防风不同播种量与移栽密度的研究

Study on Suitable Seedling Rate and Transplanting Density of Saposhnicovia divaricata

目的:对乌兰浩特地区防风直播生产田、育苗田、移栽生产田的不同播种量或移栽密度进行对比研究,筛选出不同生产田的适宜播种量或移栽密度以指导生产实践。方法:测量和比较不同播种量及移栽密度下药材的亩产量、根粗、鲜根重、根条数。结果:药材生产田随着播种量或移栽密度的增大,药材亩产量增加,但根部各指标值呈现出下降的趋势。育苗田的播种量仅对样方内株数影响较大,表现出正相关关系,但是当密度增加到19 g·m^(-2)时,其余指标值及亩产量明显较低。结论:直播田适宜播种量为3 g·m^(-2),播种密度为16株·m^(-2),垄上单行播种;育苗田适宜播种密度为15 g·m^(-2);移栽田适宜移栽密度为17株·m^(-2),株距10 cm。

Objective：To study different kinds of sowing or transplanting density in direst-seeding field,nursery field and transplanting field in Ulanhot with the aim of selecting the best way of density in different production fields.Methods：The yield traits,taproot thick,root number,root fresh weight of Saposhnicovia divaricata in the test area were measured and compared under different planting density.Results：The medicinal yield rose with the increase of seeding rate and transplanting density,the root index showed a downward trend in medicinal production fields.Seedling rate only had a great impact on the number of samples and showed positive correlation,but when the density increased to 19 g·m^-2,the other index and yield were significantly lower.Conclusion：Direct-seeding field suitable planting density was 3 g·m^-2,ridge sowing in single line;Nursery field suitable planting density was 15 g·m^-2.Transplanting field was suitable for transplanting density of 17 plants·m^-2 with planting distance of 10 cm.