缺铁条件下磷素水平对不同磷效率大豆农艺性状的影响  

Effects of Phosphate Levels on Agronomic Traits of Soybean Genotypes with Different Phosphate Efficiency Under Fe Deficiency

作　　者：张鸣浩[1] 衣志刚[1] 孟凡钢[1] 于德彬 赵婧[1] 闫晓艳[1] 张伟[1] 邱强[1] ZHANG Ming-hao;YI Zhi-gang;MENG Fan-gang;YU De-bin;ZHAO Jing;YAN Xiao-yan;ZHANG Wei;QIU Qiang(Soybean Research Institute,Jilin Academy of Agriculural Sciences/National Enginering Research Center of Soybean,Changchun 130033.China)

机构地区：[1]吉林省农业科学院大豆研究所/大豆国家工程研究中心,吉林长春130033

出　　处：《大豆科学》2021年第2期249-256,共8页Soybean Science

基　　金：国家自然科学基金(31601245);现代农业产业技术体系建设专项(CARS-04-PS12)。

摘　　要：为给缺铁地区磷肥的合理施用提供理论依据,以磷高效和磷低效基因型大豆为材料,采用砂培方式研究不同磷/铁处理对不同磷效率大豆生物学性状的影响,分析农艺性状与大豆植株磷、铁性状的关系,以及磷、铁性状对单株粒重的影响,并利用因子得分综合评价磷高效和磷低效基因型对不同磷/铁处理的响应。结果表明:磷高效基因型大豆在R5期的株高、茎粗、单株叶面积、叶片干重、茎干重、荚干重、地上部干重和根系干重的最高值均出现在磷/铁为300∶30处理下。典型相关分析表明,磷高效基因型大豆R5期的地上部干重与R8期籽粒铁/磷浓度比呈正相关关系;磷低效基因型大豆R5期的地上部干重与R3期叶片磷浓度呈正相关关系。磷高效和磷低效基因型的单株粒重均与R8期籽粒铁浓度有关,但R8期籽粒铁浓度对两种基因型的作用相反,表明R8期籽粒铁浓度是影响低铁条件下不同品种单株粒重差异的重要指标。利用因子得分综合评价发现,磷/铁为1~10时,随着磷/铁比值的增大,磷高效基因型大豆的ACE值随之升高,而磷低效基因型大豆的ACE值随之下降。综上,缺铁胁迫下,磷高效基因型大豆在磷/铁为300∶30处理下的综合表现最好,磷低效基因型大豆在磷/铁为30∶30处理下的综合表现最好。In order to provide a theoretical basis for the rational application of phosphate fertilizer under Fe deficiency areas, in this study, the effects of different P∶Fe ratios on biological traits of soybean and genotypic differences were analyzed by sand culture and split blot design, with P-efficient and P-inefficient soybean genotypes as the experimental materials, further explored the relationship between agronomic traits and P/Fe traits in soybean, as well as effect of these traits on seed weight per plant, and their genotypic differences, and comprehensively evaluated the response of P-efficient and P-inefficient soybean genotypes to different P∶Fe treatments by factor scores. The results showed that, at R5 stage, the highest values of plant height, stem diameter, leaf area, leaf dry weight, stem dry weight, pods dry weight, shoot dry weight and root dry weight per plant of P-efficient genotypes reached their peak under P∶Fe ratio of 300∶30. Canonical correlation analysis showed that shoot dry weight at R5 stage of P-efficient genotypes was positively correlated with concentration ratio of Fe∶P in seed at R8 stage, while shoot dry weight of P-inefficient genotypes was positively correlated with P concentration in leaves at R3 stage. The seed weight per plant of both P-efficient genotypes and P-inefficient genotypes were correlated with Fe concentration in seed at R8 stage. But the effects of Fe concentration in seed at R8 stage on seed weights per plant of the two genotypes were opposite, this indicated that Fe concentration in seed at R8 stage was an important indicator for genotypic difference of seed weight per plant under low Fe condition. Comprehensive evaluation by factor score showed that when the P∶Fe ratio ranged from 1 to 10, the ACE value of P-efficient soybean genotypes increased with the increase of P∶Fe ratio, while the ACE value of P-inefficient soybean genotypes decreased with the increase of P∶Fe ratio. In conclusion, under iron deficiency stress, P-efficient soybean genotypes h

关 键 词：磷高效 磷低效 农艺性状 磷浓度 铁浓度 

分 类 号：S565.1[农业科学—作物学]