Effect of Various Mulching Durations with Plastic Film on Soil Microbial Quantity and Plant Nutrients of Spring Wheat Field in Semi-arid Loess Plateau of China The nitrogen nutrient efficiency and the expression analysis of the related genes in different allelopathic potential rice(Oryza sativa L.) varieties at seedling stage Effects of seed dressing in plant nutrient on the senescence of roots after anthesis and yield in dry land wheat on high yield Effects of irrigation with paper mill effluent on growth and nutrient status of Populus tomentosa seedlings Nourishing characteristic of geochemical elements in Antarctic mosses and lichens Mycorrhizal plasticity of plant nutrient foraging: a review of ectomycorrhizal plasticity Carbon, Nitrogen and Phosphorus Stoichiometry of Two Fern Species and Their Relationships to Nutrient Availability Plant and soil nutrient characteristics in the karst shrub ecosystem of southwest Hunan, China. EFFECT OF ORGANIC MANURE ON QUALITIES OF CROPS ION EXCHANGE RESIN AND ITS APPLICATION IN AGRICULTURAL AND ENVIRONMENTAL RESEARCH Scaling relationships and stoichiometry of plant leaf biogenic elements from the arid-hot valley of Jinsha River, China Change in abuscular mycorrhizal fungi colonization rate and nutrient content in Bt corn