| 不同浓度海藻肥对叶用莴苣抗逆性的影响 |
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| 引用本文： | 张美玲,刘 爽,王姗姗,崔 赛,葛振宇,王春男,田英豪,程东娟,王建霄.不同浓度海藻肥对叶用莴苣抗逆性的影响[J].蔬菜,2022(8):29-35. |
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| 作者姓名： | 张美玲 刘 爽 王姗姗 崔 赛 葛振宇 王春男 田英豪 程东娟 王建霄 |
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| 作者单位： | （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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| 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。 |
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| 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。
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| 关 键 词： | 关键词：海藻肥 叶用莴苣 生长 抗逆性 |
Effects of Different Concentrations of Seaweed Fertilizer on the Stress Resistance of Leaf Lettuce |
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| ZHANG Meiling,LIU Shuang,WANG Shanshan,CUI Sai,GE Zhenyu,WANG Chunnan,TIAN Yinghao,CHENG Dongjuan,WANG Jianxiao.Effects of Different Concentrations of Seaweed Fertilizer on the Stress Resistance of Leaf Lettuce[J].Vegetables,2022(8):29-35. |
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| Authors: | ZHANG Meiling LIU Shuang WANG Shanshan CUI Sai GE Zhenyu WANG Chunnan TIAN Yinghao CHENG Dongjuan WANG Jianxiao |
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| Institution: | (1. Hebei University of Engineering, Handan 056038, China; 2. Hebei Province Agricultural Biotechnology Innovation Center, Qinhuangdao 066004, China; 3. Key Laboratory of Plant Nutrition and Marine Function Fertilizer, Hebei Provincial Department of Agriculture and Rural Affairs, Qinhuangdao 066004, China; 4. Hebei Provincial Enterprise Technology Center, Qinhuangdao 066004, China; 5. Leading Bioagriculture Co., Ltd., Qinhuangdao 066004, China; 6. College of Resources and Environment, China Agricultural University, Beijing 100083, China) |
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| Abstract: | 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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| Keywords: | Keywords: seaweed fertilizer leaf lettuce growth stress resistance |
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