The activity of soil microorganism is inhibited at low dose. At high dose, the crop yield is decreased by 10%, and on acid soil,by 50%. Alfalfa and tree are also yield decreased.

• 低剂量时 ；即可使土壤微生物活性受到抑制 ；高剂量时可使农作物减产 1 0%25 ；在酸性土壤上减产达 50%25以上 ；对苜蓿及树木也同样引起减产 .