Abstract:

In order to investigate the quality status of farmland of Dunhua City, we selected soil samples in Dunhua city from 2006 to 2009 and measured physical and chemical properties. The results show that there are 9.81 million hm2 cultivated land in Dunhua City now, divided into eight grades. High-yield field (the first grade field and the second grade field) accounted for 25.68%, medium-yield field (the third field, the fourth and the fifth field) accounted for 68.72%, and low-yield field (the sixth field, the seventh field and the eighth field) accounted for 6.1%. Comparing with those the soil from the second soil survey, the proportion of high-yield field and medium-low yield field increased, and low-yield field decreased.