Microbial and Enzyme Properties in Response to Amelioration of an Acidic Ultisol by Industrial and Agricultural By-Products
Alkaline slag,rice chaff and peanut straw were chosen to investigate the ameliorating effects of these industrial and agricultural by-products on soil microbial and enzyme properties in a field experiment on an acidic Ultisol.The alkaline slag was superior to rice chaff and peanut straw in correcting soil acidity and induced a larger increase in catalase activity,acid phosphatase activity and the microbial quotient,and thus depressed the metabolic quotient more,since soil acidity was an important stress factor for microbial and enzyme activities in the Ultisol.Incorporation of rice chaff and peanut straw markedly increased the soil microbial C,urease activity and basal respiration,and improved soil fertility to a greater extent,by more greatly enriching soil with organic C and the nutrients nitrogen,phosphorus and potassium,which were also significant factors affecting microorganism properties.Consequently,the application of alkaline slag and rice chafftogether was the most effective in enhancing the geometric mean of enzyme activities (an important index of soil quality),suggesting that the combined industrial and agricultural by-products together as an amendment was the better choice to improve soil quality in the Ultisol.
Soil quality Industrial by-product Agricultural by-product Enzyme activity Microbial activity Acid Ultisol
JiuyuLi Zhaodong Liu Anzhen Zhao Renkou Xu
State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,the Chinese Acade State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,the Chinese Acade
国际会议
the 16th Meeting of the International Humic Substances Society (第十六届国际腐殖物质学会大会(IHSS 16))
杭州
英文
469-471
2012-09-09（万方平台首次上网日期，不代表论文的发表时间）