黄淮海区域30个夏玉米品种干物质积累和氮素转运特性  

Characteristics of Dry Matter Accumulation and Nitrogen Use Efficiency of 30 Summer Maize Hybrids with Cluster Analysis Grouped in Huang-Huai-Hai Region

作　　者：张慧[1] 赵红香 温立玉 王庆成 刘开昌[1] 赵海军 李宗新[1] 

机构地区：[1]山东省农业科学院玉米研究所,济南250100 [2]小麦玉米国家工程实验室,济南250100

出　　处：《玉米科学》2016年第3期78-84,共7页Journal of Maize Sciences

基　　金：公益性行业(农业)科研专项经费项目(201203079;201303013);国家科技支撑计划课题(2013BAD07B06);山东省现代农业产业技术体系玉米创新团队项目(SDAIT-01-022-08)

摘　　要：采用盆栽试验,依据单株产量、氮素吸收效率、氮素子粒生产效率和氮肥偏生产力对该区30个夏玉米品种进行聚类分析,将供试品种分为4种类型,高产氮高效型(Ⅰ)、高产氮中效型(Ⅱ)、中产氮中效型(Ⅲ)和低产氮低效型(Ⅳ)。经进一步相关分析和通径分析发现,单株产量、氮素吸收效率、氮素子粒生产效率和氮肥偏生产力间显著相关。开花期后,高产氮高效型(Ⅰ)夏玉米品种的氮素和干物质向子粒分配比例较高,氮转移量、转移效率、贡献率最高;低产氮低效型(Ⅳ)夏玉米品种向根、茎的分配比例较高,氮转移量、转移效率及贡献率最低。A pot experiment was conducted, and by the yield per plant, nitrogen grain production efficiency（NG-PE）, nitrogen uptake efficiency（NAE） and partial factor productivity of applied nitrogen（PFPN）, thirty summer maizehybrids were clustering analyzed and be divided into 4 types, the type Ⅰ was high yield and high efficiency, thetype Ⅱ was high yield and moderate efficiency, the type Ⅲ was moderate yield and moderate efficiency, the type Ⅳwas low yield and low efficiency. By the further correlation analysis and path analysis, significantly correlation be-tween yield per plant, NGPE, NAE and PFPN. The NUE and DM were not different in silking stage, but were re-markably different in maturity stage, the type Ⅰ was the highest in the DM, nitrogen distributions to grain, nitrogentransportation amount（NTA）, nitrogen transportation efficiency（NTE） and nitrogen contribution rate（NCR） than other 3 types. The type Ⅳ was the highest in the DM and nitrogen distributions to roots and stalks, but the lowest in nitro-gen transportation amount（NTA）, nitrogen transportation efficiency（NTE） and nitrogen contribution rate（NCR） thanother 3 types.

关 键 词：夏玉米 氮素吸收效率 氮素子粒生产效率 干物质积累量 

分 类 号：S513.01[农业科学—作物学]