| 株距·磷肥·钾肥对蓝蓟生长发育·光合特性的影响 |
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| 引用本文： | 王楠,徐惠风,高志新,侯威,冯政东,魏龙雪.株距·磷肥·钾肥对蓝蓟生长发育·光合特性的影响[J].安徽农业科学,2013(31):12295-12297. |
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| 作者姓名： | 王楠 徐惠风 高志新 侯威 冯政东 魏龙雪 |
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| 作者单位： | 吉林农业大学农学院,吉林长春,130118;吉林农业大学农学院,吉林长春,130118;吉林农业大学农学院,吉林长春,130118;吉林农业大学农学院,吉林长春,130118;吉林农业大学农学院,吉林长春,130118;吉林农业大学农学院,吉林长春,130118 |
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| 基金项目： | 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）. |
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| 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（40cm），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，对砌（净光合速率）、丹（蒸腾速率）、a（胞间CO2浓度）的影响均达0．05显著水平；钾肥对气孔导度（岱）、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。
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| 关 键 词： | 蓝蓟 株距 磷肥 钾肥 光合特性 |
Effects of Planting Distance,Phosphorus and Potassium on Growth and Photosynthetic Characteristics of Echium vulgare L. |
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| Institution: | WANG Nan et al (College of Agronomy, Jilin Agricultural University, Changchun, Jilin 130118) |
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| Abstract: | 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. |
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| Keywords: | Echium vulgare L Planting distance Phosphate Potash Photosynthetic characteristics |
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