摘要
随着全球环境的逐渐变化和现代设施农业的发展,探究适合小麦生长的施肥模式越来越重要。以小麦品种“九麦2号”为研究对象,设置五种氮磷配施模式(N0P0,N45P45,N90P90,N135P135和N180P180)对盆栽土壤进行处理,分析“九麦2号”不同生育期叶片耐热性电导率和荧光拐点变化特征及不同处理间耐热性差异。结果表明:(1)三叶期时,“九麦2号”叶片在N90P90处理下,耐热性最强。返青期和拔节期时,以N135P135处理下,小麦叶片耐热性能最强。(2)三叶期时,不同处理间荧光拐点温度差异极显著(P<0.01),电导率拐点温度也达到极显著差异(P=0<0.01)。其中,荧光拐点温度在N90P90处理下最大临界值为68.00℃;电导率拐点温度在N135P135处理下最大临界值为60.71℃。(3)返青期时,不同处理间荧光拐点温度差异极显著(P<0.01),电导率拐点温度差异不显著。其中,荧光拐点温度在N135P135处理下最大临界值为46.95℃;电导率拐点温度在N90P90处理下最大临界值为61.76℃。(4)拔节期时,不同处理间荧光拐点温度差异极显著(P<0.01),电导率拐点温度差异不显著。其中,荧光拐点温度在N135P135处理下最大临界值为46.37℃;电导率拐点温度在N90P90处理下最大临界值为66.70℃。根据结果,显示N90P90和N135P135处理下,小麦的热生理特征表现最佳,为后续的中试试验提供理论依据。
With the gradual change of global environment and the development of modern facility agriculture,it is more and more important to explore the suitable fertilization mode of wheat growth.The wheat"Jiumai 2"was usded as the object,and five kinds of N and P fertilizer application(N0 P0,N45 P45,N90 P90,N135 P135 and N180 P180)were set up to analyze the leaf chlorophyll fluorescence and conductivity character change of the"Jiumai 2"under five different fertilizer treatments at different wheat growth stages.The results showed that:(1)At the three-leaf stage,the leaf of“Jiumai 2”was the most heat-resistant under N90 P90 treatment.At the turning-green stage and jointing stage,the heat resistance of wheat leaves was the strongest under the treatment of N135 P135.(2)At the three-leaf stage,the maximum curvature point temperature of the chlorophyll fluorescence curve among different treatments was extremely significantly different(P<0.01),and the maximum curvature point temperature of the conductivity curve among different treatments also had a very significant difference(P=0<0.01).Among them,the maximum curvature point temperature of the chlorophyll fluorescence curve under N90 P90 treatment was 68.00℃;the maximum curvature point temperature of the conductivity curve under N135 P135 treatment was 60.71℃.(3)At the turning-green stage,the maximum curvature point temperature of the chlorophyll fluorescence curve among different treatments was extremely significantly different(P<0.01),the difference of the maximum curvature point temperature of the conductivity curve was not significant.Among them,the maximum curvature point temperature of the chlorophyll fluorescence curve was 46.95℃under N135 P135 treatment,and the maximum curvature point temperature of the conductivity curve was 61.76℃under N90 P90 treatment.(4)At the jointing stage,the maximum curvature point temperature of the chlorophyll fluorescence curve under different treatments was extremely significant(P<0.01),and there was no significant difference in the maximum curvature point temperature of the conductivity curve.Among them,the maximum curvature point temperature of the chlorophyll fluorescence curve was 46.37℃under N135 P135 treatment,and the maximum curvature point temperature of the conductivity curve was 66.70℃under N90 P90 treatment.The results showed that the thermophysiological characteristics of wheat are the best under N90 P90 and N135 p135 treatment.This study provides a theoretical basis for the follow-up pilot test.
作者
张蓓蓓
张辉
屈魏蕾
田玉磊
井方宇
孙婷婷
ZHANG Beibei;ZHANG Hui;QU Weilei;TIAN Yulei;JING Fangyu;SUN Tingting(Key Laboratory of Disaster Survey and Mechanism Simulation of Shaanxi Province,School of Geography and Environment,Baoji University ofArts and Sciences,Baoji,Shaanxi 721013,China;School of Tourism and Planning of Pingdingshan University,Pingdingshan,Henan 467000,China)
出处
《陕西农业科学》
2022年第12期7-12,共6页
Shaanxi Journal of Agricultural Sciences
基金
陕西省教育厅重点科学研究计划项目(20JS011)
国家自然科学基金(41601016)
陕西省特支计划“青年拔尖人才”项目
陕西省科技厅面上基金(2015JM4136)
平顶山学院博士启动基金。
关键词
小麦
荧光
电导率
耐热性
Wheat
Fluorescence
Conductivity
Heat resistance
作者简介
第一作者:张蓓蓓(1983-),女,河南周口沈丘人,教授,博士,研究方向:植物生理生态学。
