Effects of Potato Onion Accompaniment on Fruit Quality and Rhizosphere Soil Nutrients of Tomato
The paper aims to investigate the effects of potato onion on tomato fruit quality and soil nutrients.Using'Dongnong 708'tomato as the experimental material,a pot experiment was conducted,with two treatments of monoculture tomato and potato onion associated tomato.Rhizosphere soil samples at 20,30,40 and 100 days after sowing were collected,and the quality of the first and second ear fruits of tomatoes after fruit ripening was analyzed.The results showed that the content of vitamin C,soluble sugar,sugar acid ratio,soluble protein,and lycopene in the accompanying tomato fruits of potato onions was significantly higher than that of monoculture tomatoes.The titratable acid content of tomato fruits was significantly lower than that of monoculture tomatoes,and the nutritional quality of the first ear fruit was better than that of the second ear fruit,while the taste quality of the second ear fruit was also better than that of the first ear fruit.The pH,EC,available phosphorus,available potassium,acid hydrolyzed phosphorus,acid hydrolyzed nitrogen,and organic matter concentration in the rhizosphere soil of tomato associated with potato onion were significantly higher than those of monoculture treatment,while the content of nitrate nitrogen and ammonium nitrogen was significantly lower than that of monoculture treatment.In summary,potato onions can increase the activity of soil nutrients,promote nutrient absorption by tomatoes,providing sufficient nutrient foundation for tomato growth,and thus improve tomato quality.
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