壳聚糖对草莓种苗繁育、光合特性及氮代谢的影响  

Effects of chitosan on seedling propagation,photosynthetic characteristics and nitrogen metabolism of strawberry

作　　者：康凯伦 张彦萍[1] 刘海河[1] 朱立保 赵菁婉 曹艳霞 祁泽阳 KANG Kailun;ZHANG Yanping;LIU Haihe;ZHU Libao;ZHAO Jingwan;Cao Yanxia;Qi zeyang(College of Horticulture,Hebei Agricultural University,Baoding 071001,China)

机构地区：[1]河北农业大学园艺学院,河北保定071001

出　　处：《河北农业大学学报》2025年第1期53-58,共6页Journal of Hebei Agricultural University

基　　金：石家庄市驻冀高校重点研发计划项目(2024年);河北省农业科技成果转化资金专项资助项目(冀科农函【2022】45号);新型节能环保墙体日光温室及其高效种植模式示范应用(冀科农〔2023〕9号);保定市顺平县德盛草莓科技小院;保定市顺平县李千户草莓科技小院.

摘　　要：为提高草莓种苗繁育的数量和质量,本研究以‘红颜’草莓品种为对象,采用4种浓度的壳聚糖(800、1200、1600、2000 mg/L)进行叶面喷施,以清水喷施为对照,研究叶面喷施不同浓度壳聚糖对草莓母株繁苗系数和子苗质量的影响。结果表明,适宜浓度壳聚糖处理可以显著提升草莓母株的匍匐茎抽生数量、繁苗系数以及子苗的根系活力、SPAD值和净光合速率。同时,壳聚糖处理也可以增强草莓子苗硝酸还原酶(NR)和谷氨酰胺合成酶(GS)的活性,显著降低了子苗叶片的硝态氮含量,显著提高铵态氮含量。本试验中,1600 mg/L壳聚糖处理在各项指标上均显著优于其他处理组和对照组。In order to improve the quantity and quality of strawberry seedling breeding,four concentrations of chitosan(800,1200,1600,2000 mg/L)were applied on the leaf surface of strawberry cultivar,and the effects of different concentrations of chitosan on the propagation coefficient and seedling quality of strawberry mother plants were studied in this study compared with the treatment that applied with water.The results showed that suitable concentration of chitosan treatment could significantly increase the number of produce stolons,seedling propagation coefficient,root activity,SPAD value and net photosynthetic rate of strawberry mother plants.At the same time,chitosan treatment also enhanced the activities of nitrate reductase(NR)and glutamine synthetase(GS),significantly decreased the nitrate nitrogen content and significantly increased the ammonium nitrogen content in the leaves of strawberry seedlings.In this experiment,the treatment with 1600 mg/L chitosan was significantly better than other treatment groups and the control group in all indicators.

关 键 词：草莓 壳聚糖 种苗繁育 光合作用 氮代谢 

分 类 号：S24[农业科学—农业电气化与自动化] S831[农业科学—农业工程]