|Table of Contents|

Effects of Nutrient Solution Based on Biogas Slurry on Diurnal Change of Chlorophyll Fluorescence Parameters of Strawberry in Medium Cultivation

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年13
Page:
33-41
Research Field:
Publishing date:

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Title:
Effects of Nutrient Solution Based on Biogas Slurry on Diurnal Change of Chlorophyll Fluorescence Parameters of Strawberry in Medium Cultivation
Author(s):
WANG Hongning1LIN Lu2TANG Yun2WANG Baoping2SHI Xiangyuan2SUN Junbao1
(1.Pomology Institute,Shanxi Academy of Agricultural Sciences,Taiyuan,Shanxi 030000;2.Research Center of Modern Agriculture,Shanxi Academy of Agricultural Sciences,Taiyuan,Shanxi 030000)
Keywords:
strawberrybiogas slurrychlorophyll fluorescence parameterdiurnal changeenvironmental factor
PACS:
-
DOI:
10.11937/bfyy.20193778
Abstract:
To determine the optimum mixed proportion of biogas slurry (BS) to Yama Zaki nutrient solution (NS) for strawberry (Fragaria ananassa Duch cv.Benihoppe) in medium cultivation,diurnal changes of chlorophyll fluorescence parameters and the relationships between parameters and environmental factors under different mixture treatments (BS∶NS=2∶3,1∶1 and 3∶2 in volume respectively) were measured and analyzed.The results showed that diurnal changes of actual photochemical efficiency of PSⅡ (ΦPSⅡ),capture efficiency of excitation energy (F′v/F′m) and coefficient of photochemical quenching (qP) decreased first and then increased with lowest value at 13:00.Relative electron transport rate (ETR) increased first and then decreased with peak at 13:00 in turning red during first-cut period (FTR).While in fully maturing during third-cut period (TFM),diurnal change of ETR was double-peak curves with the slightly higher 11:00 peak and the lower 15:00 peak.Daily mean value of ΦPSⅡ,F′v/F′m and qP were higher in FTR than in TFM,in contrast,that of ETR were not different significantly in the two periods.Influences of BS concentration on chlorophyll fluorescence parameters were observed in different treatments.ΦPSⅡ,F′v/F′m,qP and ETR were enhanced in mixture of 2∶3 (BS:NS),however,the opposite case happened in mixture of 3∶2 (BS∶NS).In contrast,only ETR value was appreciably increased in mixture of 1∶1 (BS∶NS) than in pure NS (CK) during TFM and other parameters were not different significantly.Therefore,taking plant growth and cost into account,1∶1 was the threshold value for optimum mixed proportion of BS to NS and can be applied in medium cultivation of strawberry.

References:

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Last Update: 2020-09-07