微生物对生物降解膜降解过程影响的研究

Effect of micro-organism on the process of biodegradable film's degradation

制备微生物培养基研究地膜的降解过程 ,结果表明 ,加混合孢子悬液的降解膜降解率比未加的提高 0 .5 8%～ 0 .82 % ;加土壤悬液的降解膜降解率比未加的分别提高 1%左右。不同培养基比较 ,降解膜降解率的大小顺序为细菌培养基 >放线菌培养基 >真菌培养基。加大田土悬液的降解膜降解率最大。降解膜的降解率远高于普通膜 ,提高 3%～ 5 %。用液体培养法做检验试验的结果表明 ,混和菌有助于降解膜的降解 ;液体培养中降解膜的降解率大于固体培养 ,提高 2

Micro organism culture was carried out to study the process of films degradation.The results showed that the rate of the biodegradable films degradation added with fungi suspension was increased by 0.58%-0.82% more than that of the biodegradable film without fungi suspension.The rate of the biodegradable film added with soil suspension was increased by about 1% more than the biodegradable film without soil suspension.Compared different culture mediums,the order of rates of the biodegradable films degradation was:bacteria medium>actinomyces medium>fungi medium.The rate of the biodegradable films degradation with field soil suspension was the highest one.The rate of biodegradable film degradation was higher than plastic film,increased by 3%-5%.The results of test under liquid culture were that mixed bacterium were helpful to biodegradable films degradation;the rate of biodegradable films degradation under liquid culture was higher than that of solid culture,increased by about 2%.