有机无机肥配施对番茄产量和品质的影响

以番茄为试材,研究了有机肥与无机肥不同配比施用对露地番茄产量、营养品质和安全品质的影响。结果表明,在施氮量相同条件下,有机肥与无机肥配施可以提高番茄产量,以6∶4配施比例产量较高。施用无机肥处理的番茄果实可溶性糖和可溶性酸含量较高,施用有机肥处理的VC含量最高且番茄果实的营养品质和口感最佳。施用有机肥处理番茄果实硝酸盐含量明显低于无机肥和有机无机肥配施处理,亚硝酸盐含量则以无机肥和高无机肥配施量处理的含量较低。各试验处理番茄果实硝酸盐和亚硝酸盐含量均远低于蔬菜和食品中污染物限量的国家标准。

Effects of Combined Application of Organic and Inorganic Fertilizer on Yield and Quality of Tomato

The field experiment was carried out to study the application effects of different combinations of organic fertilizer and chemical fertilizer on the tomato yield,nutritional quality and safety quality.The results indicated that the application of chemical fertilizer combined with organic fertilizer increased the tomato yield under the condition of the same nitrogen rate.And the yield of the treatment with the combining rate of organic fertilizer and chemical fertilizer as 6∶4 was higher.The soluble sugar and acid contents were increased in tomato fruits fertilized with chemical fertilizer,while the vitamin C content in the fruits was the highest in the treatment of organic fertilizer.The fruit taste and nutritional quality were also the best in the organic-fertilizer treatment.The nitrate concentration in tomato fruits was significantly lower when treated with organic fertilizer compared to the treatments of chemical fertilizer and chemical fertilizer combined with organic fertilizer.But the nitrite concentration in fruits was comparatively lower in the treatments of chemical fertilizer and organic fertilizer combined with high-rate chemical fertilizer.However,the nitrate and nitrite concentrations in tomato fruits of all the experiment treatments were significantly lower than the Chinese standard.