摘要
在大田条件下以小麦品种鲁原502为材料,通过设置0、75、150、225、300 kg/hm^2五个施氮水平,研究氮素对其干物质积累、转运及产量的影响。结果表明,在一定范围内增施氮肥,鲁原502各生育时期的干物质积累量增加,花前贮存物质转运量及对籽粒产量的贡献率提高,单位面积穗数和穗粒数增加,进而提高产量,过量施氮则产量下降;小麦千粒重受氮素影响变化不大。综上所述,本试验大田条件下鲁原502的最佳施氮量为225 kg/hm^2。
Using wheat variety Luyuan 502 as the material,five nitrogen levels including 0,75,150,225 and 300 kg/hm 2 were setted to investigate the effect of nitrogen rate on dry matter accumulation,translocation and yield.The results showed that adding nitrogen fertilizer in the right amount was contribute to the accumulation of dry matter,increased the translocation amount of storage substance before flowering and contribution rate to grain yield,improved the number of panicles per unit area and grain number per panicle and eventually increased production.Excessive nitrogen fertilization resulted in decreased production.The effect of nitrogen rate on wheat 1 000-grain weight was not significant.Under the field conditions in this experiment,the optimal nitrogen application amount of Luyuan 502 was 225 kg/hm 2.
作者
安霞
张海军
蒋方山
吕连杰
陈军
巩素霞
韩明明
An Xia;Zhang Haijun;Jiang Fangshan;Lü Lianjie;Chen Jun;Gong Suxia;Han Mingming(Zibo Academy of Agricultural Sciences,Zibo 255000,China)
出处
《山东农业科学》
2018年第7期112-115,共4页
Shandong Agricultural Sciences
基金
国家重点研发计划项目(2017YFD0100602)
山东省现代农业产业技术体系小麦创新团队项目(SDAIT-01-16)
淄博市科学技术发展计划项目(2017kj010083)
关键词
小麦
鲁原502
施氮量
干物质积累
转运
产量
Luyuan 502
Nitrogen application amount
Dry matter accumulation
Translocation
Yield