The content of nitrogen and phosphorus is moderate, otherwise it is easy to affect <br>the use of mycorrhizal bacteria in seedlings, and the mixed medium of mycorrhizal bacteria is evenly placed
The content of nitrogen and phosphorus is moderate, otherwise it is easy to affect mycorrhizal fungi<br>When it is used in seedling raising, the mycorrhizal mixed medium is evenly put in
The nitrogen content is moderate, otherwise it will easily affect mycorrhizal fungi. When used in seedling raising, mycorrhizal fungi mixed medium is evenly put in.