多效唑在蔓性千斤拔上应用的初步研究

Preliminary study on the application of PP333 on Moghania philippinensis

为了解生长调节剂提高蔓性千斤拔产量的方法及机理,进行多效唑对蔓性千斤拔的化控试验。在蔓性千斤拔初花期,设30、60和90株·m^(-2)3个植株密度,用浓度为0、300、600、900 mg·L^(-1)的多效唑对蔓性千斤拔进行叶面喷施,测定叶绿素、叶面积、叶面积指数及药材产量。结果表明,植株密度为60株·m^(-2)、多效唑喷施浓度为600 mg·L^(-1)的处理,蔓性千斤拔叶绿素含量显著高于其它处理,叶面积和叶面积指数适度缩小,药材干重提高了16.7%。初步确定蔓性千斤拔增产效果最好的植株密度为60株·m^(-2)、多效唑喷施浓度为600 mg·L^(-1)。

This research aimed at understanding the improving method for production and the mechanism for growth regular of Moghania philippinensis. M. philippinensis were cultured in three density levels（30,60 and 90 individuals · m^- 2 ）, and at the early stage of flowering, each density levels of the plants were sprayed with 0,300,600 and 900 mg · L^-1 PP333. The chlorophyll, leaf area,leaf area index and yield of medicinal materials were determined. The results showed that： under 60 individuals · m^-2 of planting density combined with 600 mg· L^-1 of PP333,the chlorophyll content was significantly higher than that of others,leaf area and leaf area index were reduced moderately,dry weight of medicinal materials were increased 16. 7%. The best combination for the yield increasing of M. philippinensis in the experiment was 60 individuals · m^-2 of planting density with 600 mg· L^- 1 of PP333.