Analysis on Soil Nutrient Availability of Fuji Apple Demonstration Orchards in Baishui County in Weibei Area of Shaanxi

In order to know the soil fertility situation of Fuji apple orchards in Weibei,on the basis of a great deal of research soil samples were collected from 34 demonstration apple orchards in Baishui county Shaanxi province.The content of soil organic matter,total N,available N,P,K and available micronutrients were determined.The results showed that the percentage of orchards with soil organic matter content less than 15 g·kg-1 was 79% in all demonstration Fuji apple orchards in Baishui,according the standard of soil fertility of green-food production area,only a small part of the orchard soil organic matter reached the target level Ⅱ;the soil total N content was relatively high;the percentage of orchards with available N content more than 50 mg·kg-1 was nearly half in all apple orchards,that is suitable for apple production,the content was relatively low in the rest orchards;the available P and K contents were rich,it can meet the needs of apple production;the soil available micronutrients content were all low except Cu,so farmers should pay more attention to application of micronutrients in production.