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不同浓度海藻肥对叶用莴苣抗逆性的影响

Effects of Different Concentrations of Seaweed Fertilizer on the Stress Resistance of Leaf Lettuce

DOI：

中文关键词: 关键词：海藻肥叶用莴苣生长抗逆性

英文关键词:Keywords: seaweed fertilizer leaf lettuce growth stress resistance

基金项目:基金项目：(203)技术转移中心/2021年支持地方高校改革发展追加资金-氢能技术与应用研究平台（学科部分）（SJ210004122）；海洋经济创新发展示范城市建设项目。

作者

单位

张美玲1 ，刘　爽1 ，王姗姗1 ，崔赛1 ，葛振宇2,3,4,5，王春男2,3,4,5，田英豪6 ，程东娟1 ，王建霄1*

（1. 河北工程大学，河北邯郸 056038；2.河北省农业生物技术创新中心，河北秦皇岛 066004；3.河北省农业农村厅植物营养与海洋功能肥料重点实验室，河北秦皇岛 066004；4.河北省企业技术中心，河北秦皇岛 066004；5.领先生物农业股份有限公司，河北秦皇岛 066004；6.中国农业大学资源与环境学院，北京 100083）

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中文摘要:

摘要：为研究不同浓度海藻肥对叶用莴苣抗逆性的影响，以“绿珊”品种为研究对象，设置7个海藻肥浓度梯度（0.00、1.00、1.25、1.50、2.00、2.50、3.00 g/L），其中以不施海藻肥为对照，比较不同处理叶用莴苣定植后10、20、30 d的生物量及收获后抗氧化系统（SOD活性、维生素C含量）、渗透调节物质（脯氨酸、可溶性糖含量）、丙二醛（MDA）和叶绿素含量的变化。结果表明：不同浓度海藻肥可以显著提高叶用莴苣的生物量、植株抗氧化系统活性，增加渗透调节物质和叶绿素含量，降低MDA含量。当海藻肥浓度为1.50 g/L时，地上部干质量在定植10、20、30 d后分别比CK增加29.18%、22.02%、22.02%，差异均达显著水平；当海藻肥浓度为2.0 g/L时，在定植10、20、30 d后SOD含量分别较CK增加18.49%、 36.96%、52.69%，维生素C含量分别较CK增加28.27%、46.55%、40.22%，脯氨酸含量分别较CK增加 48.58%、56.25%、47.62%，可溶性糖含量分别较CK增加32.06%、50.64%、34.30%，MDA含量分别较CK 降低18.18%、43.32%、74.6%，差异均达极显著水平。

英文摘要:

Abstract: In order to study the effects of different concentrations of seaweed fertilizer on the stress resistance of leaf lettuce, 'Lüshan' was taken as the research object, and seven concentrations (0.00, 1.00,1.25, 1.50, 2.00, 2.50, 3.00 g/L) of fertilizer gradient were set. The control group was not irrigated with seaweed fertilizer, the biomass and antioxidant system (SOD, ascorbic acid content), osmotic regulation substances (proline, soluble sugar content), malondialdehyde (MDA) and chlorophyll contents of leaf lettuce with different treatments were compared at 10, 20, 30 days after transplanting. The results showed that different concentrations of seaweed fertilizer could significantly increase the biomass and antioxidant system activity of leaf lettuce, increase the content of osmotic regulation substances and chlorophyll, and decrease the content of MDA. When the concentration of seaweed fertilizer was 1.50 g/L, the dry weight aboveground increased by 29.18%, 22.02% and 22.02% compared with CK after planting 10, 20, 30 days, respectively, and the differences were significant. When the concentration of seaweed fertilizer was 2.0 g/L, compared with CK after transplanting 10, 20, 30 days, the content of SOD increased by 18.49%, 36.96%, 52.69%, the content of vitamin C increased by 28.27%, 46.55%, 40.22%, the content of proline increased by 48.58%, 56.25%, 47.62%, the content of soluble sugars increased by 32.06%, 50.64% and 34.30%, and the content of MDA reduced by 18.18%, 43.32% and 74.6%, all with extremely significant differences respectively.

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