吉龙草的引种

对吉龙草[Elscholtzia communis(Coll.et Hemsl.)Diels] 的适宜播种期、种植环境、不同生育期的精油含量及主香成分的研究表明,在常温下种子发芽力的保存期只有5—6个月,种子发芽率达55％。5—6月上旬为适宜播种期,海拔800米以上的热带山地和亚热带地区为适宜生长环境,热带低海拔地区可早播早收,也宜种于排水良好,中午后可自然遮阴的小环境。鲜枝叶的精油含量随生长发育日趋成熟而逐渐增加,为0.3—0.8％,主香成分柠檬醛的含量为92.3—95.98％,不同种植地及各生育期无明显的变化。

THE INTRODUCTION OF ELSCHOLTZIA COMMUNIS

Anthers have made experiment on the suitable seeding time and planting enviroment, and determined the content of essential oil and main constituent from the leaves of Elscholtzia communis Diels at different growth and development stages. The results showed that the storage life of seeds with germinating power is within 5-6 months at normal temperature, but germinating rate of seeds is only up to 55%. The suitable seeding time is from May to the first ten days of June a year. Both tropical mountainous area over 800 m altitude and subtropical regions are fit growing enviroment. In the tropical regions at lower altitude, seeds can be early sown and harvested, and grown in suitable microenviroment where soil water is well drained off and natural shade trees are available in the afternoon. The essential oil content of fresh leaves and shoots is gradually increasing along ripeness of the plant growth and development with each passing day and is 0.3-0.8%. The main component is citral, its content is 92.3-95.8%, and not obvious variation with different planting site and each growth and development stages.