有机—无机肥料配施培肥砂姜黑土研究

通过多年田间小区定位试验研究有机—无机肥料配合施用培肥淮北平原砂姜黑土的效果。结果表明 ,有机—无机肥料配施可有效提高土壤有机质、全量氮磷养分和速效氮磷钾含量 ,土壤养分投入略大于支出 ,氮磷钾养分盈余 ,肥力稳步提高 ,为作物高产打下了地力基础

Study on the Combined Application of Organic and Chemical Fertilizer for the Improvement of Shajiang Black Soil

The effect of crombined application of organic and chemical fertilizer on improving shajiang black soil in Huaibei Plain was conducted through the field plot trial in fixed position for marry years.The results showed that the combined application of organic and chemical fertilizer could efficiently improve the content of organic matter,total nitrogen、phosphorus、and potassium and available N,P and K in soil.The input of soil nutrient was slightly higher than output,the nutrient of nirtogen,phosohorus and potassium was surplus,and soil fertility improved steadily.It set up the basis for the high yield of crops.