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用多相分类的方法对2株生物聚合物合成菌进行了鉴定,通过形态学、生理生化和16S rDNA系统进化分析,鉴定菌株N3为泛菌属,菌株TP3为鞘氨醇单胞菌属。N3和TP3合成的生物聚合物具有协效增粘性,将这两种菌剂混合喷洒在沙土表面,能够形成致密的结皮,从而显著提高沙土的持水能力;试验第15天,N3和TP3混合处理组的含水量为2.1%,是对照的10.5倍,是N3和TP3单独处理组含水量的3倍和1.6倍。这种由混合菌剂形成的结皮不会影响种子的萌发,且能增加幼苗的成活率。
Two biopolymer synthetic bacteria were identified by heterogeneous classification. The morphological, physiological, biochemical and phylogenetic analysis of 16S rDNA showed that strain N3 was Pantoea and strain TP3 was Sphingomonas. N3 and TP3 synthetic biopolymer synergistic viscosity increase, the two agents mixed sprayed on the surface of the sand, to form a dense crust, thereby significantly increasing the water holding capacity of sand; test day 15, N3 and TP3 The water content of the mixed treatment group was 2.1%, which was 10.5 times that of the control, which was 3 times and 1.6 times of the water content of the N3 and TP3 treated groups respectively. This crust formed by the mixed agent does not affect the seed germination, and can increase the survival rate of seedlings.