Labile organic carbon(LOC)is a fraction of soil organic carbon(SOC)with rapid turnover time and is affected by soil fertilization.This investigation characterized the SOC content,LOC content and LOC distribution in th...Labile organic carbon(LOC)is a fraction of soil organic carbon(SOC)with rapid turnover time and is affected by soil fertilization.This investigation characterized the SOC content,LOC content and LOC distribution in the treatment plots of surface soil erosion at five levels(0-,5-,10-,20-and 30-cm erosion).The soil had received contrasting fertilizer treatments(i.e.,chemical fertilizer or chemical fertilizer+manure)for 6 years.This study demonstrated that both SOC and various LOC fractions contents were higher in the plots with fertilizer+manure than in those with fertilizer alone under the same erosion conditions.The SOC and LOC contents decreased as the erosion depth increased.Light fraction organic carbon,particulate organic carbon,easily oxidizable organic carbon(KMnO4-oxydizable organic carbon),and microbial biomass carbon were 27%–57%,37%–47%,20%–25%,and 29%–33%higher respectively in the fertilizer+manure plots,than in the fertilizer alone plots.Positive correlations(p<0.05)between SOC content and different fractions contents were observed in all plots except the correlation between total SOC content and water-soluble organic carbon content in the different fertilization treatments.Obviously,fertilizer+manure treatments would be conducive to the accumulation of LOC and SOC in the Black soil of Northeast China.展开更多
The compost of cattle manure was inoculated with complex microbial agent lower than 5 ℃ to explore the application of beneficial microbial agent and maturation accelerator aiming at accelerating the process of compos...The compost of cattle manure was inoculated with complex microbial agent lower than 5 ℃ to explore the application of beneficial microbial agent and maturation accelerator aiming at accelerating the process of compostimg under the low temperature Results showed that adding the maturation accelerator accelerated the process of composting and increased the nitrogen content of composting products. Inoculating the microogannic maturation agent made the composting temperature rise quickly and the maW.ration become better.展开更多
基金Under the auspices of National Natural Science Foundation of China(No.41271313,41172229,41071171)Harbin Bureau of Science and Technology for Outstanding Scientist(No.2010FXYN044)
文摘Labile organic carbon(LOC)is a fraction of soil organic carbon(SOC)with rapid turnover time and is affected by soil fertilization.This investigation characterized the SOC content,LOC content and LOC distribution in the treatment plots of surface soil erosion at five levels(0-,5-,10-,20-and 30-cm erosion).The soil had received contrasting fertilizer treatments(i.e.,chemical fertilizer or chemical fertilizer+manure)for 6 years.This study demonstrated that both SOC and various LOC fractions contents were higher in the plots with fertilizer+manure than in those with fertilizer alone under the same erosion conditions.The SOC and LOC contents decreased as the erosion depth increased.Light fraction organic carbon,particulate organic carbon,easily oxidizable organic carbon(KMnO4-oxydizable organic carbon),and microbial biomass carbon were 27%–57%,37%–47%,20%–25%,and 29%–33%higher respectively in the fertilizer+manure plots,than in the fertilizer alone plots.Positive correlations(p<0.05)between SOC content and different fractions contents were observed in all plots except the correlation between total SOC content and water-soluble organic carbon content in the different fertilization treatments.Obviously,fertilizer+manure treatments would be conducive to the accumulation of LOC and SOC in the Black soil of Northeast China.
基金Supported by Post-doctoral Management Office of Heilongjiang Province (LBH-Z06161)Key Lab of Utilization and Protection of BlackSoil (GXS08-1)Special-fund Project of Harbin Scientific Innovation Talented Person Studies (Youth Scientific Innovation Talented Person)(2009RFQXN098)
文摘The compost of cattle manure was inoculated with complex microbial agent lower than 5 ℃ to explore the application of beneficial microbial agent and maturation accelerator aiming at accelerating the process of compostimg under the low temperature Results showed that adding the maturation accelerator accelerated the process of composting and increased the nitrogen content of composting products. Inoculating the microogannic maturation agent made the composting temperature rise quickly and the maW.ration become better.
