天津农业科学2024，Vol.30Issue(12)：10-17,8.DOI:10.3969/j.issn.1006-6500.2024.12.003
施氮量对藜麦养分吸收与分配的影响
Effect of Nitrogen Fertilization Rate on Nutrient Uptake and Distribution in Quinoa
摘要
Abstract
In order to clarify the effect of nitrogen application on quinoa's nutrient absorption and accumulation distribution patterns,field experiments under different nitrogen application conditions(0,80,160,240 kg·hm-2)had been set up.The nutrient absorption and distribution ratios for the root,stem,leaf,and panicle,as well as the yield,had been measured.The results showed that the nutri-ent absorption by the roots,stems,and leaves of quinoa had reached its maximum at the booting stage and then gradually decreased.The nitrogen and phosphorus absorption by the panicles had peaked at the booting stage,while potassium absorption reached its maxi-mum at the filling stage.The maximum nitrogen,phosphorus,and potassium absorption values of the roots were 29.09,9.27,115.96 g·kg-1,respectively.The maximum nitrogen,phosphorus,and potassium absorption values of the stems were 36.54,4.15,88.29 g·kg-1,respectively.The maximum nitrogen,phosphorus,and potassium absorption values of the leaves were 67.12,5.35,100.53 g·kg-1,re-spectively.The maximum nitrogen,phosphorus,and potassium absorption values of the ears were 50.21,7.58,75.68 g·kg-1,respec-tively.Nutrient accumulation was mainly distributed in the leaves and stems during the booting and flowering stages,and gradually moved to the panicles during the filling and maturation stages.At the maturity stage,the average nutrient accumulation distribution ra-tios in the panicles for nitrogen,phosphorus,and potassium were 71.33%,83.66%,55.29%,respectively.When the nitrogen applica-tion rate was 160 kg·hm-2,quinoa's growth and yield had shown the best performance.In conclusion,the optimal nitrogen application rate of 160 kg·hm-2 has been determined as the best for quinoa,as the maximum absorption of nitrogen,phosphorus,and potassium,the highest nutrient accumulation and distribution,and the greatest yield has been achieved.关键词
藜麦/氮肥/养分吸收/养分分配Key words
quinoa/nitrogenous fertilizer/nutrient absorption/nutrient allocation分类
农业科技引用本文复制引用
廖雨,胡雨彤,冯耀祖,俞天胜,张少民,贾宏涛..施氮量对藜麦养分吸收与分配的影响[J].天津农业科学,2024,30(12):10-17,8.基金项目
自治区重点研发计划项目(2022B02010) （2022B02010）
