摘要 : The effects of soil tillage on earthworms were investigated in a 2-year study on potato fields in Switzerland. Soil separation is a tillage method used to separate stones and large soil particles from the fine earth. Earthworms we... 展开 The effects of soil tillage on earthworms were investigated in a 2-year study on potato fields in Switzerland. Soil separation is a tillage method used to separate stones and large soil particles from the fine earth. Earthworms were sampled before and twice after soil tillage with the combined method of extraction and hand sorting. Earthworm populations were initially evenly distributed at a high population level (167 g/m2, 243 individuals/m2). The abundance and biomass of earthworms were lower inthe separated than in the traditional soil treatment (rotary harrow). One year after the tillage treatment the abundance was 20% and the biomass 45% less than in the traditional treatment. Nicodrilus longus, N. caliginosus, and Allobophora rosea were most affected by soil treatments, whilst no negative effects on Lumbricus terrestris and A. chlorotica were observed. 收起