中国农学通报2025，Vol.41Issue(13)：26-31,6.
配比施肥对山核桃幼树叶绿素荧光特性及光合生理的影响
Effects of Proportional Fertilization on Chlorophyll Fluorescence Characteristics and Photosynthetic Physiology of Carya cathayensis Seedling
摘要
Abstract
This study investigated the effects of proportional fertilization on chlorophyll fluorescence characteristics and photosynthetic physiology in Carya cathayensis seedlings to provide technical guidance for fertilization management during seedlings cultivation.Using an L9(34)orthogonal experiment design with non-fertilization as control,three fertilization factors(N,P,K)were applied on May 12,2023.Chlorophyll fluorescence parameters and photosynthetic physiological indices were measured on August 17,followed by comprehensive evaluation of different treatments.Fertilization significantly increased the chlorophyll(a+b)content and net photosynthetic rate(Pn).The T3 treatment(urea 32.61 g/plant,calcium superphosphate 333.33 g/plant,potassium chloride 129.04 g/plant)achieved the highest Pn[16.59 μmol/(m2·s)].The T4 treatment(urea 65.22 g/plant,calcium superphosphate 83.33 g/plant,potassium chloride 64.52 g/plant)showed the highest transpiration rate[Tr=7.49 mmol/(m2·s)],significantly exceeding the control.All fertilization formulas significantly improved photochemical efficiency[Y(Ⅱ)],photochemical quenching(qP),non-photochemical quenching(NPQ),and maximum quantum yield(Fv/Fm).The T1 treatment(urea 32.61 g/plant,calcium superphosphate 83.33 g/plant,potassium chloride 64.52 g/plant)yielded the highest Y(Ⅱ)(0.53),and CK,T7 treatment was the lowest(0.49).T5(urea 65.22 g/plant,calcium superphosphate 166.66 g/plant,potassium chloride 129.04 g/plant)achieved peak qP(0.79).The T8 treatment showed maximum NPQ(0.99),and T3 attained the highest Fv/Fm(0.81).Strong positive correlations were observed between Pn and both Tr(P<0.01)and Y(Ⅱ)(P<0.01).Based on membership function analysis,T3 demonstrated optimal fertilization effects,exerting the greatest influence on photosynthetic characteristics.关键词
山核桃/幼树/配比施肥/光合生理/荧光特性/综合评价Key words
Carya cathayensis/seedlings/proportional fertilization/chlorophyll fluorescence/physiology/comprehensive evaluation分类
农业科技引用本文复制引用
季琳琳,孙维敏,陈素传,王斐,付逍遥,崔灿,吴志辉,张俊佩..配比施肥对山核桃幼树叶绿素荧光特性及光合生理的影响[J].中国农学通报,2025,41(13):26-31,6.基金项目
安徽省重点研究与开发计划项目"山核桃良种繁育及关键栽培技术创新与应用"(202204c06020001) （202204c06020001）
"十四五"国家重点研发计划课题"核桃、油橄榄和文冠果优质高产新品种创制与精准栽技术"(2022YFD2200402). （2022YFD2200402）
