚诚,孙光闻,苏蔚,陈日远..不同铵硝配比对芥蓝伤流液组分及植株氮磷钾积累的影响[J].中国蔬菜,2014,(1):31-36,6.基金项目
高等学校博士学科点专项科研基金项目（20114404120013），现代农业产业技术体系专项 （）
