生物刺激素对冬瓜幼苗生长的影响  

Effects of Biostimulants on the Growth of Wax Gourd Seedlings

作　　者：吴金怡 常静静 朱雪梅 李静 陈潇 宋钊[2] 陈雷 涂攀峰 张白鸽[2] WU Jinyi;CHANG Jingjing;ZHU Xuemei;LI Jing;CHEN Xiao;SONG Zhao;CHEN Lei;TU Panfeng;ZHANG Baige(College of Horticulture and Landscape Architecture,Zhongkai University of Agriculture and Engineering,Guangzhou 510225,China;Vegetable Research Institute,Guangdong Academy of Agricultural Sciences/Guangdong Key Laboratory of Vegetable New Technology,Guangzhou 510640,China)

机构地区：[1]仲恺农业工程学院园艺园林学院,广东广州510225 [2]广东省农业科学院蔬菜研究所/广东省蔬菜新技术研究重点实验室,广东广州510640

出　　处：《广东农业科学》2025年第1期49-59,共11页Guangdong Agricultural Sciences

基　　金：广东省乡村振兴战略专项种业振兴行动项目(2023-NJS-00-010);国家大宗蔬菜产业技术体系广州综合试验站项目(CARS-23-G50)。

摘　　要：【目的】筛选出有利于培育冬瓜壮苗的生物刺激素,并确定最适宜的使用浓度。【方法】以‘铁柱2号’黑皮冬瓜为试验材料,研究8种生物刺激素(海藻精、海藻肥、多肽、褐藻寡糖、黄腐酸、虾红素、虾青素和乳糖肽)对冬瓜幼苗质量的影响,通过测定不同生物刺激素种类及浓度处理下冬瓜幼苗的壮苗指数和根系活力,筛选出最适宜的生物刺激素浓度进行后续试验,再对不同生物刺激素处理下冬瓜幼苗根系形态、叶面积、叶绿素含量等生理指标进行主成分分析,对8种生物刺激素促进冬瓜幼苗生长的能力进行分析。【结果】适宜浓度的生物刺激素能显著提高冬瓜幼苗的生长质量,表现为株高、茎粗、根系生长和光合能力的提升。0.2 g/L褐藻寡糖为最佳处理,该处理冬瓜幼苗的茎粗、株高、根体积、叶绿素a含量、叶绿素b含量和叶面积分别比对照提高15.03%、43.42%、359.41%、121.62%、61.11%和58.30%。0.5g/L黄腐酸和0.5g/L乳糖肽处理表现次优,根系活力比对照提高185.16%和14.34%、叶面积增加50.04%和27.79%、叶绿素a+b总量提高54.05%和51.35%。主成分分析结果表明,各处理对冬瓜幼苗的促生效果表现为0.2g/L褐藻寡糖(得分0.97)>0.5g/L黄腐酸(0.64)>0.5g/L乳糖肽(0.62),显著优于对照(0.10)。【结论】适宜浓度的生物刺激素能显著提高冬瓜幼苗的壮苗指数和根系活力,其中褐藻寡糖在0.2g/L浓度下效果最佳,黄腐酸和乳糖肽在0.5g/L浓度下表现出良好的壮苗效果。【Objective】The study aims to identify biostimulants conducive to the cultivation of robust wax gourd seedlings and to determine the optimal concentration for their application.【Method】The black wax gourd‘Tiezhu 2’was used as experimental material,the effects of eight biostimulants(seaweed extract,seaweed fertilizer,polypeptide,alginate oligosaccharide,fulvic acid,canthaxanthin,astaxanthin and lactosyl peptide)on the quality of wax gourd seedlings were studied.By measuring the seedling strength index and root vitality of plants under different types and concentrations of biostimulants,the most suitable concentration of biostimulant was selected for subsequent experiments.The physiological indicators including root morphology,leaf area,and chlorophyll content of wax gourd seedlings under different biostimulant treatments were analyzed by principal component analysis,and the capacity of the 8 biostimulants in promoting the growth of wax gourd seedlings was ranked.【Result】Biostimulants with suitable concentrations could significantly improve the growth quality of wax gourd seedlings,as manifested by an increase in plant height,stem thickness,root system growth and photosynthetic capacity.Among them,the optimal treatment of 0.2 g/L alginate oligosaccharide significantly increased the stem thickness,plant height,root volume,chlorophyll a,chlorophyll b and leaf area of wax gourd seedlings by 15.03%,43.42%,359.41%,121.62%,61.11%,and 58.30% respectively compared with those of the control.In addition,the 0.5 g/L fulvic acid and 0.5 g/L lactosyl peptide treatments performed suboptimally,increasing root vitality by 185.16% and 14.34%,respectively,leaf area by 50.04% and 27.79%,respectively,and total chlorophyll a+b content by 54.05% and 51.35%,respectively.The results of the principal component analysis showed that the growth-promoting effects of different treatments on wax gourd seedlings ranked as:alginate oligosaccharide 0.2 g/L(score 0.97)>fulvic acid 0.5 g/L(0.64)>lactosyl peptide 0.5 g/L(0.62),which wer

关 键 词：生物刺激素 褐藻寡糖 黄腐酸 乳糖肽 冬瓜 育苗 壮苗指数 

分 类 号：S642.3[农业科学—蔬菜学]