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SMALL-SCALE SPATIAL CROSS-CORRELATION BETWEEN RAMET POPULATION VARIABLES OF POTENTILLA REPTANSVAR.SERICOPHYLLA AND SOIL AVAILABLE PHOSPHORUS Effects of regulated deficit irrigation on soil phosphorus nutrients in spring wheat field Effect of land use type on profile distribution of glomalin Dissolution characteristics of phosphate rocks in latosols withdifferent parent materials in rubber plantations Effect of Introducing Biennial Legume Species,Melilotus officinalis,on Plant Community in the Early Stage of Vegetation Succession and Soil Nutrients in the Semiarid Loess Plateau of China Spontaneous determination of soil available phosphorus using highspectrum in the Northwest Plain of Shandong Province Variation of Forest Soil Nutrient Content in Mountainous Areas, Beijing