| 摘要: |
| 【目的】明确非洲菊现蕾期对养分浓度的要求，为基质栽培中养分的管理提供理论依据。【方法】将供试非洲菊（Gerbera jamesonii）品种“阳光海岸”幼苗种植在V（麦糠）∶V（玉米秸秆）∶V（牛粪）=3∶2∶1的混合基质中，50%以上植株现蕾后分别浇施0.5倍、1.0倍、1.5倍或2.0倍的营养液，分析营养液浓度对非洲菊生长和养分吸收的影响。【结果】1.0倍及1.5倍营养液浓度处理的非洲菊叶片及根系的鲜质量和干质量均较大，1.5倍营养液处理的叶片数和侧根数最多；较高浓度营养液处理的非洲菊对N和P的吸收能力较强，而较低浓度营养液处理的非洲菊对K和微量元素Zn、Fe及Mn的吸收能力较强。【结论】1.5倍营养液处理更有利于现蕾期非洲菊植株的生长。 |
| 关键词: 基质栽培 现蕾期 非洲菊 营养液浓度 生长发育 |
| DOI： |
| 分类号: |
| 基金项目:国家“十一五”科技支撑计划项目(2007BAD57B03，2006BAD07B02) |
|
| Effects of different nutrient concentrations on growth and nutrient absorbance of Gerbera jamesonii growing in substrates at flower budding stage |
|
NIU Jia, CHENG Zhihui
|
|
Northwest A&F University
|
| Abstract: |
| 【Objective】To better understand the culturing of Gerbera jamesonii in substrates,the nutrient requirements of gerbera plant at flower budding stage were investigated.【Method】‘Sunshine Coast’ was the chosen sample species from G．jamesonii,and seedlings were planted in substrates that mixed of wheat barn,corn cob and cow dung in a volume proportion of 3∶2∶1.Nutrient solutions with concentrations of 0.5,1.0,1.5 and 2.0 folds,were supplied to gerbera plants when flower buds showed up on over 50% seedlings.The effects of nutrient concentrations on growth and nutrient absorbance were analyzed.【Result】The higher fresh and dry weight of the aboveground part and the root of the plants were those with nutrient solutions group 1.0 and group 1.5,respectively.The highest number of lateral roots and leaves were found in nutrient treatment group 1.5.Nutrient solutions with higher concentrations were helpful to the use of macro elements N and P while that with lower concentrations increased the levels of K and microelements Zn,Fe and Mn in the plant.【Conclusion】The fastest growth rate of the plants during flower budding stage occurred at the treatment with nutrient concentrations of 1.5 folds. |
| Key words: substrate culture flower budding stage Gerbera jamesonii nutrient concentration growth and development |
