中国农业科学院农业信息研究所 中国农学会
Agricultural Information Institute of CAAS China Association of Agricultural Science Societies
En
Ch
中国农业科学院农业信息研究所 中国农学会 主办

AI检索

订阅

返回顶部
当前位置: 首页 > 文章 > 氮素水平和形态对基质栽培桔梗生长及生理参数的影响 北方园艺 2013 (4) 162-165
Position: Home > Articles > Effects of Nitrogen Levels and Forms on the Growth and Physiological Parameters of Platycodon grandiflorum Northern Horticulture 2013 (4) 162-165

氮素水平和形态对基质栽培桔梗生长及生理参数的影响

作  者：
赵姣姣;刘文科;杨其长
单  位：
中国农业科学院农业环境与可持续发展研究所农业部设施农业节能与废弃物处理重点实验室
关键词：
桔梗;氮水平;氮形态;生物学性状;生理参数
摘  要：
以基质栽培的桔梗为试材,研究了营养液中硝态氮浓度依次为1.0、2.5、5.0和7.5mmol/L的氮素水平和不同浓度的硝态氮和铵态氮组合即N5(5.0mmol/L硝态氮)、N4+A1(4.0mmol/L硝态氮+1.0mmol/L铵态氮)、N2.5+A2.5(2.5mmol/L硝态氮+2.5mmol/L铵态氮)和N1+A4(1.0mmol/L硝态氮+4.0mmol/L铵态氮)对桔梗生长及其生理参数的影响,以期确定适宜桔梗设施无土栽培的氮素条件。结果表明:在不同浓度的氮水平下桔梗的根长、根鲜重、总生物量、地上部鲜重和根中的硝酸盐、抗氧化性差异不显著;N2.5的根粗和株高显著高于其它3个处理,但其根冠比最小;叶片中总叶绿素和类胡萝卜素含量随氮浓度的减少而降低。在不同氮形态条件下,桔梗的株高、根长、根粗、地上部鲜重、总生物量及叶片中的总叶绿素、类胡萝卜素和根中的硝酸盐、抗氧化性差异不显著;N1+A4处理下根鲜重和根冠比显著高于其它3个处理。可见,在硝态氮水平为2.5mmol/L,氮素组合为1.0mmol/L硝态氮+4.0mmol/L铵态氮时较适合桔梗设施无土栽培。
译  名：
Effects of Nitrogen Levels and Forms on the Growth and Physiological Parameters of Platycodon grandiflorum
作  者：
ZHAO Jiao-jiao,LIU Wen-ke,YANG Qi-chang(Institute of Environment and Sustainable Development in Agriculture,Chinese Academy of Agricultural Sciences,Key Lab of Energy Conservation and Waste Management of Agricultural Structures,Ministry of Agriculture,Beijing 100081)
关键词：
Platycodon grandiflorum;nitrogen level;nitrogen form;biological characters;physiological parameters
摘  要：
Taking Platycodon grandiflorum planted in soilless of vermiculite as material,the effect of different nitrogen levels and forms on the growth and physiological parameters of Platycodon grandiflorum were studied in order to find the suitable nitrogen levels and forms under facilities soilless cultivation.The nitrogen concentration in nutrient solution were 1.0,2.5,5.0 and 7.5 mmol/L,respectively.There were four kinds of different nitrogen form combinations,N5(5.0 mmol/L NO-3-N),N4+A1(4.0 mmol/L NO-3-N+1.0 mmol/L NH+4-N),N2.5+A2.5(2.5 mmol/L NO-3-N+2.5 mmol/L NH+4-N),N1+A4(1.0 mmol/L NO-3-N+4.0 mmol/L NH+4-N).The results showed that under different nitrogen levels,the differences of root length,fresh root weight,total biomass,shoot fresh weight and root nitrate,oxidation resistance were not significant.Under the nitrogen level of 2.5 mmol/L,root diameter and plant height were bigger than the other three,but the ratio of root to shoot was the smallest;the total chlorophyll and carotenoids of leaf decreased with the concentration of nitrogen.Under different nitrogen forms,the differences of shoot length,root length,root diameter,total biomass,shoot fresh weight and root nitrate,oxidation resistance were not significant.But the difference of fresh root weight and ratio of root to shoot were significant under the condition of N1+A4.In conclusion,under 2.5 mmol/L NO-3-N 1.0 mmol/L NO-3-N+4.0 mmol/L NH+4-N was more suitable for the roots growth of Platycodon grandiflorum.

相似文章

导出引用
计量
文章访问数: 8
HTML全文浏览量: 0
PDF下载量: 0

所属期刊

推荐期刊

友情链接Friendly link
农业信息研究所Agricultural information institute 农业智能知识服务平台Agricultural intelligent knowledge service platform 农业学术服务平台Agricultural Knowledge Service System 中国知网CNKI 维普网VIP 万方WANFANG DATA
联系我们Contact us

电话Tell：010-82109652-808

邮箱E-mail：agrijournal@caas.cn

服务Service
关于我们About us 意见建议Opinions and suggest
版权说明Copyright
单位：中国农业科学院农业信息研究所 中国农学会 © 2017中国农业科学院农业信息研究所 ICP备案号：京ICP备09089781号-46