从黄河三角洲盐碱地土壤中分离到一株异养高效硝化细菌，对该菌株外部形态、生理生化性质、16S rDNA序列、硝化能力等方面进行分析。结果表明，该菌株为革兰氏阴性菌、杆状、能以葡萄糖、蔗糖等为碳源生长，最适生长pH为9；16S rDNA基因序列分析表明，该菌株与Pseudomonas putida（D85992）的同源性达99%。根据上述结果，该菌株可鉴定为恶臭假单胞菌，并命名为Pseudomonas SKDP-1。以氨氮（NH4+-N）为惟一氮源，分别以柠檬酸钠、葡萄糖和蔗糖为碳源条件下，其氨氮转化率分别为49.5%、34%和32.8%，表明菌株Pseudomonas sp. SKDP-1在盐碱地土壤中对氮的循环方面具有良好的应用前景。
A heterotrophic nitrifying strain was isolated from Yellow River Delta saline-alkali soil, and its morphology, physiochemical properties, 16S rDNA sequence, and ammonia nitrogen degradation ability were examined. The results showed that this bacteria is rod, gram-negative, can use glucose, sucrose as carbon source for growth, and its optimum pH is 9. Its 16S rDNA sequence indicated 99% similarity with Pseudomonas putida（D85992）. Based on the above results, this strain was believed to be a member of genus Pseudomonas and named Pseudomonas sp. SKDP-1. This strain showed high ammonia nitrogen degrading abilities of 49.5%, 34% and 32.8% with sodium citrate, glucose and sucrose as its carbon sources, respectively, and suggesting SKDP-1 has a good application prospect for nitrogen cycle in saline-alkali soil.