利用万用电表对板栗枝干病害的病情程度与树皮电阻值的关系进行了研究。

Study on the Relationship Between Leaf Content of Manganese and Internal Bark Necrosis Disease of Apple Trees;

youdao

利用万用电表对板栗枝干病害的病情程度与树皮电阻值的关系进行了研究。

Study on the Relationship Between Leaf Content of Manganese and Internal Bark Necrosis Disease of Apple Trees;

youdao