中国油料作物学报2024，Vol.46Issue(2)：370-376,7.DOI:10.19802/j.issn.1007-9084.2022287
不同株型小花生品种氮素养分吸收利用特性
Nitrogen uptake and utilization of small-seed peanut cultivars with different plant architecture
摘要
Abstract
In the production of small-seed peanut cultivars in South China,landraces with high plants and bred cultivars with dwarf plants were both planted.Thus a differential fertilization strategy had to be figured out ac-cording to their nitrogen requirements.In this study,the main landrace with high plants Anhua Xiaozi and improved dwarf cultivar Xianghei Xiaoguo were used as materials.Four compound fertilization rates were set including 0,450,600,and 750 kg/hm2,representing soil background(CK),low(F30),medium(F40),and high(F50)fertiliz-er levels.Nitrogen content,accumulation,and distribution were recorded at 4 growth stages.Results showed that,in high landrace Anhua Xiaozi,N content were in the order of pod>leaf>root>stem,while those of dwarf cultivar Xianghei Xiaoguo were in leaf>pod>root>stem.N content in leaves and roots of Anhua Xiaozi was less than dwarf cultivar Xianghei Xiaoguo.The opposite trend was found in stems and pods.The influence degree of increasing fer-tilizer on N content was in the order of stem>leaf>root>pod,which was beneficial to N assimilation and absorption in vegetative organs.N accumulation in different organs of the 2 materials was leaf>pod>stem>root.Except the seedling stage,N accumulations of the whole plant,leaf and stem in other stages were larger in Anhua Xiaozi stem.N accumulations were both higher in Anhua Xiaozi pods and roots,but only in roots during seedling and podding stages.Fertilization was beneficial to N accumulation in early stages.N distribution rate of both varieties was the highest in leaves,and then in pods and stems.N distribution rate in higher variety were larger in aboveground parts,while the underground parts was the opposite.It indicated that N absorbed by dwarf variety was more conducive to transport to pods.N production efficiency was higher in dwarf Xianghei Xiaoguo.N production efficiency and N par-tial factor productivity of F40 and F30 treatments were both high,indicated that excessive fertilization decreased N use efficiency.In conclusion,lower response of N accumulation to fertilizer increase was found in dwarf cultivar Xianghei Xiaoguo,with less total accumulation but more distribution in pods.Therefore,in barren and acidic red soil regions in South China,peanut plant architecture should be considered during fertilizer determination.关键词
花生/当地品种/矮秆品种/株型/施肥量/氮素/需肥特性Key words
peanut/landrace/dwarf cultivar/plant architecture/fertilization rate/nitrogen/nutrient re-quests分类
农业科技引用本文复制引用
董露琳,刘登望,傅惠林,唐康,刘娜,杨龙兴,曾宁波,罗梓楠,张昊,李林..不同株型小花生品种氮素养分吸收利用特性[J].中国油料作物学报,2024,46(2):370-376,7.基金项目
国家重点研发计划(2018YFD1000900) （2018YFD1000900）
国家现代农业产业技术体系(CARS-13) （CARS-13）
湖南省现代农业产业技术体系 （）
湖南省重点研发计划(2021NK2005) （2021NK2005）
湖南省教育厅科学研究项目(21B0181) （21B0181）
