[1]罗江宏,李杰,李娟,等.施氮水平和间断施氮对生菜生长和品质的影响[J].北方园艺,2022,(11):23-30.[doi:10.11937/bfyy.20214837]
　LUO Jianghong,LI Jie,LI Juan,et al.Effects of Nitrogen Application Level and Intermittent Nitrogen Application on Growth and Quality of Lettuce[J].Northern Horticulture,2022,(11):23-30.[doi:10.11937/bfyy.20214837]

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施氮水平和间断施氮对生菜生长和品质的影响

《北方园艺》[ISSN:1001-0009/CN:23-1247/S] 卷: 期数: 2022年11 页码: 23-30 栏目: 出版日期: 2022-06-15

Title:: Effects of Nitrogen Application Level and Intermittent Nitrogen Application on Growth and Quality of Lettuce

作者:: 罗江宏1; 李杰2; 李娟3; 胡海燕2; 冯致1; （1.甘肃农业大学园艺学院，甘肃兰州 730070;2.红河学院生物科学与农学学院，云南蒙自 661100；3.塔里木大学植物科学学院，新疆阿拉尔 843300）

Author(s):: LUO Jianghong1; LI Jie2; LI Juan3; HU Haiyan2; FENG Zhi1; (1.College of Horticulture,Gansu Agricultural University,Lanzhou,Gansu 730070；2.College of Biological and Agricultural Sciences,Honghe University,Mengzi,Yunnan 661100；3.College of Plant Science,Tarim University,Arael,Xinjiang 843300)

关键词:: 生菜; 施氮水平; 频率; 硝酸盐; 营养品质

Keywords:: lettuce; nitrogen application level; frequency; nitrate; nutritional quality

DOI:: 10.11937/bfyy.20214837

文献标志码:: A

摘要:: 以“意大利全年耐抽薹（208）”生菜为试材，采用水培法，设置3个施氮水平N4（4 mmol?L-1）、N8（8 mmol?L-1）、N12（12 mmol?L-1）和4个间断施氮频率F0（0 d）、F3（3 d）、F6（6 d），F9（9 d），研究不同施氮水平和间断施氮频率对生菜采收期生长状况、类黄酮、总酚、花青素和抗坏血酸含量以及对硝酸盐、亚硝酸盐含量的影响，以期为生菜水培栽培时营养品质提升提供参考依据。结果表明：持续性施氮（F0）能够提高生菜的株高和地上部鲜质量，N8水平下，随着施氮间断频率的增加，生菜地上部的鲜质量越来越低；在施氮水平为8 mmol?L-1，间断施氮频率6 d时，抗坏血酸含量和亚硝酸还原酶含量最高，比最低的N12F9高83.68%，亚硝酸还原酶含量比最低的N12F3高60.79%，硝酸盐含量则是最低。因此，施氮水平为8 mmol?L-1，间断施氮频率6 d能保证植株生长的同时提高抗坏血酸含量，并且降低硝酸盐的积累。

Abstract:: Taking ‘Italian Resistant-bolting tolerance (208)(Lactuca sativa L.)’ lettuce as test material,hydroponics was used as treatment,three nitrogen application levels N4 (4 mmol?L-1),N8 (8 mmol?L-1),N12 (12 mmol?L-1) and four intermittent nitrogen application frequencies F0 (0 day),F3 (3 days),F6 (6 days),F9 (9 days) were set,the effect of different nitrogen application levels and intermittent nitrogen application frequency on the growth status,flavonoids,total phenols,anthocyanins and ascorbic acid contents,nitrate and nitrite contents of lettuce during harvesting period were studied,in order to provide reference for improving the nutritional quality of lettuce in hydroponics.The results showed that continuous nitrogen application (F0) could improve the plant height and aboveground fresh weight of lettuce.Under the N8 level,aboveground fresh weight of lettuce became lower and lower with the increase of nitrogen application interruption frequency.8 mmol?L-1,when the frequency of intermittent nitrogen application was 6 days,the content of ascorbic acid and nitrite reductase was the highest,which was 83.68% higher than that of the lowest N12F9,and the content of nitrite reductase was 60.79% higher than that of the lowest N12F3.Nitrate content was the lowest.Therefore,the nitrogen application level of 8 mmol?L-1 and the intermittent nitrogen application frequency of 6 days could ensure the growth of plants,increase the content of ascorbic acid,and reduce the accumulation of nitrate at the same time.

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备注/Memo

第一作者简介：罗江宏（1996-），男，硕士研究生，研究方向为设施蔬菜栽培生理与生长调控。E-mail：ynluojh@163.com.责任作者：冯致（1964-），男，本科，副研究员，硕士生导师，现主要从事蔬菜栽培生理等研究工作。E-mail：Fengz@gsau.edu.cn.基金项目：云南省应用型基础研究资助项目（2018FD087）；红河学院科研基金博硕资助项目（XJ17B07，XJ17B08）。收稿日期：2021-11-08

更新日期/Last Update: 2022-07-06