Effects of different fertilization methods on eggplant growth and soil characteristics in river valley area

WANG Wei; HOU Lili; WANG Qingfeng; WANG Liye; Patiman

doi:10.16861/j.cnki.zggc.2024.0663

Abstract：In order to investigate the effects of different biological fertilizer application methods on the growth,yield,quality,and soil characteristics of eggplant in river valley area,Shengyuan 3 was used as the test material.Six different field experiments were conducted in 2023,including single application of chemical fertilizer(CK),conventional fertiliza-tion(Tl),chemical fertilizer+microbial fertilizer(T2),conventional fertilization+microbial fertilizer(T3),chemical fertil-izer+humic acid liquid fertilizer+microbial fertilizer(T4),and conventional fertilization+microbial fertilizer+humic acid liquid fertilizer(T5).The changes in eggplant yield,quality and soil characteristics after harvest were analyzed.The results showed that the application of microbial fertilizer could promote the growth of eggplant plants and increase the leaf area per plant.Compared to the application of chemical fertilizer alone,T5 treatment had a significant effects on egg-plant plant height,stem thickness,leaf area,and yield,increasing significantly by 13.5％,13.6％,60.6％,and 25.0％,respectively.The application of humic acid liquid fertilizer significantly increased the soluble sugar content and crude protein content of eggplant.The T4 treatment increased significantly the soluble sugar content by 23.2％compared to the control,and the T5 treatment increased significantly the content by 25.4％compared to the control.The application of humic acid liquid fertilizer increased the total nitrogen,total phosphorus,and organic matter content of the soil,but the change in total potassium content was not significant.Compared to the control,under T3 treatment,urease,acid phospha-tase,and sucrase in the soil showed the highest enzyme activity,which increased significantly by 30.3％,18.7％,and 58.2％,respectively.The research results provide a theoretical basis for the high quality and efficient production of egg-plant and the optimization of fertilization plans in river valley area.