摘要
为了探明鸭茅的高产栽培措施,采用田间试验研究了鸭茅不同生育期施氮量对其种子产量的影响。结果表明:分蘖期或孕穗期追施氮肥225kg/hm2可收获鸭茅种子694.5～723kg/hm2,增施氮肥对鸭茅种子成熟期株高的影响不明显,但生殖枝数、种粒数等则随施氮量的增加而增加,不同生育期不同施氮量的种子产量差异达极显著水平。
The effects of nitrogen fertilizer use on seed yield at different growth stages were studied by a field experiment to explore the high-yield cultivation measures of D.glomerata.The results showed that the seed yield of D.glomerata would be 694.5~723 kg/hm2 by dressing nitrogen fertilizer 225 kg/hm2 in tillering stage or booting stage.Increasing N had no significant effect on plant height in maturation phase.Nevertheless,the number of fertile stems and seeds increased with increasing N application rate.The difference of D.glomerata seed yields in various growth stages at different nitrogen use levels reached the very significant level.
出处
《贵州农业科学》
CAS
北大核心
2012年第11期90-92,共3页
Guizhou Agricultural Sciences
基金
贵州省科技计划项目"贵州鸭茅新品种选育及配套技术研发"[黔科合农G字(2009)4009]
贵州省优秀青年科技教育人才省长专项资金"贵州鸭茅种子生产关键技术研究"[黔省专合字(2009)58]
贵州省科技成果重点推广计划"牧草新品种黔草4号鸭茅种子生产及推广应用"[黔科合成字(2012)5038]
贵州省农业动植物育种专项"黔草4号鸭茅种子生产及配套栽培技术研究"[黔农育专字(2010)008]
贵州省农业科学院专项资金"黔草4号鸭茅良种扩繁及推广应用"[黔农科院院专项(2011)020]
关键词
不同施氮量
鸭茅
种子产量
Dactylis glomerata
various nitrogen application rate
seed yield
