冬凌草的人工栽培与水土保持效益试验研究

Experimental Study on Artificial Cultivation of Rabdosia Rubescens and Its Benefits for Soil and Water Conservation

冬凌草原为经济价值较高的野生药用水土保持植物,随着对其开发利用,野生资源日显不足。经试验分析,人工栽培的冬凌草遗传性状稳定,其生物学、生态学特性以及药用价值与野生自然资源相比,无明显差异,故扩大人工栽培是可行的。试验研究出的人工种植技术,可使冬凌草种子出苗率由野生传播的不足1％提高到87.2％;扦插生根率达到90.5％。冬凌草具有良好的蓄水保土作用,一年生冬凌草区比对照减少径流量36.1％,土壤流失量减少48.5％;比一年生金银花区径流量削减18.3％,减少土壤流失26.8％。

Rabdosia rubescens is a good wild herb with high economic value for medical use and soil and water conser-vation. Along with exploitation and utilization of rabdosia rubescens, its wild resource was increasingly in-sufficient. Experiment and analysis showed the feasibility of enlargement of artificial cultivation. The artifi-cial cultivated rabdosia rubescens was stable in hereditary character, and its biologic and ecologic character-istics and medical value were without obvious difference as compared with wild rabdosia rubescens. The arti-ficial cultivated technique used in the experiment can increase the rate of emergence of rabdosia rubescens seed from less than 1% by wild spreading to 87. 2% and increase the rooting rate of cutting by 90. 5%. Rabdosia rubescens has good effects in retaining water and preserving soil. The area growing annual rabdosia rubescens can reduce runoff and soil loss by 36.1% and 48. 5% respectively than contrast area, and by 18. 3% and 26. 8% respectively than the area growing annual honeysuckle.