水分胁迫条件下玉米产量影响因素灰色关联分析  

Grey Relational Analysis of Influencing Factors of Maize Yield under Water Redundancy Stress

作　　者：张莉[1] 李西灿[1] 程军伟 刘彭 李钧[1] ZHANG Li;LI Xi-can;CHENG Jun-wei;LIU Peng;LI Jun(College of information science and Engineering/Shandong Agricultural University,Tai’an 271018,China)

机构地区：[1]山东农业大学信息科学与工程学院,山东泰安271018

出　　处：《山东农业大学学报（自然科学版）》2022年第4期526-530,共5页Journal of Shandong Agricultural University：Natural Science Edition

基　　金：山东省自然科学基金项目(ZR2016DM03)。

摘　　要：为克服邓氏关联度不能反映负关联性及导致分析结果与客观实际不符的问题,采用改进的T型关联度模型分析水分胁迫条件下玉米产量的影响因素。首先,根据实验数据计算玉米产量及7个因素序列在渍水、淹水条件下相较正常水分条件下的变化值,形成差值序列并对其进行均值化处理;然后利用改进的T型关联度模型计算各因素差值序列与玉米产量差值序列的灰色关联度,并分析因素关联序的合理性。结果表明,各影响因素与玉米产量之间的灰色关联序为:雌雄间隔期>叶面积>整株干重>叶绿素含量>净光合速率>倒伏率>叶粒比。研究结果客观反映了各因素影响产量的生理机制,可以为采用农艺措施促进壮苗早发,协调雌雄穗同步发育,提升叶绿素含量和光合速率,增加干物质积累,降低倒伏率,促进玉米涝渍后生理和产量定向恢复和改善提供科学依据和技术支持。In order to overcome the disadvantages that the Deng's relational degree model can not reflect the negative correlation and the obtained result is inconsistent with the objective reality,this study uses the improved T-type relational degree model to analyze the influencing factors on the change of maize yield.Firstly,according to the experimental data,the change values of the maize yield and its 7 factors sequence under waterlogging and flooding condition compared with normal water condition are calculated to form the difference sequence,and its average value processing is carried.Then the grey relational degree between the difference sequence of each factor and the difference sequence of maize yield are calculated by using the improved T-type relational degree model,and the rationality of the relational order is analyzed.The results show that the grey relational order between the influencing factors and yield is as follows:male female interval>leaf area>whole plant dry weight>chlorophyll content>net photosynthetic rate>lodging rate>leaf grain ratio.The analysis results can objectively reflected the physiological mechanism of each influencing factor affecting yield,and it can provide scientific basis and technical support for using agronomic measures to promote early growth of strong seedlings,coordinate the synchronous development of male and female panicles,improve chlorophyll content and photosynthetic rate,increase dry matter accumulation and reduce lodging rate and promote the directional recovery and improvement of physiology and yield of maize after waterlogging.

关 键 词：玉米产量 水分胁迫 灰色关联分析 

分 类 号：N941.5[自然科学总论—系统科学] S513[农业科学—作物学]