生态环境学报Issue(10)：1581-1585,5.
石漠化地区豆科植物根瘤菌降解碳酸钙、镁能力研究
Leguminous Plants Rhizobia Degradation of Calcium Carbonate and Magnesium Carbonate
摘要
Abstract
Microorganism played an obvious role in facilitating the reaction rate of rock weathering and soil formation, in order to attain dominant rhizobium strains promoted the rock weathering and speed up the rate of soil rhizobium, the dominant rhizobium strains established the symbiotic system with leguminous plants to repair and manage the rocky desertification areas, the thesis studied on the 9 strains from leguminous plants rhizobia by the test of doing the strains in liquid medium with difficult soluble calcium carbonate or magnesium carbonate, then, handled with 28.5℃, 160 r·min-1 and 15 d table culture, sampled 2 ml of three at 0, 1, 3, 6, 10, 15 d. Samples added into the 10 mL digestive juices for a night, nitric acid and perchloric acid volume ratio was 5 to 1 of the digestive juices, heating Slowly, get clear solutions, the capacity to 10 mL by adding 2% hydrochloric acid solution which contain La3+,the same do with blank,used the flame atomic absorption method to determin contents of Ca2+ and Mg2+ in the samples parallel. We eagered to obtain the certain strains had strong degradation of calcium carbonate or magnesium carbonate. The results showed that the best calcium carbonate degradation strains wereRhizobium tropici (SWFU09) andRhizobium sp. (SWFU02), the best strains of magnesium carbonate degradation wereRhizobiumsp. (SWFU03), Rhizobium tropici(SWFU05) andBradyrhizobium sp. (SWFU01). The solution pH had an important influence on degradation of magnesium carbonate, but not obvious on calcium carbonate degradation. We could have a conclusion: acid producted by microbial metabolism had a certain influence on degradations of calcium carbonate and magnesium carbonate, but it was not the only factor. Organic ligand (base) also producted by microbial metabolism might adsorpt on calcium carbonate or magnesium carbonate surface, it could form compounds with ingredients in the water, change the balance of dissolution, Ca2+ and Mg2+were replaced.关键词
根瘤菌/降解作用/碳酸钙/碳酸镁Key words
rhizobia/degradation/calcium carbonate/magnesium carbonate分类
生物学引用本文复制引用
王明月,刘绍雄,熊智,丁雅迪,王艳玲,李克艳,阳廷丹,陶茜,王金华..石漠化地区豆科植物根瘤菌降解碳酸钙、镁能力研究[J].生态环境学报,2014,(10):1581-1585,5.基金项目
国家基金（31100007）；云南省教育厅基金 （）
