Effect of tomato residues in-situ anaerobic return on soil physicochemi-cal properties
To solve the problem of agricultural non-point source pollution caused by improper treatment of facility vegeta-ble waste in the production process of environmental protection and low-cost treatment,a large sample of tomato waste was treated with in-situ anaerobic return(TRR)and no return(CK)using facility tomato waste as external carbon.The effects of TRR and CK on soil pH,conductivity,organic matter,available phosphorus,available potassium,and alkaline nitrogen content during the early stage of returning to the field,the end stage of returning to the field,and the fruit ripen-ing stage were analyzed.The results showed that compared with CK,TRR treatment had no significant effect on soil avail-able phosphorus content,but significantly increased soil conductivity,organic matter,available potassium,and alkaline nitrogen content during fruit ripening by 15.47％,21.80％,25.63％,and 18.54％,respectively.In TRR treatment,the soil pH first increased and then decreased during the early stage,end stage,and fruit ripening stage of the in-situ anaerobic return of tomato waste,and the change in available phosphorus content was not significant.Compared with the early stage of in-situ anaerobic return of tomato waste,the soil organic matter,available potassium,alkaline nitrogen content,and electrical conductivity during fruit ripening were significantly increased by 25.88％,47.86％,23.70％,and 12.90％,respec-tively.In summary,the results indicated that the complete in-situ anaerobic return of tomato waste can increase soil organ-ic matter and available nutrient content,have a positive effect on soil physicochemical properties,and is an environmentally friendly treatment measure.
万方数据
维普
