Effects of dicyandiamide on nitrogen loss from cucumber planting soil in intensive greenhouse under different irrigation and nitrogen conditions Effects of applying controlled-release fertilizer blended with conventional nitrogen fertilizer on Chinese cabbage yield and quality as well as nitrogen losses. Genotypic Variation in Ammonia Volatilization Rate of Rice Shoots and Its Relationship with Nitrogen Use Efficiency Nitrogen cycling and balance in agricultural ecosystem in piedmont plain of Taihang Mountains