作者于一九六九年起在伊凡诺夫州采用针叶树种的嫩枝条进行了多年的嫁接试验。方法是直切面接触形成层。用薄膜包扎。嫁接时间是从五月下半月到七月为止。其优点是成活率高:一九七一年松树接松树180O株,成活率98％,在干旱的一九七二年接2900株,成活率97％;一九七三年接3600株,成活率为99％;一九七四年云杉接云杉100株,成活率也达85％。 The author conducted many years of grafting trials with softwood species of coniferous species in Ivanov from 1969 onwards. The method is to contact the formation layer in a straight contact. Wrap with film. Grafting time is from the second half of May until July. The advantage is the high survival rate: 180 pine trees were connected with 180O pine trees in 1971, with a survival rate of 98%. In 1972, there were 2900 pine trees with a survival rate of 97%. In 1973, 3600 trees were survived The rate was 99%. In 1974, 100 spruce trees were spruce, and the survival rate reached 85%.