Abstract:

Effects of organic-inorganic fertilizer application on yields and qualities of continually cultivated vegetables were investigated in this study. Cucumis sativus, Momordica charantia and Brassica oleracea var. capitata were selected in this experiment. There were four treatments: 100% chemical fertilizer (the conventional fertilization and as control), 80% chemical fertilizer, 60% chemical fertilizer and 20% organic manure, 40% chemical fertilizer and 40% organic manure. The results showed that there was no significant difference in the yield of cucumber, balsam pear and cabbage among different treatments. Compared with conventional 100% chemical fertilizer application, there was no significant difference in the contents of soluble sugar, protein and reduced vitamin C for the treatment of reducing 20% chemical fertilizer, but the content of nitrate content was reduced. Treatments of combined chemical and organic fertilizer significantly improved vegetable quality through increasing the contents of soluble sugar, protein, reduced vitamin C and decreasing nitrate contents compared with chemical fertilizer application alone. Organic-inorganic fertilizer application could improve vegetable quality, and the treatment of 60% of reduction of chemical fertilizer combined with 40% of organic manure had the best effect.