青叶胆可持续利用策略研究

Strategy on Persistent Utilization of Swertia Mileensis

通过对青叶胆物候期、生物学特性、生态环境考察 ,测定种子活力及种子萌发试验等一系列实验研究 ,得出 :①青叶胆种子属中温萌发型 ,种子萌发最低温为 15℃～ 18℃ ,最适温度为 2 5℃ ,0 2 %硝酸钾浸种促进种子萌发效果较好。②青叶胆适生环境为坡地 ,土质疏松 ,沥水性较好。③在自然状态下在小灌木坡柳林中 (下 ) ,人工栽培时需要一定的郁蔽。它可与坡柳Dodonaeviscosa、黄茅Heteropogoncontortus草等混栽形成热性灌草丛 ,能有效遏止石漠化 ,此既有一定的生态学意义 。

We have made a series of researches on phenophase, biological characteristic, ecological environment, inspect activity of seed and test many kinds of reagents to improve seed germinate. The results are :1. the seed of Swertia mileensis belong to middle temperature germinate form, the optimal temperature is 25 ℃, seed is rinsed in 0.2% KNO 3 24h could accelerate its germination. 2. its adaptable growing environment is on slope and thesoil is porous. 3.it is companion of Dodonae by nature. The herbs need a certain of shadow when are cultured. The could prohibit rock from becoming sand. The results can provide foundation for persistent utilization of Swertia mileensis. (Original article on page 107)