• ISSN 1008-505X
  • CN 11-3996/S
纪瑛﹡, 张庆霞, 杜彦斌, 王斌. 磷肥对苦参生长和生物总碱的效应[J]. 植物营养与肥料学报, 2009, 15(5): 1142-1146. DOI: 10.11674/zwyf.2009.0523
引用本文: 纪瑛﹡, 张庆霞, 杜彦斌, 王斌. 磷肥对苦参生长和生物总碱的效应[J]. 植物营养与肥料学报, 2009, 15(5): 1142-1146. DOI: 10.11674/zwyf.2009.0523
JI Ying*, ZHANG Qing-xia, DU Yan-bin, WANG Bin. Effect of phosphorus on growth and total alkaloids of Sophora flavescens[J]. Journal of Plant Nutrition and Fertilizers, 2009, 15(5): 1142-1146. DOI: 10.11674/zwyf.2009.0523
Citation: JI Ying*, ZHANG Qing-xia, DU Yan-bin, WANG Bin. Effect of phosphorus on growth and total alkaloids of Sophora flavescens[J]. Journal of Plant Nutrition and Fertilizers, 2009, 15(5): 1142-1146. DOI: 10.11674/zwyf.2009.0523

磷肥对苦参生长和生物总碱的效应

Effect of phosphorus on growth and total alkaloids of Sophora flavescens

  • 摘要: 采用盆栽试验,设施P2O5 0、15、30、60 mg/kg 等4个水平,研究了磷肥对苦参生长、生物总碱含量和生物总碱产量的效应。结果表明,施用磷肥对苦参生长以及苦参总碱含量均有显著促进效应。施P2O5 30 mg/kg苦参根鲜重、干重和根直径显著高于对照和60 mg/kg处理,分别较对照增加23.5%、18.5%和14%;施P2O515 mg/kg处理苦参叶绿素含量、总碱含量和单株总碱产量显著高于对照和60 mg/kg处理,分别较对照增加17.1%、34.8%和56.3%。磷对单株干重增加效应主要是由于主根干重增加所致;苦参根中苦参总碱含量的增加则是由于叶片中叶绿素含量增加。施磷量30 mg/kg根干重最高,施磷量15 mg/kg苦参总碱含量最高。综合分析表明,获得较高的单株苦参总碱产量适宜的施P2O5量是15 mg/kg。

     

    Abstract: A pot experiment was conducted to study the effect of phosphorus (P) on growth, total alkaloids concentration and total alkaloids yield of Sophora flavescens. Four levels of P2O5 were set up: 0(Control), 15, 30, 60 mg/kg using single superphosphate (P2O512%) fertilizer. Results showed that stem height, root fresh weight, root dry weight, chlorophyll (Chl) concentration, total alkaloids concentration and total alkaloids yield of Sophora flavescens increased significantly with P application. The 30 mg/kg P2O5 applied produced significantly higher ether root fresh weight (45.5 g/plant) and root dry weight (23.1 g/plant) than control and 60 mg/kg P2O5 applied. It also increased the root fresh and dry weight by 23.5% and 18.5% compared with the control respectively. The 30 and 15 mg/kg P2O5 applied did not differ significantly in root fresh and dry weight. Both root dry weight /root fresh and dry weight / total plant dry weight decreased with phosphorus application. Phosphorus had significant positive effect on root diameter. Root diameter was the highest at 30 mg/kg P2O5 application and it increased by 14%compared with the control. The percentage of xylem diameter increased with P application, while the percentage of root bark depth decreased. The 15 mg/kg P2O5 applied produced significantly higher ether Chl concentration, total alkaloids concentration and total alkaloids yield than control and 60 mg/kg P2O5 applied. Compared to the control, Chl concentration, total alkaloids increased by 17.1% and 34.8% compared with the control, respectively. The total alkaloids yield of per plant increased by 56.3%. At the condition of our experiment, the highest root dry weight and total alkaloids were observed at P2O5 application 30 and 15 mg/kg, respectively. For the high total alkaloids concentration, the suitable P2O5 rate is 15 mg/kg.

     

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