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过去,我省核桃芽接育苗多在3月份(春分前后10天)进行,由于春旱、气温低,一般大面积生产成活率只有30—60%,未成活部分要待翌年春季再行补接,需间隔一年的时间。为缩短这一间隔期,我们从1977年以来,在晋宁双河、漾濞核桃站和昆明金殿林场等地,进行了大面积(嫁接3,000多芽)夏季芽接试验,其结果,成活率达78%。嫁接方法如下: 1.砧木和接穗的准备:选10年生以下铁核桃树和铁核桃大树桩上1—3年生的萌芽枝条,或苗圃中1—3年生粗约2厘米以上的苗
In the past, the province’s walnut bud seedlings and more in March (before and after the equinox 10 days), due to spring drought, low temperatures, the general survival rate of large-scale production is only 30-60% of the surviving part of the spring to be followed by the next pick, Need a time interval of one year. To shorten this interval, we conducted a large-area (more than 3,000 buds) summer budding test since 1977 in Jinling Shuanghe, Yangbi Walnut Station and Kunming Golden Palace Forest Farm. As a result, the survival rate reached 78%. Grafting methods are as follows: 1 rootstock and scion preparation: choose 10-year-old iron walnut and iron walnut stump 1-3 years old sprouting branches, or nursery 1-3 years old roughly 2 cm thick seedlings