Effects of Compound Microbial Fertilizers Instead of Conventional Base Fertilizers on Yield and Quality of Protected Tomatoes

YIN Xinxin; LI Ting; WANG Yue; YUAN Shengjun; YANG Mingyu; HAO Xiaojian

doi:10.19590/j.cnki.1008-1038.2025.01.010

Abstract：In order to explore the substitution effect of compound microbial fertilizer on tomato conventional base fertilizer and screen suitable compound microbial fertilizer varieties,'Jingcai 8'tomato was used as the test object,and four treatments were set up:common commodity organic fertilizer(CK1),common commodity organic fertilizer+conventional compound fertilizer(CK2),common commodity organic fertilizer+compound microbial fertilizer 1(N∶P2O5∶K2O=12∶0∶3)(T1),common commodity organic fertilizer+compound microbial fertilizer 2(N∶P2O5∶K2O=15∶5∶5)(T2).The plant height,leaf expansion and stem diameter of tomato plants were measured at seedling stage,flowering stage and fruit setting stage.The fruit number,yield and quality(soluble sugar,titratable acid,sugar-acid ratio,VC and lycopene content)of tomato first and second panicles were calculated at fruit setting stage.The results showed that the compound microbial fertilizer treatment could significantly promote the growth and development of tomato plants compared with the conventional compound fertilizer treatment.The stem diameter of tomato plants treated with compound microbial fertilizer was more than 15 mm,and the plant height was slightly higher than that of the control(CK2).The color conversion rates of the first and second spikes of T2 were significantly increased by 55.7％and 26.7％,respectively,compared with the control(CK2).Compared with the control(CK2),the soluble sugar content of T1 and T2 increased by 6.2％and 15.3％,the sugar-acid ratio increased by 15.4％and 25.0％,and the VC content increased by 13.8％and 19.4％,respectively.The contents of lycopene and soluble protein in the first and second spike fruits of T2 treatment were the highest.In summary,the compound microbial fertilizer could improve the growth,development,yield and quality of tomato.The application of compound microbial fertilizer to tomato base fertilizer could not only reduce the accumulation of phosphorus and potassium in soil,but also promote the growth of tomato plants,increase tomato yield and promote fruit maturity,and improve fruit quality.The number of viable bacteria and the content of phosphorus and potassium in the treatment of compound microbial fertilizer 2 were higher,and the effect was the best.