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一、选购生物菌肥时,要注意其是否过了产品保质期,一般超过生产日期一年的生物菌肥活性会明显降低。再看有无农业部登记证,正规的厂家生产的产品都有农业部登记的证明。还有看包装袋上标明的活菌数量是否符合国家规定(国家规
First, the purchase of biological fertilizer, pay attention to whether it is over the shelf life of products, generally more than the production date of biological activity of a year will be significantly reduced fertilizer. Look at the Ministry of Agriculture registration certificate, the formal manufacturers of products have proof of registration of the Ministry of Agriculture. Also see whether the number of bags marked on the package in line with state regulations (national regulations