磷对滇龙胆漂浮育苗幼苗生长和生理特性的影响  

Effects of Phosphorus on Growth and Physiological Characteristics of Gentiana rigescens Seedlings in Floating System

作　　者：李海峰[1] 袁朗白[1] 张德全[1] 段宝忠[1] 

机构地区：[1]云南省大理学院药学与化学学院,云南大理671000

出　　处：《中国实验方剂学杂志》2013年第19期167-170,共4页Chinese Journal of Experimental Traditional Medical Formulae

基　　金：大理州科技局2012年资助项目;大理学院2012应用开发基金项目;大理学院2011年中青年学术带头人培养项目

摘　　要：目的:以滇龙胆成熟种子为试验材料,探讨磷对滇龙胆种子漂浮育苗幼苗生长和生理特性的影响。方法:以珍珠岩、蛭石、草炭等混合成育苗基质,采用漂浮育苗法及植物生理学实验方法研究磷对滇龙胆种子漂浮育苗幼苗生长和生理特性的影响。结果:对滇龙胆漂浮育苗幼苗进行适宜浓度的施磷处理,不仅滇龙胆幼苗株高、根长、茎叶干质量、根干质量(P<0.01)极显著高于未施磷处理,而且叶片中叶绿素含量、硝酸还原酶(NR)活性和根系活力极显著高于未施磷处理(P<0.01)。结论:探明磷对滇龙胆漂浮育苗幼苗植物学性状和生理特性的影响,滇龙胆漂浮育苗营养液中磷质量浓度以50～100mg·L-1为佳。Objective： Experiments were carried out to study the mature seeds of Gentiana rigescens, and the effects of phosphorus on growth and physiological characteristics of G. rigescens seedlings in the floating system were explored. Method： Perlite was mixed with vermiculite, peat, et al, to form the seedling substrate, and the effects of phosphorus on growth and physiological characteristics of G. rigescens seedlings in the floating system were studied by floating nursery law and plant physiology experimental method. Result： The suitable concentration phosphorus was used to treat the seedlings of G. rigescens in the floating system, not only make the seedling plant height, root length, stem and leaf dry weight, root dry weight significantly higher than those not treated with phosphorus （P 〈0.01）, but also make the leaves chlorophyll content, nitrate reductase （NR） activity and root activity were significantly higher than those not treated with phosphorus （P 〈 0.01 ）. Conclusion： This study ascertained the effects of phosphorus on the botanical characters and physiological characteristics of G. rigescens seedlings in the floating system, and the optimal phosphorus concentration in the floating system nutrient solution of G. rigescens is within the range between 50 mg·L^-1 and 100 mg·L^-1

关 键 词：滇龙胆 漂浮育苗 磷 生长发育 生理特性 

分 类 号：R282[医药卫生—中药学]