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An Ecological study on earthworm in farmland of salinity transforming area in north China plain EFFECTS OF MICROORGANISMS IN SYNCHRONIZATION WITH EARTHWORMS ON THE FERTILITIES OF SOIL Effect of earthworms on the photosynthetic characteristics of wetland plants and their capacity to purify wastewater The Effects of Earthworms and Effective Microorganisms on the Adsorption-desorption of Cadmium in Orchard Soils and Cadmium Accumulation in Apple Comparative study of different earthworm sampling methods Efficiencies of earthworms(Eisenia foetida) decomposing forest litters The Effects of Earthworms and Effective Microorganisms on the Adsorption-desorption of Cadmium in Orchard Soils and Cadmium Accumulation in Apple Effect of treating with earthworm and iron on iron nutrition of apple roots Factor optimization for municipal domestic wastes treatment by earthworms and its concentration of heavy metals