株距·磷肥·钾肥对蓝蓟生长发育·光合特性的影响  

Effects of Planting Distance,Phosphorus and Potassium on Growth and Photosynthetic Characteristics of Echium vulgare L.

作　　者：王楠[1] 徐惠风[1] 高志新[1] 侯威[1] 冯政东[1] 魏龙雪 

机构地区：[1]吉林农业大学农学院,吉林长春130118

出　　处：《安徽农业科学》2013年第31期12295-12297,共3页Journal of Anhui Agricultural Sciences

基　　金：吉林省科技厅基础应用项目(201105070);吉林省科技厅农村处2013重点项目;吉林省教育厅重大项目(201240)

摘　　要：[目的]为探究不同栽培方法对蓝蓟生长及光合特性的影响。[方法]采用3因素3水平的大田正交试验,研究不同株距(T)、磷(P)、钾(K)组合对蓝蓟幼苗期生长发育及光合特性的影响。[结果]蓝蓟生长的最适株距为T2(40 cm),磷、钾配比为P2∶K1=2∶1。三因素中,磷肥对蓝蓟生长的影响较大,尤其对株高有显著影响;株距对蓝蓟光合特性的影响最大,对Pn(净光合速率)、Tr(蒸腾速率)、Ci(胞间CO2浓度)的影响均达0.05显著水平;钾肥对气孔导度(Gs)、叶绿素总量、叶绿素a含量的影响也均达0.05显著水平。[结论]适宜的株距以及磷、钾营养合理配施能有效改善蓝蓟光合特性,促进其幼苗期的生长发育。[ Objective ] The research aimed to explore the effects of different cultivation methods on growth and photosynthetic characteristics of Echium vulgare L. [ Method] The ornamental experimental design with three factors including planting distance （T）, phosphorus （P） and po- tassium （K） at three levels were arranged. The effects of different combinations on growth and photosynthetic characteristics of Echium vulgare L were studied. [ Result] The optimum planting distance was T2 （40 cm） , aM the best phosphorus and potassium ratio was P2： KI = 2： 1. A- mong three factors, P was the most important factor influencing the growth and the development of Echium vulgare L. , especially to the height of plant. The photosynthetic characteristics of Echium vulgare L. including Pn （ net photosynthesis rate）, Ci （ intercellular CO2 concentra- tion）, Tr （ transpiration rate） were remarkably affected by planting distance. The effects of potassium on stomatal conductance （ Gs ）, chloro- phyll a and chlorophyll a ＋ b were significant. [ Conclusion ] Suitable planting distance and phosphorus, potassium fertilizer could reasonably improve photosynthetic characteristics and promote seedling growth and development of Echium vulgare L.

关 键 词：蓝蓟 株距 磷肥 钾肥 光合特性 

分 类 号：S604[农业科学—园艺学]