对培养过程中丝状真菌的产磷酸酶活性进行了比较,筛选了一株产磷酸酶活性较高的曲霉菌株HQ,对其产酶特性及对不同难溶性磷底物的磷释放量进行了研究。液体培养结果表明,该菌株在以植酸钠为底物时,中性磷酸酶活性为0.54mg m l-1,磷释放量46.65μg m l-1。固体培养结果表明,以畜禽废弃物为培养基的磷酸酶活性最高,其中性磷酸酶活性为37.4mg g-1。该菌株有潜力作为堆肥微生物的候选菌株。 The phosphatase activity of filamentous fungi in the process of cultivation was compared. A strain of Aspergillus HQ with higher phosphatase activity was screened, and its enzyme production characteristics and phosphorus release of different insoluble phosphorus substrates the study. The results of liquid culture showed that the neutral phosphatase activity of this strain was 0.54 mg m l-1 and the phosphorus release amount was 46.65 μg m l-1 when sodium phytate was used as substrate. The results of solid culture showed that the activity of phosphatase was highest with livestock waste as substrate, and the activity of neutral phosphatase was 37.4 mg g-1. This strain has the potential as a candidate strain of compost microorganisms.