Fertilizer nutrients needed loquat, in general, young trees should be more nitrogen, put into operation before the rapid formation of the tree crown; to the results of the age, should pay attention to Adding P and K; when the loquat tree has become senescent, often the result of excessive flowering It is also necessary to pay attention to the addition of nitrogen fertilizer to promote the restoration of the tree.
According to the test of the fruit tree test site (1978) in Nagasaki Prefecture, Japan , the weighted average of the elements in loquat fruit, leaves, branches and roots was 0.71 % for calcium , 0.53 % for potassium , 0.39 % for nitrogen , and 0.1 % for magnesium . Phosphorus 0.06 %, indicating that the whole tree has the most calcium absorption and the least phosphorus. According to the analysis of Singer's in India, loquat fruit contains 0.89 % nitrogen , phosphorus (P2O5) 0.81 %, potassium (K2O) 3.19 %, calcium (CaO) 0.76 %, magnesium (MgO) 0.16 %, chlorine 0.024 %, ash. 9.2 %, indicating that the content of potassium in loquat fruit is the highest, so the result tree should pay attention to increase the application of potassium fertilizer. Our loquat orchard are located in poor soils, on slopes acidic soil organic matter and calcium and magnesium content already low, plus mountain farm manure transport inconvenience, administered less likely to soil fertility recession. Therefore, while adding potassium fertilizer, it is also necessary to increase the application of calcium, magnesium and organic fertilizers. The result tree is too much nitrogen, although the fruit is large, but the color is light, the appearance and quality are poor; if the potassium is too much, the fruit is large, the acid is increased, and the meat is coarse. Therefore, the various elements should be properly coordinated, and the application amount of organic fertilizer should be increased to avoid the application of chemical fertilizer alone, in order to improve the quality of the fruit. According to the test results of the application of compound fertilizer in Zhongxing University of Taiwan, it is considered that the compound fertilizer with a ratio of N : P : K of 4 : 2 : 3 is better in the hillside garden , and the application of calcium, magnesium and organic fertilizer is appropriately increased.
　　 1. The newly planted saplings during the fertilization period generally begin to apply the first fertilizer in the autumn. Young trees should master the principle of “thin fertilizer and diligence†and apply thin water or fertilizer once every two to three months. The method of administration is dug from the trunk 0.5m annular groove.
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