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喷施钾钙硅制剂改善高温胁迫水稻叶片光合性能提高产量
引用本文:江晓东,华梦飞,杨沈斌,杨晓亚,郭建茂,姜琳琳.喷施钾钙硅制剂改善高温胁迫水稻叶片光合性能提高产量[J].农业工程学报,2019,35(5):126-133.
作者姓名:江晓东  华梦飞  杨沈斌  杨晓亚  郭建茂  姜琳琳
作者单位:南京信息工程大学江苏省农业气象重点实验室/气象灾害预报预警与评估协同创新中心,南京 210044,南京信息工程大学江苏省农业气象重点实验室/气象灾害预报预警与评估协同创新中心,南京 210044,南京信息工程大学江苏省农业气象重点实验室/气象灾害预报预警与评估协同创新中心,南京 210044,南京信息工程大学江苏省农业气象重点实验室/气象灾害预报预警与评估协同创新中心,南京 210044,南京信息工程大学江苏省农业气象重点实验室/气象灾害预报预警与评估协同创新中心,南京 210044,南京信息工程大学江苏省农业气象重点实验室/气象灾害预报预警与评估协同创新中心,南京 210044
基金项目:公益性行业(气象)科研专项(GYHY201506018);国家自然科学基金面上项目(41875140);江苏省科技项目(BE2015365)
摘    要:为探明喷施钾、钙和硅制剂对高温热害下水稻光合作用及产量的调控效应,以水稻品种陵两优268为研究对象,持续3 d对叶片分别喷施22.04 mmol/L KH2PO4溶液(T1)、20.0 mmol/L CaCl2溶液(T2)和2.5 mmol/L Na2Si O3·9H 2O溶液(T3),以喷施蒸馏水为对照(CK),测定了3种制剂预处理后对高温胁迫(日均气温35℃)下水稻剑叶光合、荧光参数和产量的影响,并用隶属函数法综合评价了钾、钙和硅制剂处理的水稻剑叶光合作用抗高温能力。结果表明:喷施钾、钙、硅制剂均能提高高温胁迫下水稻的产量,T1、T2和T3分别比CK增产42.67%、29.70%和20.01%(P0.05)。与CK相比,在高温胁迫处理第5 d和高温结束后的第5 d,喷施钾、钙、硅制剂皆可提高水稻剑叶光饱和点、最大净光合速率(Pmax)(P0.05)、光适应下光系统Ⅱ最大光化学效率(Fv?/Fm?)(P0.05)、光系统Ⅱ实际光化学效率(ΦPSⅡ)和光化学猝灭系数(qP),降低非光化学猝灭系数(non-photochemical quenching coefficient, NPQ)(P0.05),叶片光合活性高;钾、钙、硅制剂对提高水稻剑叶光合性能抗高温的能力大小依次为T1T2T3,以喷施22.04mmol/LKH2PO4溶液效果最好,喷施20.0 mmol/L CaCl2溶液次之。

关 键 词:作物  耐热性  试验  水稻  高温胁迫  钾钙硅制剂  光合作用  叶绿素荧光特性
收稿时间:2018/8/20 0:00:00
修稿时间:2019/2/18 0:00:00

Spraying exogenous potassium, calcium and silicon solutions improve photosynthetic performance of flag leaf and increase the yield of rice under heat stress condition
Jiang Xiaodong,Hua Mengfei,Yang Shenbin,Yang Xiaoy,Guo Jianmao and Jiang Linlin.Spraying exogenous potassium, calcium and silicon solutions improve photosynthetic performance of flag leaf and increase the yield of rice under heat stress condition[J].Transactions of the Chinese Society of Agricultural Engineering,2019,35(5):126-133.
Authors:Jiang Xiaodong  Hua Mengfei  Yang Shenbin  Yang Xiaoy  Guo Jianmao and Jiang Linlin
Institution:Jiangsu Key Laboratory of Agricultural Meteorology / Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, China,Jiangsu Key Laboratory of Agricultural Meteorology / Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, China,Jiangsu Key Laboratory of Agricultural Meteorology / Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, China,Jiangsu Key Laboratory of Agricultural Meteorology / Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, China,Jiangsu Key Laboratory of Agricultural Meteorology / Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, China and Jiangsu Key Laboratory of Agricultural Meteorology / Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing 210044, China
Abstract:
Keywords:crops  heat resistance  experiments  rice  heat stress  potassium  calcium  and silicon chemical solution  Photosynthesis  Chlorophyll fluorescence
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