Effect of microbial inoculants on improvement of Pisha sandstone soil
WANG Tao1, DENG Lin1, HE Lin-yan2, YANG Cai-qian1, LIANG Zhi-shui1
1. School of Civil Engineering, Southeast University, Nanjing 211189, China;
2. Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China
In order to study the effect of microbial inoculants on improving the soil properties of Pisha sandstone soil, four single liquid microbial agents and one compound microbial agent CB were prepared from the plant growth-promoting bacteria Bacillus halotolerans P75, Sinorhizobium meliloti D10, Bacillusmegaterium H3and Bacillus subtilis HB01, which were inoculated into Pisha sandstone soil at a volume-mass ratio of 5% respectively. The greenhouse pot experiments of planting Alfalfa (Medicogo sativa L.) and Caragana (Caragana korshinskii kom.) were conducted to evaluate the effects of the microbial agents on the Pisha sandstone soil quality and the growth of Alfalfa and Caragana. The results showed that the inoculated treatments could significantly increase Alfalfa biomass by 18.6%~45.6% and Caragana biomass by 24.1%~46.7% compared with the non-inoculated control group. Some bacterial treatments also could reduce soil pH, increase the contents of organic matter, ammonium nitrogen, nitrate nitrogen, available phosphorus and available potassium in soil, and improve water stability of soil aggregates. The compound bacterial agent could be more efficiently used for plant growth and the quality improvement of Pisha sandstone soil.
王涛, 邓琳, 何琳燕, 杨才千, 梁止水. 微生物菌剂对砒砂岩土壤的改良作用[J]. 中国环境科学, 2020, 40(2): 764-770.
WANG Tao, DENG Lin, HE Lin-yan, YANG Cai-qian, LIANG Zhi-shui. Effect of microbial inoculants on improvement of Pisha sandstone soil. CHINA ENVIRONMENTAL SCIENCECE, 2020, 40(2): 764-770.
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