Screening of Fungi for Effective Degradation of Agricultural Film and Construction of Composite Microbiota
In order to solve the problem of difficult degradation of agricultural film in soil,strains were screened from soil and the degradation of different agricultural film materials was studied.In this study,black polyethylene(PE)film,white PE film,polyethylene and poly(butylene adipate/terephthalate)(PBAT)degradation film,poly(methyl ethyl carbonate)(PPC)degradation film and other four different materials were used to screen two strains of fungi that effectively degrade agricultural film.The strains Penicillium citrinum(JW1)and Aspergillus costaricensis(JW2)were identified.The JW1 and JW2 strains were combined,and the changes of surface micro-characteristics were observed before and after degradation.The results showed that the four kinds of biofilm materi-als showed different degrees of degradation after inoculation with JW1 and JW2 strains at the same time.30 days af-ter inoculation,the weight loss rates of PPC-degraded film,PBAT-degraded film,black PE film and transparent PE film were 23.78%,14.73%,22.78%and 17.55%,respectively.The degradation effect of PPC-degrading mulch by inoculation with composite bacteria was significantly higher than that of the other three mulches(P<0.05).In this study,fungal strains JW1 and JW2 were screened for effective degradation of agricultural film,so as to provide technical support for microbial degradation technology of agricultural film.
polyethylenePBATagricultural film degradationfungi
NETL
NSTL
万方数据
