NOVELTY - A degradable agricultural rice straw fungus NJGZ-2, belongs to Penicillium oxalicum, with preservation number of CGMCC NO: 7527, is new, where the biological characteristic is up the PDA flat plate, the colony is white, the contour is regular, the appearance is floss, filamentous interleaving, has transverse septa, spore stem does not have enough cells, broom-shaped branch is symmetrical double-wheel type, the conidium is elliptic, and is blue-green.    USE - In straw degradation application (claimed).    ADVANTAGE - The degradable agricultural rice straw fungus NJGZ-2 is valuable; protects the environment; and has wide application prospect.    DETAILED DESCRIPTION - Preparing straw degradable microbial inoculum, involving (i) drying crushed 10 g rice straw powder, 3 g mono potassium phosphate (KH2PO4), 3 g sodium nutrates (NaNO3), 0.5 g calcium chloride (CaCl2), 0.5 g magnesium sulfate (MgSO4.7H2O), 0.0075 g FeSO4.7H2O, 0.0025 g MnSO4.H2O, 0.002 g zinc sulfate (ZnSO4), 0.003 g cobalt (II) chloride (CoCl2), 20 g agar, and 1000 ml water, then high-pressure sterilizing at 121 degrees C for 20 minutes, to form rice straw powder culture medium; (ii) drying crushed 20 g rice straw powder, 4 g (NH4)2SO, 2 g KH2PO4, 0.3 g MgSO4.7H2O, 0.4 g CaCl2, tryptone, 0.0075 g FeSO4.7H2O, 0.0025 g MnSO4.H2O, 0.002 g ZnSO4, 0.003 g CoCl2 and 1000 ml water, then high-pressure sterilizing at 121 degrees C for 20 minutes, to form liquid culture medium; and iii) inoculating strain NJGZ-2 into a triangular bottle of 50 ml straw culture medium standing at 30 degrees C and culturing for 7 days, adding 30 ml of sterile water to release spores on a shaker oscillation for 30 minutes, filtering by gauze culture to obtain a spore suspension, after counting by a blood counting chamber can be concentrated or diluted with sterile water so as to reach the use concentration, is generally input/output (IO) 7 spores/ml to prepare straw degradation bacterial agent; adding 1% inoculum into straw powder liquid culture medium, at 30 degrees C, rotating at 170 revolutions per minute and cultured for 6 days, centrifugally filtering to remove thalli and impurities to obtain a crude enzyme liquid; culturing for 6 hours, centrifugally filtering to remove thalli and impurities to obtain a crude enzyme liquid.