Morphological and Functional Heterogeneity of Fine Roots among Three Tree Species in the Hilly Region of Central Sichuan Main Root Traits Affecting Yield Level in Conventional Indica Rice Cultivars (Oryza sativa L.) Interactive effects of phenolic acid and nitrogen on morphological traits of poplar (Populus × euramericana ‘Neva’) fine roots The Al-Tolerance Evaluation and Anatomical Characteristics of Roots in Inbred Lines of Maize Effects of P, K and Ca deficiency on the root morphology and nutrient absorption of Poncirus trifoliata seedlings Differences of foraging behavior between provenances of Pinus massoniana in heterogeneous nutrient environment Relationship between N Accumulation and Root Traits in Conventional Indica Rice Varieties (Oryza sativa L.) QTLs for Rice Root Morphological Characters Root Morphological and Physiological Characteristics of Rice Cultivars with High Yield and High Nitrogen Use Efficiency