Abstract:

In order to understand the current situation of soil fertility in different areas of the low mountain and hilly areas in central Zhejiang, 780 soil samples were collected in Yongkang City. The fertility indicators such as soil pH value, contents of organic matter, total nitrogen, available phosphorus and available potassium in the overall and different areas were analyzed. The results showed that the cultivated land soil in Yongkang City had a significant acidification tendency, mainly acidic and slightly acidic overall. The contents of organic matter and total nitrogen were generally reasonable. The polarization phenomenon of available phosphorus was relatively obvious, and the available phosphorus content at only 12.56% of the sites was relatively appropriate. The overall content of available potassium was relatively low, and the available potassium content at 71.03% of the sites was lower than 120 mg·kg^-1. Overall, as a typical sample of soil in the low and hilly areas of central Zhejiang Province, the soil fertility in different regions of Yongkang City varied significantly, the content of soil fertility indicators was unbalanced, and the tendency of soil acidification was relatively serious. Therefore, it is necessary to fully implement measures such as soil testing and formula fertilization in the low mountain and hilly areas of central Zhejiang, so as to balance the soil fertility level, improve the quality of cultivated land, and prevent the aggravation of soil acidification.

Key words: central Zhejiang, soil fertility, soil acidification, quality of cultivated land