海拔、播种期和播种量对三岛柴胡生长的影响

Effects of altitude,sowing date and sowing amount on growth of Bupleurum falcatum L.

比较不同处理对三岛柴胡(Bupleurum falcatum L.)生长发育的影响,为其规范化栽培提供依据。以三岛柴胡为试验材料,设置不同海拔、播期、播种量处理,观察物候期,测定相关生长指标。结果表明,随着海拔升高,三岛柴胡苗期、抽茎拔节期、孕蕾期、开花期和果期相应推迟,海拔600 m株高最高,不同海拔处理间主根长、根粗、单根重、小区根产量和折合产量无显著差异;2月23日播种的三岛柴胡苗期、抽茎拔节期、孕蕾期、开花期和果期相应推迟,两个播期处理的主根长、根粗、单根重、小区根产量和折合产量无显著差异;随着播种量的加大,主根长、单根重均表现为逐渐减小趋势,根粗和小区根产量无显著差异。海拔1100 m以下适宜三岛柴胡生长;11月和2月播种均可;播种量以15.0 kg/hm^(2)为宜,综合经济效益较好。

The experiment was conducted to compare the effects of different treatments on growth and development of Bupleurum falcatum L.and provide a basis for the standardized cultivation of B.falcatum L..Using B.falcatum as experimental material,different altitudes,sowing dates and sowing amounts were set,the phenological stage was observed,and the relevant growth indexes were determined.The results showed that the seedling stage,shoot elongation stage,budding stage,flowering stage and fruiting stage of B.falcatum were correspondingly delayed with the increase of altitude.The plant height was the highest at 600 meters above sea level,and there was no significant difference in main root length,root thickness,single root weight,plot root yield and equivalent yield among different altitudes’treatments.The seedling stage,shoot elongation stage,budding stage,flowering stage and fruiting stage of B.falcatum were correspondingly delayed when sowing on February 23rd,but there were no significant differences in main root length,root thickness,single root weight,plot root yield and equivalent yield between two sowing dates’treatments.With the increase of seeding amount,main root length and single root weight showed a decreasing trend,but there was no significant difference in root thickness and plot root yield.The altitude below 1100 meters was suitable for the growth of B.falcatum.It could be sown in November and February,and the optimum sowing amount was 15.0 kg/hm^(2),under which the comprehensive economic benefits were better.