Effect of potassium fertilization on the photosynthetic characteristics of the leaf of winter wheat population during its grain filling stage Studies the Effects of Nitrogen, Phosphate, Potassium Fertilizer and Clipping Frequency on the Yield of Russian Wildrye Grass Effect of fertilization combinations of nitrogen, phosphorus, and potassium on yield and quality of flowers of Chrysanthemum indicum Substituting effect of crop residues for potassium fertilizer in rice-rapeseed rotation system Effects of different potassium fertilizers on production, quality and storability of Fuji apple Effects of Sub-low Temperature and Potassium Fertilizer on Photosynthesis and Fruit Quality of Greenhouse Tomato Effects of Potassium Fertilizer Rate on Biomass accumulation and Grain Yield of Yongyou Japonica/indica Hybrids Series Effect of K application method on K absorption and yield of sweet potato Effects of different fertilization ways on the contents of N, P, K in new shoots and photobiological characters of tea tree. Effect of Potassium Fertilizer Application on Fruit Quality and Vegetative Growth of Flat Peach Effects of Straw-Returning Instead of Chemical Potassium Application on Oil Accumulation in Cottonseed Embryo in Wheat-Cotton Rotation System Effcts of different application measures of potassium fertilizer by topping on potassium contents in flue-cured tobacco plants in Yunnan Province Studies on the techniques of promoting the quality of agricultural products and reducing the pollution of nitrate by applying fertilizers Effects of applying potassium fertilizer at peak bolling stage on cotton photosynthetic characteristics and its yield and quality under different population Research on Application of Potasslum Fertillzer for Jobi Effect of different types of potassium fertilizer on growth, cell protective enzymes and endogenous hormones of Flowering Chinese Cabbage Effect of potassium fertilizer application on the potassium and its equilibrium in tea-grown soils Effects of combined top application of inorganic nitrogen and potassium on the yield and quality of overwintering tomato in greenhouse Effects of water-nitrogen management patterns and phosphorus and potassium fertilizer combined application on grain yield and quality of hybrid rice Gangyou 725 in rapeseed (wheat)-rice planting area of Chengdu plain Effects of application of potassium fertilizer and straw on crop yields and soil potassium balance in low-yielding fields Effects of potassium fertilizer and potassium use efficiency on early-, mid- and late-season rice in Hubei province, China Effect of potassium fertilizer and plastic film mulching on growth and size inequality in Lilium davidii var. unicolor Effects of water and fertilizers on nitrate content in tomato fruits under alternate partial root-zone irrigation Effects of potassium fertilization on photosynthetic characteristicsand yield of cucumber in solar greenhouse Effects of long-term potassium application and wheat straw return to cinnamon soil on wheat yields and soil potassium balance in Shanxi Effects of potassium fertilization on fodder yield and root system of Avena sativa cv. Qingyin No.1 Effects of different types and rates of potassium fertilizer on yield and quality of cauliflower Effects of potassium on sugar, vitamin C, nitrate contents and their relevant enzymes of cucumber in solar-greenhouse Effect of modified lignin slow-releasing function on potassium fertilizer and potassium uptake by crops Research to structure characteristics and is accreting efficiency of modified potassium fertilizers