安徽农学通报2026，Vol.32Issue(1)：9-15,7.DOI:10.16377/j.cnki.issn1007-7731.2026.01.003
氮磷配施对夏玉米干物质积累、根系构型与养分吸收性能的影响
Effects of combined nitrogen and phosphorus application on dry matter accumulation,root architecture and nutrient uptake capacity of summer maize
摘要
Abstract
To explore the effects of different nitrogen(N)and phosphorus(P)combined application rates on dry matter accumulation,grain yield,root development,and nutrient uptake and utilization of maize,a pot experiment was conducted using Denghai 605 as the test cultivar with a split-plot design.4 nitrogen application levels were set:0(N0),225 kg/hm2(N1),300 kg/hm2(N2),and 375 kg/hm2(N3);4 phosphorus application levels were established:0(P0),60 kg/hm2(P1),90 kg/hm2(P2),and 120 kg/hm2(P3),resulting in a total of 16 treatments.Key indicators including aboveground dry matter accumulation,grain yield,root morphological traits,and nutrient uptake and utilization efficiency were measured for each treatment.The results showed that under the same nitrogen(or phosphorus)application level,the aboveground dry matter accumulation and grain yield of summer maize showed an increasing trend with the increase in phosphorus(or nitrogen)application rate.The N3P3 treatment achieved the highest aboveground dry matter accumulation and grain yield,with the aboveground dry matter accumulation reaching 84.01 g/plant at the flowering stage and 313.31 g/plant at the full maturity stage,and the grain yield being 190.74 g/plant.The root length,root surface area,root volume,and root dry weight of summer maize also exhibited an increasing trend,with the N3P3 treatment performing optimally.At the full-ripening stage,under the same nitrogen application level,the root-shoot ratio increased slightly with the increase of phosphorus application rate:under the same phosphorus application level,the root-shoot ratio decreased slightly with the increase of nitrogen application rate.Under the same nitrogen(phosphorus)application level,the nitrogen(phosphorus)uptake efficiency and nitrogen(phosphorus)partial factor productivity of summer maize showed a gradual increasing trend with the increase of phosphorus(nitrogen)application rate.Overall,reasonable combined application of nitrogen and phosphorus can promote root development,enhance nutrient uptake and utilization efficiency,and thereby increase the dry matter accumulation and yield of summer maize.Under the experimental conditions,the N3P3 treatment yielded the best results.关键词
夏玉米/氮磷配施/根系构型/养分吸收/产量Key words
summer maize/combined nitrogen and phosphorus application/root system configuration/nutrient absorption/yield分类
农业科技引用本文复制引用
梁明磊,陈晓影,任昊,刘鹏..氮磷配施对夏玉米干物质积累、根系构型与养分吸收性能的影响[J].安徽农学通报,2026,32(1):9-15,7.基金项目
国家自然科学基金(31371576,31401339) （31371576,31401339）
国家重点研发计划项目(2016YFD0300106). （2016YFD0300106）
