大麦与谷类科学2024，Vol.41Issue(1)：43-48,6.DOI:10.14069/j.cnki.32-1769/s.2024.01.007
叶面喷施黄腐酸钾对玉米幼苗光合特性的影响
Effect of Foliar Spraying of Potassium Fulvic Acid on Photosynthetic Characteristics of Maize Seedlings
摘要
Abstract
Photosynthesis is the basis for the formation of crop matter and yield.In order to clarify the effects of foliar spraying with different concentrations of potassium fulvic acid on the photosynthetic characteristics of maize seedlings,potassium fulvic acid solutions with concentrations of 500(H500),250(H250),100(H100),50(H50)and 0(CK)mg/L were prepared.The results showed that H100 treatment significantly increased the net photosynthesis(Pn),transpiration(T),stomatal conductance(Gs)and intercellular CO2 concentration(Ci)of maize seedlings leaves by 37.74％,81.04％,93.41％and 61.98％respectively compared to CK.Compared with CK,H100 significantly reduced leaf water use efficiency(WUE)and increased transpiration ratio(Tr),but not significantly compared with H50 and H250.H100 also reduced stomatal limitation(Ls)by 19.08％compared to CK.The treatments of H50,H100 and H250 increased the SPAD value.However,the differences were not significant compared to CK.In conclusion,the concentration of potassium fulvic acid at 100 mg/L was more conducive to promoting the growth and development of maize seedlings,as H100 treatment was beneficial to reducing Ls and significantly increasing Pn,T,Gs and Ci in the leaves of maize seedlings.关键词
玉米/黄腐酸钾/光合特性/SPAD值Key words
Maize/Potassium fulvic acid/Photosynthetic characteristics/SPAD value分类
农业科技引用本文复制引用
陈环宇,邢锦城,何苏南,汤康,董正中,卢明海,郁凯,刘冲,王凯,赵小慧..叶面喷施黄腐酸钾对玉米幼苗光合特性的影响[J].大麦与谷类科学,2024,41(1):43-48,6.基金项目
盐城市基础研究计划资助项目(YCBK2023024) （YCBK2023024）
江苏省双创博士项目(JSSCBS20221813) （JSSCBS20221813）
江苏省农业科技自主创新资金[CX(22)3145]. （22）
