关键词: 百合, 百合, 引种, 筛选, 组培快繁

Abstract: The nutrients of soil and leaves in pear orchards in the major pear production regions of Shanxi Province was analyzed to provide scientific reference for reasonable fertilization of pear orchards. The nutrient element contents of soil and leaves by 59 pear orchards in Shanxi province were determined, and the correlation between them was analyzed. The soil pH was slightly higher than suitable standard values and organic matter content was generally low in most pear orchards in Shanxi Province. Soil available phosphorus, available potassium and available manganese content were relatively appropriate and available iron was lower in most pear orchards. The total nitrogen and available copper content in the soil below the suitable standard values were at the rate of 50%. Soil available zinc content was relatively low in some pear orchards. The leaf of most pear orchards were rich in nitrogen, iron and manganese, relatively suitable for phosphorus and copper, and deficient in potassium and zinc. There were positive and negative correlations between the contents of nitrogen, phosphorus, potassium, iron, manganese, copper and zinc in leaves and the corresponding elements in soil of pear orchards, but the it was not significant. The application of organic fertilizer should increase in the main pear producing areas, and formulated fertilization should be mainly based on leaf nutrients diagnosis and supplemented by soil nutrients determination.