Study on grafting skill of Picea crassifolia Kom.青海云杉嫁接技术的研究。
Since grafting reduces maturing age, it should be tried.既然嫁接能缩短成熟期，就应当试一试。
Although no significance was found between the 2 grafting methods, a trend toward greater strength in the iliac crest graft group was observed.两种移植法尽管没有发现显著差异，但是髂骨移植骨组具有强度更大的趋势。
