Division of Crop Production and Post Harvest Technology, Indian Institute of Spices Research (IISR), P.O. Box 1701, Marikunnu P.O., Calicut 673 012, Kerala, India.
Bioresour Technol. 2010 Jun;101(12):4697-702. doi: 10.1016/j.biortech.2010.01.108. Epub 2010 Feb 18.
The study was conducted to determine whether short-term incorporation of organic manures and biofertilizers influence biochemical and microbial variables reflecting soil quality. For the study, soils were collected from a field experiment conducted on turmeric (Curcuma longa L.) involving organic nutrient management (ONM), chemical nutrient management (CNM) and integrated nutrient management (INM). The findings revealed that application of organic manures and biofertilizers (ONM and INM) positively influenced microbial biomass C, N mineralization, soil respiration and enzymes activities. Contrarily, greater metabolic quotient levels in CNM indicated a stressed soil microbial community. Principal component analysis indicated the strong relationship between microbial activity and the availability of labile and easily mineralizable organic matter. The findings imply that even short-term incorporation of organic manures and biofertilizers promoted soil microbial and enzyme activities and these parameters are sensitive enough to detect changes in soil quality due to short-term incorporation of biological fertilizers.
本研究旨在确定短期施用有机肥料和生物肥料是否会影响反映土壤质量的生化和微生物变量。为此，从一项涉及有机养分管理（ONM）、化学养分管理（CNM）和综合养分管理（INM）的姜黄（Curcuma longa L.）田间试验中采集了土壤。研究结果表明，施用有机肥料和生物肥料（ONM 和 INM）可显著影响微生物生物量 C、氮矿化、土壤呼吸和酶活性。相反，CNM 中较高的代谢商水平表明土壤微生物群落受到压力。主成分分析表明，微生物活性与可利用的易矿化有机质之间存在很强的关系。研究结果表明，即使短期施用有机肥料和生物肥料也能促进土壤微生物和酶的活性，这些参数足够敏感，可以检测由于短期施用生物肥料而导致的土壤质量变化。
