Persimmon is native to China, and wild persimmons are distributed along the Yangtze River and southern China. Cultivation of persimmons is widely distributed in China and there are many varieties. Persimmon trees are well-developed, with deep roots and few fine roots. The main root can be as deep as 3-4 meters, and horizontal roots are generally 1.5-3 times more powerful than canopies. Since the root rind contains a large amount of tannins, the ability to heal after injury is poor, so it should be avoided when fertilizing. 1. Need for fertilizer characteristics of persimmon tree Different varieties of persimmon trees have a strong ability to adapt to the pH value of the soil and can grow well from alkaline to acidic. The newly formed branches, leaves, roots and fruits of persimmon trees contained 213.6 g of nitrogen, phosphorus and potassium, 57.6 g of phosphorus, and 183.2 g of potassium. The ratio of nitrogen, phosphorus, and potassium was about 1: 0.27:0.86. From the summation of calculations at home and abroad, for each ton of fruit produced, approximately 8.3 kg of nitrogen (N), 2.5 kg of phosphorus, and 6.7 kg of potassium are needed. The ratio of nitrogen, phosphorus, and potassium is approximately 1:0.3:0.8. This shows that persimmons have a greater demand for nitrogen. Persimmon Fertilization Technology The roots of persimmon trees are deep and Xiyang is not tolerant to yin. Therefore, the planting of persimmon trees should be done on the sunny side of the slope with deep flat land and gentle slopes. If the groundwater level is too high or the soil is thin, the roots are distributed shallowly and it is easy to cause premature aging of tree vigor and the breeding of diseases and insects.
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