Effects of Grass Planting and Soil Conditioner on Acidified Orchard Soil Properties and Pear Yield and Quality

Sun Tao; Guo Bing; Guan Xilin; Yao Li; Zhao Zichao; Zhang Yufeng; Li Yan; Gao Xinhao

doi:10.14083/j.issn.1001-4942.2025.02.013

Abstract：Soil conditioner application and grass planting in acidified orchards are effective measures to improve soil quality and enhance fruit yield and quality.The 2-year field experiment was conducted in acidified Qiuyue pear orchards in the Jiaodong Peninsula by setting four treatments including farmer accustomed fertili-zation(CK),farmer accustomed fertilization+1 500 kg/hm2 silicon-calcium-potassium-magnesium fertilizer(soil conditioner)(T1),farmer accustomed fertilization+grass planting(T2),and farmer accustomed fertili-zation+soil conditioner+grass planting(T3).Their effects on soil quality,and fruit yield and quality of Qi-uyue pear in the acidified orchard were studied.The results showed that the application of soil conditioner and grass planting significantly improved the soil environment in acidified pear orchards.Compared with CK,the soil pH value in 0～20-cm layer increased by 0.60,0.56 and 0.81 units,and the soil organic matter content increased by 12.34％,12.94％and 26.65％in T1,T2 and T3 treatments,respectively;the activity of soil en-zymes such as urease,peroxidase,β-glucosidase and phosphatase were also increased.The application of soil conditioner or grass planting had no significant effect on Qiuyue pear fruit yield,but significantly improved the fruit quality.T3 treatment had significant effects on fruit yield and quality,and soil quality.Compared with CK,T3 treatment increased the fruit yield by 12.15％and 7.22％in 2022 and 2023,respectively,and signifi-cantly increased soluble sugar and vitamin C contents in Qiuyue pear fruits.In conclusion,the application of soil conditioner combined with grass planting in acidified orchards could significantly increase the fruit yield and quality of Qiuyue pear,and significantly improve the soil quality.