Investigation and Research on the Soil Nutrient in the Apple-pear Orchard

In order to fully understand and grasp the overall situation of soil nutrient of apple-pear orchand in Yanbian area,realize scientific and reasonable fertilization in apple-pear orchards,the investigation and analysis on soil nutrient of apple-pear orchards in Yanbian area were conducted.The results showed that the average pH of Yanbian's apple-pear orchards was 5.03±0.10,the soil organic matter,the total nitrogen,the total phosphorus,the total kalium content were 14.71±0.87 g·kg-1,0.64±0.02 g·kg-1,0.35±0.03 g·kg-1,32.48±1.15 g·kg-1,respectively.The average value of the content of hydrolysable nitrogen,the available phosphorus,the available kalium were 91.94±4.52 mg·kg-1,35.25±2.15 mg·kg-1,129.82±7.43 mg·kg-1,respectively.The correlation analysis on the soil nutrient of apple-pear orchards indicated that the total nitrogen,the hydrolysable nitrogen,the available phosphorus and the available kalium showed the significant or very significant positive correlation with the soil organic matter.From the view of the overall level of nutrient,the overall level of nutrients decreased.So,it should be paid attention to fertilizer in the orchard management of apple-pear in Yanbian area,especially to the application of organic fertilizer.