嫁接时间和嫁接方法对香榧苗成活和春梢生长的影响

Effects of Grafting Time and Grafting Method on Seedling Survival and Spring Shoot Growth of Torreya grandis

试验用3~6 a木榧实生苗做砧木,用切接和贴枝接方法,分别于3月和9月嫁接细榧,统计分析嫁接成活率和春梢生长量。结果表明:3~6 a砧木苗龄越大,嫁接苗成活率越高。6 a砧木春季嫁接成活率高于秋季,最高为92%;春梢长25.6 cm,显著大于其它苗龄砧木。秋季嫁接采用贴枝接的方法,成活率和接穗生长量均优于切接,需增加管护成本,以提高苗木保存率。所以秋季嫁接作为春季嫁接的补充或者是资源收集的需要采取的措施是可行的。

In this experiment,3~6 a Torreya grandis seedlings were used as rootstock,Xifei were grafted in March and September respectively by two methods of cut-grafting and scion-grafting,and then the survival rate of grafting and the growth of spring shoots were statistically analyzed.The results show that the survival rate of graft tended to increase with the increase of rootstock seedling age.The grafting survival rate of 6 a rootstock in spring was 92%higher than that in autumn.The spring shoot length was 25.6 cm,which was significantly larger than other rootstocks of seedling age.The survival rate and scion growth of scion-grafting are better than cut-graft in autumn,so it is necessary to increase the cost of management and care to improve the rate of seedling preservation.Therefore,it is feasible for autumn grafting to be taken as a supplement to spring grafting or as a necessary measure for resource collection.