磷营养对天竺葵与彩叶草生长发育的影响
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(1.东北农业大学,黑龙江 哈尔滨 150030;2.PurdueUniversity,Department of Horticulture andLandscape Architecture 625 Agriculture MallDrive,WestLafayette 47907-2010)

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张佳音(1991-),女,黑龙江省双鸭山人,硕士,研究方向为风景园林专业植物。E-mail:741312463@qq.com。

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基金项目:黑龙江自然科学基金(C2017030)。


Phosphorus requirements of geranium and coleus during vegetative and reproduction growths
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(1.Northeast AgricultureUniversity,Harbin150030;2.PurdueUniversity,Department of Horticulture and Landscape Architecture 625 Agriculture MallDrive,West Lafayette47907-2010)

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    摘要:

    为确定天竺葵( Bullseye Scarlet)和彩叶草( Chocolate Scarlet)在温室生产中所需磷的最佳浓度,本试验通过调整霍格兰营养液中 KH 2PO4的浓度梯度(0、3、5、10、15、20和 30 mg·L -1)使磷元素浓度发生变化,并用其滴灌植物,进而探究磷营养对天竺葵与彩叶草生长发育的影响。结果表明,天竺葵和彩叶草在植物营养生长和生殖生长过程中,植物的生长参数以对数函数速率而增加;天竺葵和彩叶草的茎叶部分在营养生长时期对磷的需求量大于生殖生长时期;在不同的生长时期,磷元素对彩叶草生长的影响始终大于对天竺葵生长的影响;在营养生长期间,天竺葵生长的最适磷浓度为 20 mg·L -1,在生殖生长阶段,其生长最适磷浓度为 15 mg·L -1;在营养生长期间,彩叶草生长的最适磷浓度为 15 mg·L -1,在生殖生长阶段,其生长最适磷浓度为 10 mg·L -1。

    Abstract:

    In order to determine the optimal concentration of phosphorus required for the production of geranium( Bullseye Scarlet)and coleus( Chocolate Scarlet),this experiment adjusted the concentration gradient of KH 2PO4 in Hogan’s nutrientsolution(0,3,5,10,15,20 and 30 mg·L -1)which changed the concentration ofphosphorus,and used it to dripplants, then explored the effect of phosphorus nutrition on the growth and development of geranium and coleus. The results showed thatduring the vegetative growth and reproductive growth of geranium andcoleus,the growth parameters of plants increased with the logarithmic function rate. The stem and leaf parts of geranium and coleus had higher phosphorus requirement during vegetativegrowth than reproductive growth. During the different growthperiod,the effect of phosphorus on the growth of coleus was alwaysgreater than that on the growth of geranium. During the vegetativegrowth,the optimum phosphorus concentration of geranium was 20 mg·L-1. During the reproductive growth stage,the optimum phosphorus concentration for growth was 15 mg·L -1 .During the vegetative growth period,the optimum phosphorus concentration for the growth of coleus was 15 mg·L -1. In thereproductive growthstage,the optimum phosphorus concentration for coleus growth was 10 mg·L -1.

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张佳音,王静怡,樊金萍,Hye-Ji Kim.磷营养对天竺葵与彩叶草生长发育的影响[J].中国土壤与肥料,2019,(5):65-71.

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  • 收稿日期:2018-11-06
  • 最后修改日期:
  • 录用日期:2019-02-02
  • 在线发布日期: 2019-10-30
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