提高大南果梨嫁接成活率的技术措施大南果梨是南果梨的第二代品种，是鞍山、辽阳等我省中北部地区重点发展的梨品种之一。近几年来其苗木一直供不应求，各地育苗者经常反映大南果梨嫁接成活率低，笔者经过多年实践，发现影响其嫁接成活率的主要原因有以下几点：（１）砧木... Technical Measures to Improve the Survival Rate of Da Nan Guo Pear Grafting Da Nang Guo Pear is the second generation variety of Nanguo Pear and one of the pear varieties that are mainly developed in central and northern areas of Anshan and Liaoyang. In recent years, its seedlings have been in short supply, nursery around the South often reflect the graft survival rate is low, the author after many years of practice and found that the impact of the graft survival rate of the main reasons are the following: (1) Rootstock ...