Characteristics analysis of micro-element contents in western Erdos soil and in Tetraena mongolica plant A New Artificial Rearing Method for Apocheima cinerarius Effects of zinc manganese and boron on artemisinin andyields of Artemisia annua Influence of iron plaque on Cd,  Mn,  Cu and Zn uptakes of rice seedlings under different Cd treatments Distribution of soil medium- and micro-elements in Fujian tobacco-growing soils Relationships between plant stoichiometry and biomass in an arid-hot valley, Southwest China Effects of molybdenum,boron,manganese and zinc on quality of cultured Glycyrrhiza uralensis Fisch Effects of long-term fertilization on availability of micro-elements in vegetable soil