EFFECTS OF BIOCIDAL TREATMENTS ON METABOLISM IN SOIL .5. METHOD FOR MEASURING SOIL BIOMASS
EFFECTS OF BIOCIDAL TREATMENTS ON METABOLISM IN SOIL .5. METHOD FOR MEASURING SOIL BIOMASS
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DOI：
10.1016/0038-0717(76)90005-5
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发表时间：
1976-01-01
影响因子：
9.7
通讯作者：
POWLSON, DS
中科院分区：
文献类型：
--
作者：
JENKINSON, DS;POWLSON, DS
描述了一种测定土壤中生物量的新方法。用 CHCl3 蒸气熏蒸土壤，除去 CHCl3，然后培育土壤。生物量是根据熏蒸和未熏蒸土壤孵化过程中释放的二氧化碳量之间的差异计算的。该方法在长期田间实验的 9 种土壤上进行了测试。 Broadbalk连续小麦试验样地表层23厘米土壤的生物量C ha-1 量为530千克（未施肥的样地）、590（施用无机肥的样地）和1160（施用农家肥的样地）。休耕一年的土壤所含的生物量比种植作物的土壤要少。钙质林地土壤含有 1960 千克生物量 C ha-1，永久草下的未施肥土壤含有 2020 年。耕地土壤的生物量中含有约 2% 的有机碳；未开垦的土壤略多一些——约3%。
A new method for the determination of biomass in soil is described. Soil is fumigated with CHCl3 vapor, the CHCl3 is removed and the soil is then incubated. The biomass is calculated from the difference between the amounts of CO2 evolved during incubation by fumigated and unfumigated soil. The method was tested on a set of 9 soils from long-term field experiments. The amounts of biomass C ha-1 in the top 23 cm of soil from plots on the Broadbalk continuous wheat experiment were 530 kg (unmanured plot), 590 (plot receiving inorganic fertilizers) and 1160 (plot receiving farmyard manure). Soils that had been fallowed for 1 yr contained less biomass than soils carrying a crop. A calcareous woodland soil contained 1960 kg biomass C ha-1, and an unmanured soil under permanent grass 2020. The arable soils contained about 2% of their organic C in the biomass; uncultivated soils a little more-about 3%.