为了获得优质林木种子,迅速建立嫁接种子园是目前迫切需要解决的重要问题。 林木嫁接的最适宜时期是以物侯期为基础的,而物侯期又取决于春天的气温。这样,为了提高嫁接成活率,就需要在每一年的一定时期内进行嫁接,但是,每一昼夜的平均气温也是不一样的。在森林草原地区的有利时期内,利用叶芽开始膨胀的越冬松树枝条进行这一工作为好。在这 In order to obtain high-quality tree seeds, the rapid establishment of grafted seed orchard is an urgent and urgent problem to be solved. The most suitable period of grafting is based on the Houjue period, which in turn depends on the spring temperature. In this way, in order to improve the survival rate of grafting, it is necessary to carry out grafting within a certain period of each year. However, the average temperature of each day and night is also different. In the favorable period of the forest steppe area, it is better to do this work with the winged pine branches that begin to swell with leaf buds. At this