| To explore the variation characteristics of soil organic matter and N, P, K of chernozem soil and aeolian sandy, since the second soil survey in Lishu county of Jilin province. And to investigate the effects of two types of soil organic matter and N, P, K, since the implementation of whole straw mulching cultivation technique in 2007. Collecting the sample that is chernozem soil of Gaojia village and aeolian sandy soil of Fu Jiajie village in three consecutive years, in order to determine the organic matter and N, P, K in 2009-2011. The results showed that: The organic matter and N, P, K of chernozem soil were respectively increased by 0.35%, 36.75 mg/kg,47.03 mg/kg, 196.42 mg/kg, since the second soil survey. The organic matter of aeolian sandy soil was reduced by 0.38%, N, P, K were respectively increased by 25.34 mg/kg, 41.11 mg/kg and 88.23 mg/kg. Since the implementation of whole straw mulching cultivation technique in 2009-2011, the organic matter of chernozem soil and aeolian sandy soil were increased by 0.25% and 0.49%, and the contents of N, P, and K decreased in three years. |
