Effects of Molybdenum Fertilizer Combined with Bacillus subtilis Strain on the Growth of Chinese Cabbage and the Content of Nitrate in Soil

With increasing nitrogen application in soil, the problem of nitrate accumulation soil and vegetable bodies has become increasingly serious. In this study, Bacillus subtilis (B. subtilis) Strain11 was isolated studied for its effects combination with Molybdenum (Mo) on growth Chinese cabbage content. The results showed that strain effectively increased growth, height, moisture content by 27% 2.5%, respectively, compared to control. Mo alone reduced root length, chlorophyll content, cabbage, an optimal rate 0.8–1.2 mg/kg soil. fertilizer most effective plant height length which were 1.49 times 1.68 control, respectively. proportion dry matter, average fresh weight, weight under treatment 9.01%, 5.83 g/plant, 0.53 higher than rest. At harvest, highest ammonium-nitrogen group 8.56 mg/kg, reduction reached 40.68%. conclusion, at a 0.8 mg Mo/kg B. Strain11, recommended remediation nitrate-contaminated soils.