Effects of Different Kinds of Organic Fertilizer on Yield and Quality of Grape and Soil Nutrition
An experiment was performed to investigate the effects of 4 kinds of organic fertilizers ( bird manure, pig manure, cake fertilizer, commercial organic fertilizer) at 3 dosages on the yield and quality of seedless grape “Summer black” in order to provide reliable basis for the scientific fertilization of vineyard.The results showed that the single-grain weight and yield per unit area of grape were relatively low in the treatment of bird manure application, and those in the treatment of pig manure or commercial organic fertilizer application were slightly low.In the treatment of applying standard quantity of cake fertilizer ( 1566 kg/hm2 cake fertilizer, 135 kg/hm2 potassium sulphate, and 396 kg/hm2 superphosphate) , the single-grain weight, cluster weight and yield per unit area of grape were significantly higher than those in other treatments;the content of soluble sugar in the fruits reached 15.1%, and the ratio of soluble sugar to titrable acid was 78.1, which were significantly different from those in other treatments.The appli-cation of pig manure generally could obtain higher fruit yield, but the ratio of soluble sugar to titrable acid as well as the commodity of fruits in this treatment were significantly lower than those in other treatments.Applying commercial organic fertilizer was low in cost, and easy in operation, but its economic benefit was not the highest.As for the earnings of grape production, cake fertilizer ap-plication was the best, followed by the application of commercial organic fertilizer and pig manure, while bird manure application was not suitable.So applying standard quantity of cake fertilizer as base fertilizer could obtain higher fruit yield and better fruit qual-ity, and could be energetically popularized in grape production in southern China.