The humification cofficient of the wheat straw determined with the nylon bag method was 12.25%.

用锦纶袋法麦秸秆在潮土中的腐殖化数为12.25%。

The wastewater of hexanolactam (nylon) fiber production in Shijiazhuang Synthetic Fiber manufactory is high concentrated with organic nitrogen compounds.

己内酰胺锦纶化纤废高含氮高浓度有机废。