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Chinese Agricultural Science Bulletin ›› 2018, Vol. 34 ›› Issue (27): 66-71.doi: 10.11924/j.issn.1000-6850.casb17080133

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Effect of Nitrogen on Photosynthesis, Conductivity and MDA Content of Euonymus fortunei

  

  • Received:2017-08-31 Revised:2018-09-05 Accepted:2017-12-25 Online:2018-09-19 Published:2018-09-19

Abstract: The study aims to clarify the effect of different nitrogen fertilizer amounts onEuonymus fortunei photosynthetic characteristics, to provide a theoretical basis for the cultivation of high quality seedling. The test set 5 treatments as N1 (0 g/plant), N2 (6 g/plant), N3 (12 g/plant), N4 (18 g/plant), N5 (24 g/plant) and 3 repeats. The results showed that nitrogen application could improveEuonymus fortunei net photosynthetic rate, which significantly increased by 132.28% from that of the control under N4 in August; stomatal conductance of N4 and N5 increased by 156.26% and 138.95% respectively compared with that of the control, indicating significant difference; the transpiration rate of N4 increased by 102.18% compared with that of the control, indicating significant difference, while the transpiration rate of N5 was lower than that of N4 by 0.10 μmol/(m2·s), with no significant difference; intercellular CO2 concentration of N4 was lower than that of the control by 56.85%, with significant difference; the conductivity was the highest in August, that of N4 was 28.22% lower than the control, with significant difference, while there was no significant difference between the N2 and the control; the MDA content of each fertilizer treatment was lower than that of the control, that of N4 was lower than control by 59.62% in August with significant difference. Therefore, N4 is the best treatment.

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