JIANG Lili,WANG Ziquan,SHI Xueyan,et al.Effects of Different Nitrogen Application Rate on the Yield and Quality of Isatis indigotica Fort.[J].Northern Horticulture,2020,44(24):107-112.[doi:10.11937/bfyy.20200404]
不同施氮量对菘蓝产量及品质的影响
- Title:
- Effects of Different Nitrogen Application Rate on the Yield and Quality of Isatis indigotica Fort.
- Keywords:
- Isatls indigotlca Fort.; nitrogen application rate; yield; quality
- 文献标志码:
- A
- 摘要:
- 以菘蓝品种“定蓝1号”为试材，进行田间小区试验，设置0（N0）、75（N75）、150（N150）、225（N225）、300（N300）、375（N375）kg?hm-2 6个施氮量，研究施氮量对菘蓝生物产量、根中可溶性糖含量、游离氨基酸含量以及主要活性成分含量的响应。以期为深入研究菘蓝的栽培技术及品质提供参考依据。结果表明：随着施氮量的提高，“定蓝1号”叶鲜质量及干质量逐渐增加，根鲜质量、根干质量及根冠比则随施氮量的提高先增加后降低，均在N225处理下达到最高值；施氮量与“定蓝1号”板蓝根产量拟合二次函数相关性较高，当施氮量分别为220.35（2017年）、200.83（2018年） kg?hm-2时，“定蓝1号”板蓝根产量可达理论最高值。根中可溶性糖含量在N225处理下最高，游离氨基酸含量在N300处理下达到最高，二者均随着施氮量的提高呈先增加后减少的趋势。根中（R,S）-告依春含量在N0处理下最高，随着施氮量的提高逐渐下降。综上所述，施氮量为225 kg?hm-2时可以获得产量提高、活性成分稳定的药材。
- Abstract:
- Taking Isatis indigotica cultivar ‘Dinglan 1’ as test materials,designing 6 nitrogen levels (0 (N0)、75 (N75)、150 (N150)、225 (N225)、300 (N300)、375 (N375) kg?hm-2 respectively),and using field plot test,the response of the biomass accumulation,contents of soluble sugar,free amino acid,and main active components of Isatis indigotica under different nitrogen levels were investigated.The results showed that fresh and dry weights of leaves increased with the increasing of nitrogen application rate.The fresh and dry weights of root and root-shoot ratio increased initially and then decreased.The maximum value reached the highest when the nitrogen was 225 kg?hm-2.The fitting quadratic function had high correlation between nitrogen application rate and Isatis root yield.The yield of Isatis root reached theoretical maximum when the nitrogen application rate was 220.35 (2017) kg?hm-2 and 200.83 (2018) kg?hm-2 respectively.The soluble sugar and free amino acid content in roots increased initially and then decreased with the increase of nitrogen application rate.The soluble sugar content under N225 treatment was the highest while the free amino acid content under N300 treatment was the highest．The (R,S)-epigoitrin content was the highest under N0 treatment.The (R,S)-epigoitrin content decreased with the increasing of nitrogen application rate.In conclusion,when the nitrogen application rate was 225 kg?hm-2,the higher yield and better quality of Isatis indigotica could be obtained.
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备注/Memo
第一作者简介：姜丽丽（1982-），女，博士，助理研究员，现主要从事作物优质高效栽培等研究工作。E-mail:judy8225＠163.com.基金项目：国家重点研发计划资助项目（2018YFD020080706）；黑龙江八一农垦大学三横三纵支持计划资助项目（ZRCPY201801）。收稿日期：2020-02-05