摘要
通过小区试验研究了氮肥用量(0、45、90、135、180kg/hm2)对诸葛菜盛花期鲜草产量、养分含量和累积量、籽粒产量和氮肥利用率的影响。结果表明,施用氮肥可以显著提高诸葛菜的鲜草产量、养分累积量和籽粒产量,以施氮135kg/hm2时为最高,鲜草产量达到21 350 kg/hm2,氮、磷、钾累积量分别达到67.17、11.62和87.05kg/hm2,籽粒产量达到993kg/hm2;施氮可以提高诸葛菜鲜草和籽粒中的氮素含量。合理施氮能促进诸葛菜的生长,但氮肥农学利用率、偏生产力和表观利用率均会随着施氮量的增加而显著下降;过量施氮对诸葛菜的生长不利。
Plot experiments were carried out to study the effects of nitrogen （N） application rate on fresh yield, nutrient contents and accumulations, seed yield and N use efficiency of Orychophragmus violaceus. Results showed that compared to no N application, the fresh yield, nutrient accumulations and seed yield were increased significantly after N application. With 135 kg/hm^2 N application rate, fresh yield, N, P, K accumulations and seed yield were optimal, reaching 21350 kg/hm^2, 67.17 kg/hm^2, 11.62 kg/hm^2, 87.05 kg/hm^2 and 993 kg/hm^2 respectively. With increased N application rate,N agronomic efficiency （AUE）, partial factor productivity （ PFP） and apparent recovery efficiency （ ARE） of Orychophragmus violaceus decreased significantly. Excessive N had negative effects on growth of Orychophragmus violaceus.
出处
《中国油料作物学报》
CAS
CSCD
北大核心
2013年第2期185-189,共5页
Chinese Journal of Oil Crop Sciences
基金
公益性行业(农业)科研专项(200803029,201103005)
国家农作物种质资源平台运行服务项目
作物种质资源保护项目(NB2012-2130135-34)
关键词
诸葛菜
氮肥用量
产量
氮肥利用率
Orychophragmus violaceus
Napplication rate
Yield
N use efficiency
