目的 提高天麻种子的发芽率和原球茎的生长速度。方法 将天麻种子、营养物质及天麻种子萌发菌一起包埋在海藻酸钠胶丸中进行播种。结果 天麻种子用海藻酸钠包埋成胶丸后，其中以胶丸中加入营养及03号萌发菌处理的效果最佳，培养75 d种子发芽率可达56.65%，原球茎和营养繁殖茎大小为4.63 mm×1.36 mm；而用03号菌叶的对照仅为38.71%和2.93 mm×0.89 mm。同时，播种120 d以后，胶丸中发芽原球茎生长的营繁茎仍继续生长，而对照已萎缩。结论 天麻种子用海藻酸钠包埋成胶丸后，可显著提高种子的发芽率及原球茎的生长速度。

OBJECTIVE To increase the germinating rate of the seeds of Gastrodia elata and the growing rate of the protocorms.METHODS The seeds of Gastrodia elata,nutrients and endophytic fungi were mixed in alge acid-Na to form the encapsulating seeds.RESULTS The germinating rate of the seeds reached up to 56.65% and the size of protocorm reached 9.41 mm×1.55 mm in encapsulated seeds after cultured for 75 days with mixing strain 03 of endophytic fungi and nutrient in encapsulation meanwhile in the control group,the germinating rate was 38.71% and the size of protocorm was 1.45 mm×0.70 mm.After 4 months,the protocorm of the encapsulating seeds had been growing,but the control protocorms had withered.CONCLUSION After the seeds of Gastrodia elata were mixed to form the alge acid-Na encapsulating seeds,the germinating rate of and the growing rate of protocorms were increased obviously.