available potassium 第1页

Spatial characteristics of soil available nutrients in the major grain-producing region of Xi’an,  China Spatial variability of soil nutrients in cultivated surface soil of Sujiatun District, Shenyang City Temporal-spatial variability of soil available phosphorus and potassium in the alluvial region of the Huang-Huai-Hai Plain Vertical distribution patterns of nitrogen, phosphorus, and potassium in Chinese pine forest soils developed from different parent materials in Songshan Mountain Nature Reserve, Beijing of China. Relationship between available K content and K input levels in fluvo-aquic soil under long term fertilization Difference of potassium absorption characters and mechanism of tobacco in genotypes. Potassium balance and pool as influenced by long-term fertilization under continuous winter wheat–summer maize cropping system in a manural loess soil Spatial-temporal variation of soil available P and K in Taihu Lake region of Jiangsu province，China Effect of potassium fertilizer application on the potassium and its equilibrium in tea-grown soils