Abstract:In order to clarify the effects of calcium, soil conditioner, and organic fertilizer and grow grass practice on quality and the incidence of blossom-end rot of ‘Youhou’ persimmon, a field experiment was conducted to investigate the impacts of fertilization measures on nutrient elements, mineral elements, amino acid content and component in the persimmon fruit by the following six treatments:no fertilizer (CK), blue calcium, Dr. calcium, blue calcium soil conditioner, Dr. calcium and soil conditioner, and organic fertilizer grow grass. Results indicated that compared with control (CK), (1) Blue calcium, Dr. calcium, blue calcium and soil conditioner, Dr. calcium and soil conditioner, and organic fertilizer and grow grass treatments can significantly improve the quality of fruits, especially organic fertilizer and grow grass was the best. For organic fertilizer and grow grass treatment, the single fruit mass, fruit firmness, protein, crude fiber, total sugar, fructose, glucose, total flavone, vitamin C, vitamin B1 and vitamin B2 increased by 16.27%,10.07%,32.14%,32.41%,35.96%,16.73%,23.12%,31.72%,17.70%,45.87% and 45.75%.(2) Dr. calcium, blue calcium and soil conditioner, Dr. calcium and soil conditioner, and organic fertilizer and grow grass treatments can effectively increase the yield of ‘Youhou’ persimmon, and yield per 667 m increased 228.2 kg,389.05 kg,500.5 kg and 695.35 kg compared with control.(3) The inhibiting effects of blossom-end rot showed that the best treatments were blue calcium and soil conditioner, Dr. calcium and soil conditioner, and the control rate reached 58.5%. We suggested that organic fertilizer and grow grass combined with appropriate calcium could be as an efficient fertilization practice to improve the quality and prevent the blossom-end rot of persimmon. |