Effects of different combinations of sand and soil on soil physicochemical properties and the growth,yield and quality of tomato

YANG Shimei; WANG Shiyu; WANG Cuili; CHEN Liang; KOU Yanyan

doi:10.16861/j.cnki.zggc.2025.0059

Abstract：To explore the improvement effect of desert yellow sand on the cultivation soil of facility vegetables in the Hexi Corridor,by adding different proportions of desert yellow sand to the facility soil,the influence of the change in the proportion of yellow sand on the physical and chemical properties of the soil,as well as the growth,yield and quality of tomato were studied.The results showed that the ratio of sand addition was inversely proportional to the content of soil organic matter,total nitrogen,alkali-hydrolyzable nitrogen,total phosphorus,available phosphorus,total potassium,avail-able potassium,EC value,and pH.When the ratio of soil to sand is 3∶1,the content of total nitrogen,total phosphorus,total potassium,decreased by 17.85％,16.4％,12.21％compared with soil culture,respectively,the EC value and pH decreased by 6.27％,0.31,and the ventilation porosity increased by 5.79 percent point.Tomato plant growth,yield and quality indicators showed positive growth first and then negative growth with the increase of proportion of sand.When the ratio of soil to sand is 3∶1,the plant height and stem diameter of tomato plants are increased by 4.45％5.49％,the single fruit mass,single plant yield and 667 m2 yield are increased by 9.20％,20.40％and 17.39％,respectively,the content of soluble sugar,soluble protein,vitamin C and soluble solids in fruits are higher than that in other treatments,and the con-tent of soluble solids was significantly increased by 0.09 percent points compared with soil cultivation.The tomato growth index,yield index,and quality index are optimal when the ratio of soil to sand is 3∶1.The correlation analysis shows that the changes of soil physicochemical properties are closely related to the growth,yield and quality of tomato.The addition of sand can improve soil conditions,increase tomato yield and improve quality,which provides theoretical basis for the improvement of facility soil in this area.