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在相同立地条件下,分别采用不同方法、不同部位、不同时间及不同苗龄和龄级对银杏良种嫁接育苗效果进行对比试验。结果表明:芽接苗成活率和抽枝率均明显高于枝接苗;2年和3年实生苗砧木芽接苗成活率和抽枝率均达到81 %以上,从育苗周期及经济效益考虑,宜选用2年生实生苗为砧木;1年生接穗嫁接成活率和生长率明显提高;嫁接时间以早春 (4月)为宜;高位嫁接可明显缩短苗周期,适用于采穗圃育苗。
Under the same site conditions, using different methods, different parts, different time and different seedling age and age class Ginkgo seedling grafting effect comparison test. The results showed that the survival rate and the rate of shoots of bud seedlings were significantly higher than that of the branch seedlings. The survival rate and the rate of the shoots of seedling seedlings of two-year and three-year seedlings reached more than 81%. Considering the breeding cycle and economic benefits, Selection of 2-year-old seedlings as rootstocks; 1-year-old scion graft survival rate and growth rate was significantly improved; grafting time in early spring (April) is appropriate; high grafting can significantly shorten the seedling cycle, suitable for picking nursery nursery.