Crop Yield and Soil Fertility as Influenced by Nutrient Management in Rainfed Inner Mongolia

摘要

Traditional nutrient management within the rainfed regions of Inner Mongolia usually results in poor crop productivity. In this study, six successive crop seasons found N, P, and K fertilizer to be responsible for a range of crop yield increases between 5 and 50%. The combined use of recommended NPK rates with manures sustained crop yields and improved soil fertility, but caution must be exercised to avoid the overuse of P and, in turn, the over accumulation of P in soil.