Effects Of Vermicompost On Phenolic Acids,Enzyme Activity And Tomato Yield In Soil

Due to the contradiction between vegetable yield and cultivated land area,continuous cultivation has become an important cultivation method to increase vegetable yield.The soil environment deterioration caused by vegetable continuous cropping,the growth and development of tomato is hindered,and the yield and quality are reduced.Therefore,overcoming the continuous cropping obstacles has become an urgent problem to be solved in facility tomato production.Vermicompost can increase soil p H,significantly increase the activities of catalase,invertase,urease,acidity and alkaline phosphatase in the soil,effectively increase the diversity of microbial communities and improve the soil structure.However,there are few reports about the effect of vermicompost on the regulation of phenolic acids in facility soil.In this paper,continuous cropping soil was used as the test material,with no fertilization(CK),chemical fertilizer(CF),straw(S)and cow dung(CM)as controls,the physical and chemical properties of soil feces(VM)on soil,soil enzyme activity,soil medium and foreign were studied Content of source phenolic acid and its effect on tomato growth and development,yield and qualityThe main findings are as follows:(1)Vermicompost can promote the growth and development of tomatoes and improve the yield and quality of tomatoes.After 105 days of tomato colonization,the plant height,stem thickness and chlorophyll content of the tomato plants treated with vermicompost were higher than those of other treatments;vermicompost increased the yield of tomato,and vermicompost treatment compared with the control,straw,chemical fertilizer and cattle manure.Plant yields were increased by 1.47,1.54,1.14,and 1.10 times,respectively;vermicompost improved tomato quality,increased vitamin C and soluble solids content in tomato fruits,and reduced nitrate content.(2)Vermicompost,cow dung,straw and chemical fertilizer can all increase the nutrient content in the soil.The contents of soil organic matter,ammonium nitrogen,available potassium and available phosphorus were increased by vermicompost treatment,and is superior to other treatments in increasing soil p H and reducing EC values.(3)Compared with other treatments,vermicompost can increase the activities of urease,catalase,sucrase,acid phosphatase and polyphenol oxidase in the soil.During the whole growth period of tomato,the urease and Catalase,sucrase,acid phosphatase and polyphenol oxidase have the highest enzymatic activity in the treatment of vermicompost.Compared with the control,fertilizer,straw,and cow dung treatment,the urease activity in the soil increased by 12.57%,11.28%,9.07%,and 1.53%,respectively,compared with the control,chemical fertilizer,straw,and cow dung treatment.5.97%,10.08%,18.00%,10.83%,the acid phosphatase activity in the soil increased by 8.03%,10.37%,19.01%,and 4.63%,compared with straw,control,cattle Manure and chemical fertilizer were 4.24%,9.82%,11.29%,16.59% higher,and the activity of polyphenol oxidase in the order of vermicompost> chemical fertilizer> control> straw> cow manure.(4)Compared with other places,vermicompost can reduce the content of p-hydroxybenzoic acid and ferulic acid in the soil.After 105 days of tomato colonization,the content of p-hydroxybenzoic acid in the soil treated with vermicompost decreased 36.38% and 25.61% compared to the control and fertilizer treatments,and the ferulic acid content in the soil decreased by 30.89% and 24.79%.In summary,vermicompost can promote the growth and development of tomato,improve the yield and quality of tomato,improve soil quality,increase the enzyme activity in the soil,reduce the content of phenolic acids in the soil,vermicompost can replace chemical fertilizers,and can be used for continuous tomato planting.The soil has an improvement effect.