Interactive effect of N and Ca on N uptake by tomato Effect of nitrogen, phosphorus and silicon calcium fertilizer on yield and quality of pepper Effects of calcium fertilizer on yield, quality and related enzyme activities of peanut in acidic soil Effects of exogenous calcium and soil moisture at acicula forming stage of peanut on some physiological characteristics of plants Effects of calcium fertilizer application on peanut growth, physiological characteristics, yield and quality under drought stress.