Effect of composite pesticides on the preservation and residues of Orah fruits
To improve the preservation effect and pesticides safety of Orah during storage,various composite pesticides were used for treating the Orah fruits,treated fruits were then individually packed with plastic film.The weight loss rate,soluble solid content,good fruit rate,and pesticides residues of Orah fruits stored for different storage periods of time under(6±1)℃were determined.The results showed that the preservation effect and pesticides residues of Orah fruits treated with different composite pesticides varied during storage.Among the tested pesticides,the best preservation effect was achieved with 250 times solution of 50%imidaz-ole emulsion+3,000 times solution of 40%metformin trioctylbenzenesulfonate wettable powder+2,000 times solution of 20%oxime·tebuconazole alcohol+200 mg·L-12,4-D.After 60 days and 90 days of stor-age,the good fruit rate was 99.67%and 98.33%,respectively.Furthermore,above treatment could reduce the decrease of soluble solid content during late-time of storage(60 days after),and the residual levels of met-formin,2,4-D,and imidazole in the peel and flesh of the fruit was low,and the residual levels of fenamin-strobin,propiconazole and tebuconazole was far lower than the limited value of GB 2763-2021.
万方数据
维普
