Photosynthetic Characteristics of Different Wheat Cultivars and Their Offspring of Hybridization AntinociceptiVe response mechanism of tetramethylpyrazine Characteristics of microbial biomass attributes in soil dry aggregates from lands of different uses in the semi-arid area Effect of Albendazole on Acid phosphatase, glutathione S-transferase and adenosine triphosphatease activities of earthworms Physiological Response for Different Drought Resistance of Sweet Potato under Osmotic Stress