Effect of NitRogen Levels and FoRms on GRowth and Uptake of NitRogen and PhosphoRus of HydRoponic Platycodon gRandifloRum
ZHAO Jiao-jiao, YANG Qi-chang, LIU Wen-ke
ACTA AGRICULTURAE BOREALI-SINICA . 2013, (6): 220 -225 .  DOI: 10.7668/hbnxb.2013.06.038