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萧山县林场凌山林区(前身是戴村蚕桑场),为了解决春季嫁接桑树争劳力、争季节的矛盾,于1961年冬季开始,本着“一切经过试验”的精神,进行桑树冬季根接试验获得成功。通过实践,一致队为,冬接桑树好处很多:一是嫁接时间长。一般从12月初开始到翌年4月初均可嫁接,还可以在室内进行操作,劳力容易安排。二是成活率高。冬季嫁接,成活比较有把握。他们从1962年开始,十年来每年在冬季嫁接桑苗万把株,据1962年冬到1963年春两季根接6,000株湖桑统计,共生产优良桑苗4,059株,出圃率达67.8％,其中特级苗1,149株,占28.3％,甲级苗1,456株,占35.9％,乙级苗1,290株,占31.8％。最多的1964年嫁接了50,000株,成活率
In order to solve the contradiction between the spring mulching mulberry strife and the war season, beginning in the winter of 1961, in the spirit of “everything tested,” the mulberry winter root test was conducted Success. Through practice, consistent team, winged mulberry benefits in winter are many: First, a long time grafting. Usually from early December to early April the following year can be grafted, you can also operate indoors, labor is easy to arrange. Second, high survival rate. Winter grafting, more sure to survive. From 1962 onwards, they planted 10,000 trees in winter in the past 10 years. According to the statistics of 6,000 trees collected from the winter of 1962 to the spring of 1963, 4,059 were excellent mulberry trees and the yield rate was 67.8%. Among them, There were 1,149 super seedlings, accounting for 28.3%, 1,456 Grade A seedlings, accounting for 35.9% and 1,290 Grade B seedlings, accounting for 31.8% of the total. Up to 1964, 50,000 were grafted, the survival rate