Research on the temporal and spatial variation characteristics of Aeolian sandy nutrient in Jilin province

To explore the variation characteristics of soil organic matter and N, P, K of the typical Aeolian sandy in the western of Jilin province, with the second soil survey as the background, we determined the organic matter and N, P, K of the samples in Lishu county, Shuangliao city and Changling county in 2011. The results showed that besides the Sikeshu Township in Lishu, growth changing rate of soil organic matter in the remaining five points increased. Applied manure is an important factor to improve soil organic matter.Compared with 1982, the average content of N, P and K respectively increased by 43.4%, 543.4% and 165.3% in 2011. The increase amplitude of N was lower than the increase amplitude of P and K. Increasing fertilizer significantly increased the content of soil available nutrients. The fertilization technology and management measures were the main factors which affected the changes of soil organic matter and N, P, K content.