论文部分内容阅读
林木结实受多方面环境因子的综合影响。对落叶松母树的树干进行环割,能调节养分,促进早期开花结实,为此我们在1979～82年进行了环割试验,现将观察情况报告如下。 1、试验地基本情况。试验区设在国营开原县南城子林场落叶松母树林,地处寇河水库迎水面,坡度16°左右,坡向北,黄沙壤土。母树林未发生过病虫等灾害,树种和长势基本上具有代表性。
Forest firming is affected by the comprehensive effects of various environmental factors. Ring on the trunk of the deciduous tree to cut, can regulate nutrients and promote early flowering and fructification, for which we conducted in 1979 ~ 82 ring cut test, the observation is reported as follows. 1, test the basic situation. The experimental zone is located in the forest tree of Larix principis-rupprechtii in Nanchengzi Forest Farm of Kaiyuan County in the state-run. It is located at the water level of Kouhe Reservoir and has a slope of 16 ° and a north slope with yellow sandy loam. There was no pest and other disasters in the mother trees, and the tree species and the growth were basically representative.