Fertilizer requirement characteristics, high-yield fertilization technology and time of persimmon trees

Persimmon trees are native to the Yangtze River Basin in China and are cultivated in various provinces and regions in the east to Taiwan Province. The fruit is often made into fruit after de-astringent. After proper treatment, it can be stored for several months and can be eaten at any time in a year. Persimmons can also be processed into persimmons. So what are the fertilizer requirements, high-yield fertilization techniques and time requirements of persimmon trees?

Fertilization is a very important link for persimmon trees with high quality and stable yield. According to research, the annual output of 1.2 tons of persimmon fruit, about 50 kg of nitrogen, 14 kg of phosphorus, 43 kg of potassium. It can be seen that persimmon needs a lot of nitrogen and potassium. The nutrient absorption of persimmon is also different in each growth stage. from sprouting to flowering, the nutrients needed for persimmon growth mainly come from the storage nutrients in the tree, and the nutrients absorbed from the soil are less, but with the passage of time, the absorption is significantly increased. The period from flowering to fruit expansion is the period of maximum nutrient absorption, especially the more potassium is needed in the later stage, and the absorption of phosphorus is relatively balanced. Nutrient absorption decreased after maturity and before defoliation, but maintaining a certain nutrient supply had a good effect on the accumulation of stored nutrients in the body.

Fertilization Technology of Persimmon

The fertilization of persimmon number is related to site conditions and variety characteristics.

Base fertilizer can be applied in autumn or early spring, but it is better to apply in autumn. For late-maturing varieties, it should be applied before fruit harvest. The base fertilizer is mainly farm manure, with a certain amount of phosphorus and potassium fertilizer, and the application rate accounts for 1, 2, 2 and 3 of the annual fertilizer application. It is difficult to apply organic fertilizer in mountain persimmon orchard. Green manure can be planted, and 0.5 million tons of green manure can be applied every 667 square meters.

Persimmon topdressing can be divided into two times, once in the new shoots stop growing to before flowering, mainly available nitrogen fertilizer, appropriate application of phosphorus and potassium fertilizer, mainly to promote the development of flower organs and improve the fruit setting rate. The second time in the initial stage of fruit expansion, it is better to apply three-yuan compound fertilizer. In the later stage, foliar spraying 1% urea, 0. 2% potassium dihydrogen phosphate or other foliar fertilizer of fruit trees can not only increase the yield and improve the quality, but also benefit the recovery of postharvest tree potential.