Characteristics of Nutrient Accumulation for Spring Maize under Different Cultivation and Nitrogen Fertilizer Treatments

To study the characteristic of nitrogen,phosphorous,potassium accumulation and difference of nutrient accumulation between nitrogen levels in spring maize under two cultivation patterns with different nitrogen application treatments.The results showed that nitrogen fertilizer application increased significantly grain yield.The increase of harvest ear number contributed mainly to high yield.The nitrogen,phosphorous,potassium accumulations of straw and grain in maize were increased significantly with few variations between treatments,at the average of 5.1%.High yield cultivation pattern improved nitrogen accumulation of plant and the nitrogen recovery efficiency was increased 15.0%30.5% compared with that of traditional cultivation pattern.