Effects of Saline Soil Characteristics on Plant Growth Environment in Cultivated Depth of the Yellow River Delta

This study combines the soil salinity determination, pH determination, ion content determination, particle size distribution (PSD), X-ray diffraction and Mercury intrusion Porosimetry (MIP) were used to quantitatively analyze the characteristics of saline-alkali soil within the cultivation depth of the Yellow River Delta, to explore the influence of the characteristics of saline-alkali soil in the coastal area on the plant growth environment. The results showed that the salinity content of surface saline-alkali soil in the Yellow River Delta was as high as 11.39 g/kg, which was 10 times higher than that of normal soil. The extremely high salinity affected plant growth through direct and indirect salinity damage. Soil pH, ion content, soil texture and mineral composition all affect plant growth. In the coastal saline-alkali soil of the Yellow River Delta, 98% of pores are inactive pores and capillary pores with a pore size of 0.1 to 10 and the pore distribution is regular. The study on the characteristics of saline-alkali soil in the Yellow River Delta can analyze the effects of saline-alkali soil on plant growth environment from physical, chemical and microscopic properties, and is of great significance to the treatment of saline-alkali soil in coastal areas.