Advantage:
1. Promote nitrogen fixation and absorption.
2. It secretes gibberellin, IAA and other growth factors to promote plant growth.
3. Metabolites such as polymyxin and defencin secreted by it can effectively destroy insect cuticle and cell structure to kill insects.
4. It can remove ammonia nitrogen and subsalt produced by the process of decomposition；
5. It can solve potassium, dissolve phosphorus, remove aflatoxin, etc.
