论文部分内容阅读
我们在多年的生产实践中注意到:不论是在同一红松人工幼林内的幼树,或同一苗床上的幼苗都有色泽不一,长势优劣之别。对这些现象进行了反复、细致地观察,发现红松的根部存在着瘤状体 (所谓根瘤),并由于瘤的
We have noticed in many years of production practice that young trees in the same Korean pine young plantation or young seedlings in the same seedbed all have different colors and grow better. Repeatedly and carefully observed these phenomena, we found that there is a nodule at the root of Korean pine (the so-called root nodule)