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›› 2009, Vol. 29 ›› Issue (5): 544-548.doi: 10.7525/j.issn.1673-5102.2009.05.008

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Effects of Controlled Release Nitrogen Fertilizer on the Growth and Photosynthetic Characteristics of Hosta ventricosa

WANG Wei;DONG Ran;LI Xiao-Dong;SUN Guo-Feng;ZHANG Jin-Zheng*;JIANG Chuang-Dao   

  1. (1.Institute of Botany,the Chinese Academy of Sciences,Beijing100093) (2.Department of Horticulture,Jilin Agricultural University,Changchun130118)
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-09-20 Published:2009-09-20
  • Contact: ZHANG Jin-Zheng

Abstract: Effects of controlled release nitrogen fertilizer(CRNF) on the growth and photosynthetic characteristics of Hosta at different growth stages were studied in this paper using H.ventricosa potted seedlings under 50% shade condition. The results showed as follows: N1 treatment(4 g CRNF) and N2 treatment(8 g CRNF) could increase dry weight at different growth stages of Hosta; could significantly increase Chlb content at morphogenesis stage(MS), Chla, Chlb and Car. contents at booting stage(BS) and flowering stage(FS); and could significantly increase Pn at different growth stages of Hosta. Fv/Fm, ФPSⅡ, Fv/Fm of N1 treatment were significantly higher than control at BS and FS, Fv/Fm, ФPSⅡ, Fv/Fm of N2 treatment were significantly higher than control at MS and FS, while only Fv/Fm at BS. There were no significant differences in qP between all CRNF treatments and control with the except N1 treatment at MS. NPQ of all CRNF treatments had no significant differences with control at MS, but significantly lower than control at BS and FS.

Key words: Hosta ventricosa, Controlled release nitrogen fertilizer(CRNF), Growth, Photosynthetic characteristics, Chlorophyll fluorescence

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