植物营养与肥料学报2017，Vol.23Issue(2)：408-415,8.DOI:10.11674/zwyf.16120
施用炭基缓释肥对花生光合功能的影响
Effects of biochar-based slow-release fertilizer on photosynthetic characters of peanut functional leaves
摘要
Abstract
[Objectives] This study aimed to study effects of different dosages of biological carbon and carbon based slow release fertilizers on fluorescence dynamics of functional leaves of peanut at the key growth stages in a field location experiment,investigate variation of the blade light system under different conditions,and provide a theoretical basis for the development of new fertilizer production.[Methods] The location experiment started in 2011.There were 5 treatments,no fertilization (CK),single apply biological carbon (C15 and C50),combined application of N,P and K (NPK),and biochar-based slow-release fertilizer(TJHS).The C15 and TJHS had equivalent carbon content,and the NPK and TJHS had equal nitrogen,phosphorus and potassium nutrients.In 2013 the peanut leaves were collected at the function period of flowering,fluorescence kinetics curves,performance of optical system Ⅰ and optical system Ⅱ were measured using an MPEA-2 type plant efficiency instrument.[Results] The results showed that the application of the biochar-based slow-release fertilizer can reduce the K,J and I points of OJIP fluorescence induction curves.The probability of a trapped exciton move from the electron transport chain beyond QA (Ψo) to the QB under the biochar-based slow-release fertilizer was significantly higher than that under the same level of carbon input,and the Ψo was increased by 6.56％,which equaled to the same level of nutrient treatment effect.The performance index of absorption basis (PIABS) under the biochar-based slow-release fertilizer was also significantly higher than those under the same level of carbon input or the same level of nutrient treatment effect,and the PIABs values were increased by 12.27％ and 17.62％,respectively.The leaf chlorophyll variable fluorescence Fj accounted for Fo-Fp amplitude ratio (Vj) under the biochar-based slow-release fertilizer was better than those of the same level of carbon input or the same level of nutrient treatment effect,and the Vj values were decreased by 10.26％ and 5.41％,respectively.The leaf chlorophyll variable fluorescence Fk accounted for Fo-Fp amplitude ratio (Wk) under the biochar-based slow-release fertilizer was same as those of the same level of carbon input or the same level of nutrient treatment effect.Under the biochar-based slow-release fertilizer the index of leaf photosynthesis system had obvious influence,the relative absorption value of 820nm in peanut leaves was "V" type,and △It value change was relatively stable,in a gradual upward trend.The maximum redox activity of PS Ⅰ under the biochar-based slow-release fertilizer was higher than the same level of nutrient treatment effect,and △I/Io was increased by 4.30％.[Conclusions] Application of biochar-based slow-release fertilizer could cause significant changes in the fluorescence induction curve of peanut leaves in vegetative growth stage,and improve the photosynthetic performance of leaves,especially in the electron transfer and energy absorption,which was better than those of biological carbon or combined application of nitrogen,phosphorus and potassium fertilizer.关键词
炭基缓释肥/光合系统/叶绿素荧光/820nm吸光值Key words
biochar-based slow-release fertilizer/photosynthetic system/chlorophyll fluorescence/820 nm absorbance引用本文复制引用
杨劲峰,鲁豫,刘小华,王月,李娜,黄玉茜,韩晓日..施用炭基缓释肥对花生光合功能的影响[J].植物营养与肥料学报,2017,23(2):408-415,8.基金项目
国家现代农业产业技术体系建设专项资金(CARS-14) （CARS-14）
公益性行业“棕壤农田土壤肥力特征及综合培肥技术与示范”(201203030-04-03)资助. （201203030-04-03）
