以转基因白桦试管苗为试材,采用草炭、黑土、河沙和蛭石混合物取代琼脂进行生根培养、带坨移栽,结果表明,经复壮培养的白桦试管苗接种到生根基质中,10 d左右在无根苗基部即可产生密集的不定根,生根培养40 d后,再经15 d~20 d的逐渐开瓶炼苗后即可带坨移栽,成活率高达到99%。 The transgenic Betula platyphrica plantlets were used as test materials, and the mixture of peat, black soil, river sand and vermiculite was used instead of agar for rooting and lump transplanting. The results showed that the newly regenerated Birch seedlings were inoculated into the rooting medium for about 10 days In the absence of root base can produce dense adventitious roots, rooting after 40 d, and then by 15 d ~ 20 d bottle opener can gradually Tuo Tuo transplanting, the survival rate of up to 99%.